Exploring Rolled-up Au鈥揂g Bimetallic Microtubes for Surface-Enhanced Raman Scattering Sensor

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• 作者：Yin Yin ; Teng Qiu ; Libo Ma ; Xianzhong Lang ; Yan Zhang ; Gaoshan Huang ; Yongfeng Mei ; Oliver G. Schmidt
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：December 6, 2012
• 年：2012
• 卷：116
• 期：48
• 页码：25504-25508
• 全文大小：255K
• 年卷期：v.116,no.48(December 6, 2012)
• ISSN：1932-7455

文摘

A technique to design and fabricate Au鈥揂g bimetal microtubes for the investigation of curvature-dependent localized surface plasmon modes is demonstrated. Highly surface-enhanced Raman scattering (SERS) is observed that illustrates the distribution of localized surface plasmon modes leading to an enhanced electromagnetic field. A finite-difference time-domain method is also employed to simulate the electromagnetic field properties on the metal surface. The enhanced SERS performance of such noble bimetal microtubes could spur further interest in the integration of highly sensitive biosensors for rapid, nondestructive, and quantitative bioanalysis, particularly in microfluidics.