Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 48, Pages 25504-25508Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp308854t
Keywords
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Funding
- National Natural Science Foundation of China [51271057, 51071045]
- Program for New Century Excellent Talents in University of Ministry of Eduction of China [NCET-11-0096]
- Natural Science Foundation of Jiangsu Province, China [BK2012757]
- Key Laboratory of MEMS of Ministry of Education, Southeast University
- Shanghai Pujiang Program [11PJ1400900]
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A technique to design and fabricate Au-Ag 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 SEAS 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.
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