Surface plasmon resonances of free-standing gold nanowires fabricated by nanoskiving.
Surface plasmon resonances of free-standing gold nanowires fabricated by nanoskiving.
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DOI：
10.1002/anie.200600394
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发表时间：
2006-05
影响因子：
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通讯作者：
Qiaobing Xu;J. Bao;F. Capasso;G. Whitesides
中科院分区：
文献类型：
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作者：
Qiaobing Xu;J. Bao;F. Capasso;G. Whitesides
在这里，我们提出了一个简单的，实验上方便的方法，用于制造具有均匀，可控尺寸的金纳米线（图1），和这些金纳米线的等离子体共振对这些线的几何形状的依赖性的系统研究。线的长度由光刻法确定;宽度由通过气相沉积制造的膜的厚度确定;高度由用切片机的金刚石刀切片（“纳米切削”）确定。导线的横截面可以小到10 nm！30纳米。我们测量个别金线的表面等离子体共振，并显示这些共振是由它们的横截面尺寸。贵金属（Ag或Au）的纳米颗粒由于其表面等离子体共振而显示出不同的颜色。这些粒子通过其传导电子的集体振荡的共振激发与可见光强烈相互作用。由于这些振荡，
Herein we present both a simple, experimentally convenient method for the fabrication of gold nanowires with uniform, controlled dimensions (Figure 1), and a systematic study of the dependence of the plasmon resonance of these gold nanowires on the geometry of these wires. The length of the wires is determined by photolithography; the width is determined by the thickness of a film fabricated by deposition from the vapor; the height is determined by sectioning (“nanoskiving”) with the diamond knife of a microtome. The cross sections of the wires can be as small as 10 nm! 30 nm. We measure the surface plasmon resonances of individual gold wires, and show these resonances to be determined by their cross-sectional dimensions. Nanoparticles of noble metals (Ag or Au) show different colors as a result of their surface plasmon resonances. These particles interact strongly with visible light through the resonant excitation of the collective oscillations of their conduction electrons. As a result of these oscillations, local