Magnetic tubules

被引：28

作者：

Letellier, D

Sandre, O

Menager, C

Cabuil, V

Lavergne, M

机构：

[1] Univ Paris 06, Lab Liquides Ion & Interfaces Chargees, F-75252 Paris 05, France

[2] Univ Paris 06, URA CNRS, Lab Mat Desordonnes & Heterogenes, F-75252 Paris, France

[3] Univ Paris 06, Serv Microscopie Elect Grp Reg Mesures Phys, F-75252 Paris 05, France

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC MATERIALS SENSORS AND SYSTEMS | 1997年 / 5卷 / 02期

关键词：

magnetic fluids; self-assemblies; tubules; phospholipids; electrostatic interaction;

D O I：

10.1016/S0928-4931(97)00035-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dispersion of tubules made of diacetylenic phospholipids (DC8,9PC), in aqueous colloidal dispersions of magnetic nanoparticles is studied as a function of the sign of particles surface charges. In every case the tubule-vesicle transition temperature is decreased by the presence of the magnetic nanoparticles. Electrophoresis experiments on the tubules in pure water permits to conclude on a negative apparent surface charge. We study the magnetic response of the system to a static or stationary rotating field and to a magnetic field gradient, These experiments reveal an excess or a lack of magnetic permeability between tubules and the surrounding medium. Electron microscopy confirms these results showing an electrostatic interaction between the phospholipidic bilayer and the magnetic particles. (C) 1997 Elsevier Science S.A.

引用

页码：153 / 162

页数：10

共 29 条

[1] TEMPLATE MINERALIZATION OF SELF-ASSEMBLED ANISOTROPIC LIPID MICROSTRUCTURES [J].