Electrical thermal energy transfer and energy conversion in semiconductor nanowires

... society problem in the 21st century Thermoelectric phenomena involve the conversion between the thermal energy and electrical energy and provide a method for heating and cooling materials Thermoelectric ... the thermal conductivity decreases rapidly with increasing doping, and 10% doping can yield 50% reduction of the value of thermal conductivity; while in the high...

Ngày tải lên: 10/09/2015, 08:24

... Refrigeration – need for insulation, Carbon Dioxide & Ammonia Primary Refrigerants (G Harrap) Past Papers in Brewing Journals (G Harrap) Past Papers in Brewing Journals (G Harrap) Past Papers in Brewing ... Supersonic vapour flow and condensation shockwave, • Generated from the injection of high velocity steam • Steam is introduced into a special annular "conditioning" chamb...

Ngày tải lên: 08/03/2014, 23:20

... rib arrangements on heat transfer and flow behavior in a rectangular rib roughened passage” International Journal of Heat and mass transfer; 123: 675-681, 2001 [6] Lau S.C., McMillin R.D and Han ... studies of augmented heat transfer and friction in asymmetrically heated rectangular ducts with ribs on the heated wall in transverse, inclined, V-continu...

Ngày tải lên: 05/09/2013, 16:10

... a major fine paper machine rebuilding project in Finland is evaluated and, finally, in the fourth study the use of the concept in a paper production unit start-up in China is reviewed In Chapter ... concept in knowledge transfer and competence development in an investment project in China (2002 – 2006) The research included analysis of the knowledge transfe...

Ngày tải lên: 18/03/2014, 02:20

... conventional straight fin and cylindrical oblique fin minichannel heat sink 84 Figure 4-10 Pressure drop for conventional straight fin and cylindrical oblique- finned minichannel heat sink ... straight fin minichannel and cylindrical oblique fin minichannel 56 Figure 3-10 local heat flux profile between conventional straight fin minichannel an...

Ngày tải lên: 09/09/2015, 11:26

... linear (Ohmic) behavior of the current response in the polymer thin film, resulting in electrical conductivity switching behavior and memory effect in the sandwich structure The individual memory ... insulator, bistable electrical conductivity switching (WORM memory and flash memory effects) , and conductor behaviors, when the CNT content in the composit...

Ngày tải lên: 11/09/2015, 09:59

... nanowires have pointed out such increased photocurrent in vacuum [7-11] In this work, we investigated photoconductivity of ZnO single nanowires in air and vacuum, and we found that the photoconductivity ... surface oxygen can be totally desorbed, totally eliminating the contribution of the adsorbed oxygen to the depletion and band bending Indeed, in vacuum, we observe...

Ngày tải lên: 21/06/2014, 03:20

... properties of the InGaN quantum structures, including InGaN/ GaN quantum wells and InGaN quantum dots 1. 3 InGaN/ GaN quantum wells and quantum dots InGaN is an important alloy for fabricating III-nitride ... Electron mobility μ (cm2 V -1 s -1) Thermal conductivity χ (W K -1 cm -1) 9.0 4.0 9.7 3.0 12 .8 0.4 11 .8 0.25 3.0 2.0 2.0 1. 0 13 50 800 6000 13 00 1...

Ngày tải lên: 14/09/2015, 14:02

... second) is used, and there are 25 6 or 5 12 samples in each scanning Here, one sample represents one line of scanning, which then consists of 25 6 or 5 12 sampling points 2. 3.4 Scanning electron microscopy ... excition transition and bound exciton transition Eb is the free exciton binding energy and Ebx is the bound exciton binding energy In addition to the radiative transitio...

Ngày tải lên: 14/09/2015, 14:02

... Section 3. 3 will be dedicated to the study on the effects of V-pits on the morphological and optical properties of InGaN/ GaN quantum wells Finally, in Section 3. 4, the InGaN/ GaN quantum dot saturable ... this study will only be focused on the saturable absorbers and SESAMs operating in the blue region In this chapter, Section 3. 1 will be focused on...

Ngày tải lên: 14/09/2015, 14:02

... coating After the separate study and calibration, the DBR and AR coatings were finally incorporated with the InGaN/ GaN 8-QW saturable absorber presented in 148 Chapter Design & Fabrication of GaN- based ... the GaN- based monolithic DBRs as shown in Fig 4. 1 [Ponce2003; Moustakas2001; Waldrip2001; Yao20 04; Lin20 04] In addition, in Fig 4. 10, the oscillation fringes...

Ngày tải lên: 14/09/2015, 14:02

... fabricated by the InGaN/ GaN 8-QW saturable absorber, as discussed in Chapter 5. 1 Simulation First of all, the origin of the interference fringes within the stopband of the GaN- based SESAM was investigated ... Furthermore, after thinning the GaN buffer, the period of the interference-induced oscillation fringes was increased and there was only one interference minimum falling...

Ngày tải lên: 14/09/2015, 14:02

... quantum wells and quantum dots, operating in the blue wavelength region were investigated For InGaN/ GaN quantum well saturable absorbers, a novel and convenient method to reduce the absorption ... and contributed to different PL emission bands For quantum dot saturable absorbers, in this work, a 3-layer InGaN quantum dot sample was fabricated and its nonlinear...

Ngày tải lên: 14/09/2015, 14:02

... Fellow of the Engineering Institute of Canada, the Canadian Academy of Engineering, the Canadian Society for Mechanical Engineering, the American Society of Mechanical Engineers and the International ... energy conversion system in Canada involving large-scale integrated hydrogen production using solid fuels International Journal of Hydrogen Energy 201...

Ngày tải lên: 05/09/2013, 14:58

... Professor at Missouri University of Science and Technology She received her B.S in Industrial Engineering from North Carolina State University, Master of Engineering in Mechanical Engineering and ... beginning point for the integrated process map Table Goals of energy versus environmental management systems Goals of Energy Management System Optimize energy efficiency...

Ngày tải lên: 05/09/2013, 15:28