Articles | Volume 3, issue 2
https://doi.org/10.5194/jsss-3-223-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/jsss-3-223-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular research article
| 
25 Sep 2014
Regular research article |
| 25 Sep 2014
Aerosol-deposited BaFe0.7Ta0.3O3-δ for nitrogen monoxide and temperature-independent oxygen sensing
M. Bektas
Department of Functional Materials, University of Bayreuth, 95447 Bayreuth, Germany
D. Hanft
Department of Functional Materials, University of Bayreuth, 95447 Bayreuth, Germany
D. Schönauer-Kamin
Department of Functional Materials, University of Bayreuth, 95447 Bayreuth, Germany
T. Stöcker
Department of Functional Materials, University of Bayreuth, 95447 Bayreuth, Germany
G. Hagen
Department of Functional Materials, University of Bayreuth, 95447 Bayreuth, Germany
R. Moos
Department of Functional Materials, University of Bayreuth, 95447 Bayreuth, Germany
Related authors
No articles found.
Thomas Wöhrl, Julia Herrmann, Jaroslaw Kita, Ralf Moos, and Gunter Hagen
J. Sens. Sens. Syst., 12, 205–214, https://doi.org/10.5194/jsss-12-205-2023, https://doi.org/10.5194/jsss-12-205-2023, 2023
Short summary
Short summary
Sensors for detecting various gases, such as nitrogen oxides, play a major role in times of climate change in protecting the environment from the possible toxic influences of such gases. Due to their usually complex design, gas sensors may react to changes in the operating temperature, which can occur due to different ambient influences. This article shows two methods for accurately measuring the temperature on the surface of a sensor under realistic conditions.
Robin Werner, Jaroslaw Kita, Michael Gollner, Florian Linseis, and Ralf Moos
J. Sens. Sens. Syst., 12, 69–84, https://doi.org/10.5194/jsss-12-69-2023, https://doi.org/10.5194/jsss-12-69-2023, 2023
Short summary
Short summary
A high-temperature gauge to simultaneously determine electrical conductivity, the Hall constant, and the Seebeck coefficient was developed. Screen-printed heating structures on a ceramic sample holder generate temperatures up to 800 °C. Heating structures were designed using FEM simulations. The temperature distribution was validated by thermal imaging. Measurements on constantan (reference material) and boron-doped silicon wafer confirm the functionality of the gauge up to 800 °C.
Johanna Distler, Thomas Wöhrl, Robin Werner, Michael Gerlach, Michael Gollner, Florian Linseis, Jaroslaw Kita, and Ralf Moos
J. Sens. Sens. Syst., 12, 9–19, https://doi.org/10.5194/jsss-12-9-2023, https://doi.org/10.5194/jsss-12-9-2023, 2023
Short summary
Short summary
Differential scanning calorimetry (DSC) is a widely used tool to analyze thermal material properties. This study focuses on the advancement of a miniaturized DSC chip as an alternative to conventional devices. The first development steps for the integration of a weighing system are shown, starting with model considerations and simulation-based optimization to initial measurements. Three different measurement methods are investigated and show promising results.
Robin Werner, Jaroslaw Kita, Michael Gollner, Florian Linseis, and Ralf Moos
J. Sens. Sens. Syst., 10, 71–81, https://doi.org/10.5194/jsss-10-71-2021, https://doi.org/10.5194/jsss-10-71-2021, 2021
Short summary
Short summary
A novel, low-cost measurement device for simultaneous high temperature measurements of the electrical conductivity and Hall coefficient has been developed. Simulations were used to design a suitable screen-printed planar platinum heating structure that generates temperatures of up to 600 °C. Simulations of the temperature distribution have been validated using thermal imaging. Measurements were compared with data from the literature to validate the functionality of the novel device.
Anastasiya Ruchets, Nils Donker, Jens Zosel, Daniela Schönauer-Kamin, Ralf Moos, Ulrich Guth, and Michael Mertig
J. Sens. Sens. Syst., 9, 355–362, https://doi.org/10.5194/jsss-9-355-2020, https://doi.org/10.5194/jsss-9-355-2020, 2020
Short summary
Short summary
A commercial solid electrolyte gas sensor of the type "Pt|YSZ|Pt, air" based on yttria-stabilized zirconia for colorimetric oxygen detection was operated in optimized dynamic electrochemical modes. Cyclic voltammetry and square-wave voltammetry were used for the detection of NO and O2 in N2 in the temperature range between 550 and 750 °C. Due to the differences of electrode kinetics of the single components it is possible to detect these redox active gases selectively and quasi-simultaneously.
Julia Herrmann, Gunter Hagen, Jaroslaw Kita, Frank Noack, Dirk Bleicker, and Ralf Moos
J. Sens. Sens. Syst., 9, 327–335, https://doi.org/10.5194/jsss-9-327-2020, https://doi.org/10.5194/jsss-9-327-2020, 2020
Short summary
Short summary
In this contribution, an inexpensive and robust impedimetric NOx sensor is presented. The impedance of a functional thick film depends selectively on the NOx concentration in the exhaust but shows a dependency on the oxygen concentration. Therefore, an additional temperature-independent resistive oxygen sensor structure was integrated on the same sensor platform. It serves not only to determine the oxygen concentration in the exhaust, but also to correct the oxygen dependency of the NOx sensor.
Nils Donker, Anastasiya Ruchets, Daniela Schönauer-Kamin, Jens Zosel, Ulrich Guth, and Ralf Moos
J. Sens. Sens. Syst., 9, 293–300, https://doi.org/10.5194/jsss-9-293-2020, https://doi.org/10.5194/jsss-9-293-2020, 2020
Short summary
Short summary
Symmetrical Pt | YSZ | Pt–NO gas sensors were produced with frit-containing and fritless Pt electrodes and fired between 950 and 1300 °C. The sensors were operated by pulsed polarization. With fritless pastes, the sensors responded significantly higher. The firing temperature affects the sensitivity only slightly. The low NO sensitivity of the frit-containing electrodes was attributed to a blocking effect at the triple-phase boundaries that inhibits the oxygen transport through the sensor.
Stefanie Walter, Andreas Bogner, Gunter Hagen, and Ralf Moos
J. Sens. Sens. Syst., 8, 49–56, https://doi.org/10.5194/jsss-8-49-2019, https://doi.org/10.5194/jsss-8-49-2019, 2019
Short summary
Short summary
A planar resonant radio-frequency gas sensor was equipped with an integrated heater. By simulative geometry optimization it now can be operated up to 700 °C. Sensitive materials with gas-dependent dielectric properties at higher temperatures can now be used. By coating the sensor with zeolite, ammonia could be detected. Depending on the working temperature, the sensor returns either a dosimeter signal (low temperatures) or a gas-concentration-dependent radio-frequency signal (high temperatures).
Murat Bektas, Thomas Stöcker, Angelika Mergner, Gunter Hagen, and Ralf Moos
J. Sens. Sens. Syst., 7, 289–297, https://doi.org/10.5194/jsss-7-289-2018, https://doi.org/10.5194/jsss-7-289-2018, 2018
Short summary
Short summary
We prepared BaFe(1-x)-0.01Al0.01TaxO3-δ (BFATx) thick films with x between 0.1 and 0.4 at room temperature using the aerosol deposition method and we measured Seebeck coefficients and conductivities between 600 and 800 °C at different oxygen concentrations. Deposited on a transducer that includes a heater, equipotential layers, and electrode structures, a dual thermoelectric–resistive oxygen sensor with almost temperature-independent characteristics of both measurands was realized using BFAT30.
Gunter Hagen, Antonia Harsch, and Ralf Moos
J. Sens. Sens. Syst., 7, 79–84, https://doi.org/10.5194/jsss-7-79-2018, https://doi.org/10.5194/jsss-7-79-2018, 2018
Short summary
Short summary
Monitoring hydrocarbon concentrations in automotive exhausts is affected by flow rate changes. The signal of thermoelectric gas sensors is a thermovoltage. Its origin is a temperature difference that depends on the flow rate. To avoid this noise effect, the sensor can be installed in a defined bypass position. As shown by simulation and experiments, the gas flow around the sensor is almost turbulence-free and the signal only depends on the hydrocarbon concentration and not on the flow rate.
Thomas Ritter, Sven Wiegärtner, Gunter Hagen, and Ralf Moos
J. Sens. Sens. Syst., 6, 395–405, https://doi.org/10.5194/jsss-6-395-2017, https://doi.org/10.5194/jsss-6-395-2017, 2017
Short summary
Short summary
A planar thermoelectric gas sensor is modeled. By coupling all influences (fluid flow, gas diffusion, heat transfer, chemical reactions, and electrical properties) a model was set up that mirrors the sensor behavior precisely, as the comparison with experimental data shows. The coupling of 3-D and 1-D geometry enables to calculate the temperature distribution, fluid flow, and the gas concentration distribution in the 3-D model, while the chemical reactions are very accurately calculated in 1-D.
Franz Schubert, Michael Gollner, Jaroslaw Kita, Florian Linseis, and Ralf Moos
J. Sens. Sens. Syst., 5, 381–388, https://doi.org/10.5194/jsss-5-381-2016, https://doi.org/10.5194/jsss-5-381-2016, 2016
Short summary
Short summary
An FEM model is used to improve the sensor design of a Tian–Calvet calorimeter. By modifying the basic part of the sensor (a sensor disc based on low temperature co-fired ceramics), the sensitivity was increased by a factor of 3. The model was validated and the sensors were calibrated. Indium and tin samples were measured. The melting temperatures show a deviation of 0.2 K while the enthalpy was measured with a precision better than 1 %. The values for tin deviate by less than 2 % from literature.
Franz Schubert, Michael Gollner, Jaroslaw Kita, Florian Linseis, and Ralf Moos
J. Sens. Sens. Syst., 5, 205–212, https://doi.org/10.5194/jsss-5-205-2016, https://doi.org/10.5194/jsss-5-205-2016, 2016
Short summary
Short summary
Initial steps to apply a new ceramic multi-layer sensor for a Tian–Calvet calorimeter are shown. The FEM-developed sensor consists of stacked ceramic discs and insulation rings. The functionality of the sensor disc was proven up to 600 °C and the entire stack was tested at room temperature. The resolution was 5 µW and the sensitivity was 8.5 µV mW−1. The new sensor shows similar specifications as commercial devices and presents a good starting point for future high temperature applications.
F. Schubert, S. Wollenhaupt, J. Kita, G. Hagen, and R. Moos
J. Sens. Sens. Syst., 5, 25–32, https://doi.org/10.5194/jsss-5-25-2016, https://doi.org/10.5194/jsss-5-25-2016, 2016
Short summary
Short summary
A manufacturing process for a planar binary lambda sensor is shown. By joining the heating and the sensing components via glass soldering with a joining temperature of 850 °C, a laboratory platform has been established that allows the manufacturing of two independent parts in HTCC technology with electrodes that are post-processed at lower temperatures, as is required for mixed-potential sensors. The concept has been proved by comparing the device with a commercial sensor.
S. Fischer, D. Schönauer-Kamin, R. Pohle, M. Fleischer, and R. Moos
J. Sens. Sens. Syst., 4, 321–329, https://doi.org/10.5194/jsss-4-321-2015, https://doi.org/10.5194/jsss-4-321-2015, 2015
Short summary
Short summary
Thimble-type lambda probes that are known for their robustness in harsh exhausts can also be used as an NOx sensor by applying the pulsed polarization technique. This study evaluates in detail the influence of temperature on the NO sensitivity, so that an optimum operating point can be derived. Stepwise NO concentration changes between 0 and 12.5 ppm in synthetic exhausts demonstrate the high potential of this concept.
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
Short summary
Short summary
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.
P. Fremerey, A. Jess, and R. Moos
J. Sens. Sens. Syst., 4, 143–149, https://doi.org/10.5194/jsss-4-143-2015, https://doi.org/10.5194/jsss-4-143-2015, 2015
Short summary
Short summary
A concept to measure in situ sulfidation of silica pellet catalysts loaded with nickel is evaluated. During sulfidation between 100 and 400°C nickel sulfides form. The electrical impedance of the pellets was recorded in situ. At first, the particles are highly insulating but during sulfidation their conductivity increases by decades. Since nickel sulfides are less conductive than nickel, the strong conductivity increase may be due to conducting percolation paths that form during sulfidation.
I. Marr, A. Groß, and R. Moos
J. Sens. Sens. Syst., 3, 29–46, https://doi.org/10.5194/jsss-3-29-2014, https://doi.org/10.5194/jsss-3-29-2014, 2014
P. Bartscherer and R. Moos
J. Sens. Sens. Syst., 2, 95–102, https://doi.org/10.5194/jsss-2-95-2013, https://doi.org/10.5194/jsss-2-95-2013, 2013
Related subject area
Applications: Environmental monitoring
An in-hive soft sensor based on phase space features for Varroa infestation level estimation and treatment need detection
A classification technique of civil objects by artificial neural networks using estimation of entropy on synthetic aperture radar images
Measure particulate matter by yourself: data-quality monitoring in a citizen science project
An autonomous flame ionization detector for emission monitoring
Gas sensors for climate research
Metal ion binding and tolerance of bacteria cells in view of sensor applications
Highly sensitive benzene detection with metal oxide semiconductor gas sensors – an inter-laboratory comparison
Homogenous static magnetic field coils dedicated to portable nuclear magnetic resonance for agronomic studies
In situ measurements of O2 and CO eq. in cement kilns
Scanning method for indoor localization using the RSSI approach
High-temperature CO / HC gas sensors to optimize firewood combustion in low-power fireplaces
Atmospheric transmission coefficient modelling in the infrared for thermovision measurements
Partially integrated cantilever-based airborne nanoparticle detector for continuous carbon aerosol mass concentration monitoring
Luminescent determination of nitrite traces in water solutions using cellulose as sorbent
Catalytic metal-gate field effect transistors based on SiC for indoor air quality control
Characterization of ash particles with a microheater and gas-sensitive SiC field-effect transistors
Catalytic and thermal characterisations of nanosized PdPt / Al2O3 for hydrogen detection
Selective detection of hazardous VOCs for indoor air quality applications using a virtual gas sensor array
A novel horizontal to vertical spectral ratio approach in a wired structural health monitoring system
Sensing of gaseous malodors characteristic of landfills and waste treatment plants
Andreas König
J. Sens. Sens. Syst., 11, 29–40, https://doi.org/10.5194/jsss-11-29-2022, https://doi.org/10.5194/jsss-11-29-2022, 2022
Short summary
Short summary
Bees play a major role in our ecosystem and the human food supply chain. Numerous threats, from pesticides to parasites, endanger bees and possibly cause bee colony collapse. The Varroa mite is one major parasite, and its timely detection and treatment is a key task for beekeepers. Contemporary sensors, electronics, and AI/PR allow vital parameters of bee hives to be monitored. Recent gas sensors (e.g., SGP30 or BME680) allow continuous in-hive parameter and Varroa population monitoring.
Anton V. Kvasnov and Vyacheslav P. Shkodyrev
J. Sens. Sens. Syst., 10, 127–134, https://doi.org/10.5194/jsss-10-127-2021, https://doi.org/10.5194/jsss-10-127-2021, 2021
Short summary
Short summary
We have prepared an article that demonstrates one of the ways to recognize objects on the ground surface. This paper is a result of experimental data that were collected with unnamed aerial vehicles (UAVs) with synthetic aperture radar. Although UAV radar has a small monitoring area, we noted that such pictures can contain the steady features of the mutual arrangement between detected objects. We have constructed an artificial neural network that solves the tasks of group object recognition.
Aboubakr Benabbas, Martin Geißelbrecht, Gabriel Martin Nikol, Lukas Mahr, Daniel Nähr, Simon Steuer, Gabriele Wiesemann, Thomas Müller, Daniela Nicklas, and Thomas Wieland
J. Sens. Sens. Syst., 8, 317–328, https://doi.org/10.5194/jsss-8-317-2019, https://doi.org/10.5194/jsss-8-317-2019, 2019
Jan Förster, Winfred Kuipers, Christian Lenz, Steffen Ziesche, and Franz Bechtold
J. Sens. Sens. Syst., 8, 67–73, https://doi.org/10.5194/jsss-8-67-2019, https://doi.org/10.5194/jsss-8-67-2019, 2019
Short summary
Short summary
Reliable detection of hydrocarbons can be achieved with a flame ionization detector (FID). However, these devices have not been implemented as true field devices yet. Miniaturization by using ceramic multilayer technology leads to a strong reduction of gas consumption and allows autonomous operation of the FID with gas supply by electrolysis. Thus, this research enables the use of the FID in the field. Characterization of this new FID reveals a performance comparable to conventional FIDs.
Louisa Scholz, Alvaro Ortiz Perez, Benedikt Bierer, Jürgen Wöllenstein, and Stefan Palzer
J. Sens. Sens. Syst., 7, 535–541, https://doi.org/10.5194/jsss-7-535-2018, https://doi.org/10.5194/jsss-7-535-2018, 2018
Short summary
Short summary
The availability of datasets providing information on the spatial and temporal evolution of greenhouse gas concentrations is of high relevance for the development of reliable climate simulations. Here we present a novel, non-dispersive infrared absorption spectroscopy (NDIR) device that can possibly act as a central building block of a sensor node to provide high-quality data of carbon dioxide (CO2) concentrations under field conditions at a high measurement rate.
Jonas Jung, Anja Blüher, Mathias Lakatos, and Gianaurelio Cuniberti
J. Sens. Sens. Syst., 7, 433–441, https://doi.org/10.5194/jsss-7-433-2018, https://doi.org/10.5194/jsss-7-433-2018, 2018
Short summary
Short summary
We assessed the applicability of bacterial surface layer proteins of Lysinibacillus sphaericus JG-B53 and Sporosarcina ureae ATCC 13881 for the detection of metal ions in water. Based on the interactions of the cell components with metal complexes, two potential sensor systems, one colorimetric with functionalized gold nanoparticles and the other using a regenerative sensor layer, were developed. The systems' detection limits of YCl3 in water were 1.67 x 10−5 and 1 x 10−4 mol L−1, respectively.
Tilman Sauerwald, Tobias Baur, Martin Leidinger, Wolfhard Reimringer, Laurent Spinelle, Michel Gerboles, Gertjan Kok, and Andreas Schütze
J. Sens. Sens. Syst., 7, 235–243, https://doi.org/10.5194/jsss-7-235-2018, https://doi.org/10.5194/jsss-7-235-2018, 2018
Short summary
Short summary
For detection of benzene, a multichannel gas sensor system was tested in two different laboratories at the concentration range from 0.5 ppb up to 10 ppb. A model is used to extract the channels and multilinear regression is done to compensate cross interference to other gases. Depending on the measurement conditions, the quantification accuracy is between ±0.2 ppb and ±2 ppb. Regression models for one laboratory were transferable between the labs under comparable measurement conditions.
Rahima Sidi-Boulenouar, Ariston Reis, Eric Nativel, Simon Buy, Pauline de Pellegars, Pan Liu, Michel Zanca, Christophe Goze-Bac, Jérome Barbat, Eric Alibert, Jean-Luc Verdeil, Frédéric Gatineau, Nadia Bertin, Atma Anand, and Christophe Coillot
J. Sens. Sens. Syst., 7, 227–234, https://doi.org/10.5194/jsss-7-227-2018, https://doi.org/10.5194/jsss-7-227-2018, 2018
Olga Driesner, Fred Gumprecht, and Ulrich Guth
J. Sens. Sens. Syst., 6, 327–330, https://doi.org/10.5194/jsss-6-327-2017, https://doi.org/10.5194/jsss-6-327-2017, 2017
Ahmad Warda, Bojana Petković, and Hannes Toepfer
J. Sens. Sens. Syst., 6, 247–251, https://doi.org/10.5194/jsss-6-247-2017, https://doi.org/10.5194/jsss-6-247-2017, 2017
Short summary
Short summary
We studied the problem of wireless indoor mobile robot localization and tracking using noise-free data and data with additive white Gaussian noise at three receiver positions. We proposed a new scanning method to overcome the drawbacks of fingerprint, which includes time-consuming construction of a database and its need for rebuilding every time a significant change in the environment occurs.
Binayak Ojha, Navas Illyaskutty, Jens Knoblauch, Muthu Raman Balachandran, and Heinz Kohler
J. Sens. Sens. Syst., 6, 237–246, https://doi.org/10.5194/jsss-6-237-2017, https://doi.org/10.5194/jsss-6-237-2017, 2017
Short summary
Short summary
A novel combustion airstream control concept has been developed based on in situ sensors for combustion temperature, residual oxygen concentration and residual un-combusted CO / HC components. The implementation of this control concept allows for a large reduction in toxic gas emissions by up to 80 % compared to hand-operated furnaces. A stable long-term CO / HC sensor for such an application is not available; thus, the long-term sensor signal stability of different CO / HC sensors is studied.
W. Minkina and D. Klecha
J. Sens. Sens. Syst., 5, 17–23, https://doi.org/10.5194/jsss-5-17-2016, https://doi.org/10.5194/jsss-5-17-2016, 2016
Short summary
Short summary
The aim of this paper is to discuss different models that describe atmospheric transmission in the infrared. They were compared in order to choose the most appropriate one for certain atmospheric conditions. Universal models and different inaccuracies connected with them were analysed in this paper. There have been models analysed from the literature, and these are used in infrared cameras.
H. S. Wasisto, S. Merzsch, E. Uhde, A. Waag, and E. Peiner
J. Sens. Sens. Syst., 4, 111–123, https://doi.org/10.5194/jsss-4-111-2015, https://doi.org/10.5194/jsss-4-111-2015, 2015
Short summary
Short summary
The performance of a low-cost partially integrated cantilever-based airborne nanoparticle (NP) detector (CANTOR-1) is evaluated in terms of its real-time measurement and robustness. The device is used for direct reading of exposure to airborne carbon engineered nanoparticles (ENPs) in indoor workplaces.
S. G. Nedilko, S. L. Revo, V. P. Chornii, V. P. Scherbatskyi, and M. S. Nedielko
J. Sens. Sens. Syst., 4, 31–36, https://doi.org/10.5194/jsss-4-31-2015, https://doi.org/10.5194/jsss-4-31-2015, 2015
Short summary
Short summary
Microcrystalline cellulose, microcrystalline nitrite powders of common formulae MNO2, (M = Na, K) and two-component materials (cellulose + nitrite) have been prepared and characterized by means of optical microscopy and luminescence spectroscopy.The method of determining the nitrite compound traces via their sorption by cellulose using luminescent properties of the NO2- molecular ion has been developed and the low limit of NaNO2 determination in water solution was evaluated as 0.035 mg/l.
D. Puglisi, J. Eriksson, C. Bur, A. Schuetze, A. Lloyd Spetz, and M. Andersson
J. Sens. Sens. Syst., 4, 1–8, https://doi.org/10.5194/jsss-4-1-2015, https://doi.org/10.5194/jsss-4-1-2015, 2015
Short summary
Short summary
This study aims at the development of high-performance and cost-efficient gas sensors for sensitive detection of three specific hazardous gases, i.e., formaldehyde, naphthalene, and benzene, commonly present in indoor environments in concentrations of health concern. We used silicon carbide field effect transistors to investigate the sensor performance and characteristics under different levels of relative humidity up to 60%, demonstrating excellent detection limits in the sub-ppb range.
C. Bur, M. Bastuck, A. Schütze, J. Juuti, A. Lloyd Spetz, and M. Andersson
J. Sens. Sens. Syst., 3, 305–313, https://doi.org/10.5194/jsss-3-305-2014, https://doi.org/10.5194/jsss-3-305-2014, 2014
T. Mazingue, M. Lomello-Tafin, M. Passard, C. Hernandez-Rodriguez, L. Goujon, J.-L. Rousset, F. Morfin, and J.-F. Laithier
J. Sens. Sens. Syst., 3, 273–280, https://doi.org/10.5194/jsss-3-273-2014, https://doi.org/10.5194/jsss-3-273-2014, 2014
Short summary
Short summary
In this article, we propose detecting hydrogen (H2) traces at room temperature with nanostructured PdPt/Al2O3 catalysts. We measure the temperature rise during the exothermic oxidation of H2 by the catalyst. An appropriate formulation of about 1 mg of PdPt/Al2O3 leads to reversible thermal responses of 3°C in only 5 s. We show that this active material is a promising candidate for autonomous and reversible passive transducers for H2 sensors working at room temperature in explosive atmospheres.
M. Leidinger, T. Sauerwald, W. Reimringer, G. Ventura, and A. Schütze
J. Sens. Sens. Syst., 3, 253–263, https://doi.org/10.5194/jsss-3-253-2014, https://doi.org/10.5194/jsss-3-253-2014, 2014
Short summary
Short summary
An approach for detecting hazardous volatile organic compounds (VOCs) in ppb and sub-ppb concentrations is presented. Using metal oxide semiconductor (MOS) gas sensors in temperature cycled operation, VOCs in trace concentrations are successfully identified against a varying ethanol background of up to 2 ppm. For signal processing, linear discriminant analysis is applied to single sensor data and sensor fusion data. Integrated gas sensor systems using the same MOS sensors were characterized.
F. P. Pentaris
J. Sens. Sens. Syst., 3, 145–165, https://doi.org/10.5194/jsss-3-145-2014, https://doi.org/10.5194/jsss-3-145-2014, 2014
B. Fabbri, S. Gherardi, A. Giberti, V. Guidi, and C. Malagù
J. Sens. Sens. Syst., 3, 61–67, https://doi.org/10.5194/jsss-3-61-2014, https://doi.org/10.5194/jsss-3-61-2014, 2014
Cited articles
Akedo, J.: Aerosol deposition of ceramic thick films at room temperature: densification mechanism of ceramic layers, J. Am. Ceram. Soc., 89, 1834–1839, 2006.
Akedo, J.: Room Temperature Impact Consolidation (RTIC) of Fine Ceramic Powder by Aerosol Deposition Method and Applications to Microdevices, J. Thermal Spray Technol., 17, 181–198, 2008.
Akiyama, M., Zhang, Z., Tamaki, J., Miura, N., and Yamazoe, N.: Tungsten oxide-based semiconductor sensor for detection of nitrogen oxides in combustion exhaust, Sensors and Actuators B: Chemical, 13–14, 619–620, 1993.
Alkemade, U. G. and Schumann B.: Engines and exhaust after treatment systems for future automotive applications, Solid State Ionics, 177, 2291–2296, 2006.
Bektas, M., Schönauer-Kamin, D., Hagen, G., Mergner, A., Bojer, C., Lippert, S., Milius, W., Breu, J., and Moos, R.: BaFe0.7Ta0.3O3-δ- a material for temperature independent resistive oxygen sensors, Sensors and Actuators B: Chemical, 190, 208–213, 2014.
Blase, R., Härdtl, K., and Schönauer, U.: Oxygen Sensor Based on Non-Doped Cuprate, United States Patent Specification, US 5, 792, 666, 1997.
Fergus, J. W.: Perovskite oxides for semiconductor-based gas sensors review, Sensors and Actuators B: Chemical, 123, 1169–1179, 2007.
Fleischer, M. and Meixner, H.: Oxygen sensing with long-term stable Ga2O3 thin films, Sensors and Actuators B: Chemical, 5, 115–119, 1991.
Gerblinger, J., Hauser, M., and Meixner, H.: Electric and Kinetic Properties of Screen-Printed Strontium Titanate Films at High Temperatures, J. Am. Ceram. Soc., 78, 1451–1456, 1995.
Huusko, J., Lantto, V., and Torvela, H.: TiO2 thick-film gas sensors and their suitability for NOx monitoring, Sensors and Actuators B: Chemical, 15–16, 245–248, 1993.
Ivers-Tiffée, E., Härdtl, K. H., Menesklou, W., and Riegel, J.: Principles of solid state oxygen sensors for lean combustion gas control, Electrochimica Acta, 47, 807–814, 2001.
Kim, J. S., Hwang, I. S., Kim, S. J., Lee, C. Y., and Lee, J. H.: CuO nanowire gas sensors for air quality control in automotive cabin, Sensors and Actuators B: Chemical , 135, 298–303, 2008.
Lebedev, M., Akedo, J., and Ito, T.: Substrate heating effects on hardness of an α-Al2O3 thick film formed by aerosol deposition method, J. Crystal Growth, 275, e1301–e1306, 2005.
Marr, I., Groß, A., and Moos, R.: Overview on conductometric solid-state gas dosimeters, J. Sens. Sens. Syst., 3, 29–46, https://doi.org/10.5194/jsss-3-29-2014, 2014.
Menesklou, W., Schreiner, H. J., Härdtl, K. H., and Tiffée, E. I.: High temperature oxygen sensors based on doped SrTiO3, Sensors and Actuators B: Chemical, 59, 184–189, 1999.
Merkle, R. and Maier, J.: How is oxygen incorporated into oxides? A comprehensive kinetic study of a simple solid-state reaction with SrTiO3 as a model material, Angewandte Chemie-International Edition, 47, 3874–3894, 2008.
Moos, R., Rettig, F., Hürland, A., and Plog, C.: Temperature-independent resistive oxygen exhaust gas sensor for lean-burn engines in thick film technology, Sensors and Actuators B: Chemical, 93, 43–50, 2003.
Moos, R., Izu, N., Rettig, F., Reiß, S., Shin, W., and Matsubara, I.: Resistive Oxygen Gas Sensors for Harsh Environments, Sensors, 11, 3439–3465, 2011.
Moseley, P. T. and Williams, D. E.: Gas sensors based on oxides of early transition metals, Polyhedron, 8, 1615–1618, 1989.
Park, K. and Logothetis, E. M.: Oxygen sensing with Co1- xMgxO ceramics, ECS J. Solid State Sci. Technol., 124, 1143–1446, 1977.
Penza, M., Martucci, C., and Cassano, G.: NOx gas sensing characteristics of WO3 thin films activated by noble metals (Pd, Pt, Au) layers, Sensors and Actuators B: Chemical , 50, 52–59, 1998.
Riegel, J., Neumann, H., and Wiedenmann, H.-M.: Exhaust gas sensors for automotive emission control, Solid State Ionics, 152–153, 783–800, 2002.
Rettig, F., Moos, R., and Plog, C.: Poisoning of temperature independent resistive oxygen sensors by sulfur dioxide, J. Electroceram., 13, 733–738, 2004.
Sahner, K., Moos, R., Matam, M., Tunney, J., and Post, M.: Hydrocarbon sensing with thick and thin film p-type conducting perovskite materials, Sensors and Actuators B: Chemical, 108, 102–112, 2005.
Sahner, K., Straub, J., and Moos, R.: Cuprate-ferrate compositions for temperature independent resistive oxygen sensors, J. Electroceramics, 16, 179–186, 2006a.
Sahner, K., Moos, R., Izu, N., Shin, W., and Murayama, N.: Response kinetics of temperature-independent resistive oxygen sensor formulations: a comparative study, Sensors and Actuators B: Chemical, 113, 112–119, 2006b.
Sahner, K., Kaspar, M., and Moos, R.: Assessment of the novel aerosol deposition method for room temperature preparation of metal oxide gas sensor films, Sensors and Actuators B: Chemical, 139, 394–399, 2009.
Satake, K., Katayama, A., Ohkoshi, H., Nakahara, T., and Takeuchi, T.: Titania NOx sensors for exhaust monitoring, Sensors and Actuators B: Chemical, 20, 111–117, 1994.
Sayago, I., Gutiérrez, J., Arés, L., Robla, J. I., Horrillo, M. C., Getino, J., Rino, J., and Agapito, J. A.: The effect of additives in tin oxide on the sensitivity and selectivity to NOx and CO, Sensors and Actuators B: Chemical, 26–27, 19–23, 1995.
Schönauer, U.: Response times of resistive thick-film oxygen sensors. Sensors and Actuators B: Chemical, 4, 431–436, 1991.
Wiegleb, G. and Heitbaum, J.: Semiconductor gas sensor for detecting NO and CO traces in ambient air of road traffic, Sensors and Actuators B: Chemical, 17, 93–99, 1994.
Williams, D. E., McGeehin, P., and Tofield, B. C.: Oxygen Sensors, US Patent 4, 454–494, 1982.
Yu, C., Shimizu, Y., and Arai, H.: Investigation on a lean-burn oxygen sensor using perovskite-type oxides, Chem. Lett., 4, 563–566, 1986.
Zhou, X., Sørensen, O. T., and Xu, Y.: Defect structure and oxygen sensing properties of Mg-doped SrTiO3 thick film sensors, Sensors and Actuators B: Chemical, 41, 177–182, 1997.
