SURFACE-ENHANCED RAMAN

grated in an electrochemical cell [10–12]. Then, themetal support may serve as an electron supply or sinkfor electron transfer reactions to or from an immobi-lized redox protein. In addition, variation of the elec-trode potential is also one parameter that can alter thelocal electric field strength e[r]

1988, 19:503.40. Kelly KL, Coronado E, Zhao LL, Schatz GC: The optical properties of metalnanoparticles: the influence of size, shape, and dielectric environment.J Phys Chem B 2002, 107:668.41. Schaefers S, Rast L, Stanishevsky A: Electroless silver plating on spin-coated silver nanoparticle seed la[r]

intense in Raman– However, the water can absorb the scattered Raman light and will damp the spectrum, and lower its sensitivity Raman has several problems:– Susceptible to fluorescence, choice of laser important– When used to analyze samples at temperatures greater than 250C,[r]

21. Okamoto K, Vyawahare S, Scherer A: Surface-plasmon enhanced brightemission from CdSe quantum-dot nanocrystals. J Opt Soc Am B 2006,23:1674.22. Yeh DM, Huang CF, Chen CY, Lu YC, Yang CC: Surface plasmon couplingeffect in an InaGaN/GaN single-quantum-well light-emitting diode.[r]

typically two resonance peaks corresponding to plasmon oscillations along the short and long axis (Murphy, San et al. 2005). As the aspect ratio, defined as the length-to-width ratio, is increased, the LSPR associated to the long axis is red-shift from visible to near infrared region. The same effec[r]

ann= 400–550°C andduration of 15–20 min. Atomic force microscopy studyrevealed the relatively dense and homogenous array of60–80-nm high pyramidal nanoislands, formed at suchannealing conditions, to be most efficient for SERS of bothorganic dye and inorganic nanoparticles analyte. Thenoticeable enhan[r]

thiết lập trên cơ sở của hiện tợng phân tán Raman, một hiệu ứng phi tuyến trong truyền dẫn sợi quang giúp truyền tải năng lợng từ các bớc sóng bơm, đi trên quảng đờng ngắn hơn vào các bớc sóng đi trên quảng đờng dài hơn.. Card DRA cung cấp công suất bơm bớc sóng ngắn hơn cho khuếch đại Ram[r]

3nanoparticles are synthesized. All of the procedures arecarried at room temperature.The samp les are characterized at room temperature byX-ray diffraction (XRD) on a Philips Diffractometer (model:X’Pert-Pro MPD; Philips, Eindhoven, The Netherland)using CuKa radiation (40 kV, 30 mA). The microstruct[r]

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“Hiệu ứng nhiệt trong laser Raman phát sóng đối Stokes” sẽ trình bày phân bố năng lợng bơm, phân bố nồng độ tâm hoạt bị kích thích, phân bố nhiệt và chiết suất trong hoạt chất Raman của [r]

nanodevices fabrication [30,31,32]. Further work on optimizationof the synthesis conditions such as heating rate and duration tocontrol the aspect ratio of the nanowires is underway.Please cite this article in press as: O. Lupan, et al., Mater. Sci. Eng. B (2009), doi:10.1016/j.mseb.2008.12.035ARTIC[r]

khác nhauPhổ độ khuếch đại rộng và tương đối bằng phẳng  Khuếch đại Raman đa bơm:Nguồn nhiễu trong bộ khuếch đại Raman Nhiễu tán xạ Rayleigh kép DRS:Nhiễu do thời gian sống của electron tại trạng thái kích thích ngắn Nhiễu phát xạ tự phát ASE Nhiễu do bước sóng ánh sáng bơm và án[r]

TRANG 1 KKKK KKKKHHHHHHHHƯƯƯƯƯƯƯƯÛÛÛÛÛÛÛÛ MMMMMMMMAAAAAAAAËËËËËËËËTTTTTTTT KKKKKKKKHHHHHHHHUUUUUUUUAAAAAAAAÁÁÁÁÁÁÁÁTTTTTTTT HHHH HHHHIIIIIIIIDDDDDDDDDDDDDDDDEEEEEEEENNNNNNNN SSSSSSSSUUUU[r]

2 plasma. The dependence of tungsten oxide film structure on experiment conditions was investigated by X-ray diffraction (XRD) Raman spectroscopy. In this paper, we considered that the thickness of ITO layers about 150nm to 350nm clearly effects on the Raman and XRD spectrograms of WO3[r]

There should be amorphous Si covering the SiNW.But there is no signal of amorphous Si in theRaman spectra. The possible explanation is thatthe Raman peak of the amorphous Si is about490 cmÀ1and the FWHM of the sample is 20 cmÀ1,so the peak may be covered by the TO peak.4. ConclusionArray-orde[r]