Articles | Volume 4, issue 2
https://doi.org/10.5194/jsss-4-331-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/jsss-4-331-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular research article
| 
17 Dec 2015
Regular research article |
| 17 Dec 2015
Correlation of BAW and SAW properties of langasite at elevated temperatures
M. Schulz
CORRESPONDING AUTHOR
Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Goslar, Germany
E. Mayer
Department of Microsystems Engineering, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
I. Shrena
Department of Microsystems Engineering, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
D. Eisele
Department of Microsystems Engineering, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
M. Schmitt
Department of Microsystems Engineering, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
L. M. Reindl
Department of Microsystems Engineering, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
H. Fritze
Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Goslar, Germany
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Fabian Kohler, Monika Farina, Michal Schulz, Holger Fritze, and Jürgen Wilde
J. Sens. Sens. Syst., 11, 83–97, https://doi.org/10.5194/jsss-11-83-2022, https://doi.org/10.5194/jsss-11-83-2022, 2022
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This work shows a possibility of assembly and connection technology for use under high temperatures up to 1000 °C. A packaging concept was developed, and all the necessary material and joining technologies have been verified to be suitable for use at 1000 °C. A working sensor was built and measured in comparison to the resonator alone. All packaging materials and structures were measured electrically and dielectrically. Equivalent circuits for the packages up to 2 MHz and 1000 °C are available.
Michal Schulz, Rezvan Ghanavati, Fabian Kohler, Jürgen Wilde, and Holger Fritze
J. Sens. Sens. Syst., 10, 271–279, https://doi.org/10.5194/jsss-10-271-2021, https://doi.org/10.5194/jsss-10-271-2021, 2021
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Temperature sensors based on piezoelectric devices enable precise measurement of temperature changes in harsh environments such as high temperatures or aggressive atmospheres. In the case of this device, the change in the temperature is detected by means of the changing resonance frequency of the sensor. Here a sensor device based on catangasite (an isomorph of quartz) is presented. We discuss its behavior at elevated temperatures and confirm that it can successfully operate up to 1030 °C.
Michal Schulz, Timna Orland, Alexander Mehlmann, Avner Rothschild, and Holger Fritze
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Sebastian Schlack, Hendrik Wulfmeier, and Holger Fritze
J. Sens. Sens. Syst., 11, 299–313, https://doi.org/10.5194/jsss-11-299-2022, https://doi.org/10.5194/jsss-11-299-2022, 2022
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High-temperature stable piezoelectric resonators are coated with oxide electrodes. The impact of the oxide electrode conductivity on the mass sensitivity and on the resonance frequency of the device is described by electrical and mechanical models, which are used to analyse the experimental data. Furthermore, the impact of an increasing oxide electrode conductivity is discussed with respect to the application of oxide electrodes and for gas sensing.
Fabian Kohler, Monika Farina, Michal Schulz, Holger Fritze, and Jürgen Wilde
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This work shows a possibility of assembly and connection technology for use under high temperatures up to 1000 °C. A packaging concept was developed, and all the necessary material and joining technologies have been verified to be suitable for use at 1000 °C. A working sensor was built and measured in comparison to the resonator alone. All packaging materials and structures were measured electrically and dielectrically. Equivalent circuits for the packages up to 2 MHz and 1000 °C are available.
Michal Schulz, Rezvan Ghanavati, Fabian Kohler, Jürgen Wilde, and Holger Fritze
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Temperature sensors based on piezoelectric devices enable precise measurement of temperature changes in harsh environments such as high temperatures or aggressive atmospheres. In the case of this device, the change in the temperature is detected by means of the changing resonance frequency of the sensor. Here a sensor device based on catangasite (an isomorph of quartz) is presented. We discuss its behavior at elevated temperatures and confirm that it can successfully operate up to 1030 °C.
Benedikt Bierer, Dario Grgić, Olena Yurchenko, Laura Engel, Hans-Fridtjof Pernau, Martin Jägle, Leonhard Reindl, and Jürgen Wöllenstein
J. Sens. Sens. Syst., 10, 185–191, https://doi.org/10.5194/jsss-10-185-2021, https://doi.org/10.5194/jsss-10-185-2021, 2021
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Detection of flammable gases is necessary to avoid explosive atmospheres. Commercial pellistors require an operation temperature above 450 °C for the detection of methane. We present a novel wireless low-power catalytic gas sensor system based on non-precious metal catalyst for the detection of methane and propane operated at 350 °C. The combination of a MEMS-based sensor with a low-power radio system provides the opportunity to monitor complex infrastructures without using a power grid.
Oleh Buryy, Ihor I. Syvorotka, Yuriy Suhak, Uliana Yakhnevych, Dmytro Sugak, Sergii Ubizskii, and Holger Fritze
J. Sens. Sens. Syst., 10, 121–126, https://doi.org/10.5194/jsss-10-121-2021, https://doi.org/10.5194/jsss-10-121-2021, 2021
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The actuators of precise positioning based on LiNbO3 or LiTaO3 bimorph structures are considered. They consist of two joined plates: one of them lengthens and the other one shortens under the influence of an electric field and, as a result, the actuator bends. Such a device ensures small movements of probes in scanning probe microscopes, micro-electromechanical systems, micro-motors, etc. We determine the optimal orientations of the plates, ensuring the highest possible actuator displacements.
Jens Ebel, Carolin Schilling, and Holger Fritze
J. Sens. Sens. Syst., 9, 263–271, https://doi.org/10.5194/jsss-9-263-2020, https://doi.org/10.5194/jsss-9-263-2020, 2020
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In a very specific way, this research paper shows how established systems – in this case a commercial soot sensor for the automotive sector – can be optimized by diving deep into the basic research. The approach here is to link macroscopic observations or signal behavior with processes taking place on the atomic level. Taking these fundamental processes into account, the sensor's specific response time could be shortened effectively by a change in operating strategy – without any design changes.
Hendrik Wulfmeier, René Feder, Li Zhao, and Holger Fritze
J. Sens. Sens. Syst., 9, 15–26, https://doi.org/10.5194/jsss-9-15-2020, https://doi.org/10.5194/jsss-9-15-2020, 2020
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Epitaxially grown electrodes for high-temperature stable piezoelectric transducers are prepared by pulsed laser depostion. To adjust the stoichiometry in the films, oxygen partial pressure, target composition and deposition temperature are varied. Langasite films with enhanced conductivity are deposited, serving as electrodes for nearly monolithic piezoelectric resonators. These resonators show strong admittance maxima for their 1st, 3rd and 5th harmonics and are not affected by spurious modes.
Michal Schulz, Timna Orland, Alexander Mehlmann, Avner Rothschild, and Holger Fritze
J. Sens. Sens. Syst., 6, 107–119, https://doi.org/10.5194/jsss-6-107-2017, https://doi.org/10.5194/jsss-6-107-2017, 2017
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Impact of electrode conductivity on mass sensitivity of piezoelectric resonators at high temperatures
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Impact of particle size and morphology of cobalt oxide on the thermal response to methane examined by thermal analysis
Improvement of the performance of a capacitive relative pressure sensor: case of large deflections
Morphological characterization and porosity profiles of tantalum glancing-angle-deposited thin films
High-temperature stable piezoelectric transducers using epitaxially grown electrodes
AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body
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Quartz crystal microbalance coated with PEDOT–PSS/PVA nanofiber for a high-performance humidity sensor
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Polymer composite based microbolometers
Leander Claes, Nadine Feldmann, Veronika Schulze, Lars Meihost, Henrik Kuhlmann, Benjamin Jurgelucks, Andrea Walther, and Bernd Henning
J. Sens. Sens. Syst., 12, 163–173, https://doi.org/10.5194/jsss-12-163-2023, https://doi.org/10.5194/jsss-12-163-2023, 2023
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This article describes a method to measure the parameters of piezoelectric materials. This is done by evaluating the complex electrical resistance of a sample. However, the properties of the material can not be calculated directly from the electrical resistance. Instead, a simulation model of the sample is created, and the parameters of the simulation model are adapted using an optimisation algorithm until the model's resistance and the resistance of the physical sample match.
Sebastian Schlack, Hendrik Wulfmeier, and Holger Fritze
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High-temperature stable piezoelectric resonators are coated with oxide electrodes. The impact of the oxide electrode conductivity on the mass sensitivity and on the resonance frequency of the device is described by electrical and mechanical models, which are used to analyse the experimental data. Furthermore, the impact of an increasing oxide electrode conductivity is discussed with respect to the application of oxide electrodes and for gas sensing.
Günter Schultes, Mario Cerino, Angela Lellig, and Marcus Koch
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We develop sensor material to effectively transform mechanical force or torque into an electrical resistance. A new type of thin films containing nickel and carbon has a significantly higher output and is thus very advantageous. But so far, the electrical resistance lacks stability. We therefore investigate how to stabilize the material and show that the partial replacement of nickel by the element chromium solves the problem. The optimized sensor films are now suitable for widespread use.
Olena Yurchenko, Hans-Fridtjof Pernau, Laura Engel, Benedikt Bierer, Martin Jägle, and Jürgen Wöllenstein
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Differential thermal analysis (DTA) was used to examine the effect of the particle size and morphology of Co3O4 on its thermal response under exposure to 1 % CH4. The DTA response results from the catalytic oxidation of methane. Co3O4 samples differing in particle size and morphology were produced by ball milling or were synthesized. The investigations performed with temperatures between 250 and 450 °C reveal that both particle size and shape have a considerable effect on thermal response.
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J. Sens. Sens. Syst., 9, 401–409, https://doi.org/10.5194/jsss-9-401-2020, https://doi.org/10.5194/jsss-9-401-2020, 2020
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J. Sens. Sens. Syst., 8, 329–333, https://doi.org/10.5194/jsss-8-329-2019, https://doi.org/10.5194/jsss-8-329-2019, 2019
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We came across some problems with the current measurement shunts while building a transfer normal power analyzer for 150 kHz within a cooperation project of the manufacturer ZES ZIMMER along with PTB, the National Metrology Institute of Germany and Bundesnetzagentur Berlin. We decided to utilize simulations with the numerical field simulation program Fast Henry to determine the cause of this frequency behavior. We found adequate justification and give recommendations for the shunt manufacturing.
Tobias Ott, Diego Roldán, Claudia Redenbach, Katja Schladitz, Michael Godehardt, and Sören Höhn
J. Sens. Sens. Syst., 8, 305–315, https://doi.org/10.5194/jsss-8-305-2019, https://doi.org/10.5194/jsss-8-305-2019, 2019
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Trisna Julian, Aditya Rianjanu, Shidiq Nur Hidayat, Ahmad Kusumaatmaja, Roto Roto, and Kuwat Triyana
J. Sens. Sens. Syst., 8, 243–250, https://doi.org/10.5194/jsss-8-243-2019, https://doi.org/10.5194/jsss-8-243-2019, 2019
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High-performance relative humidity (RH) sensing system using poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate mixed with polyvinyl alcohol (PEDOT–PSS/PVA) nanofiber coated on top of a quartz crystal microbalance (QCM) chip is developed. Results show that the sensor offers easy fabrication processes and provides excellent sensor characteristics to relative humidity sensing. It offers a very promising alternative method to fabricate high-performance relative humidity sensors.
Sarita Kumari and Sarbani Chakraborty
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Kamalika Tiwari, Bipan Tudu, Rajib Bandyopadhyay, Anutosh Chatterjee, and Panchanan Pramanik
J. Sens. Sens. Syst., 7, 319–329, https://doi.org/10.5194/jsss-7-319-2018, https://doi.org/10.5194/jsss-7-319-2018, 2018
Alexander Dijkshoorn, Patrick Werkman, Marcel Welleweerd, Gerjan Wolterink, Bram Eijking, John Delamare, Remco Sanders, and Gijs J. M. Krijnen
J. Sens. Sens. Syst., 7, 169–181, https://doi.org/10.5194/jsss-7-169-2018, https://doi.org/10.5194/jsss-7-169-2018, 2018
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Current additive manufacturing allows for the implementation of electrically integrated 3-D printed sensors. In this contribution various technologies, sensing principles and applications are discussed. We will give both an overview of some of the sensors presented in literature as well as some of our own work on recent 3-D printed sensors.
Günter Schultes, Hanna Schmid-Engel, Silvan Schwebke, and Ulf Werner
J. Sens. Sens. Syst., 7, 1–11, https://doi.org/10.5194/jsss-7-1-2018, https://doi.org/10.5194/jsss-7-1-2018, 2018
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This research is about future sensor devices for force, pressure, and weight. The core of such sensors for mechanical quantities is a thin film that reacts to deformation. We are developing new sensor films with higher output. Different compositions of metal containing carbon films are examined. Most preferable and stable films contain nickel and carbon. The microscopic film morphology is uncovered. Electron tunneling between nanoparticles is responsible for the very sensitive reaction.
Sabrina Amrehn, Xia Wu, and Thorsten Wagner
J. Sens. Sens. Syst., 5, 179–185, https://doi.org/10.5194/jsss-5-179-2016, https://doi.org/10.5194/jsss-5-179-2016, 2016
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Indium oxide inverse opal is a promising new material for optical gas sensors. The photonic properties caused by the inverse opal structure can be utilized to read out the sensors’ electronical state by optical methods. The maintenance of good thermal stability of transducer material during operation is a minimum requirement. We present results on the synthesis and investigation of the structural stability of the In2O3 inverse opal structure up to a temperature of 550 °C (limit of substrate).
Kyle M. Sinding, Alison Orr, Luke Breon, and Bernhard R. Tittmann
J. Sens. Sens. Syst., 5, 113–123, https://doi.org/10.5194/jsss-5-113-2016, https://doi.org/10.5194/jsss-5-113-2016, 2016
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This paper investigates the effect of high-temperature and low-temperature (< 150 °C) processing conditions on the surface composition of the substrate. Furthermore, the resultant transducers from high- and low-temperature fabrication processes are compared to determine if a low-temperature processing method is feasible. For these studies a sol-gel spray-on process is employed to deposit piezoelectric ceramics onto a stainless-steel 316L substrate.
A. A. Haidry, N. Kind, and B. Saruhan
J. Sens. Sens. Syst., 4, 271–280, https://doi.org/10.5194/jsss-4-271-2015, https://doi.org/10.5194/jsss-4-271-2015, 2015
M. Dietrich, D. Rauch, U. Simon, A. Porch, and R. Moos
J. Sens. Sens. Syst., 4, 263–269, https://doi.org/10.5194/jsss-4-263-2015, https://doi.org/10.5194/jsss-4-263-2015, 2015
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The effect of stored ammonia on the complex dielectric permittivity of H-ZSM-5 zeolites with varying storage site density was observed between 200 and 300 °C under reaction conditions by microwave cavity perturbation. Polarization and dielectric losses were differently affected. The sensitivity of the polarization to stored ammonia is almost independent, the sensitivity of the dielectric losses strongly dependent on the storage site density. The results can be explained by proton hopping.
V. G. Harutyunyan, K. M. Gambaryan, V. M. Aroutiounian, and I. G. Harutyunyan
J. Sens. Sens. Syst., 4, 249–253, https://doi.org/10.5194/jsss-4-249-2015, https://doi.org/10.5194/jsss-4-249-2015, 2015
K. Kulshreshtha, B. Jurgelucks, F. Bause, J. Rautenberg, and C. Unverzagt
J. Sens. Sens. Syst., 4, 217–227, https://doi.org/10.5194/jsss-4-217-2015, https://doi.org/10.5194/jsss-4-217-2015, 2015
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In this paper we show that for radially symmetric piezoceramic disks non-zero sensitivity of the electrical impedance to the whole material parameter set can be computed using a system of 3-ring electrodes and non-uniform electrical excitation. We formulate an optimisation problem for increasing this sensitivity. However, the system displays multiple optimal configurations for the radii of said ring electrodes and we have shown some results from optimising such configurations using simulations.
F. Roth, C. Schmerbauch, E. Ionescu, N. Nicoloso, O. Guillon, and R. Riedel
J. Sens. Sens. Syst., 4, 133–136, https://doi.org/10.5194/jsss-4-133-2015, https://doi.org/10.5194/jsss-4-133-2015, 2015
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We report on the high-temperature piezoresistivity of carbon-containing silicon oxycarbide nanocomposites (C/SiOC). The piezoresistive behavior of the C/SiOC nanocomposites relies on the presence of dispersed nanocrystalline graphite and non-crystalline carbon domains. In comparison to highly ordered carbon, C/SiOC exhibits strongly enhanced sensitivities, even at high temperatures. Thus, k values of ca. 80 at the highest temperature reading, 1200°C, reveal that C/SiOC is a primary candidate.
P. Gembaczka, M. Görtz, Y. Celik, A. Jupe, M. Stühlmeyer, A. Goehlich, H. Vogt, W. Mokwa, and M. Kraft
J. Sens. Sens. Syst., 3, 335–347, https://doi.org/10.5194/jsss-3-335-2014, https://doi.org/10.5194/jsss-3-335-2014, 2014
F. Di Maggio, M. Ling, A. Tsang, J. Covington, J. Saffell, and C. Blackman
J. Sens. Sens. Syst., 3, 325–330, https://doi.org/10.5194/jsss-3-325-2014, https://doi.org/10.5194/jsss-3-325-2014, 2014
E. Dilonardo, M. Penza, M. Alvisi, C. Di Franco, D. Suriano, R. Rossi, F. Palmisano, L. Torsi, and N. Cioffi
J. Sens. Sens. Syst., 3, 245–252, https://doi.org/10.5194/jsss-3-245-2014, https://doi.org/10.5194/jsss-3-245-2014, 2014
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Electrochemically synthesized colloidal Au NPs with controlled dimension and composition were successfully deposited electrophoretically on CNT networked films. Au NP/CNT films were tested as active layers in resistive NO2 sensors, exhibiting a p-type response and a sensitivity depending on Au loading. The impact of the Au loading on gas sensing performance was investigated as a function of the working temperature, gas concentration and interfering gases.
A. Hosoya, S. Tamura, and N. Imanaka
J. Sens. Sens. Syst., 3, 141–144, https://doi.org/10.5194/jsss-3-141-2014, https://doi.org/10.5194/jsss-3-141-2014, 2014
A. Nocke
J. Sens. Sens. Syst., 2, 127–135, https://doi.org/10.5194/jsss-2-127-2013, https://doi.org/10.5194/jsss-2-127-2013, 2013
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