| Summary: | 碩士 === 國立雲林科技大學 === 機械工程系碩士班 === 92 === In this paper, I used the theory offered by chi-chuan which is design fringe
capacitive sensors can analysis nano-scale by ANSYS. I designed a 1.5-ring fringe
capacitive sensors to reduce the multi-ring fringe capacitive sensors model simplest
and impoved ability of the sensor. Although the sensitivity of the multi-ring fringe
capacitive sensors is better than the sensitivity of the single ring. Relatively the
analysis model of multi-ring mode is more difficult than single ring mode, and more
software and hardware were afforded. Of course, the fabrication is more difficult. So
we need to find the simplest multi-ring fringe capacitive sensors model to improve the
sensitivity of the single ring mode. And the result of we got is available.
I get a new idea from the conclusion that is studied by some people before me.
The conclusion is under the same linear error when we want to the sensor have higher
sensitivity, the measurable area had became smaller than other. And the sample must
approach to sensor. So we have a new idea with the sensor design how to raise
sensitivity availably, also qualify enough measurable area. So when we design the
1.5-ring sensor model, we also do some systematic analysis to find the available
design method. And we arrived our expectation.
We also find when we do nano-scale analysis by ANSYS. There exists some
condition. The condition is the feature size can’t differ so much. And we got some
result prove our assumption.
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