Selective growth of metal tips onto semiconductor quantum rods and tetrapods

被引：953

作者：

Mokari, T

Rothenberg, E

Popov, I

Costi, R

Banin, U ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Inst Chem, Farkas Ctr Light Induced Proc, IL-91904 Jerusalem, Israel

[2] Hebrew Univ Jerusalem, Ctr Nanosci & Nanotechnol, IL-91904 Jerusalem, Israel

来源：

SCIENCE | 2004年 / 304卷 / 5678期

关键词：

D O I：

10.1126/science.1097830

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We show the anisotropic selective growth of gold tips onto semiconductor (cadmium selenide) nanorods and tetrapods by a simple reaction. The size of the gold tips can be controlled by the concentration of the starting materials. The new nanostructures display modified optical properties caused by the strong coupling between the gold and semiconductor parts. The gold tips show increased conductivity as well as selective chemical affinity for forming self-assembled chains of rods. Such gold-tipped nanostructures provide natural contact points for self-assembly and for electrical devices and can solve the difficult problem of contacting colloidal nanorods and tetrapods to the external world.

引用

收藏

页码：1787 / 1790

页数：4

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