Optical microrheology using rotating laser-trapped particles

被引：268

作者：

Bishop, AI ^{[1
]}

Nieminen, TA ^{[1
]}

Heckenberg, NR ^{[1
]}

Rubinsztein-Dunlop, H ^{[1
]}

机构：

[1] Univ Queensland, Dept Phys, Ctr Biophoton & Laser Sci, Brisbane, Qld 4072, Australia

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 19期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.92.198104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate an optical system that can apply and accurately measure the torque exerted by the trapping beam on a rotating birefringent probe particle. This allows the viscosity and surface effects within liquid media to be measured quantitatively on a micron-size scale using a trapped rotating spherical probe particle. We use the system to measure the viscosity inside a prototype cellular structure.

引用

页码：198104 / 1

页数：4

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