Materials selection for gas sensing. An HSAB perspective

Author

Serban, Bogdan-Catalin ; Brezeanu, Mihai ; Cobianu, Cornel ; Costea, Stefan ; Buiu, Octavian ; Stratulat, Alisa ; Varachiu, Nicolae

Author_Institution

Sensors & Wireless Lab. Bucharest (SWLB), Honeywell Romania SRL, Bucharest, Romania

fYear

2014

fDate

13-15 Oct. 2014

Firstpage

21

Lastpage

30

Abstract

This paper introduces the Hard Soft Acid Base (HSAB) concept as a promising tool for the selection of gas sensing layers. Target gas molecule - sensitive layer tandems are discussed and interpreted in the terms of this theory. Sensing layers suitable for carbon dioxide, nitrogen dioxide, sulphur dioxide, and hydrogen sulphide detection are presented and classified according to this concept. For oxygen and mineral acids detection, an indirect HSAB approach is discussed. The paper explains how the HSAB principle can be useful in designing gas sensing layers for different types of sensing structures, such as: surface acoustic waves (SAW), colorimetric, chemoresistive, etc.

Keywords

carbon compounds; gas sensors; hydrogen compounds; nitrogen compounds; organic compounds; oxygen; sulphur compounds; CO₂; H₂S; NO₂; O; SAW; SO₂; carbon dioxide; chemoresistive; colorimetric; gas sensing layer; hard soft acid base; hydrogen sulphide detection; indirect HSAB approach; material selection; mineral acid detection; nitrogen dioxide; oxygen detection; sulphur dioxide; surface acoustic wave; target gas molecule; Oscillators; Plastics; Sensitivity; Silicon; Surface acoustic waves; Temperature sensors; Gas Molecule; Hard Soft Acid Base (HSAB) Concept; Sensitive Layers; Sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference (CAS), 2014 International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4799-3916-9

Type

conf

DOI

10.1109/SMICND.2014.6966381

Filename

6966381