کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5362332 | 1388283 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Near field properties of nanoparticle arrays fabricated by laser annealing of thin Au and Ag films
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Near field properties of nanoparticle arrays fabricated by laser annealing of thin Au and Ag films Near field properties of nanoparticle arrays fabricated by laser annealing of thin Au and Ag films](/preview/png/5362332.png)
چکیده انگلیسی
In this work we show the properties of the electromagnetic field in the vicinity of a monolayer nanoparticle array on SiO2 substrate. The nanoparticle array is produced by a simple experimental procedure, where thin gold and silver films are deposited on a substrate by pulsed laser deposition technique and they are annealed by nanosecond laser pulses. At certain conditions the laser annealing leads to a homogeneous decomposition of the film into nanoparticles with diameters in the range of few tens of nanometers. Using FDTD simulations the near field distribution in array structures taken from SEM images are obtained. The distribution shows presence on “hot spots” where the near field intensity is enhanced more than two orders of magnitude compared to the incident one. The existence of enhanced field intensity is assumed to be the main reason on enhancement of the Raman scattering signal obtained experimentally using the produced structures as active substrates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 257, Issue 3, 15 November 2010, Pages 1075-1079
Journal: Applied Surface Science - Volume 257, Issue 3, 15 November 2010, Pages 1075-1079
نویسندگان
S. Imamova, N. Nedyalkov, A. Dikovska, P. Atanasov, M. Sawczak, R. Jendrzejewski, G. ÅliwiÅski, M. Obara,