Fabrication of low loss silicon waveguides by ion irradiation and electrochemical etching

... characterization Chapter focuses on the procedure of fabrication of silicon- on-oxidized porous silicon waveguides Fabrication of silicon- on-oxidized porous silicon waveguides using our ion irradiation and ... motivation of our work is to investigate different schemes to fabricate different kinds of low loss silicon waveguides and c-bend waveguides u...

Ngày tải lên: 09/09/2015, 11:21

... composite target, a SiO2 (99.99%) plate partially covered by polycrystalline chips of Si and Ge, and a second target of pure SiO2 The surface ratio of the Si and Ge pieces in the SiO2 target was 2:1 ... narrow because of the self-ordering growth The annealing of those films caused the formation of crystalline Ge clusters with larger sizes Furthermore, the regular spatial...

Ngày tải lên: 21/06/2014, 04:20

... ultraviolet (EUV) and the soft X- ray (SXR) parts of the electromagnetic spectrum This thesis describes a novel approach for the fabrication of these zone plates using ion beam lithography (IBL) by focused ... nitride, calcium and iron Values from [Henke et al., 1993] Extreme Ultraviolet and Soft X- Ray Radiation 2.2 X- ray Sources Most modern soft X-...

Ngày tải lên: 25/11/2015, 15:14

... framework of the effective mass approximation [17–20], allowing us to attribute Peak to the emission of the localized states within the CTQRs On the other hand, on the basis of the same theoretical ... that of the original droplets, confirming that all Ga droplets transformed into GaAs triple rings at the end of the procedure As already discussed in Ref [1...

Ngày tải lên: 21/06/2014, 08:20

... Stabilization of mid-sized silicon nanoparticles by functionalization with acrylic acid Robert Bywalez*1, Hatice Karacuban2, Hermann Nienhaus2,3, Christof Schulz1,3, and Hartmut ... that functionalization of mid-sized silicon nanoparticles is challenging While the functionalization with alkenes, as also established in our group, yields stable dispersions from s...

Ngày tải lên: 21/06/2014, 17:20

... preparation of densely packed AlN nanowires based on a new strategy In this strategy, the porous anodic alumina film on aluminum is etched into the alumina nanowires, and then the alumina nanowires ... FE-SEM images of densely packed alumina nanowires produced by chemical etching of the porous alumina film in diluted NaOH solution: a lowmagni...

Ngày tải lên: 21/06/2014, 20:20

... accomplished in aluminium matrix composite reinforced with silica sand Fabrication of Low Cost of Aluminium Matrix Composite 52 pores pores Figure 3: SEM micrograph of (a) Al-40 vol % commercial silica ... in aluminium composite Aluminium matrix composite reinforced with silica sand showed a slightly higher hardness and modulus of fracture comp...

Ngày tải lên: 07/08/2014, 14:20

... study of outcomes of persistent low -back pain in chiropractic patients J Manipulative Physiol Ther 2005, 28:9 0-9 6 Croft PR, Macfarlane GJ, Papageorgiou AC, Thomas E, Silman AJ: Outcome of low back ... with low back pain? A systematic, critical literature review Scand J Public Health 2000, 28:23 0-2 39 Leboeuf-Yde C: Body weight and low back pain A systemat...

Ngày tải lên: 13/08/2014, 14:20

... 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

... In these authors’ opinions, such studies obviously represent the next logical step in the unfolding story of the modulation of the oligomeric structures of HIV-1 viral enzymes by synthetic peptides ... 75% of the total Gibbs energy [15] The importance of this four-stranded b sheet is further emphasized by the fact that all PR dimerization inhibitors d...

Ngày tải lên: 08/03/2014, 09:20

... expression of CLU or b-actin (E) Cytoplasmic (C) and nuclear (N) extracts isolated from confluent monolayers of HaCaT Neo and HaCaT c-fos cells and total proteins isolated from HaCaT cells and HaCaT cells ... period of days (C) Confluent monolayers of HaCaT Neo and HaCaT c-fos cells were cultured for 24, 48 and 72 h in the presence of serum, and...

Ngày tải lên: 16/03/2014, 02:20

... City, CA, USA) Isolation of anti-Cn2 scFv by panning of phage- antibody repertories The library of human scFv was displayed on filamentous phage and used for the selection of antibodies against ... GGCGGATCAGGAGGCGGAGGTTCTGGTGGAGGTGGGAGTAATTTTATGCTGACTCAGCCCCA CCACCAGAACCTCCGCCTCCTGATCCGCCACCTCCTGAGGAGACGGTGACCAGGGTGCC CCACCAGAACCTCCGCCTCCTGATCCGCCACCTCCTGAAGAGACGGTG...

Ngày tải lên: 23/03/2014, 13:20

... vacuum conditions but without plasma in order to detect possible changes caused by evacuation only and not by plasma 59 Vuloševi et al: BACTERICIDAL EFFECTS OF LOW- TEMPERATURE OXYGEN PLASMA ON ... stearothermophilus and Staphylococcus aureus, respectively, are displayed 67 Vuloševi et al: BACTERICIDAL EFFECTS OF LOW- TEMPERATURE OXYGEN PLASMA ON Fig...

Ngày tải lên: 18/05/2014, 20:29

... examine the involvement of Vps4A and Vps4B in the egress of HTLV-1 Gag- induced VLP, we analyzed the effects of overexpression of DN mutants of Vps4A and Vps4B, termed Vps4AEQ and Vps4BEQ, respectively ... mechanism of HTLV-1 budding in detail, we analyzed HTLV-1 budding using DN forms of the class E proteins Vps4A, Vps4B, and AIP1 (Fig 1) The results in...

Ngày tải lên: 18/06/2014, 18:20

... Test-retest reliability of the Dutch version of the Dizziness Handicap Inventory B-ENT 2006, 2:75-80 Asmundson GJG, Stein MB, Ireland D: A factor analytic study of the dizziness handicap inventory: does ... 75% of the 'improved' and 77% of the 'unchanged' participants Discussion In this cross-sectional and longitudinal study of patients with dizziness...

Ngày tải lên: 18/06/2014, 19:20