physical thermal optical and electrical properties

... absorption (optical properties) [7], room-temperature quantised charging (electrical properties) [8], catalytic [9] and magnetic properties [10] Also interesting are the interparticle interactions and ... the superstructure properties In this thesis, a series of physicochemical studies on the collective optical and electrical properties of superstructures consisting of silver and gold nanoparticles ... also has an effect on the optical properties of the nanoparticle assemblies [2] Another sensor type is based on the enhancement of the signal due to electrical or optical properties of the nanoparticles,...

Ngày tải lên: 04/06/2014, 15:05

... stacks of TiO2 and ZrO2 films and that the interface layer is observed between the ZrO2 film and the Si substrate The physical thickness of ZrO2 and TiO2 thin films was measured to be 26 and 13 nm, ... 51072049), STD and ED of Hubei Province (Grant Nos 2009CDA035, 2008BAB010, 2010BFA016, and Z20091001) Author details State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical ... Pulsed laser deposition and analysis for structural and electrical properties of HfO2TiO2 composite films Jpn J Appl Phys 2004, 43:1571 13 Ramani K, Singh RK, Cracium V: Hf-O-N and HfO2 barrier layers...

Ngày tải lên: 20/06/2014, 21:20

... Metal and Materials Technology Center (MTEC), Nation Science and Technology Development Agency (NSTDA), Thailand Research Fund (TRF), and the National Research University Project under Thailand’s ... zirconate experiment and analysis and drafted the manuscript PJ participated as the assistant for the research experiment AW and SJ participated in the conception and design of the study and revised the ... al.: Crystal structure and electrical properties of bismuth sodium titanate zirconate ceramics Nanoscale Research Letters 2012 7:57 Author details Department of Physics and Materials Science,...

Ngày tải lên: 21/06/2014, 17:20

... sample preparation and details of our optical system can be found in a recent publication [18] Results and Discussion Figure shows the absorption spectra for the pure P3HT polymer and three of its ... summary, we have presented a combination of electrical and optical methods for studying the charge exchange at bulk P3HT–SWNT heterojunctions The optical methods show that at high SWNT concentrations ... solar cells and photodetectors require enhanced transport of separated carriers and limited electron-hole recombination Thus we need to a methodology that monitors charge transport and carrier...

Ngày tải lên: 22/06/2014, 00:20

... band, and h ( h ) for hole in valence band; they create (annihilate) the carrier with spin projection  for electrons and  for holes Considering negligible the piezoelectricity and the band-mixing ... Fabrication of Broadband Superluminescent Diodes S Haffouz and P.J Barrios Chapter Influence of Optical Phonons on Optical Transitions in Semiconductor Quantum Dots 29 Cheche Tiberius and Emil Barna ... Fingerprints in the Optical and Transport Properties of Quantum Dots 4.3 Height engineering of self-assembled InAs/GaAs QDs for wideband emission The indium-flush process is a very reproducible and predictable...

Ngày tải lên: 26/06/2014, 23:21

Ngày tải lên: 13/11/2014, 10:44

... MAGNETO-TRANSPORT, MAGNETO -OPTICAL AND DYNAMIC PROPERTIES OF FERROMAGNETIC NANOSTRUCTURES LIU XINMING (M.Eng, HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY) A THESIS SUBMITTED FOR ... Fong Leong and Ms Xiao Yun for the support during my candidature Thanks to all the friends for the pleasant time we have shared in ISML and in Singapore I would like to thank my parents and little ... fundamental research and their potential in a wide range of emerging applications In this thesis, a systematic investigation of magneto-transport, magneto -optical and dynamic properties of Co/Pd...

Ngày tải lên: 10/09/2015, 09:10

... electronic and electrical properties of the conducting polymers Hence, control of the HOMO-LUMO gap and specifically the design of low band gap polymers have gained importance in recent years The band ... (NEXAFS), and field-effect transistor (FET) characterisation, to systematically study the differences and similarities between the top and bottom interfaces of rrP3HT films prepared by sc, dc and ijp ... methodology and modeling based on a linearlygraded variation in the (n,k) optical properties through the film thickness to obtain two “limiting” (n,k) spectra that represent the local (hypothetical) optical...

Ngày tải lên: 11/09/2015, 10:15

... because of its unique optical and electrical properties In this work, features and working principles of conventional planar Si solar cell and novel SiNW solar cell have been studied and compared, highlighting ... 3.2 Optical properties Theoretical studies on the optical properties of SiNWs have been carried out by Hu and Chen [13] It was found that for a square array consisting for SiNWs with 50, 65 and ... 16 Table Summary of optical and electrical characterisation of buried junction Si planar, SiNWire and SiNWall solar cell 40 Table I-V characterisation of planar Si and core-shell SiNW...

Ngày tải lên: 12/10/2015, 17:35

... 11 2.3 OPTICAL PROPERTIES OF TCOS 2.3 Optical Properties of TCOs For transparent conductive oxides, the most widely investigated optical properties are transmission, reflection, band-gap, and refractive ... deposition The optical and mechanical properties of the films were investigated by the Z-scan technique and nanoindentation Upon laser bombardment, the film experienced optical annealing and film transmittance ... called “random laser” effect resulting from intense optical pulse excitation [29] 12 2.3 OPTICAL PROPERTIES OF TCOS This phenomenon is due to strong optical scattering of photons in a random active...

Ngày tải lên: 27/11/2015, 12:13

... O2p and Ti3d bands exists in the anatase polymorph too Even though, the electronic band structure for the anatase and the rutile structures are not that different their electrical transport, optical ... material with electrical conductivity lower than that of a metal (104 Scm-1) and higher than that of an insulator (10-10 Scm-1) In terms of the band structure and band gaps, a band semiconductor ... Hilgenkamp, T Venkatesan; Effect of Ta alloying on the optical, electronic and magnetic properties of TiO2 thin films xii LIST OF TABLES Table 1.1: Physical Properties of TiO2 phases……………………………………………………4...

Ngày tải lên: 09/09/2015, 18:49

... dependence on the thermal, physical and chemical properties of ultra-thin films of selected polymers In the first part of our study, we investigate the thermal and physical properties of hydrophilic ... polymer and is optically transparent It has excellent mechanical, electrical, thermal and biomedical properties and can be synthesized by CVD polymerization It has been used as an insulator for electrical ... a variety of thin film physical properties Examples are changes in mechanical properties such as tensile stress or hardness, electronic properties, as well as chemical and processing characteristics...

Ngày tải lên: 05/10/2015, 19:04

... on the physical properties of pulp [Tamolong 1967; Zamuco et al 1969] Aging of a bamboo culm influences physical, chemical, and mechanical properties, and consequently its processing and utilization ... information of bamboo and tallow …………………………………52 Table 4-2 Fiber size distribution of bamboo and tallow wood fibers ……………… …55 Table 4-3 Physical and mechanical properties of bamboo and tallow fiberboards ... alpha cellulose, and Klason lignin contents and the lowest extractive and ash contents The epidermis had the highest extractive and ash contents and the lowest holocellulose and alpha-cellulose...

Ngày tải lên: 22/02/2014, 09:20

... wafers by thermal evaporation technique at a base pressure of 3.0 Â 10À6 Torr The source SiO and the substrates were inserted in the tube and kept at locations at $1200 1C (center zone) and $1000 ... crystalline Si core and amorphous SiO2 outer shell structure as confirmed by HRTEM image and SAED pattern On the other hand, the formation of crystalline Si–SiO2 core-shell nanowires first and then complete ... position at 393 nm ($3.15 eV) The PL properties of silica nanowires have been investigated before showing single or two PL bands depending on their structural properties [5,7,24] For example, Yu...

Ngày tải lên: 16/03/2014, 15:18

... spectroscopic properties, which can be used to investigate ligand-dependent and pH-dependent structural properties [9,14–19] Heme binds to HSA in a D-shaped cavity limited by Tyr138 and Tyr161, ... time of the protein and shorter than their own relaxation time [36,37] There- tHSA contains the complete primary heme-binding site, and shows optical and magnetic spectroscopic properties comparable ... interface between domains I and III, and are stabilized by salt bridges with Arg114 and Lys190 residues [21,22] Interestingly, the heme site of HSA has a low affinity for long-chain and medium-chain fatty...

Ngày tải lên: 23/03/2014, 04:21

... levels in the band gap, which are localized and close to either the conduction or the valence band Since the energy difference between these levels and band edges is very small, a slight thermal excitation ... Structural, electrical and optical properties of ZnS films deposited by close-spaced evaporation Appl Surf Sci 2006, 253:2409 33 Demichelis F, Pirri CF, Tresso E: Degree of crystallinity and electrical ... Antibacterial Properties of Ag Nanoparticle Loaded Multilayers and Formation of Magnetically Directed Antibacterial Microparticles Langmuir 2005, 21:9651 23 Gupta K, Jana PC, Meikap AK: Optical and electrical...

Ngày tải lên: 21/06/2014, 02:20

... was 0.45 mm, and the thickness of the enamel layer was approximately 0.05 mm The primary and secondary windings had 20 turns The outer and inner diameters of the capillary were 3.2 and 2.3 mm, ... experimental investigations of electric and magnetic properties of ferro-nanofluids on transformers and prepared the draft, PH proposed the phenomena for investigation and revised the manuscript, DS suggested ... Brownian and Neel relaxation in magnetic fluids J Magn Magn Mater 1999, 201:102-104 doi:10.1186/1556-276X-6-264 Cite this article as: Tsai et al.: Investigation of electrical and magnetic properties...

Ngày tải lên: 21/06/2014, 04:20

... Contact (Rc) and sheet (Rsheet) resistances measured by CTLM 123 1766 Nanoscale Res Lett (2010) 5:1762–1767 and forming gas (Ar: H2) anneal on the cells’ electrical and photovoltaic properties ... the electrical properties (Fig 6) With increasing forming gas annealing temperature, there is a clear change in both dark and light I–V curves Information about the parasitic resistances (Rs and ... (250, 300 and 350°C) The duration of each annealing step was 20 Dark and illuminated (1-sun) I–V data were measured before and after each annealing step The dark currents in Figs 5b and 6a are...

Ngày tải lên: 21/06/2014, 07:20

... Ultrasonication effects on thermal and rheological properties of carbon nanotube suspensions Binglu Ruan*1,2 and Anthony M Jacobi1 Mechanical Science and Engineering, University of Illinois, ... improvement of thermal equipment and systems as: air-conditioning and refrigeration, transportation, electronic cooling, heating and ventilating, etc Researchers have found many ways to enhance the thermal ... obtained The standard image processing methods included pixelization, threshold definition, binary conversion, and geometry analysis -3- Thermal conductivity and viscosity measurements Thermal conductivity,...

Ngày tải lên: 21/06/2014, 17:20

... A1 and E1 modes, corresponding to optical phonons, will split into a longitudinal -optical (LO) and a transverse -optical (TO) component due to the macroscopic electrical field associated with the ... sets of optical phonon modes near the zone center The modes are classified into Raman allowed (A1 ? E1 ? 2E2), infrared allowed (A1 ? E1), and both Raman and infrared silent (2B1) The A1 and E1 ... industrial production and applications of ZnO Nanowires Conclusions In conclusion, the physical and electrical properties of vapor–solid grown hexagonal ZnO straight nanowires were investigated The...

Ngày tải lên: 22/06/2014, 01:20