Three-dimensional potential analysis of radiation pressure exerted on a single microparticle

被引：48
作者：
Sasaki, K [1 ]
Tsukima, M [1 ]
Masuhara, H [1 ]
机构：
[1] OSAKA UNIV,DEPT APPL PHYS,SUITA,OSAKA 565,JAPAN
来源：
APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 01期
关键词：
D O I：
10.1063/1.119461
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A system that makes it possible to precisely and instantaneously observe a potential energy of laser trapping as a function of three-dimensional position was developed for analyzing radiation pressure acting on a single microparticle in solution. Position sensing with a quadrant photodiode and total internal reflection microscopy are applied for measuring thermal Brownian motion of the trapped particle with similar to 10 nm resolution, and a trapping potential profile is estimated by a thermodynamical analysis based on the Boltzmann distribution. Characteristic features of the present system are discussed. (C) 1997 American Institute of Physics.
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页码：37 / 39
页数：3
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