Optical microrheology using rotating laser-trapped particles
Optical microrheology using rotating laser-trapped particles
复制标题
DOI:
10.1103/physrevlett.92.198104
复制
发表时间:
2004-05-14
影响因子:
8.6
通讯作者:
Rubinsztein-Dunlop, H
中科院分区:
文献类型:
--
作者:
Bishop, AI;Nieminen, TA;Rubinsztein-Dunlop, H
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.