Báo cáo hóa học: " Investigation of Semiconductor Quantum Dots for Waveguide Electroabsorption Modula" docx

... NANO EXPRESS Investigation of Semiconductor Quantum Dots for Waveguide Electroabsorption Modulator C. Y. Ngo Æ S. F. Yoon Æ W. K. Loke Æ Q. ... QDs are promising for EAM and the performance of QD-EAM will improve with increasing research efforts. Keywords InAs quantum dots Á Electroabsorption modulator Á Ridge waveguide structure Á Photocurrent ... (ER) for a giv...

Ngày tải lên: 22/06/2014, 01:20

... cleaning is performed at the end of sample preparation in order to get rid of remaining organic contamination. Introduction Quantum dots (QDs) are promising candidates for quantum information devices ... given by TEM analysis of a capped sam- ple. Figure 4 shows a TEM image of the profile of a defect hole, which was found on a pre-structured sam- ple. The different layers o...

Ngày tải lên: 21/06/2014, 05:20

... amount of BNKT and BST powders was weighed, ball-milled for 24 h, and dried using the oven-drying method. BNKT and BST powders were separately calcined for 2 h at 900°C for BNKT and 1,100°C for ... reduction of T c was observed in our system. At room temperature, ε r of pure BNKT was found to be 1,419. The addition of 10 mol% BST showed an optimum ε r of 1,609. As f...

Ngày tải lên: 20/06/2014, 23:20

... 6:413 http://www.nanoscalereslett.com/content/6/1/413 Page 6 of 9 NANO EXPRESS Open Access Investigation of utilization of nanosuspension formulation to enhance exposure of 1,3- dicyclohexylurea in rats: Preparation for PK/PD study via ... plasma profile needed for PK/PD investigation. Based on the model and in vivo data, a subcutaneous route of delivery of nanosuspension...

Ngày tải lên: 21/06/2014, 03:20

... concentrations of ferro-nanofluids were applied to the magnetic cores of transformers. The performance of transformers with magnetic cores of air Figure 6 The coupling coefficients of transformers with ... ferro-nanofluid was applied as a liquid magnetic core in a transformer. The performance of the transformer with t he ferro- nanofluids was measured, simulated, and compared with...

Ngày tải lên: 21/06/2014, 04:20

... details 1 Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, People’s Republic of China 2 Beijing Synchrotron ... quality of the cracks edge with that of healed part, the cross was etched for 2 min at 200°C in mixed solution of H 2 SO 4 : H 3 PO 3 (3:1). Only crack edges were etched fast...

Ngày tải lên: 21/06/2014, 06:20

... objective of this paper is twofold. First, we investigate the initial stages of nucleation, oxi- dation of Zn atoms, and growth of ZnO nanowires. Secondly, we investigate the formation of tapered ... the source of nano- wire growth instead of Zn atoms. The shape of the semiconductors at the nanoscale is another decisive factor for the proper ties, and the shape controlled gr...

Ngày tải lên: 21/06/2014, 08:20

... magnetocrystalline anisotropy of Ni is small, the main contribution stems from the shape of the deposited metal structures. In average, the deposited Ni-structures of the considered sample offer a diameter of about ... by the coating of the particles but also by the concentration of the solu- tion. Due to the low toxicity of magnetite as well as of mesoporous silicon, it is a...

Ngày tải lên: 22/06/2014, 00:20

... result of the release of Zn ions from the nanowires. The interface of coupled Si nanowires and neurons shows no clefts and is comprised of a SiO 2 layer of 4 nm and a PLL coating layer of 4 nm. Formation ... consisted of a multilayer of neuron/PLL/SiO 2 /nanowires. The high- resolution TEM image (Fig. 4f) also shows an interfa- cial layer with a thickness of about 8 nm consi...

Ngày tải lên: 22/06/2014, 00:20

... of the Combined Index of Severity of Fibromyalgia (ICAF) Comparison was made of the patients not on sick leave versus those temporarily or permanently off work. Com- parisons were also made of ... extensive evaluation of its usefulness as an index of the severity of fibromyalgia. Conclusions This exploratory study offers a tool allowing more com- plete and rapid evaluation of...

Ngày tải lên: 18/06/2014, 19:20