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Nanogenerators and self-powered nanosensors have shown the potential to power low-consumption electronics and human-machine interfaces, but their practical implementation requires reliable, environmentally friendly and scalable, processes…

We demonstrate the applicability of 2-photon Rydberg excitations of nitric oxide (NO) at room temperature in a gas mixture with helium (He) as an optogalvanic gas sensor. The charges created initially from succeeding collisions of excited…

Graphene oxide (GO)-based humidity sensors are attracting widespread attention due to their high responsivity and low cost. However, GO-based humidity sensors generally suffer from slow response and recovery as well as poor stability,etc.…

Mesoscale and Nanoscale Physics · Physics 2024-10-04 Gengwu Ge , Ningfeng Ke , Hongliang Ma , Jie Ding , Wendong Zhang , Xuge Fan

Using density functional theory combined with nonequilibrium Green's function method, the transport properties of borophene-based nano gas sensors with gold electrodes are calculated, and comprehensive understandings regarding the effects…

Mesoscale and Nanoscale Physics · Physics 2021-06-29 Yueyue Tian , Houping Yang , Junjun Li , Shunbo Hu , Shixun Cao , Wei Ren , Yin Wang

A novel ultra-sensitive Parity-Time symmetry based Graphene FET (PTS-GFET) sensor is studied for gas concentration detection. The PTS-GFET sensor effectively integrates the sensitivity of the PT symmetry around its Exceptional Point (EP)…

Applied Physics · Physics 2020-07-10 Lu Ou , Shaolin Liao

A thermal position sensor was fabricated and evaluated. The device consists of an array of temperature sensing elements, fabricated entirely on a plastic substrate. A novel fabrication technology was implemented which allows direct…

General Physics · Physics 2008-01-08 A. Petropoulos , G. Kaltsas , D. Goustouridis , A. G. Nassiopoulou

Portable and cost-effective gas sensors are gaining demand for a number of environmental, biomedical and industrial applications, yet current devices are confined into specialized labs and cannot be extended to general use. Here, we…

Instrumentation and Detectors · Physics 2020-04-10 Giuseppe Antonacci , Jeroen Goyvaerts , Haolan Zhao , Bettina Baumgartner , Bernhard Lendl , Roel Baets

Integrated, highly sensitive and reversible sensor devices for toxic and hazardous gases in environmental pollution monitoring can be realized with graphene-based materials. Here we show that, single layer graphene grown on SiC can be…

Methane (CH_4) gas sensing properties of novel vanadium dioxide (VO_2) nanostructured films is reported for the first time. The single phase nanostructures are synthesized by pulsed dc-magnetron sputtering of V target followed by oxidation…

Materials Science · Physics 2015-09-02 A. K. Prasad , S. Amirthapandian , S. Dhara , S. Dash , N. Murali , A. K. Tyagi

Accessing fluid infiltration in nanogranular coatings is an outstanding challenge, of relevance for applications ranging from nanomedicine to catalysis. A sensing platform, allowing to quantify the amount of fluid infiltrated in a…

Gas sensors are an indispensable ingredient of the modern society, finding their use across a range of industries that include manufacturing, environmental protection and control, automotive and others. Novel applications have been arising,…

Instrumentation and Detectors · Physics 2022-09-13 Marko Spasenović , Stevan Andrić , Tijana Tomašević-Ilić

ZnS nanorods and Cr2O3 nanoparticle decorated ZnS nanorods were synthesized using facile hydrothermal techniques and their ethanol sensing properties were examined. X-ray diffraction and scanning electron microscopy revealed the good…

Materials Science · Physics 2016-09-21 Gun-Joo Sun , Hyejoon Kheel , Taegyung Ko , Chongmu Lee

This paper presents an electrolytically gated broadband microwave sensor where atomically-thin graphene layers are integrated into coplanar waveguides and coupled with microfluidic channels. The interaction between a solution under test and…

Integrated photonic sensors have attracted significant attention recently for their potential for high-density integration. However, they face challenges in sensing gases with high sensitivity due to weak light-gas interaction. Slow light,…

In this study we investigated the sorption ability of Ge20Se80 thin films applied as active layers of quartz crystal microbalance (QCM) for NO2 gas sensing. To identify the chalcogenide system appropriate for gas sensing, we provided data…

Materials Science · Physics 2015-06-05 Ping Chen , Maria Mitkova , Dmitri A. Tenne , Kasandra Wolf , Velichka Georgieva , Lazar Vergov

MQ-6 Semiconductor Sensor for Combustible Gas detection is a Sensitive Gas sensor. The sensitive material of this MQ-6 gas sensor is SnO2, which works with lower conductivity in clean air. When the target combustible gas exist, the sensors…

Signal Processing · Electrical Eng. & Systems 2023-05-23 Ram Prasad

: It goes without saying that at present MEMS Technology became one of the latest and emerging methods because of its miniaturization and effective cost. Now near the beginning recognition of disease became a major challenge in front of…

Materials Science · Physics 2021-11-04 Tejas S. Fanse

A significantly large scope is available for the scientific and engineering developments of high-throughput ultra-high sensitive oxygen sensors. We give a perspective of oxygen sensing for two physical states of matters - solid-state…

Formaldehyde, a known human carcinogen, is a common indoor air pollutant. However, its real-time and selective recognition from interfering gases remains challenging, especially for low-power sensors suffering from noise and baseline drift.…

We describe a sensor for the measurement of thin dielectric layers capable of operation in a variety of environments. The sensor is obtained by microfabricating a capacitor with interleaved aluminum fingers, exposed to the dielectric to be…

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