Design and fabrication of III v semiconductor nanostructures by molecular beam epitaxy

... 1.6 Motivation and objective of the thesis The goal of this thesis is to design and fabricate 3D nanostructures, QDs and QRs on III- V compound semiconductors The fabrication of the 3D nanostructures ... windows of lowest attenuation, viz 0.85 µm, 1.3 µm and 1.55 µm III- V semiconductor lasers using InGaAsP as an active Figure 1.3: Plot of bandgap against latt...

Ngày tải lên: 30/09/2015, 06:04

... applications of QDs Quantum dots fabrication Fig Schematic diagram of the density of states (DOS) in the conduction band (CB) and valence band (VB) for a (a) double heterostructure, (b) quantum well, ... to grow InAs islands on GaAs and it has been shown that the size fluctuation of dots is relatively small (£10%) and the small dots and surrounding host matrix are disloca...

Ngày tải lên: 22/06/2014, 22:20

... growth of the {111} Page of sidewalls, giving rise to a typical rhombohedral crosssection (Figure 6c) In summary, by combining SEM and TEM analysis of group IV semiconductor NWs grown by MBE ... analysis of the surface energy of diamond cubic crystals Surf Interface Anal 2003, 35:805 doi:10.1186/1556-276X-6-113 Cite this article as: Xu et al.: Synthesis of long grou...

Ngày tải lên: 21/06/2014, 05:20

... growth of the {111} Page of sidewalls, giving rise to a typical rhombohedral crosssection (Figure 6c) In summary, by combining SEM and TEM analysis of group IV semiconductor NWs grown by MBE ... analysis of the surface energy of diamond cubic crystals Surf Interface Anal 2003, 35:805 doi:10.1186/1556-276X-6-113 Cite this article as: Xu et al.: Synthesis of long grou...

Ngày tải lên: 21/06/2014, 07:20

... Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions Ya Wang1, Zhiming Liao1, Hongyi Xu1, ... JZ: j.zou@uq.edu.au Abstract GeMn/Ge epitaxial superlattices grown by molecular beam epitaxy with different growth conditions have been systematically investigated by transmission electron microscopy...

Ngày tải lên: 18/06/2014, 22:20

... a direct localization of buried nanostructures even at cap layer thickness as large as 100 nm Different experiments, based on the nucleation of new nanostructures at the top surface of 25- and ... situation when 1.6 ML of InAs is deposited on the surface With this amount of InAs, besides the QD formed at the top of the mounds, we observe QD decorating the sidewalls of th...

Ngày tải lên: 22/06/2014, 00:20

... Thanh, Nguyen Anh Tuan, Bach Gia Duong, Research, Design And Fabrication Of The 45W And The 200W, L-Band Power Amplifier Using The Modern Microstrip Technology For Application In The National ... have also investigated the S11 factor of the power divider Wilkinson on network analyzer, the result was relatively similar to that of the simulink model Afterthat we have measu...

Ngày tải lên: 22/03/2014, 11:20

Ngày tải lên: 08/05/2014, 12:50

... Vietnam, information transceiver system working VHF bands have a lot of important applications Therefore, the study of information transceiver systems in the band VHF to understand the structure, the ... buildings can be a problem in urban areas 1.3 Thesis objectives and structure In this thesis,I will clarify the roles and the need of a information...

Ngày tải lên: 27/05/2014, 20:57

... 19 Holland L: Vacuum Deposition of Thin Films Wiley, New York; 1956 doi:10.1007/s11671-010-9744-5 Cite this article as: Zhang et al.: Design and Fabrication of Fiber-Optic Nanoprobes for Optical ... nanoprobe fabrication A thin film of an optically opaque metal such as aluminum, silver, or gold is coated along the outside walls of the tapered optical fiber tip to for...

Ngày tải lên: 21/06/2014, 08:20

... abundance of various-shaped gold nanostructures Figure exemplifies that the profile of the nanostructure after gold evaporation is different for conformal and non-conformal gold nanostructures, as well ... angles of h = 60°, 60°, 60° and u = 0°, 120°, 240° to the nanosphere kinds of gold depositions are simulated for wet etching: a–d are for 3D conformal gold de...

Ngày tải lên: 22/06/2014, 00:20

... DESIGN AND FABRICATION OF MICRONEEDLES FOR DRUG DELIVERY JI JING ( B.Eng.,M.Eng., NWPU, CHINA) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF MECHANICAL ... Many of fabricated microneedles are designed for transdermal therapies to deliver drugs such as insulin and heparin On the other hand, microneedles can also be used for local d...

Ngày tải lên: 14/09/2015, 11:17

... DESIGN AND FABRICATION OF SUPERJUNCTION POWER MOSFET DEVICES CHEN YU (M.Eng., Xi’an Jiaotong University, P.R.China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... structures of Polysilicon Flanked superjunction, Oxide-bypassed (OB) superjunction and Graded oxide by-passed (GOB) superjunction were designed to overcome the fabrication...

Ngày tải lên: 14/09/2015, 14:12

... percentages and results of the assay 3-4 Chapter Design of Bead- based Microfluidic Device CHAPTER 4 DESIGN OF BEAD- BASED MICROFLUIDIC DEVICE 4.1 Introduction A microfluidic device offers numerous ... Applications of microfluidic devices and focus of research in this thesis 2) Advantages of microfluidic devices and aim to improve multiplexing capab...

Ngày tải lên: 30/09/2015, 06:04