مشخصات پژوهش

عنوان	Optical properties of left-handed metamaterial involving coated nano-spheres
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	Metamaterial  Left-handed  Negative refraction index  Extended Maxwell-Garnett theory
چکیده	We present theoretical results of a left-handed metamaterial engineered by a combination of coated and solid nano-spheres. The structure is a binary composite of CdS– TiO2 core–shell and Au solid nano-spheres which simultaneously dispersed in the air matrix. The effective medium parameters derived by extended Maxwell-Garnett (EMG) effective medium theory. It is shown the possibility of fine-tuning the metamaterial in order to observe left-handed behavior. The results are supplemented with transmittance curves, calculated by layer-multiple-scattering (LMS) method. The predictions of the EMG theory are in good agreement with those of LMS method; thus the (CdS–TiO2)/Au nanocomposite is an appropriate choice as a three-dimensional left-handed metamaterial.
پژوهشگران	آیرین رنجگر (نفر سوم)، سید عبدالعلی ذوالانواری (بازنشسته) (نفر دوم)، حسین صادقی (نفر اول)