کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1495468 992936 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface mode induced extinction of potassium titanate nanoplatelets
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Surface mode induced extinction of potassium titanate nanoplatelets
چکیده انگلیسی

Extinction spectra of aqueous dispersions of potassium titanate nanoplatelets obtained with and without different surfactants were analyzed in the near UV region. The existence of two closely spaced extinction peaks was interpreted in terms of excitation of low order surface modes in small disk-like particles near the zeros of the real part of the dielectric function of the particle material. One oscillator model for the dielectric function in combination with the theory of extinction of randomly oriented small disks provided evaluation of the peak height ratio, which reasonably agrees with the experimental data.


► Extinction spectra of titanate nanoplatelets were studied in near UV region.
► The extinction peaks are related to excitation of electronic surface modes.
► One oscillator Lorentz model was used to interpret the extinction features.
► The ratio of the extinction peak heights agrees with theoretical predictions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 34, Issue 11, September 2012, Pages 1865–1868
نویسندگان
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