Nanotechnology Research Center, Department of Electrical and Electronics Engineering, Bilkent University, 06800 Bilkent, Turkey.
Small. 2013 Feb 25;9(4):531-7. doi: 10.1002/smll.201201286. Epub 2012 Oct 12.
A highly tunable design for obtaining double resonance substrates to be used in surface-enhanced Raman spectroscopy is proposed. Tandem truncated nanocones composed of Au-SiO(2)-Au layers are designed, simulated and fabricated to obtain resonances at laser excitation and Stokes frequencies. Surface-enhanced Raman scattering experiments are conducted to compare the enhancements obtained from double resonance substrates to those obtained from single resonance gold truncated nanocones. The best enhancement factor obtained using the new design is 3.86 × 10(7). The resultant tandem structures are named after "Fairy Chimneys" rock formation in Cappadocia, Turkey.
提出了一种用于获得用于表面增强拉曼光谱的双共振基底的高可调设计。设计、模拟和制造了由 Au-SiO2-Au 层组成的串联截断纳米锥，以获得在激光激发和斯托克斯频率处的共振。进行了表面增强拉曼散射实验，以比较从双共振基底获得的增强与从单共振金截断纳米锥获得的增强。使用新设计获得的最佳增强因子为 3.86×10(7)。所得的串联结构以土耳其卡帕多西亚的“仙女烟囱”岩层命名。
