Open AccessVersatile computer-controlled system for characterization of gas sensing materials
Author(s) -
Meng Zhao,
Jianxing Huang,
M.H. Wong,
Yu Tang,
Chung Wo Ong
Publication year - 2011
Publication title -
review of scientific instruments
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.605
H-Index - 165
eISSN - 1089-7623
pISSN - 0034-6748
DOI - 10.1063/1.3648132
Subject(s) - characterization (materials science) , sensitivity (control systems) , process engineering , relative humidity , computer science , measure (data warehouse) , materials science , humidity , response time , system of measurement , sample (material) , environmental science , nanotechnology , electronic engineering , thermodynamics , data mining , physics , computer graphics (images) , astronomy , engineering
Design of a system used for characterizing gas sensing materials is described. It is distinctive of being able to measure electrical and optical responses of a sample simultaneously, control a number of measurement parameters, perform fast exchange of gaseous environment, and be fully controlled automatically. These features make the system to be versatile in determining most concerned performance indexes of a gas sensing material (e.g., sensitivity, stability, selectivity, response/recovery times, etc.) as functions of various combinations of measurement conditions (e.g., gas concentrations, temperature, total pressure, content of interferants, photo assist, relative humidity, soaking time in a fixed gas concentration, and number of switching cycles in a dynamic test, etc.). Rationales of the designs associated with general gas sensing mechanics are discussed.Department of Applied PhysicsAuthor name used in this publication: M. H. Won
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom