Adhesion prevention of micromechanisms using quantum electromagnetic forces

2016 Fiscal Year Final Research Report

• Project/Area Number: 25390117
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: General applied physics
• Research Institution: University of Hyogo
• Principal Investigator: Inui Norio 兵庫県立大学, 工学研究科, 准教授 (70275311)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: カシミール効果 / カシミール力 / 固着 / 浮揚 / ブラウン運動 / 力計測 / グラフェン

Outline of Final Research Achievements

Micromechcnisms often stop due to the adhesion between parts. The one of forces that cause the adhesion in micromechcnism is the Casimir force, which is generated by the vacuum fluctuations. The Casimir force usually is attractive. However, it can be repulsive if some conditions are satisfied. In this study, we showed that the prevention of the adhesion and the reduction of the friction can be realized using the repulsive Casimir force. In particular, we focused on the levitation of a metallic particle near an air-liquid interface and theoretically investigate the Brownian motion of the levitated particle. Furthermore, we proposed a new method to measure a mass of a single particle levitated within a suspended droplet.

Free Research Field

量子物理学