Results 21 to 30 of about 84,883 (260)

Cavity-Enhanced Raman Spectroscopy for Food Chain Management

Sensors, 2018
Comprehensive food chain management requires the monitoring of many parameters including temperature, humidity, and multiple gases. The latter is highly challenging because no low-cost technology for the simultaneous chemical analysis of multiple gaseous
Vincenz Sandfort, Jens Goldschmidt, Jürgen Wöllenstein, Stefan Palzer   +3 more
doaj   +1 more source

Recent Advances in Gas Sensing Technology Using Non-Oxide II-VI Semiconductors CdS, CdSe, and CdTe

Chemosensors, 2022
In recent years, there has been an increasing need and demand for gas sensors to detect hazardous gases in the atmosphere, as they are indispensable for environmental monitoring.
Masanori Ando, Hideya Kawasaki, Satoru Tamura, Yoshikazu Haramoto, Yasushi Shigeri   +4 more
doaj   +1 more source

One-Dimensional Nanomaterials in Resistive Gas Sensor: From Material Design to Application

Chemosensors, 2021
With a series of widespread applications, resistive gas sensors are considered to be promising candidates for gas detection, benefiting from their small size, ease-of-fabrication, low power consumption and outstanding maintenance properties.
Ze Wang, Lei Zhu, Shiyi Sun, Jianan Wang, Wei Yan   +4 more
doaj   +1 more source

Rapid characterisation of mixtures of hydrogen and natural gas by means of ultrasonic time-delay estimation [PDF]

Journal of Sensors and Sensor Systems
The implementation of the “power-to-gas” concept, where hydrogen and natural gas are blended and transported in the existing network, requires a quick, on-site method to monitor the content of hydrogen in the mixture. We evaluate a rapid characterisation
J. M. Monsalve, U. Völz, M. Jongmanns, B. Betz, S. Langa, C. Ruffert, J. Amelung, M. Wiersig   +7 more
doaj   +1 more source

Design and Validation of a High-Speed Miniaturized Thermocycler with Peltier Elements for Efficient PCR Thermal Cycling

Sensors
We present a high-speed, miniaturized, Peltier-driven thermocycler for Polymerase Chain Reaction (PCR) with heating rates of 22.25 °C/s and cooling rates of 5.30 °C/s, using a standard aluminum block (a four-well section of a 96-well plate) and laterally
Passar Bamerni, Jan König, Lee-Ann Mistry, Katrin Schmitt, Jürgen Wöllenstein   +4 more
doaj   +1 more source

Odor-Sensing System to Support Social Participation of People Suffering from Incontinence

Sensors, 2016
This manuscript describes the design considerations, implementation, and laboratory validation of an odor sensing module whose purpose is to support people that suffer from incontinence. Because of the requirements expressed by the affected end-users the
Alvaro Ortiz Pérez, Vera Kallfaß-de Frenes, Alexander Filbert, Janosch Kneer, Benedikt Bierer, Pirmin Held, Philipp Klein, Jürgen Wöllenstein, Dirk Benyoucef, Sigrid Kallfaß, Ulrich Mescheder, Stefan Palzer   +11 more
doaj   +1 more source

Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes

Sensors, 2015
Here we report on a new architecture for potentiometric NO2 sensors that features thin 8YSZ electrolytes sandwiched between two porous (La0.8Sr0.2)0.95MnO3 (LSM95) layers—one thick and the other thin—fabricated by the tape casting and co-firing ...
Jie Zou, Yangong Zheng, Junliang Li, Zhongliang Zhan, Jiawen Jian   +4 more
doaj   +1 more source

Recent Progress in Gas Sensor Based on Nanomaterials

Micromachines, 2022
Nanomaterials-based gas sensors have great potential for substance detection. This paper first outlines the research of gas sensors composed of various dimensional nanomaterials.
Danyang Lun, Ke Xu
doaj   +1 more source

Ag₂S-Decorated One-Dimensional CdS Nanorods for Rapid Detection and Effective Discrimination of n-Butanol

Nanomaterials
N-butanol (C4H9OH) is a volatile organic compound (VOC) that is susceptible to industrial explosions. It has become imperative to develop n-butanol sensors with high selectivity and fast response and recovery kinetics.
Yubing Gao, Weirong Zhou, Yong Wang, Yuan Gao, Jiayin Han, Dehao Kong, Geyu Lu   +6 more
doaj   +1 more source

Towards Enhanced Gas Sensor Performance with Fluoropolymer Membranes

Sensors, 2016
In this paper we report on how to increase the selectivity of gas sensors by using fluoropolymer membranes. The mass transport of polar and non-polar gases through a polymer membrane matrix was studied by systematic selection of polymers with different ...
Thorsten Graunke, Katrin Schmitt, Stefan Raible, Jürgen Wöllenstein   +3 more
doaj   +1 more source