scholarly journals Modification of inkjet printer for polymer sensitive layer preparation on silicon-based gas sensors

AIP Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 041327 ◽  
Author(s):  
Tianjian Li ◽  
Ying Dong ◽  
Dengpeng Yuan ◽  
Yujin Liu
Keyword(s):  
Gas Sensors ◽  
Sensitive Layer ◽  
Inkjet Printer ◽  
Silicon Based

Development of Ammonia Gas Sensors with PPy Films on Base of Mg2SiO4 Porous Ceramics for Better Behavior of Chemo-Electrical Relationship

2013 ◽  
Vol 760-762 ◽  
pp. 363-367
Author(s):  
He Lan Ye ◽  
Zhao Xian Xiong ◽  
Hao Xue ◽  
Hong Qiu ◽  
Chun Xiao Song
Keyword(s):  
Gas Sensors ◽  
Xrd Analysis ◽  
Porous Ceramics ◽  
X Ray Diffraction ◽  
Sensitive Layer ◽  
Ammonia Gas ◽  
Linear Behavior ◽  
Resistance Variation ◽  
Relationship Of ◽  
Ammonia Gas Sensors

A new kind of gas sensors were prepared via chemical polymerization of polypyrrole (PPy) as sensitive layer on base of Mg2SiO4 porous ceramics. Thermal stability of the PPy sensitive layer was characterized with thermogravimetric analysis, including TG and DTA. Chemical structure of the samples was identified with X-ray diffraction (XRD) analysis. Microstructure of the PPy film was observed by a scanning electron microscope (SEM). Chemo-electrical relationship of the gas sensors was investigated with the resistance variation of PPy films at different gas concentrations. Based on series of experimental results, linear behavior of the chemo-electrical relationship was obtained for the gas sensor, y=0.00344x+1.33754, with R2=0.9734.

Gold and platinum as ozone sensitive layer in work-function gas sensors

2001 ◽  
Vol 80 (3) ◽  
pp. 174-178 ◽  
Author(s):  
M. Zimmer ◽  
M. Burgmair ◽  
K. Scharnagl ◽  
A. Karthigeyan ◽  
T. Doll ◽  
...  
Keyword(s):  
Work Function ◽  
Gas Sensors ◽  
Sensitive Layer

scholarly journals Overview on conductometric solid-state gas dosimeters

2014 ◽  
Vol 3 (1) ◽  
pp. 29-46 ◽  
Author(s):  
I. Marr ◽  
A. Groß ◽  
R. Moos
Keyword(s):  
Solid State ◽  
Gas Sensors ◽  
Field Effect Transistors ◽  
Sensitive Layer ◽  
Mean Values ◽  
The Past ◽  
Literature Overview ◽  
Direct Readout ◽  
Selective Accumulation

Abstract. The aim of this article is to introduce the operation principles of conductometric solid-state dosimeter-type gas sensors, which have found increased attention in the past few years, and to give a literature overview on promising materials for this purpose. Contrary to common gas sensors, gas dosimeters are suitable for directly detecting the dose (also called amount or cumulated or integrated exposure of analyte gases) rather than the actual analyte concentration. Therefore, gas dosimeters are especially suited for low level applications with the main interest on mean values. The applied materials are able to change their electrical properties by selective accumulation of analyte molecules in the sensitive layer. The accumulating or dosimeter-type sensing principle is a promising method for reliable, fast, and long-term detection of low analyte levels. In contrast to common gas sensors, few devices relying on the accumulation principle are described in the literature. Most of the dosimeter-type devices are optical, mass sensitive (quartz microbalance/QMB, surface acoustic wave/SAW), or field-effect transistors. The prevalent focus of this article is, however, on solid-state gas dosimeters that allow a direct readout by measuring the conductance or the impedance, which are both based on materials that change (selectively in ideal materials) their conductivity or dielectric properties with gas loading. This overview also includes different operation modes for the accumulative sensing principle and its unique features.

scholarly journals Convenient CNT-Paper Gas Sensors Prepared by a Household Inkjet Printer

ACS Omega ◽  
2020 ◽  
Vol 5 (51) ◽  
pp. 32877-32882
Author(s):  
Yan Yuan ◽  
Xiaolei Tang ◽  
Li Jiang ◽  
Yujie Yang ◽  
Yanhui Zhou ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Inkjet Printer

Study of Sensitivity of Porous Thick-Film Elements Based on SnO2 towards Hydrogen Concentration in Air

2020 ◽  
Vol 25 (6) ◽  
pp. 539-547
Author(s):  
V.V. Amelichev ◽  
◽  
S.S. Generalov ◽  
A.V. Nikolaeva ◽  
S.A. Polomoshnov ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Porous Metal ◽  
High Sensitivity ◽  
Fast Response ◽  
Gas Composition ◽  
Sensitive Layer ◽  
Initial Suspension ◽  
Semiconductor Gas Sensors ◽  
Manufacturing Technologies

The semiconductor gas sensors with low power consumption have high sensitivity and fast response and their manufacturing technologies permit to reduce the dimensions of the transducer. In production of the semiconductor gas sensors the formation of metal-oxide sensitive layer is an important issue, in particular, the process of combination of the high-porous metal-oxide layer and integrated structures. In the paper, the results of the study on experimental transducers of the composition of gas with porous gas-sensitive layer have been presented. The gas-sensitive layer has been formed by the method of suspension inkjet printing of SnO based suspension with further annealing. The comparison of the sensitivity of the experimental samples of the gas composition transducers with the gas-sensitive layers, formed from two variants of initial suspension: based on pure SnO and SnO doped with Cr and Nb, has been performed. The dependence of variation of conductivity of the gas composition of the integrated transducer specimen on the H concentration in the air has been obtained. It has been found that the gas-sensitive layer based on SnO with Cr and Nb additives has higher sensitivity to changes in the detected gas concentration due to higher effective surface area and suppressed grains agglomeration.

Polyaniline as a new sensitive layer for gas sensors

2003 ◽  
Vol 475 (1-2) ◽  
pp. 1-15 ◽  
Author(s):  
Dominique Nicolas-Debarnot ◽  
Fabienne Poncin-Epaillard
Keyword(s):  
Gas Sensors ◽  
Sensitive Layer
Sign in / Sign up

Export Citation Format

Share Document