30 Dec '13, 2pm

How sensitive can tactile pressure sensing get?

How sensitive can tactile pressure sensing get?

When it comes to capacitive tactile pressure sensing, the question often arises: How low can you go? Although a measurement of less than 1 psi is considered to be a super-low pressure in contact mechanics, pressure sensors are sensitive enough to measure the even-more-precise pascal (Pa). But there’s not quite a magic number in terms of measuring very low pressures. After all, practical applications involving extremely low pressures, particularly pressurized spray applications, tend to carry their own unique challenges. Consider a semiconductor manufacturer whose production processes involve the use of a nozzle-type industrial spray to apply various materials and gases. To ensure uniform application, the manufacturer may be interested in measuring the pressure with which the material or gas impacts the surface of whatever is being sprayed. This concept seems simple enough....

Full article: http://www.designnews.com/author.asp?section_id=1365&doc_...

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