Leibniz Universität Hannover Faculty Faculty of Mechanical Engineering
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Institute of Micro Production Technology
 
Institute of Micro Production Technology Research Past Projects

Industry 4.0

  • SFB 653 – L3 – Reading and Writing of Magnetically-Saved Data
    Within the framework of the Sonderforschungsbereich (SFB) 653 “Gentelligente Components in a Life Cycle” in the subproject, L3, a method for magnetic storage of data directly on the surface of magnetic components in an industrial production environment is researched at the IMPT. With this concept, the data is stored magnetically with an inductive, magnetic write head. For the readout of data, a method that is based on the magneto-optic Kerr effect is used.
    Year: 2011
    Funding: German Research Foundation
    Duration: 2005 - 2017
  • SFB 653 – S1 – Modular, Multifunctional Microsensors
    The subproject S1, deals with the development of modular, multifunctional microsensors at the IMPT that serve to gather the use, maintenance, and recycling-relevant data throughout the entire life cycle of a component.
    Year: 2011
    Funding: German Research Foundation
    Duration: 2005 - 2017
  • SFB 653-T05: Process and Tool System for the Application and Integration of Substrate-Free Modular Micro Sensors
    The main goal of the transfer project is the transfer of substrate-free sensor technology in a production-oriented environment that was previously developed in the subproject, S1. With this aim, the previous results of basic research in an industry-standard application and its suitability will be evaluated.
    Year: 2014
    Funding: German Research Foundation
    Duration: 2013-2016

Mikrotribologie

  • SFB 1368 C03 – Investigation of tribological systems for tool coatings in an inert atmosphere
    In the Collaborative Research Center 1368 "Oxygen-free production", processes and mechanisms in manufacturing technology processes are investigated that are carried out in an oxygen-free atmosphere. In subproject C03, the IMPT is investigating the influence of the atmosphere on tribological systems for the subsequent development of tool coatings in an inert atmosphere. Important aspects include the identification and quantification of fundamental relationships of wear processes in silane-doped atmospheres, diffusion and adhesion effects and the investigation of possible novel alloy formations at the interfaces.
    Year: 2020
    Funding: DFG
    Duration: 2020 - 2027
    © IMPT

Medizintechnik

  • TR37 – B5 – Magnetic Polymer-Nanoparticle
    From the University of Rostock Clinic and Health Care Center for Cardiac Surgery and the Institute for Micro Production Technology (IMPT) at Leibniz Universität Hannover, new methods were developed for which new applications and research possibilities in medical engineering were made possible by selective manipulation of magnetic nanoparticles.
    Year: 2011
    Funding: German Research Foundation
    Duration: 2007 - 2011

[uncategorized]

  • gebo – T5 – High Temperature Sensors: Pressure Sensor (IMR) and Magnetic Field Sensor (IMPT)
    Within the framework of the research association, gebo, the Institute of Micro Production Technology (IMPT) is developing a high temperature-capable magnet field sensor for detecting the geomagnetic field in all three spatial directions.
    Year: 2011
    Funding: Ministerium für Wissenschaft und Kultur (MWK) + Baker Hughes INTEQ GmbH
    Duration: 2009 – 2014
  • Integration of Ultrathin Magnetic Field Sensors in Intelligent Automation Components (UltraMag) – Subproject: Development of Ultrathin, Magnetic Field Sensors for Three-Dimensional Measuring
    For this grant project at the IMPT, an ultrathin magnetic field sensor for detecting the state of an electric motor was developed with the goal of optimizing the operation with more sophisticated control algorithms.
    Year: 2011
    Funding: Federal Ministry for Education and Research
    Duration: 2009 – 2013
  • Inner Ear Micro Transducer for the Stimulation of the Perilymph for the Hard of Hearing
    The goal of the project is to develop an implantable hearing aid (inner ear micro transducer) for restoring hearing by mechanical stimulation of the perilymph in the cochlea. The work is done in collaboration with the Hannover Medical School.
    Year: 2011
    Funding: German Research Foundation
    Duration: 2008-2012
  • SPP 1337 – Active Microoptics – Subproject: Electromagnetic Triggering of Microoptics: Adaptive Systems Based on Ferrofluid Actuators
    For this project, the IMPT developed and produced components of thin film technology for a ferrofluid microactuator, which causes the movement of a liquid column and, therefore, causes the displacement of an optical liquid in a micro canal. This leads to the formation of a liquid lens at the end of the canal with a curvature radius and focal length that can be adjusted.
    Year: 2011
    Funding: German Research Foundation
    Duration: 2008-2011
  • Research and Development of a High-Resolution Inductive Measurement System (Micro Inductosyn®)
    This grant project comprises the research, development and production of thin film technology of a miniaturized, high-resolution, inductive displacement measuring system based on the Inductosyn® principle)
    Year: 2011
    Funding: German Research Foundation
    Duration: 2008-2010
  • Performance Advances in Recording through Micro Actuation
    A prerequisite for optimal recording density of hard disk storage is a minimal altitude and a perfect tracking of the read/write head.
    Year: 2011
    Funding: European Union
    Duration: 2005 - 2009
  • Offene Hochschule Niedersachsen (OHN)
    Within the framework of the “Offene Hochschule Niedersachsen” (OHN), Leibniz Universität Hannover pursues the main goal of making the way easier for the industrially skilled who do not possess a classical university entrance qualification.
    Year: 2011
    Funding: Niedersächsischen Ministerium für Wissenschaft und Kultur
    Duration: 2009 - 2012
  • SFB 516 – A1 – Design of Active Micro Systems
    The aim of the subproject, A1, at IMPT to design and produce, using thin film technology, a microstepping motor which is suitable for fine positioning at the nanometer level.
    Year: 2011
    Funding: German Research Foundation
    Duration: bis 2010
  • Sharpening of Cutting Wheels for Mechanical High-Precision Micro-Machining with Laser Radiation
    The mechanical trueing of cutting blades for high-precision machining of brittle materials is carried out with sharpening blocks. During the sharpening, however, approximately two thirds of the blade wear occurs. This project is aimed considerably reducing the blade wear by introducing a laser truing process with the same degree of sharpness.
    Year: 2011
    Funding: German Research Foundation
    Duration: 2010 - 2012
  • SFB 516 – B1 – Production of Magnetic Layers for Electromagnetic Microactuators
    For the construction of electromagnetic microactuators, soft magnetic and hard magnetic materials are used. In this project, suitable production processes as well as structuring processes of the magnetic layers for the integration in active microsystems were developed.
    Year: 2011
    Funding: German Research Foundation
    Duration: bis 2010
  • Magnetoelastic Sensors for the Monitoring of Mechanical Deformations at the Boundary of the Fiber-Matrix in Composite Materials
    A spatial resolution stress and strain sensor system can be created by the use of magnetostrictive materials on carbon fiber surfaces and micro-fine structuring of layers, and it can be used for the electronic monitoring of the load state of safety or service-related fiber composite
    Year: 2011
    Funding: German Research Foundation
    Duration: 2008 - 2011
  • Hearing for all
    Year: 2012
  • STUDIUM INITIALE - Transition Management and Integration of Professionally Qualified in Higher Education
    Skilled worker shortages and demographic change pose new challenges to the education system. For businesses, it is becoming increasingly difficult to find well-trained workers and to hold on to them.
    Year: 2014
    Duration: Oktober 2011 – März 2015
  • Planar Optronic Systems (PlanOS) - A05
    The aim of the project is to produce totally polymer-based, large-area sensor networks that can completely do without electronic components.
    Year: 2014
    Funding: German Research Foundation
    Duration: 2013-1017
  • BRANDI
    Within the framework of the subproject of the project Brandi, the foundations for a packaging technology of a micro-electron source are investigated, which is to be used as an ionization source in non-radioactive, highly sensitive sensor systems for early fire detection.
    Year: 2014
    Funding: Federal Ministry of Education and Research
    Duration: 2013-2016
  • Micro-Miller
    As a part of this project, both mechanical production processes and a combination of lithography and etching processes will be developed and fundamentally researched for the economic batch production of silicon carbide micro cutters.
    Year: 2014
    Funding: German Research Foundation
    Duration: 2014 - 2017
  • FOSTA Research Project (P 1065) – Tool-Integrated Temperature Measurement for Press Hardening
    The aim of the research project, “Tool-Integrated Temperature Measurement for Press Hardening,” is temperature measuring in a press hardening tool without affecting the tool properties. The temperature measurement can be in contrast with traditionally used tactile measuring sensors due to the newly developed sensor surface and because the contacting of the sensor can be carried out much more accurately.
    Year: 2014
    Duration: 01.09.2014 - 31.08.2016
  • Collaborative project "Light-based analytics for the quantitative determination of chlorine dioxide" (LAClO2)
    The goal of this cooperation project is the realization of an innovative sensor that can determine the concentration of chlorine dioxide using direct photometric analysis.
    Year: 2015
    Duration: 2015 - 2017
  • Tactile display for virtual reality applications
    The research project "Tactile Display for virtual reality applications" includes the conception of a novel tactile display for the simulation of sensory impressions that appeal to haptic perception of stimuli.
    Year: 2016
    Funding: Deutsche Forschungsgemeinschaft
    Duration: 2013 - 2017
  • WInSiC4AP
    The project “Wide Band Gap Innovative SiC for Advanced Power” (WInSiC4AP) is an international collaborative project funded by the EU ECSEL initiative. More than 20 partners from France, Italy and Germany are jointly developing semiconductor elements and circuits based on silicon carbide (SiC). This semiconductor material is known for its large band gap, which allows transistors to operate at higher voltages and frequencies and also has better efficiency compared to silicon or germanium. Based on such transistors, high-voltage converters for e.g. electromobility, are jointly developed and tested. As a partner in this project, the IMPT is conducting research together with Würth Elektronik on integrated transformers that are integrated within the printed circuit board. These components therefore save space, which then can be used for other electronic components and also allow a height reduction. Conventional inductors and, above all, transformers are often decisive in terms of the space required on a circuit board due to their classic production with wound copper wire. The developed transformers are supposed to be used in gate driver circuits of SiC MOSFETs.
    Year: 2017
    Funding: ECSEL (EU)
    Duration: 2017 - 2021
  • Light-based analytics for the determination of the concentration of chlorine dioxide (LaClO2)
    As part of the project "Light-based analytics for the determination of the concentration of chlorine dioxide" (LaClO2), a novel sensor for monitoring the chlorine dioxide content of industrial, process and drinking water is being developed and tested.
    Year: 2017
    Funding: EFRE (EU)
    Duration: 2017 - 2019
  • Tool-integrated temperature measurement for press hardening
    As part of the research project, a tactile thermoresistive temperature sensor based on thin-film technology was developed for use in hot forming. By selecting a suitable base material and designing a sensor contact outside the mechanically stressed area, a negative influence on the component properties could be eliminated. To achieve an economical service life, the sensor surface was provided with a wear protection layer. In addition to the realization of a full control within the scope of quality assurance, the sensors can also contribute to a more economical design of the production process.
    Year: 2017
    Funding: AiF
    Duration: 2014 - 2017
  • Flexible mono- and multi-layer micro-grinding tools for ultra-precision and micro machining of ductile materials
    Thin-film grinding tools have great potential for the production of high surface qualities and for the production of microstructures. The aim of this project is the fundamental investigation and modelling of the relationships between the manufacturing process and the application behavior of the innovative micro grinding tools.
    Year: 2017
    Funding: Deutsche Forschungsgemeinschaft (DFG)
    Duration: 2017 - 2019
  • Fundamental investigation of the mechanisms of ultrasonic wedge-wedge bonding using varying topographies
    Ultrasonic wire bonding has been used in microelectronics for more than half a century. However, the underlying mechanisms are not fully understood, which prevents further improvement of this technique. This project’s aim is to find unknown mechanisms and investigate their influence on the bonding process.
    Year: 2017
    Funding: Deutsche Forschungsgemeinschaft (DFG)
    Duration: 2017 - 2019
  • Compact atom chip technology for the use in zero-gravity (KACTUS)
    The goal of the KACTUS project is to further miniaturize and further develop scientific instruments for the generation of Bose-Einstein condensates, a macroscopic quantum object in which the majority of the particles are in the same quantum mechanical state. The particles all have the same wave function and thus form the basis for atom interferometry, in which the wave properties of atoms are analyzed, for example to determine the gravitational constant.
    Year: 2017
    Funding: Deutsches Zentrum für Luft- und Raumfahrt (DLR)
    Duration: 2016 - 2019
  • SFB 653 T14 - Development and manufacturing of direct-deposited sensors on bottom hole assemblies
    Within the Collaborative Research Center 653 "Intelligent Components in the Life Cycle" this transfer project has been developed in cooperation with an industrial partner. The aim of the project is the thin-film production of sensitive strain gauges that can detect the mechanical stresses of drilling bottom hole assemblies and withstand the harsh conditions underground. A novel, patent-pending coating system is used for this purpose, which allows sensors to be deposited directly onto component surfaces of any size. In addition to the development of temperature-compensated strain gages, the project also addresses the aspect of deposition on curved surfaces.
    Year: 2018
    Funding: DFG
    Duration: 2018 - 2021
  • Batch manufactured flexible micro-grinding tools for finishing metallic surfaces
    Grinding tools manufactured by thin-film technology show great potential for the production of high surface finishes and for the manufacture of microstructures. The aim of this project is to investigate and model the relationships between the manufacturing process and the application behavior of the novel, compliant micro-grinding tools. In this context, the technological and economic potential of the lithographically produced tools is also to be identified, especially with regard to batch production. In order to ensure workpiece machining and to demonstrate the tool potential, basic tools with defined parameters will be manufactured according to the requirement profiles of ultra-precision and micro-machining. The characterization of the application behavior of the micro-grinding tools represents a further objective of this project. The main focus is on analyzing the relationships between the abrasive and support layers as well as the application behavior and the manufacturing result. Based on the results of the investigation, an empirical wear model will be developed. Furthermore, the project aims at the development of an electrochemical cell for the oxidation of copper surfaces. This process is intended to control the mechanical properties of the surface in a targeted manner in order to counteract the ductile behavior of the copper during ultraprecision machining and micromachining. This can enable better structuring and higher surface finishes. The cell will also be integrated into a 5-axis CNC milling machine to seamlessly integrate the electrochemical machining of the workpiece into metal-cutting process flows. The oxide behavior of the copper workpieces will also be modeled based on the results. Furthermore, a validation of the models and the tool production will be carried out during the project. Adapted workpieces will then be manufactured and tested on the basis of defined application scenarios.
    Year: 2019
    Funding: Deutsche Forschungsgemeinschaft (DFG)
    Duration: 2019 - 2022
  • QCHIP
    The Institute of Microproduction Technology (IMPT) develops so-called atom chips as components of magneto-optical traps for compact matter wave interferometers. In combination with sophisticated laser cooling, these atom chips generate magnetic field configurations to trap and cool atoms by exploiting the Zeeman effect. This represents the first step in creating a bose-einstein condensate that serves as a test mass for interferometry. In order to use such high-precision matter-wave interferometers in the field or on board satellites, miniaturization will be pursued. The number of lasers and electronics required for cooling can be reduced by patterning the surfaces of atomic chips with optical gratings. By cleverly exploiting diffraction effects, operation can thus be achieved with just one laser.
    Year: 2019
    Funding: BMWi
    Duration: 2019 - 2026
  • PhoenixD
    The Cluster of Excellence PhoenixD deals with the topic of realising optical precision devices quickly and cost-effectively using additive manufacturing. This vision unites researchers from the faculties of mechanical engineering, physics, electrical engineering, computer science and chemistry at Leibniz Universität Hannover and TU-Braunschweig. The researchers are working together on the simulation, production and application of optical systems. The systems currently based on glass are complex, usually manufactured by hand and sometimes require large installation spaces. The cooperation of the different departments is now to develop a digital manufacturing system with which individualised optical products can be realised.
    Year: 2019
    Funding: DFG
    Duration: 2019 - 2025
  • KACTUS II
    Within the first joint project KACTUS, a new generation of atom chips could be developed at IMPT in collaboration with the Institute of Quantum Optics (IQ) and the Humboldt University Berlin (HUB), which are characterized by more suitable materials and better joining processes, so that this new atom chip generation is characterized by faster switching behavior and better vacuum properties. Based on this novel platform, further functions are to be added to the atom chips within the framework of KACTUS II, which, in addition to further miniaturization, will also result in a drastic reduction in the complexity of the overall structure. Here, the focus is on the investigation of new chip materials, the introduction of several current-carrying layers per chip and the improvement of the optical quality of the mirror layer for interferometric applications.
    Year: 2019
    Funding: BMWK
    Duration: 2019 - 2024
  • Quantum Frontiers
    The Cluster of Excellence QuantumFrontiers combines the research strengths of Leibniz Universität Hannover, TU Braunschweig and the Physikalisch-Technische Bundesanstalt in Braunschweig with the aim of developing new measurement concepts and sensor topologies based on photonic systems, dedicated semiconductor systems, nanostructures, quantum-manipulated atomic and molecular ensembles, and even macroscopic objects. The IMPT focuses mainly on atomic interferometry and is involved with two research groups.
    Year: 2019
    Funding: DFG
    Duration: 2019 - 2025
  • Force-sensitive guidance systems based on direct-deposited component-specific sensor technologies
    In the machine tools of modern production technology, forces represent an important source of information for process controlling and condition monitoring. Measuring of the occurring process forces allows the detection of tool breakages and process errors. Additionally, the tool displacement and the tool wear can be estimated. With the example of a portal milling machine, new types of direct-deposited strain gauges are used in this project due to the high demands on the necessary sensors. They are produced directly on the guide carriages, which are used to move the milling head in all three spatial directions on linear profile rails. The result are particularly thin and sensitive sensors that can record the forces and torques with high precision. Methods for simulating the optimum sensor positions and sensor data fusion exploit the full potential of the technology.
    Year: 2021
    Funding: DFG
    Duration: 2021 - 2024
    © Bosch-Rexroth
  • Gallium Nitride for Advanced Power (GaN4AP)
    The GaN for Advanced Power (GaN4AP) project is an international collaborative project funded by the EU's ECSEL initiative. Worldwide, the number of hybrid and electric cars is growing steadily. This is accompanied by a greater need for high-performance electronics in charging technology. In order to meet the increasing demand, high power transformers based on Galium Nitride will be realized in this project with partners from Italy, Czech Republic, France and Germany. IMPT is participating in the project by manufacturing transformers and inductors in planar technology on Printed Circuit Boards (PCBs) and Molded Interconnect Devices (MID). These are essential for driving and filtering the electrical signal. The planar structure meets the demands for miniaturization of electrical systems and simultaneous increase in performance.
    Year: 2021
    Funding: ECSEL (EU)
    Duration: 2021 - 2025
  • Quantum Valley Lower Saxony
    The overall goal of the QVLS is to build a 50 qubit quantum computer. The IMPT is part of this excellent research network with access to unique infrastructure of the whole consortium. The team has excellent national and international networks and participates (besides QVLS-Q1) in important collaborations, including the Cluster of Excellence "QuantumFrontiers". The IMPT is part of several teams. In QVLS T2.4, building on our expertise in atom chip fabrication, we are addressing the design and construction of an atom chip with the possibility of depositing a glass package on the surface of the atom chip and encapsulating it. In this course, we are evaluating joining techniques with respect to hermeticity. Furthermore, in a novel implementation of these atom chips with a grating-based magneto-optical trap, we aim to integrate an optical grating into the atom chip surface. In QVLS T3.1, we are developing processes and methods to connect an ion trap chip together with the associated quantum control components (CMOS electronic chip, active photonic chip, passive optical interposer). This includes all connections to the outside world (cables, fibers). This ion trap packaging solution will be based on 3D hybrid integration techniques to enable stacking and bonding of dies from ceramic, glass and silicon substrates at wafer level. In QVLS T3.3, as part of the miniaturization of the vacuum system and the peripherals necessary for the operation of the quantum sensor, we are addressing the evaluation of joining glass to titanium and joining components under UHV conditions (themo-compressive and anodic). Furthermore, we are involved in the development of a pumping technique, which will initially be based on non-evaporable getter materials (NEG). Furthermore, we are developing and characterizing a platform for chip-based atomic sources for use in quantum sensors.
    Year: 2021
    Funding: VolkswagenStiftung & Niedersächsisches Ministerium für Wissenschaft und Kultur
    Duration: 2021 - 2025
  • Ultrasonic silver sintering
    Today's demands on power electronics have risen significantly, especially due to e-mobility, making the connection properties of proven methods such as soldering or adhesive bonding no longer adequate for future requirements. Silver compound sintering is gaining in importance due to its superior electrical and thermal properties. However, the long process times and high temperatures and pressures prevent the extensive use of this joining method. This is where the DFG-funded project sets in and researches the optimisation of these process parameters by using ultrasound. With the help of suitable alloy partners, low-melting sintering pastes are also being produced, with which the process of Ultrasonic Transient Liquid Phase Sintering (ULTPS) will be established.
    Year: 2021
    Funding: DFG
    Duration: 2021 - 2023
  • QGyro+ (Development of a compact experimental platform of a gyro-stabilized quantum navigation sensor)
    In the research project QGyro+, high-precision quantum inertial sensors will be developed and tested to support conventional inertial navigation sensors. Highly accurate and non-manipulable navigation systems, which can also be used when conventional GPS is not available, are particularly important for aviation, space and shipping as well as autonomous driving. The central goal of the project is to develop a six-axis quantum inertial navigation sensor. With this device, drift-free and highly accurate quantum inertial sensors are to be tested for the first time for use in autonomous navigation in order to open the way to new fields of application. In the course of the project, this sensor will be set up and used as a compact experimental platform (QINS experimental platform). The IMPT will play a key role in this by driving forward the miniaturization of various system components. To increase the degree of integration, so-called atom chips, as a component of the magneto-optical trap, with extended mirror reference surfaces are used, which are developed and manufactured at the IMPT. In addition, the IMPT is researching a wide range of technologies, in particular to miniaturize the required ultra-high vacuum system and the associated vacuum periphery. A promising approach to maintain the ultra-high vacuum (UHV) is the active pumping of the system as well as the corresponding pressure measurement by means of micro-engineered, magnetic field-free ion getter pumps based on field emitter arrays. The field emitter arrays developed at IMPT consist of hundreds of thousands of nanoscale field emitters, each with concentric extraction electrodes. These electrode sources provide free electrons for efficient residual gas ionization, so that the ionized residual gas atoms can subsequently be bonded to a functionalized ion collector. In combination with newly developed vacuum chamber concepts, the vision of a UHV microchamber with integrated pump and measurement technology and atom chip technology is to be realized in the long term.
    Led by: Alexander Kassner, M.Sc.
    Year: 2021
    Funding: DLR
    Duration: 01.01.2021 - 01.03.2026
  • ENDEMAR (Energy Saving by Use of Multiple Autarkic Control Sensor Systems)
    Intelligent Energy Flow – Reduction of Energy Consumption through Maintenance Free Sensors in Buildings and Accommodations The project is funded by the German Federal Ministry for Economic Affairs and Energy. The aim is to intelligently control and reduce the energy consumption within factory buildings and warehouses. The function will be demonstrated with LED light sources, but remains open for other energy users such as air-conditioning systems or heatings. The control is based on intelligent, maintenance free autarkic sensors with passive and active control functions and ultra-low energy consumption. Within the project three industrial companies and three research facilities are collaborating. The IMPT is supporting by developing a suitable energy-optimized energy-harvester for powering of autarkic, maintenance free control panels.
    Led by: Folke Dencker
    Year: 2021
    Funding: German Federal Ministry for Economic Affairs and Energy
    Duration: 2021-2025
  • Magnetic Measurement Advances (MagMA)
    In the research project Magnetic Measurement Advances (MagMA), the IMPT is developing possible measurement methods and equipment for its industrial partner GlobalFoundries to determine the quality and properties of deposited magnetic layers without the wafers having to leave the production line. Due to the limitations of established measurement methods, the examination of the layers is necessarily performed on separated pieces of the wafer. However, this means that further processing of the wafer is no longer possible, since it can only be processed as a whole. This not only causes considerable additional costs in the development of new layer stacks, but also in the quality assurance of existing systems and processes.
    Led by: Eike Fischer
    Year: 2021
    Funding: GlobalFoundries
    Duration: 2021 - 2022
  • ISiG – Integrated Sensors for intelligent Large-Diameter Bearings
    In the context of digitization, the acquisition of measurement data plays a central role in the use of large components. For rolling bearings, the application of conventional sensors is hardly possible in situ due to the dimensions, so that the "ISiG" project addresses the use of various customized thin-film sensors. They will be produced directly on the machine element through coating processes that produces integrated, component inherent sensors on the measurement object. In cooperation with the Institute of Machine Design and Tribology (IMKT), the first step is to simulate the mechanical loads that occur and to derive the design of the sensor nodes. The high surface pressure, slipping and wear place the highest requirements on the sensor technology, which is why the development of redundant sensor systems by means of intelligent sensor data fusion represents a primary goal.
    Year: 2021
    Funding: DFG
    Duration: 2021-2025
  • MicroMill
    Micro-milling is increasingly finding applications due to advancing developments in micro-tool manufacturing. Structuring a workpiece with geometries on a micrometer scale is possible thanks to tools with ever smaller diameters. However, these are costly to manufacture. Each milling tool must be made from solid material and undergo time-intensive grinding. This is then reflected in the price of the tools. The micro milling tools to be produced in this project are to be manufactured from silicon carbide in a batch production process, so that several hundred milling heads can be produced per time. A dry etching process will be used to pattern the milling heads, and its process parameters must be evaluated for the most anisotropic etching possible at high etch rates. Since the milling tool is produced in two parts and consists of a milling head and tool shank, an ideal joining method is sought with which both parts can be reliably joined. For this purpose, different adhesives and chemical as well as mechanical surface treatments are tested on the surfaces to be joined. The resulting adhesive strength of the two tool parts will be investigated. Furthermore, a very precise assembly technique must be developed so that the milling head can be centered on the tool shank. Otherwise, among other things, inaccuracies in the shape of the workpieces may occur. The manufacturing process will then be industrialized with the project partner Reißfelder Profilschleifen GmbH and the application limits of the milling tools will be tested on various materials with industrial benefits, such as copper or steel. The end result should be small micro milling tools made of silicon carbide, which can be used for machining in various areas, such as medical technology, and can be produced on an industrial scale.
    Year: 2021
    Funding: Förderprogramm ZIM (Zentrales Innovationsprogramm Mittelstand) des Bundesministeriums für Wirtschaft und Energie (BMWi)
    Duration: 2021-2023
  • Magdat II
    In the context of Industry 4.0 and the associated digitalization of production, the interest in suitable data storage on components is more in demand than ever in order to be able to automatically record and process products. The research project focuses on the further development of magnetic thermal spray coatings (e.g. WCCo) as a medium for data storage. These layers offer a particularly resistant alternative to conventional data storage solutions such as RFID chips, especially in the harsh environmental conditions of components. The main objective of the project is to optimize the magnetic properties of the layers by varying relevant process parameters. In addition, the influence of magnetic fields on the microstructure of the spray coatings is being determined, for which purpose the process chamber is being expanded with a specially designed electromagnet. The optimized coating systems are then analysed for their achievable data stability and density. For this purpose, a customized magnetic head is designed and constructed to ensure efficient writing and reading of the data on the layers. A further project objective is the development of a layer system that is suitable for perpendicular data recording and requires the application of a soft magnetic layer under the actual data memory.
    Year: 2021
    Funding: DFG
    Duration: 2021 - 2024
  • HARD - Hannover Alliance for Research on Diamond
    The IMPT, in collaboration with Prof. Dr. Uwe Morgner (Institute of Quantum Optics, IQO), Prof. Dr. Michael Kues (Institute of Photonics, IOP), Prof. Dr.-Ing. Marc Wurz (DLR Institute of Quantum Technology, University of Ulm), the Institute of Solid State Physics at the PTB Braunschweig and the AG Paasche (VIANNA, Medical School Hanover), has obtained a grant of 2.6 million euros for the expansion of regional infrastructure for research on the material diamond. In the infrastructure project "Hannover Alliance of Research on Diamond (HARD)", equipment for the production, structuring, and integration of diamond coatings will be procured and put into operation. With these measures, which are financed by the European Regional Development Fund (ERDF) within the REACT-EU initiative, the infrastructure for diamond research will be significantly expanded. Future research topics in the fields of production technology, optics, quantum optics and gravitational physics, as well as biomedical technology will be supported.
    Led by: Prof. Dr. Uwe Morgner
    Year: 2022
    Funding: REACT-EU EFRE
    Duration: 01.01.2022 - 31.03.2023
  • TiefZieh II
    The IMPT develops various application-specific sensor solutions. For example, the "Central Innovation Program for SMEs (ZIM)" is funding the follow-up project "Deep-drawing sensor technology: development of a robust inductive microsensor". In collaboration with the two companies GDH Metallverarbeitungs GmbH and KIMA Process Control GmbH, research is being carried out into the further development of inductive deep-drawing sensors with a transformer principle for monitoring the quality of drawn parts. Initially, a new sensor concept based on an FEM analysis was developed to monitor the quality of the deep-drawn parts and reduce sensor wear during the process. The complexity of the geometry of the deep-drawn parts requires the simultaneous use of several sensors. Their sensor signal results from the position of the deep-drawn sheet edge above the planar sensor. The sensors are currently temperature-resistant up to 100 °C and make it possible to detect different metals and damage (cracking or wrinkling) in order to intervene to reduce the reject rate and increase process quality.
    Year: 2022
    Funding: AiF Projekt GmbH - ZIM
    Duration: 2022 - 2024
  • InnoVaQ
    The development of quantum sensors suitable for everyday use requires a high degree of miniaturization and integration of the vacuum system. In the InnoVaQ (Innovative Vacuum Technology for Quantum Sensors) research project, technologies are being developed that together allow a highly compact ultra-high vacuum setup to be realized for a strontium atom-based quantum sensor. In the long term, the increasing miniaturization in the field of quantum sensor technology not only leads to a reduction in the size of the housing, but also necessitates a vacuum periphery of the corresponding size. Thus, a miniaturized pumping technique is needed to develop compact and transportable quantum sensing technology. In this context, the IMPT is developing a combined device in cooperation with LPKF®, which is similar to an ion getter pump in terms of its functional principle. The core component is a magnet-free field emitter which does not influence the measurements of the quantum system. Two approaches are being pursued for the technical implementation of the emitter, firstly a silicon-based approach (IMPT) and secondly a glass-based approach manufactured using LIDE technology (LPKF®). The pumping technology to be realized by IMPT is based on micro-engineered field emitters in the form of tips fabricated by a cut-off grinding process. This technology has been patented by Leibniz Universität Hannover and enables the production of highly integrable emitter tips that act as electron sources for ionization in miniaturized ion getter pumps. Importantly, in the developed vacuum system, the pressure in the ultra-high vacuum (UVH) region is 10-8 to 10-11 mbar. To reach this pressure, a combination of backing pumps and high vacuum pumps is needed, since single-stage pumping from atmospheric pressure to UHV is not possible. After reaching the target pressure, the miniaturized vacuum pump developed in this project should be able to maintain and measure the pressure.
    Year: 2022
    Funding: Bundesministerium für Bildung und Forschung
    Duration: 01.01.2022-30.06.2025
  • Polygrind
    The goal of the "PolyGrind" project is to develop a self-sharpening grinding wheel with cross-linking matrices made of polyimide or epoxy resin with integrated cooling channels. Layers with grain contents of ~17.5 m% are applied, in which the grain is released during blunting. The high cross-linking quality is achieved by microstructuring with UV light in the 365 nm range. The fluid channels with diameters of around 100 µm are first simulated and then generated in a mold. The goal is precise application of the coolant. The production process and UV structuring are first developed on 100 mm diameter polyimide disks and then designed for a casting process for 200 and 400 mm grinding disks with layer thicknesses of 200 and 250 µm. Due to the solid cross-linking in the hard matrix, a G-ratio > 1 is achieved in the process. Riblet structures with an aspect ratio of 0.4 can be achieved at feed rates of ~400 mm/min and flat surfaces with Ra = 0.1 at feed rates of ~600 mm/min.
    Year: 2022
    Funding: ZIM -Zentrales Innovationsprogramm Mittelstand
    Duration: 2022 - 2024
  • ProKI
    ProKI is a demonstration and transfer network for the use of artificial intelligence (AI) in production. It is funded by the Federal Ministry of Education and Research. The goal is to support small and medium-sized companies in particular with the introduction of AI in production. In addition to various training courses and workshops on the subject of AI, demonstrators are also being developed. The IMPT provides support with the "Mobile Data Acquisition" demonstrator. This is a mobile measurement setup that enables the evaluation of, for example, retrofitted strain and acceleration sensors or the evaluation of existing, internal control data from SME-specific systems. Based on the data, the challenges and potentials for the use of AI in the respective company are developed.
    Year: 2022
    Funding: BMBF
    Duration: 2022 - 2024
  • AeroQGrav
    In flight gravimetry, gravitational acceleration is identified as the difference between a gravitational acceleration measurement by a gravimeter on the one hand and the inertial acceleration of the flight path relative to inertial space on the other, which is determined via satellite navigation or alternative methods, for example. Thanks to flight gravimetry, the Earth's gravitational field can be measured efficiently and over a large area, which has always provided key information for the geosciences, but also for the search for raw material deposits. In geology and geotectonics, gravimetry is used to identify subsurface density anomalies, in geodesy to define reference surfaces for national height reference systems, in oceanography to determine ocean currents or to record changes in mass distribution on Earth, triggered in no small part by changes in our climate. As part of this sub-project of the AeroQGrav project, the technology of quantum gravimetry is to be adapted to the needs of flight gravimetry. A new type of quantum flight gravimeter - the AeroQGrav - is to be developed as part of the project and tested in several test campaigns in flight (and possibly also on water if available). The aim is to demonstrate a higher resolution and long-term stability in the measurement of gravitational acceleration. The IMPT is involved in the development and production of the atom chip system for AeroQGrav. This system will be made available at an early stage. In parallel, the atom chip technology will be evaluated by the IMPT through extensive qualification measures and long-term tests, both in the laboratory and in practical applications, in order to prepare the atom chip system for commercialization. Process plans and production are being adapted in order to complete the transition from prototype production to robust standard components.
    Year: 2024
    Funding: VDI / BMBF
    Duration: 01.12.2022-30.11.2027
  • SELFLED
    The investigation of single cells in synthetic microenvironments can provide enormous information about cell properties, cell interactions and interactions with active substances. The large amount of time, personnel and material required generally restricts such investigations to the scale of microtiter plates, i.e. plates with typically 96 and up to 1536 micron wells. Fluorescence microscopy is used here as an essential analysis tool. The cells are stained with fluorophores that fluoresce when irradiated with certain wavelengths. However, the constant irradiation of the cells leads to photobleaching and photooxidative stress and thus to falsified test results due to degrading fluorescence and reduced viability of the cells. The aim of the SELFLED research project is to develop a novel illumination unit for fluorescence microscopy that enables controlled, selective and monitorable irradiation of any microenvironment, thus making photobleaching and photooxidative stress controllable and reducing them without restricting the performance of experiments. To this end, microLEDs and micro-optics embossed in glass are to be combined in a highly integrated package adapted to the specific conditions of the micro-cells. A laser-assisted embossing process is being investigated for the micro-optics, which enables the automated production of application-specific microlens arrays at wafer level, for example.
    Year: 2024
    Funding: BMBF
    Duration: 2024 - 2026
  • CRC TRR 375 – A04: Integrated component monitoring of highly loaded hybrid porous components
    The overarching scientific objective of the CRC TRR 375 is to establish a new class of materials: multifunctional high-performance components made of hybrid porous (HyPo) materials. These HyPo-components will enhance the energy efficiency and performance of a wide range of products, ensure product safety through component-integrated sensor technology and facilitate data acquisition in the context of digitalization. The challenges lie in the gradient of material properties, the stability of high-temperature sensors and the complex interdepence of residual stress state, relaxation and fatigue behavior. In this context, the IMPT is working in sub-project A04 on component-integrated polymer-free thin-film sensors that are used for data acquisition during the manufacturing and use phase.
    Year: 2024
    Funding: DFG
    Duration: 2024 - 2027
  • CARIOQA-PMP
    CARIOQA-PMP (Cold Atom Rubidium Interferometer in Orbit for Quantum Accelerometry - Pathfinder Mission Preparation) aims to develop a new technology to be deployed in space within the next decade: Quantum Accelerometers. This technology will be used for satellite-based geoscience to monitor climate change and thus support the development of mitigation and adaptation measures. The technology developed within the CARIOQA-PMP will be tested during a space mission: the Quantum Pathfinder Mission. In addition to developing a technical model for the space mission instrument and developing, improving and testing critical technologies, CARIOQA-PMP will also produce a technical and programmatic roadmap for quantum space gravity missions. This roadmap will be shared and validated by the European stakeholders. It will ensure that the results of the project have maximum impact through its harmonization with the European programmatic framework. CARIOQA-PMP brings together leading stakeholders from five EU countries. These include experts in satellite instrument development (Airbus Defence and Space, Exail, TELETEL, LEONARDO), quantum sensing (LUH, SYRTE, LP2N, LCAR, ONERA, IESL/FORTH), space geodesy, geosciences and gravity field data users (LUH, TUM, POLIMI, DTU) as well as experts in impact maximization and impact assessment (PRAXI Network/FORTH, G.A.C. Group). The preparation of the pathfinder mission is being coordinated by the French and German space agencies CNES and DLR under the leadership of CNES.
    Year: 2024
    Funding: EU, Horizon Europe (HORIZON)
    Duration: 12.2022-03.2026
  • CARIOQA-GE
    The goal of this project is an investigation to define a pathfinder mission for satellite-based, inertial-sensitive atomic interferometry (CARIOQA-GE - Cold Atom Rubidium Interferometer in Orbit for Quantum Accelerometry). The aim is to determine the most advantageous scenarios and requirements for a Pathfinder mission, taking into account financial and technical constraints. The study draws on the unique expertise of LUH scientists in the development of miniaturized quantum systems for applications in microgravity, which is based on successful micro-gravity campaigns, from experiments in the drop tower to sounding rockets and the ISS. Using a simulation program specially developed for satellite-based atom interferometry, the scenario for a Pathfinder mission and evaluation of its results will be further developed with regard to scientific added value for the Earth observation community. In addition, a new atom chip design is to be developed that is suitable for a quantum space gravimetry mission. The main task of the IMPT is the development and detailed evaluation of the manufactured atom chip systems, the identification of potential weak points and the subsequent revision in cooperation with the Institute of Quantum Optics at LUH. Since the atom chip systems themselves are operated under UHV conditions, microscopic and certain metrological analysis methods pose a challenge. For this reason, the IMPT will develop a test chip equipped with sensors to monitor internal and external influences during operation. This test SC chip will replace the SC chip for evaluation tests. On the basis of the findings obtained, both limit values for operation can be determined and necessary revisions can be derived. An initial atom chip system, which will be developed and manufactured at the start of the project, will serve as the basis for these tests.
    Year: 2024
    Funding: DLR / BMBF
    Duration: 01.10.2022-30.09.2025
  • Q-GALA
    What current activities in the field of quantum technology have in common is that they are usually laboratory-based setups. In addition to the spatial and financial aspects, these systems require corresponding expertise on the user side for operation. They are therefore primarily suitable for basic research and scientific-technical service tasks, such as those carried out at metrology institutes. The Q-GALA project will develop a miniaturized, glass-based quantum system platform based on the example of the atomic interferometer. This platform represents the first step towards a miniaturized quantum system (MQS), which is highly relevant for any application in the field of quantum technology. At the same time, it also paves the way for economical series production, making quantum technology accessible to a wide range of users. The use of glass as a transparent substrate opens up completely new design possibilities, such as the rear approach of the beams. In addition, glass is an electrical insulator in the targeted temperature ranges, which suppresses eddy currents and also avoids the use of additional, potentially faulty insulation layers. In addition to the functional properties already offered by the silicon-based system, the photonics part is added here by actively utilizing the optical properties of glass.
    Year: 2024
    Funding: Zukunftscluster / Projektträger Jülich
    Duration: 01.03.2023-28.02.2026

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