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Author Wolfbeis, Otto S.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Fibre-optic Sensor ♦ Biomedical Science ♦ Optical Sensor ♦ Carbon Dioxide ♦ Fibre Optic Sensor ♦ Electrochemical One ♦ Current Trend ♦ Vivo Experiment ♦ Se Veral Advantage ♦ Antigen Antibody Interaction ♦ Con Tact ♦ Remote Sensing ♦ Fibre End ♦ Waveguide Spectroscopy ♦ Final Section ♦ Physical Parameter ♦ Enzyme Activity ♦ Usual Approach ♦ Analytical Signal ♦ Potential Field ♦ Reference Cell ♦ Optical Fibre ♦ New Principle ♦ Representative Example ♦ Suitable Indicator Chemistry ♦ Immunity Towards Electromagnetic Interference
Abstract Abstract. Optical fibres can be used for remote sensing of chemical and physical parameters. The usual approach is to provide the fibre end with a suitable indicator chemistry or a material that responds to the parameter of interest. In con— tact with the sample, the intensity of reflected, scattered, or re—emitted light is the analytical signal. Aside from se— veral advantages of optical sensors over electrochemical ones (for instance, lack of reference cells and immunity towards electromagnetic interferences), the use of fibres can be ad-vantageous when the samples are inaccessible, for instance, in case of in—vivo experiments. The principles of waveguide spectroscopy are briefly outlined, and representative examples of fibre—optic sensors for temper-ature, oxygen, pH, carbon dioxide and electrolytes are given. Apart from these parameters, which also may be sensed by other techniques, optical sensors have been developed that are based on quite new principles and which can make them useful for sensing glucose, enzyme activities, anaesthetics and antigen— antibody interactions. Potential fields of application are pre-sented, and current trends and concepts discussed in a final section. 1.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article