Control of nonlinear response of nanocarbon mechanical resonators

2015 Fiscal Year Final Research Report

• Project/Area Number: 25286010
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nanostructural physics
• Research Institution: Osaka Prefecture University
• Principal Investigator: Akita Seiji 大阪府立大学, 工学(系)研究科(研究院), 教授 (60202529)
• Co-Investigator(Renkei-kenkyūsha): ARIE Takayuki 大阪府立大学, 工学研究科, 准教授 (80533017)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ナノカーボン / ナノ電気機械システム / 非線形応答 / 遅延効果

Outline of Final Research Achievements

We investigated mechanism of nonlinear responses of nanocarbon mechanical resonators, where experimental results obtained were analyzed by means of molecular dynamics simulations and finite element methods. As a result, we successfully demonstrated the improvement of the quality factor and the control of nonlinearity of the mechanical resonance of the nanocarbon resonator by introducing the additional potential fields such as van-der-Waals or electrostatic potential fields with retardation effect, which acts on the dissipation part of the resonant system and greatly reduces the apparent dissipation. The improvement of the apparent Q-factor and the change of the nonlinearity are expected to contribute to the improvement of sensitivity of nanomechanical-resonator based sensors　and the development of novel nano-electro-mechanical devices.

Free Research Field

ナノデバイス