tailieunhanh - Báo cáo hóa học: " Profile Prediction and Fabrication of Wet-Etched Gold Nanostructures for Localized Surface Plasmon Resonance"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Profile Prediction and Fabrication of Wet-Etched Gold Nanostructures for Localized Surface Plasmon Resonance | Nanoscale Res Lett 2010 5 344-352 DOI S11671-009-9486-4 NANO EXPRESS Profile Prediction and Fabrication of Wet-Etched Gold Nanostructures for Localized Surface Plasmon Resonance Xiaodong Zhou Nan Zhang Christina Tan Received 7 October 2009 Accepted 29 October 2009 Published online 13 November 2009 to the authors 2009 Abstract Dispersed nanosphere lithography can be employed to fabricate gold nanostructures for localized surface plasmon resonance in which the gold film evaporated on the nanospheres is anisotropically dry etched to obtain gold nanostructures. This paper reports that by wet etching of the gold film various kinds of gold nanostructures can be fabricated in a cost-effective way. The shape of the nanostructures is predicted by profile simulation and the localized surface plasmon resonance spectrum is observed to be shifting its extinction peak with the etching time. Keywords Localized surface plasmon resonance LSPR Nanosphere lithography NSL Nanofabrication Plasmonics Nanoparticles Profile simulation Introduction Nanoparticles have revolutionized conventional sensing technologies by magnifying signals and introducing unprecedented functionalities such as cloaking image distortion correction surface-enhanced Raman spectroscopy SERS electrical conduction in nanocircuits cancer therapy with photothermal effects 1 etc. and these nanoparticles can be metallic 2-9 or bimetallic Electronic supplementary material The online version of this article doi s11671-009-9486-4 contains supplementary material which is available to authorized users. X. Zhou H N. Zhang C. Tan Institute of Materials Research and Engineering IMRE A STAR Agency for Science Technology and Research 3 Research Link Singapore 117602 Singapore e-mail donna-zhou@ nanoparticles 10 and nanowires 11 12 . Localized surface plasmon resonance LSPR 2-4 7-9 generated by the interaction between the incident light and conduction electrons in noble metal nanoparticles to .