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Smart Systems Integration (SSI)

作者： Widesh Gahar Johan Meyer Paddy French Alper Sisman Erdal Korkmaz Microelectronics - Bioelectronics Delft University of Technology Delft Netherlands Research Group Smart Sensor Systems The Hague University of Applied Science Delft Netherlands

ISBN: (数字)9798350388770

ISBN: (纸本)9798350388787

This study presents an AlN based Lamb wave (A0 mode) liquid sensing device that can be used for biomedical applications. The Lamb wave device features a 1.5 μm composite membrane consisting of a 500 nm LPCVD SiN and a 1 μm of a c-axis oriented AlN film. A 45° rotated design was also considered for this project to reduce the reflections from the edges towards the output IDT. A liquid testing experiment involving IPA, DI water, and D-PBS was performed to see if the devices were able to differentiate between these liquids. The results showed that the fabricated Lamb wave devices exhibited sensitivity to mass loading and were able to distinguish between the liquids based on their phase, frequency, and gain characteristics. Notably, devices with the rotated design have shown a substantial increase in resonance by 15 dB, as well as enhanced sensitivity, when compared to the devices with the normal design. Furthermore, the devices featuring the normal design had a Q factor of 450, whereas devices with the rotated design exhibited a Q factor of 680, indicating superior performance of the latter. These findings suggest that a Lamb wave device with the 45° rotated IDT design holds considerable potential for liquid sensing, particularly in biomedical applications.

关键词： Q-factor Performance evaluation Liquids Sensitivity Resonant frequency Resonance Reflection sensors III-V semiconductor materials Aluminum nitride

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An Improved IMMENS Framework to Handle Conflicting Temporal Plans in mAritime Environments

An Improved IMMENS Framework to Handle Conflicting Temporal ...

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OCEANS

作者： A. Van Keeken M.J.R. Van Den Heuvel H. Hildmann C.P.C. Elenbaas H.J. Veltman Z. Papp C.I. De Hartog J.A.A.J. Janssen Autonomous Systems & Robotics (formerly Intelligent Autonomous Systems) Group Smart Sensor Systems Group The Hague University of Applied Sciences Den Haag The Netherlands Quantum Technology Group at TNO Netherlands Organisation for Applied Scientific Research Den Haag The Netherlands

ISBN: (数字)9798350362077

ISBN: (纸本)9798350362084

The IMMENS framework focuses on enabling the dynamic cooperation of a collection of maritime on-board cyber-physical systems to collectively plan towards an overall (global) goal. In this paper we propose to augment the original IMMENS framework with a new module that implements a formal approach from the literature to facilitate the handling of temporal conflicts in plans. To show that the module is able to handle a sufficiently complex fusion of sub-plans to be incorporated into IMMENS, we applied it to a use-case taking inspiration from the literature. This use-case was used to show that the new module facilitates the merging of sub-plans with temporal dependencies by combining all events in the sub-plans, recalculating the temporal dependencies and finding possible incoherence in the final plan and pointing out where conflicts arise. We present the module and motivate its benefits. With this feature, IMMENS can temporally merge sub-plans. Furthermore, the new module can provide assistance to solve incoherent plans, which was an issue during temporal fusion before.

关键词： Oceans Merging Cyber-physical systems Planning

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Two-Photon Direct Laser Writing Beyond the Diffraction Limit Using the Nanopositioning and Nanomeasuring Machine

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Nanomanufacturing and Metrology 2021年第3期4卷 149-155页

作者： Laura Mohr-Weidenfeller Annika-Verena Hacker Carsten Reinhardt Eberhard Manske Microsystems Technology Group Ilmenau University of TechnologyMax-Planck-Ring 12IlmenauGermany Institute for Process Measurement and Sensor Technology Ilmenau University of TechnologyGustav-Kirchhoff-Str.1IlmenauGermany Bremen University of Applied Science Neustadtswall 30BremenGermany

Since the first realization of two-photon direct laser writing(DLW)in Maruo et al.(Opt Lett 22:132-134,1997),the manufacturing using direct laser writing techniques spread out in many laboratories all over the *** materials with different material properties open a new field for micro-and *** achievable structuring resolution using this technique is reported to be sub-100 nm(Paz et *** *** Appl.24:042004,2012),while a smallest linewidth of 25 nm could be shown in Tan et al.(Appl Phys Lett 90:071106,2007).In our approach,the combination of DLW with the nanopositioning and nanomeasuring machine NMM-1 offers an improvement of the technique from the engineering side regarding the ultra-precise positioning(Weidenfeller et *** Adv Fabr Technol Micro/Nano Opt Photon Ⅺ 10544:105440E,2018).One big benefit besides the high positioning resolution of 0.1 nm is offered by the positioning range of 25 mm×25 mm×5 mm(Jager et *** Technisches Messen 67:319-323,2000;Manske et *** Meas Sci Technol 18:520-527,2007).Thus,a trans-scale fabrication without any stitching or combination of different positioning systems is *** immense synergy between the highly precise positioning and the DLW is demonstrated by the realization of resist lines and trenches whose center-to-center distance undergoes the modified diffraction limit for two-photon *** precise positioning accuracy enables a defined distance between illuminated ***,with a comparable huge width of the trenches of 1.655|im due to a low effective numerical aperture of 0.16,a resist line of 30 nm between two written trenches could be *** the interrelationships for achieving such narrow trenches have not yet been clarified,much smaller resist lines and trench widths are possible with this approach in the near future.

关键词： Direct laser writing Nanopositioning and nanomeasuring machine Two-photon absorption Laser power controlling

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A Fast High Sensitivity Power Transfer Device Approach for (sub)mm-wave applications

A Fast High Sensitivity Power Transfer Device Approach for (...

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ARFTG Conference

作者： B. Louwes M. J. Pelk J. Bueno E. Shokrolahzade C. De Martino M. Spirito Delft University of Technology Delft The Netherlands Research Group Smart Sensor Systems The Hague University of Applied Sciences Delft the Netherlands Vertigo Technologies B.V Delft Netherlands

ISBN: (数字)9798350362732

ISBN: (纸本)9798350362749

In this paper, we present a low-noise, high-gain readout hardware to be used in conjunction with (sub)mm-wave zero bias detectors, to enable high sensitivity (i.e., $\sim \mathbf{- 5 0} \mathbf{d B m}$) and fast (i.e., below a second at -50 dBm) power detection. The developed hardware employs a cascade of two (COTS) programmable gain amplifier (PGA), capable of reaching up to 90 dB gain (volt to volt), each providing an input referred noise level of $16 \mathrm{nV} / \sqrt{\mathrm{Hz}}$. The signal is then digitized on the same board via a 500 kHz 12bit ADC, providing an SNR of 74 dB. The digitized signal is then readout via an ST microcontroller and transferred to the operator PC via a USB interface. The sensitive bias voltages for the PGAs are provided via the microcontroller, or alternatively can be fed by an external lab grade supply to further improve on the (already high) supply noise rejection from the first stage PGA. The proposed hardware is designed to interface with VDI zero bias detectors, high responsivity and low NEP diodes (around 2000 $\mathrm{V} / \mathrm{W}$ and below $12 \mathrm{pW} / \sqrt{\mathrm{Hz}}$, respectively) operating in monomodal waveguide bands up to 500 GHz. In this contribution we demonstrate the usage of the developed hardware with WR10, WR6.5, WR5 and WR 3 ZBD diodes.

关键词： Microwave measurement Sensitivity Microcontrollers Detectors Universal Serial Bus Hardware Gain

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Valorizing waste crab shells as renewable biomass fillers in polyaniline for ammonia gas detection

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Materials Today: Proceedings 2023年 88卷 23-32页

作者： Suhaimi N.F. Abdul Karim S.N. Jamion N.A. Baharin S.N.A. Yong S.K. Shahabuddin S. Raoov M. Sambasevam K.P. Advanced Material for Environmental Remediation (AMER) Research Group Faculty of Applied Sciences Universiti Teknologi MARA Cawangan Negeri Sembilan Kampus Kuala Pilah Negeri Sembilan Kuala Pilah 72000 Malaysia Faculty of Applied Sciences Universiti Teknologi Mara Selangor Shah Alam 40450 Malaysia Department of Science School of Technology Pandit Deendayal Energy University Knowledge Corridor Raisan Village Gujarat Gandhinagar 382007 India Department of Chemistry Faculty of Science Universiti Malaya Kuala Lumpur 50603 Malaysia Electrochemical Material and Sensor (EMas) Group Universiti Teknologi MARA Selangor Shah Alam 40450 Malaysia

Seafood waste possesses an interesting physicochemical characteristic that can be used to produce lucrative end products. In the present study, an attempt was made to valorize waste crab shells as renewable biomass fillers in the synthesis of polyaniline/crab shell (PANI/CS) composites. PANI was synthesized via chemical oxidative method and the waste CSs were added ex-situ into the as-synthesized emulsion of PANI. The physicochemical properties of PANI/CS composites were evaluated by Fourier transform infrared (FTIR), ultraviolet–visible (UV–Vis), X-ray diffraction (XRD) and scanning electron microscope (SEM) techniques. sensor responses of PANI/CS composites in different concentrations of NH3 gases were reported by using a multimeter with the aid of home-made gas chamber. PANI/CS 20% outperformed among all the prepared PANI/CS composites with a correlation coefficient of R2 = 0.9886. Hence, PANI/CS 20% was selected to undergo sensor performance studies such as selectivity, reusability, and long-term stability. PANI/CS 20% exhibited good selectivity towards NH3 gas in the presence of others interfering species such as hexane, acetone, diethyl ether and hydrochloric acid fumes and showed stability up to 1 week with 5 cycles of reusability. In conclusion, the study proved that waste biomass of CSs can be effectively incorporated into the PANI matrix and applied as an NH3 gas sensor with an excellent limit of detection of 9.8 ppm. © 2023

关键词： Biomass Bioresources Environment Gas sensors PANI Waste Management

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Usability Tests on the Temperature-Induced Changes in Magnetic Hysteresis During Steel Production

Usability Tests on the Temperature-Induced Changes in Magnet...

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Impedance Spectroscopy (IWIS), International Workshop on

作者： Marc Simoneit Jonas Brodmann Stephan Schulze Andreas Hennig Jörg Himmel Institute for Measurement Engineering and Sensor Technology University of Applied Sciences Ruhr West Mülheim a. d. Ruhr Germany Senior Expert Research & Development SMS Group GmbH Düsseldorf Germany

This paper presents an inductive measuring system using a two-pancake coil setup for monitoring the electromagnetic properties of steel sheets. An experimental setup was developed to perform measurements on cooling sheet metal samples during real structural transformations. Additional to the experiments with hot steel sheets, a simulation in COMSOL Multiphysics was used to validate the measurement results. The experiments conducted with the cooling material confirmed the suitability of the measurement system for the application described. The results obtained in this work show that by evaluating the phase shift between the exciting magnetic field H and the induction B, the structural transformation can be reliably monitored. In this work, a phase shift of 2 degrees was measured when a steel sheet was cooled by about 200 degrees Celsius.

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Inductive sensor for Magnetic Property Evaluation in Hot Rolling Mill Wire Production

Inductive Sensor for Magnetic Property Evaluation in Hot Rol...

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Impedance Spectroscopy (IWIS), International Workshop on

作者： Jonas Brodmann Marc Simoneit Stephan Schulze Andreas Hennig Jörg Himmel Institute for Measurement Engineering and Sensor Technology Ruhr West University of Applied Sciences Mülheim a. d. Ruhr Germany Senior Expert Research & Development SMS Group GmbH Düsseldorf Germany

This paper presents the results of a preliminary investigation for the development of an inductive sensor system for in-situ measurements in hot rolling mill steel wire production. The developed system should monitor the surface layer of the wire concerning changes in the microstructural composition using magnetic property evaluation. The sensor consists of two surrounding coils and evaluates a measure related to the slope of the commutation curve around the origin of the coordinate system This presented preliminary investigation discussed, whether the evaluation of the AC commutation curve under nonnegligible eddy currents is suitable to distinguish between two different microstructures. In addition, it was investigated, whether the measurement concept remains valid under plant conditions with high temperatures up to 600 °C. Within this work, two samples of 17 mm diameter and 175 mm length with different microstructural compositions could be distinguished under laboratory conditions at room temperature and in high-temperature experiments. The results could be plausibilized using the virgin magnetization curve in COMSOL Multiphysics, which was modified to model the magnetic behavior of the material for higher temperatures.

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Tip-and Laser-based 3D Nanofabrication in Extended Macroscopic Working Areas

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Nanomanufacturing and Metrology 2021年第3期4卷 132-148页

作者： Ingo Ortlepp Thomas Frohlich Roland FuBl Johann Reger Christoph Schaffel Stefan Sinzinger Steffen Strehle ReneTheska Lena Zentner Jens-Peter Zollner Ivo WRangelow Carsten Reinhardt Tino Hausotte Xinrui Cao Oliver Dannberg Florian Fern David Fischer Stephan Gorges Martin Hofmann Johannes Kirchner Andreas Meister Taras Sasiuk Ralf Schienbein Shraddha Supreeti Laura Mohr-Weidenfeller Christoph Weise Christoph Reuter Jaqueline Stauffenberg Eberhard Manske Institute of Process Measurement and Sensor Technology Technische Universitat IlmenauEhrenbergstrasse 2998693 IlmenauGermany Control Engineering Group Technische Universitat IlmenauIlmenauGermany Optical Engineering Group.Technische Universitat Ilmenau IlmenauGermany Microsystems Technology Group.Technische Universitat Ilmenau IlmenauGermany Precision Engineering Group.Technische Universitat Ilmenau IlmenauGermany Compliant Systems Group Technische Universitat IlmenauIlmenauGermany Micro-and Nanoelectronic Systems Group Technische Universitat IlmenauIlmenauGermany Nanoscale Systems Group.Technische Universitat Ilmenau IlmenauGermany Division for Research Service and Technology Transfer Technische Universitat IlmenauIlmenauGermany Electronics Technology Group.Technische Universitat Ilmenau IlmenauGermany IMMS Institut flir Mikroelektronik-und Mechatronik-Systeme Gemeinniitzige GmbH(IMMS GmbH) IlmenauGermany Fachgebiet Technische Physik City University of Applied SciencesBremenGermany Lehrstuhl fiir Fertigungsmesstechnik Friedrich-Alexander-U niversitat(FAU)Erlangen-NiirnbergGermany JUMO GmbH&Co.KG FuldaGermany Asphericon GmbH JenaGermany

The field of optical lithography is subject to intense research and has gained enormous ***,the effort necessary for creating structures at the size of 20 nm and below is considerable using conventional *** effort and the resulting financial requirements can only be tackled by few global companies and thus a paradigm change for the semiconductor industry is conceivable:custom design and solutions for specific applications will dominate future development(Fritze in:Panning EM,Liddle JA(eds)Novel patterning *** society for optics and ***,Bellingham,***://***/10.1117/12.2593229).For this reason,new aspects arise for future lithography,which is why enormous effort has been directed to the development of alternative fabrication ***,the technologies emerging from this process,which are promising for coping with the current resolution and accuracy challenges,are only demonstrated as a proof-of-concept on a lab scale of several square *** scale is not adequate for the requirements of modern lithography;therefore,there is the need for new and alternative cross-scale solutions to further advance the possibilities of unconventional *** challenges arise because of the technical progress in various other fields,realizing new and unique functionalities based on nanoscale effects,e.g.,in nanophotonics,quantum computing,energy harvesting,and life *** platforms for basic research in the field of scale-spanning nanomeasuring and nanofabrication are necessary for these tasks,which are available at the Technische Universitiit Ilmenau in the form of nanopositioning and nanomeasuring(NPM)*** this equipment,the limits of technical structurability are explored for high-performance tip-based and laser-based processes for enabling real 3D nanofabrication with the highest precision in an adequate working range of several thousand cubic millimete

关键词： Nanomeasuring Nanopositioning Nanomanufacturing Scale-spanning Tip-based Laser-based Nanofabrication

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Wear Analysis of Material Measures and Stylus in Repetitive Tactile Calibration

SSRN

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SSRN 2024年

作者： Eifler, Matthias Volk, Raimund Feifel, Stefan Diederichs, Stella Kerscher, Eberhard Seewig, Jörg IU International University of Applied Sciences Juri-Gagarin-Ring 152 Erfurt99084 Germany Institute for Measurement and Sensor-Technology RPTU Kaiserslautern-Landau Gottlieb-Daimler Str. Geb. 44 Kaiserslautern67663 Germany Jenoptik Industrial Metrology Germany GmbH Drachenloch 5 Villingen-Schwenningen78054 Germany Working Group Materials Testing RPTU Kaiserslautern-Landau Gottlieb-Daimler Str. Geb. 49 Kaiserslautern67663 Germany

Tactile industrial measuring instruments are frequently calibrated with material measures defined in ISO 5436-1 to ensure their function and determine their measurement uncertainty. Since this process is repeated regularly, the long-term stability of both material measures and the stylus is essential for a repeatable and reliable measurement. Since tactile sampling involves a mechanical interaction between the stylus and the surface, there is potentially wear when repetitive measurements are performed. We present a comprehensive experimental study on the effects of wear for different stylus instruments – including a reference plane scanning system and multiple skidded scanning systems. Multiple measurement methods are used to determine the state of the stylus and the surface of the material measure, both before and after their mechanical interaction. The impact of the wear on the accuracy of the results can be described, as can the connection between the wear and the hardness of the skidded probe. © 2024, The Authors. All rights reserved.

关键词： Calibration

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Horizon Shielding Factor: A Measure to Assess UV Exposure in Different Microenvironments

SSRN

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SSRN 2022年

作者： Prinz, Jeanette van Dijk, Arjan Siegersma, Douwe van Putten, Edith Verhagen, Gerjo Vonk, Jan Brouwer, Maartje Bolte, John F.B. Smart Sensor Systems Group Faculty of Technology Innovation and Society The Hague University of Applied Sciences Rotterdamseweg 137 Delft2628 AL Netherlands P.O. Box 1 Bilthoven3720 BA Netherlands Wageningen Livestock Research P.O. Box 338 Wageningen6700 AH Netherlands

The worldwide rise of skin cancer incidence rates increases the need to investigate its main cause: exposure to ultraviolet radiation (UVR). Exposure of people to UVR varies, among others, with the location of the individual due to shading. This calls for accurate measurement of individual UVR exposure with a high repeatability and for the assessment which microenvironments successfully reduce UV-exposure. In this analysis, we evaluated the aptness for this goal of wearables at different body positions measuring UVR when worn during daily activities at different locations. First, we analyzed which of the body positions provide the most robust measurements and related measurements taken at other positions to this reference position. Then, we devised a measure to evaluate the effect of horizon shielding: the horizon shielding factor. To explore if high/low horizon shielding factor values coincide with particular geospatial attributes, we inspected those values in their microenvironment on OpenStreetMap. We found homogenous results per *** horizon shielding factor is able to assess which microenvironments successfully reduce UVR-exposure. It can be used in the future to find transportation routes with less UVR exposure. Systematic mapping of the horizon shielding factor in a given region may guide policy makers and developers of new infrastructural projects to avoid areas with high exposure. © 2022, The Authors. All rights reserved.

关键词： Ultraviolet radiation

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