청각 유모세포를 모사한 미소기계적 능동 증폭기 Haircell-inspired Micromechanical Active Amplifiers Using the Mechanical Resonance Modulated by Variable Stiffness Springs

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We present a micromechanical active amplifier, inspired from the principle of the outer hair cells in cochlea, amplifying both displacement and force. The present micromechanical active amplifier modulates the resonant carrier motion using the variable stiffness spring whose stiffness changes proportionally to the input motion. We design, fabricate, and characterize two types of the amplifiers A and B, each having the variable stiffness spring fur the maximum displacement gain and force gain, respectively. In the experimental study, the amplifier A shows the displacement gain of 5.62, which is 2.15 times larger than that of the amplifier 3. The amplifier B shows the force gain of 10.0, resulting in 1.26 times larger value compared to that of the amplifier A. We experimentally verify that the haircell-inspired micromechanical amplifiers are capable to amplify both displacement and force.
Publisher
대한기계학회
Issue Date
2007-09
Language
Korean
Citation

대한기계학회논문집 A, v.31, no.11, pp.1077 - 1082

ISSN
1226-4873
URI
http://hdl.handle.net/10203/91918
Appears in Collection
BiS-Journal Papers(저널논문)
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