Direct measurement of infinitesimal depletion force in a colloid-polymer mixture by laser radiation pressure

被引：94

作者：

Ohshima, YN ^{[1
]}

Sakagami, H ^{[1
]}

Okumoto, K ^{[1
]}

Tokoyoda, A ^{[1
]}

Igarashi, T ^{[1
]}

Shintaku, KB ^{[1
]}

Toride, S ^{[1
]}

Sekino, H ^{[1
]}

Kabuto, K ^{[1
]}

Nishio, I ^{[1
]}

机构：

[1] PHOTON FORCE RES LAB,FUJI,SHIZUOKA 417,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.78.3963

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is widely believed that depletion force causes formation of colloidal crystal or flocculation in the stable colloidal suspension mixed with nonadsorbing polymers. This force works between a colloidal particle and plane, which can be regarded as a sphere with infinite radius. We report a novel technique that enables us to measure the depletion force working between a colloidal particle and a glass surface using laser radiation pressure. We found that the observed force almost coincides with the predicted one.

引用

页码：3963 / 3966

页数：4

共 12 条

[1] PHASE TRANSITION IN ELASTIC DISKS [J].