Elastic properties of polyelectrolyte capsules studied by atomic-force microscopy and RICM

被引：191

作者：

Dubreuil, F ^{[1
]}

Elsner, N ^{[1
]}

Fery, A ^{[1
]}

机构：

[1] Max Planck Inst Colloid & Interface Res, D-14424 Potsdam, Germany

来源：

EUROPEAN PHYSICAL JOURNAL E | 2003年 / 12卷 / 02期

关键词：

D O I：

10.1140/epje/i2003-10056-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mechanical properties of polyelectrolyte multilayer capsules were studied using a new method combining atomic-force microscopy and reflection interference contrast microscopy. By measuring the force vs. deformation for poly(styrene sulfonate)/poly(allylamine) capsules the existence of different deformation regimes depending on the applied deformation was shown. The present paper focuses on the small-deformation regime. The elastic response of the deformed capsule was studied as a function of the wall thickness and the capsule size, and showed the theoretically expected variations. The Young modulus obtained from the experiments ranges between 1.3 and 1.9 GPa.

引用

页码：215 / 221

页数：7

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