Probing the confined dynamics of a spherical colloid close to a surface by combined optical trapping and reflection interference contrast microscopy

被引：6
|
作者：
Nadal, F
Dazzi, A
Argoul, F
Pouligny, B
机构：
[1] Ctr Rech Paul Pascal, F-33600 Pessac, France
[2] Ctr Univ Paris Sud, LURE, F-91898 Orsay, France
来源：
APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 23期
关键词：
D O I：
10.1063/1.1423790
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A reflection interference contrast microscope and a two-beam optical trap have been combined to measure the interaction force between a colloidal particle (latex) and a solid wall (quartz plate). The particle-wall separation is measured with a nanometric resolution. The technique reveals the film drainage effect when the particle gets close to the wall and allows deducing the particle-wall equilibrium force profile, in the 0.1 to 10 pN range. (C) 2001 American Institute of Physics.
引用
收藏
页码：3887 / 3889
页数：3
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