Fundamental Tests of Physics with Optically Trapped Microspheres. 1st ed. 2013
- 種類:
- 電子ブック
- 責任表示:
- by Tongcang Li
- 出版情報:
- New York, NY : Springer New York : Imprint: Springer, 2013
- 著者名:
- シリーズ名:
- Springer Theses, Recognizing Outstanding Ph.D. Research ;
- ISBN:
- 9781461460312 [146146031X]
- 注記:
- Introduction -- Physical Principle of Optical Tweezers -- Optical Trapping of Glass Microspheres in Air and Vacuum -- Measuring the Instantaneous Velocity of a Brownian Particle in Air -- Towards Measurement of the Instantaneous Velocity of a Brownian Particle in Water -- Millikelvin Cooling of an Optically Trapped Microsphere in Vacuum -- Towards Quantum Ground-State Cooling -- Appendix.
Fundamental Tests of Physics with Optically Trapped Microspheres details experiments on studying the Brownian motion of an optically trapped microsphere with ultrahigh resolution and the cooling of its motion towards the quantum ground state. Glass microspheres were trapped in water, air, and vacuum with optical tweezers; and a detection system that can monitor the position of a trapped microsphere with Angstrom spatial resolution and microsecond temporal resolution was developed to study the Brownian motion of a trapped microsphere in air over a wide range of pressures. The instantaneous velocity of a Brownian particle, in particular, was measured for the very first time, and the results provide direct verification of the Maxwell-Boltzmann velocity distribution and the energy equipartition theorem for a Brownian particle. For short time scales, the ballistic regime of Brownian motion is observed, in contrast to the usual diffusive regime. In vacuum, active feedback is used to cool the center-of-mass motion o - ローカル注記:
- 岐阜大学構成員専用E-BOOKS (Gifu University members only)
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