Results 21 to 30 of about 3,945,385 (300)

Metal Oxide Based Heterojunctions for Gas Sensors: A Review

open access: yesNanomaterials, 2021
The construction of heterojunctions has been widely applied to improve the gas sensing performance of composites composed of nanostructured metal oxides. This review summarises the recent progress on assembly methods and gas sensing behaviours of sensors
Shulin Yang   +5 more
doaj   +1 more source

Source Separation Using Sensor’s Frequency Response: Theory and Practice on Carbon Nanotubes Sensors

open access: yesSensors, 2019
Nowadays, there is an increased demand in integrated sensors for electronic devices. Multi-functional sensors provide the same amount of data using fewer sensors. Carbon nanotubes are non-selectively sensitive to temperature, gas and strain. Thus, carbon
Aurore Quelennec   +3 more
doaj   +1 more source

Electrically Transduced Gas Sensors Based on Semiconducting Metal Oxide Nanowires

open access: yesSensors, 2020
Semiconducting metal oxide-based nanowires (SMO-NWs) for gas sensors have been extensively studied for their extraordinary surface-to-volume ratio, high chemical and thermal stabilities, high sensitivity, and unique electronic, photonic and mechanical ...
Ying Wang   +3 more
doaj   +1 more source

Whisking mechanics and active sensing [PDF]

open access: yesCurrent Opinion in Neurobiology, 2016
We describe recent advances in quantifying the three-dimensional (3D) geometry and mechanics of whisking. Careful delineation of relevant 3D reference frames reveals important geometric and mechanical distinctions between the localization problem ('where' is an object) and the feature extraction problem ('what' is an object).
Nicholas E, Bush   +2 more
openaire   +2 more sources

Cognitive node selection and assignment algorithms for weighted cooperative sensing in radar systems [PDF]

open access: yes, 2009
For the radar spectrum to be shared efficiently a good sensing capability within a secondary cognitive communication system is required. In this paper, the swept radar's rotation mechanism is explored to improve the sensing performance.
Williams, C   +7 more
core   +1 more source

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

open access: yesChemosensors, 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   +4 more
doaj   +1 more source

Structural and gas-sensing properties of CuO–CuxFe3−xO4 nanostructured thin films [PDF]

open access: yes, 2010
Nanocrystalline CuO–CuxFe3−xO4 thin films were developed using a radio-frequency sputtering method followed by a thermal oxidation process. Thin films were deposited applying two very different conditions by varying the argon pressure and the target-to ...
Pasquet, Isabelle   +17 more
core   +1 more source

Room-Temperature H2 Gas Sensing Characterization of Graphene-Doped Porous Silicon via a Facile Solution Dropping Method

open access: yesSensors, 2017
In this study, a graphene-doped porous silicon (G-doped/p-Si) substrate for low ppm H2 gas detection by an inexpensive synthesis route was proposed as a potential noble graphene-based gas sensor material, and to understand the sensing mechanism.
Nu Si A. Eom   +5 more
doaj   +1 more source

CuxO Nanostructure-Based Gas Sensors for H2S Detection: An Overview

open access: yesChemosensors, 2021
H2S gas is a toxic and hazardous byproduct of the oil and gas industries. It paralyzes the olfactory nerves, with concentrations above 100 ppm, resulting in loss of smell; prolonged inhalation may even cause death.
Sachin Navale   +5 more
doaj   +1 more source

The calcium-sensing receptor and insulin secretion : a role outside systemic control 15 years on [PDF]

open access: yes, 2008
In the 15 years since the identification and characterisation of the extracellular calcium-sensing receptor (CaR), it has become increasingly apparent that this cationic binding receptor is found in many tissues, not associated with the control of plasma
Hills, Claire E.   +2 more
core   +1 more source

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