The morphology and evolution of bipyramidal gold nanoparticles

被引：18

作者：

Geitner, N. K. ^{[1
]}

Doepke, A. ^{[2
]}

Fickenscher, M. A. ^{[3
]}

Yarrison-Rice, J. M. ^{[1
]}

Heineman, W. R. ^{[2
]}

Jackson, H. E. ^{[3
]}

Smith, L. M. ^{[3
]}

机构：

[1] Miami Univ, Dept Phys, Oxford, OH 45056 USA

[2] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA

[3] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

来源：

NANOTECHNOLOGY | 2011年 / 22卷 / 27期

关键词：

ASCORBIC-ACID; NANORODS; GROWTH;

D O I：

10.1088/0957-4484/22/27/275607

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We examine the growth and evolution with time of bipyramidal gold nanoparticles grown by a seed-mediated process. The nanoparticles are characterized both by their physical dimensions determined by transmission electron microscopy and by the wavelength position of their localized surface plasmon resonance. Each growth's physical dimensions correspond to particular initial conditions, and we observe two distinct modes of temporal evolution during growth. The effects of varying silver nitrate concentration and growth time are also explored. We observe a linear relationship between the tip radius of curvature and the wavelength of the longitudinal localized surface plasmon resonance (LSPR) peak. Critical parameters for synthesizing bipyramidal nanoparticles with sharp tips and correct length to width ratio are determined.

引用

页数：8

共 16 条

[1] Quantitative Measurements of Individual Gold Nanoparticle Scattering Cross Sections [J].