Using the surface spontaneous depolarization field of ferroelectrics to direct the assembly of virus particles

被引：45

作者：

Dunn, S ^{[1
]}

Cullen, D

Abad-Garcia, E

Bertoni, C

Carter, R

Howorth, D

Whatmore, RW

机构：

[1] Cranfield Univ, SIMS, Cranfield MK43 0AL, Beds, England

[2] Cranfield Univ, IBST, Silsoe MK45 4DT, Beds, England

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 16期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.1797535

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tobacco mosaic virus (TMV) particles have been assembled at predetermined locations on the surface of a ferroelectric thin film with the composition PbZr0.3Ti0.7O3. The domain structure, hence the surface depolarization field for the ferroelectric associated with the bending of the ferroelectric band structure, was modified at length scales of around 2 mum. A suspension of TMV particles was deposited onto the surface of the ferroelectric over the region where domain modification had been performed. SPM images (intermittent contact) revealed that the virus particles were attracted to regions of the surface that had either been positively modified or were nominally neutral. Regions of modified negative surface charge effectively repelled the virus particles. (C) 2004 American Institute of Physics.

引用

页码：3537 / 3539

页数：3

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