Integration of indium gallium nitride with nanostructures on silicon substrates for potential photovoltaic applications

... INTEGRATION OF INDIUM GALLIUM NITRIDE WITH NANOSTRUCTURES ON SILICON SUBSTRATES FOR POTENTIAL PHOTOVOLTAIC APPLICATIONS HO JIAN WEI (B.Eng.(1st Hons), NUS) A THESIS SUBMITTED FOR THE DEGREE OF ... Current Status of Photovoltaics (PV) for Solar Energy Harvesting 1.2 Motivation for Integration of InGaN with Nanostructures on Si in PV 1.2.1 Advantages of InGaN for PV Applications 1.2.2 ... profile (cross-section) with duration of O2 RIE for different initial residual layer thickness 91 Figure 4.4 Evolution of S-FIL imprinted profile (plan view) with duration of O2 RIE for...

Báo cáo khoa học: Nigrocin-2 peptides from Chinese Odorrana frogs – integration of UPLC/MS/MS with molecular cloning in amphibian skin peptidome analysis pot

... Alignment of amino acid residues in (A) nigrocin-2- related peptides from O schmackeri skin, (B) nigrocin-2- related peptides from O grahami skin, and (C,D) identical nigrocin-2- related peptides from ... feature of nigrocin-2 peptides is reminiscent of the glycine ⁄ leucine-rich dermaseptin orthologues from the skins of neotropical phyllomedusine leaf frogs, named plasticins [30] Nigrocin-2 peptides ... archetypal nigrocin-2 from Pelophylax nigromaculatus was re-named nigrocin-2N In common with the nigrocin-2- related peptides isolated from the skin of Odorrana grahami [24], these Odorrana nigrocin-2...

STUDYING THE EFFECTIVENESS OF ANIMATION AND GRAPHICS WITH TEXT ON FOURTH, FIFTH AND SIXTH GRADERS potx

... PROBLEM The primary purpose of this study is to explore the effectiveness of animations and graphics with text on students’ learning Therefore, the study examined whether the animations -with- text ... self explanatory with the aid of animations and text as compared with static graphics and text The animations with text create a cross referential connection between verbal and visual codes Studies ... explanation answers, number each stage of the life cycle, and fill in the blank The instrument compared the effectiveness of animations -with- text and graphics- with- text on learning by measuring the...

Báo cáo hóa học: " Hybrid FIB milling strategy for the fabrication of plasmonic nanostructures on semiconductor substrates" potx

... nanostructures because of the reduction of the semiconductor surface damage This FIB- milling process extends the ability of the technology to fabricate plasmonic and other nanostructures on substrates ... highresolution capabilities of the ion-beam-based techniques Reducing the amorphisation of the substrate results in over sevenfold increase of the optical transmission of semiconductor/ metal nanostructures ... altered the geometry of the apertures, since the transmission spectra are very sensitive to the shape of the apertures The most prominent difference in the transmission of the structures is the significantly...

Báo cáo hóa học: " Solvability of boundary value problems with Riemann-Stieltjes Δ-integral conditions for second-order dynamic equations on time scales at resonance" pptx

... Solvability of boundary value problems with Riemann-Stieltjes Δ-integral conditions for second-order dynamic equations on time scales at resonance Advances in Difference Equations 2011 2011:42 Submit ... existence of solutions for boundary value problems with integral boundary conditions on time scales Motivated by the statements above, in this paper, we are concerned with the following boundary value ... theory on time scales, we can illustrate that boundary value problems with integral boundary conditions on time scales also cover two-point, three-point, , n-point boundary problems as the nonlocal...

Báo cáo hóa học: " Photoluminescence Study of Low Thermal Budget III–V Nanostructures on Silicon by Droplet Epitaxy" pdf

... nanostructures realized on silicon using a low thermal budget procedure suitable for IC integration Acknowledgements This work was supported by the CARIPLO foundation under the project QUADIS2 (Contract no ... saturation of non–radiative recombination channels in the barrier active during carrier diffusion processes [27] In conclusion, we presented the PL behavior of highefﬁciency GaAs/AlGaAs quantum nanostructures ... protrusion at the inner ring edge acts, in fact, as three-dimensional electronic carrier conﬁnement potential, thus being like a ring laid down on top of quantum disk), thus offering additional...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_1 pot

... are the turned, bored and milled dimensions Machinability and Surface Integrity ‘full’ production operational machining, meaning that with some degree of confidence, manufacturing dictates and ... in these doubtful situations, rather than ‘working blindly’ – with no relevant cutting data, to base the applied cutting conditions upon Several of these ‘ranking’ non -machining tests can be employed, ... useful in actual industrial machining applications, where a more representative machinability situation was demanded Just some of these testpieces, along with a discussion of their relative merits,...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_2 docx

... present in a data set into ‘components’ Each ‘component’ is attributed to an identifiable cause, or source of variation; in addition, one ‘component’ represents the variation due to uncontrolled ... meaningful machinability assessment 7.2 Machined Roundness Roundness is a condition of a surface of revolution’ , which can take the form of a: cylinder, cone, or sphere, where all the peripheral data ... speed was raised by >2.5 times the optimum of 200 m min–1, with all facing operations being conducted at a ‘constant surface speed’12 of 550 m min–1 Typical tool-life curves produce by the AWT technique...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_4 pot

... magnitude of the output of a system with respect to that of the input – the conditions of operation and measurements must be specified’ (Smith, 1993, et al.) of increasing the frictional contact ... tooling with the greatest possible diameter with the minimum of tool overhang By way of a caution concerning chatter frequency, this normally occurs near the most flexible vibrational mode of the machining ... shape and its corresponding ‘Y’ direction The orientation of the modulation direction ‘Y’ toward a dynamically more-rigid direction angle, allows a decrease in vibrational response, giving greater...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_5 pdf

... 160. Surface texture comprises of: ‘long-’, ‘medium-’ and ‘short-components’, together with the ‘direction of the dominant pattern’ – superimposed upon each other [Courtesy of Taylor Hobson] Machinability ... rotational speed (Vr) oscillation speed (Vo), the length and position of the honing stroke, the honing stick pressure (Vc) The inclination angle of the cross-honing action, is a product of the ... typical production processes However, some caution should be taken when utilising these values for control of the surface condition, because they can misrepresent the actual state of the surface topography,...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_7 ppt

... NB This rate of heat generation only exists within the primary and secondary deformation zones By way of example of how the temperature generation/distribution occurs in orthogonal cutting, ... ‘regression line’ being the equivalent of the ‘least squares line’ , allows data on each axes to be compared – with some degree of confidence.(Wild, et al.,1995) Machinability and Surface Integrity ...  If by changing the range of the ‘beta-function’ equation above, from: 0→1 to Rp + Rv, or indeed with that of Rt, then substituting σ (i.e the standard deviation of the distribution) with Rq,...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_8 doc

... deformation – occurs when high pressures (i.e compression) are exerted on the cutting edge in combination with elevated temperatures Conditions likely to create plastic deformation on the cutting ... only the surface is ‘skimmed’ by a longitudinal turning operation • Notch wear on insert’s trailing edge – occurs by in the main, by adhesion wear, but to a lesser extent, may be the result of ... the initiation of a cut, the variations in the magnitude of the cutting force and its direction, may not be too great for both the toughness and strength of the cutting insert With continual usage...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_9 docx

... in conjunction with the application of efficient cutting conditions The following simple formula can be utilised to calculate the ROI for a particular: production operation; machine tool; machining ... and Surface Integrity as a result, offer extremely fast process response, in comparison to those of the of the ‘non-rigid type’ – having long measurement paths (i.e found in conventional strain-gauged ... disk’s surfaces, these being suitably ‘hard-wired’ to their appropriate and corresponding plug connectors As shear forces can only be transferred by frictional contact, a certain minimum of friction...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_10 ppt

... component, FC = cutting force component, FN = normal force component on the shear plane, FS = shear force component on shear plane, R = resultant tool force component, N = normal force component ... ‘frictional laws’ with the observation that: ‘The coefficient of friction* is substantially independent of the speed of sliding.’ *Coefficient of friction (µ) = F/N Thus, the friction force is ... tips of these ‘welded junctions’ Hence, the total frictional force ‘Ff’ is given by: Ff = τf Ar (ii) Where: τf = Shear strength of softer contacting material, Ar = Real contact area From equations...

Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_11 pot

... taper-section overcomes the limitation of perpendicular sectioning By taking an Machinability and Surface Integrity 363 Figure 186. The effects of residual stress and deformations of a workpiece by machining ... component The concept of the overall functional performance of a surface and its accompanying sub -surface condition was recognised by Field and Kahles (1971), where they used the term Surface Integrity ... 7.10 Surface Integrity of Machined Components – Introduction fects when discussing the machined surface condition in the following section Previously in Section 7.5 concerning machined surface...

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