منابع مشابه
Ge islanding growth on nitridized Si and the effect of Sb surfactant
The growth modes of Ge islands on SiNx -covered Si with and without a surfactant Sb layer are studied by scanning tunnelling microscopy. It is observed that on SiNx /Si(111), Sb cannot enhance the coverage of (111) facets of Ge islands, which are the dominant features in the late stage of Ge overlayer growth when Sb is not used. However, on SiNx /Si(001), Sb favours the growth of Ge(001) facets...
متن کاملOPTICAL STUDIES OF COLORED CHEMICAL SPECIES
Evanescent wave spectroscopy using thin optically transparent electrodes and multiple reflections allows unique observations of the electrochemical interphase since the region of solution sampled is typically 100 nm from the electrode in the visible spectral region. This technique is found to be highly sensitive to the presence of absorbing adsorbed species
متن کاملInvestigation of optical and magnetic properties of UY2(Y=Ga,Ge) compositions
In this study, the optical and magnetic properties of compounds in hexagonal and orthorhombic phases are investigated. The calculations have been carried out in the framework of the functional density theory with various approximations such as local density approximation, Generalized gradient approximation with the pseudopotential and stationary load method, and using the quantum-espresso compu...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولStructural studies on Te-rich Ge-Te melts
The structure of liquid Ge15Te85, Ge25Te75 and Ge33Te67 alloys has been studied by neutronand X-ray diffraction. Datasets obtained by the two techniques have been modelled simultaneously with the reverse Monte Carlo simulation method. As a result, the first coordination numbers and nearest neighbour distances for the studied alloys were estimated. On the base of the experimental data, Ge-Ge bon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 1997
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.118169