نتایج جستجو برای: carbon nanocone

تعداد نتایج: 281346  

Journal: :Nano letters 2016
Alexander J Giles Siyuan Dai Orest J Glembocki Andrey V Kretinin Zhiyuan Sun Chase T Ellis Joseph G Tischler Takashi Taniguchi Kenji Watanabe Michael M Fogler Kostya S Novoselov Dimitri N Basov Joshua D Caldwell

We use scanning near-field optical microscopy to study the response of hexagonal boron nitride nanocones at infrared frequencies, where this material behaves as a hyperbolic medium. The obtained images are dominated by a series of "hot" rings that occur on the sloped sidewalls of the nanocones. The ring positions depend on the incident laser frequency and the nanocone shape. Both dependences ar...

2013
Mehedhi Hasan Md Fazlul Huq Zahid Hasan Mahmood

Electronic and optical properties of Silicon Nanowire (SiNW) obtained from theoretical studies and experimental approaches have been reviewed. The diameter dependency of bandgap and effective mass of SiNW for various terminations have been presented. Optical absorption of SiNW and nanocone has been compared for different angle of incidences. SiNW shows greater absorption with large range of wav...

2013
Xiao Z. Fan Ekaterina Pomerantseva Markus Gnerlich Adam Brown Konstantinos Gerasopoulos Matthew McCarthy James Culver Reza Ghodssi

Related Articles Recent search for new superhard materials: Go nano! J. Vac. Sci. Technol. A 31, 050822 (2013) Advances in silicon carbide science and technology at the microand nanoscales J. Vac. Sci. Technol. A 31, 050805 (2013) Three dimensional reciprocal space measurement by x-ray diffraction using linear and area detectors: Applications to texture and defects determination in oriented thi...

Journal: :Nature communications 2013
Sangmoo Jeong Michael D McGehee Yi Cui

Thinner Si solar cells with higher efficiency can make a Si photovoltaic system a cost-effective energy solution, and nanostructuring has been suggested as a promising method to make thin Si an effective absorber. However, thin Si solar cells with nanostructures are not efficient because of severe Auger recombination and increased surface area, normally yielding <50% EQE with short-wavelength l...

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