Date of Award


Degree Type

Master's Essay - Restricted

Degree Name

Master of Science (MS)


Electrical and Computer Engineering


Because of today's pollution problems, industry and government as well as the proponents of the ecological movement, are all putting more demands on technology to obtain new and better methods to clean up our world. One area of pollution under attack is the discharge of potentially dangerous gases into the atmosphere. Their sources are many - internal combustion engines, factory waste and careless preparation of materials to name a few. Measurements and detection of these vapors is a somewhat expensive problem and the equipment involved is usually complex. Years ago, birds and dogs were used in hazardous places. They were kept under surveillance and if they collapsed, the oxygen supply was no longer adequate and personnel were evacuated to a safer area. Later, electronics made its introduction, but up until now the systems have been complicated and in some cases, it takes highly trained people to operate the equipment. It seems then that what is needed is an inexpensive, simple-to-use, highly reliable device capable of detecting (1) concentrations and distinguishing between various types of gases. This appears to be asking an awful lot, but solid state electronics may offer a solution.