Sensing with electromagnetic radiation: a review. Part 2: long wavelengths

Abstract

Purpose

The purpose of this paper is to review the industrial sensing applications of electromagnetic radiation (EMR) and is in two parts. This, the second part, considers the infrared (IR) to radio‐frequency (RF) spectral regions.

Design/methodology/approach

This paper discusses the sensing applications of EMR in the IR to RF region, through reference to the techniques employed, products and their applications.

Findings

This paper shows that this spectral region is used in a diversity of sensors for the measurement of physical variables, gases and chemical compounds. The most widely used phenomena are absorption and reflection. Applications are found in a wide range of industries.

Originality/value

This paper provides a detailed review of the sensing uses of EMR with wavelengths longer than visible light.

Citation

Bogue, R. (2009), "Sensing with electromagnetic radiation: a review. Part 2: long wavelengths", Sensor Review, Vol. 29 No. 3, pp. 203-210. https://doi.org/10.1108/02602280910967611