double layers optical properties and electrochemistry

... spectra and the process of energy transfer from the PVP to the Mn2+ luminescent centers in doped ZnS as well as the optical band gap variation are also discussed 123 The optical properties and energy ... experimental and theoretical studies of the luminescence, non-linear optical and electrical properties of a variety of polymers have been performed (Jarzabek et al 2006, 2008) directed towards understanding ... nanoparticles and contribute to increasing optical properties of material The absorption edge and right shoulder of PVP (in Fig 4) showed in range from 230 to 400 nm, while the absorption edges and right

Ngày tải lên: 16/12/2017, 09:10

... amide I band at 1693 cm1, an NH bending band at 1575 cm1 and a CH2 bending band at 1575 cm1in the amide II band and an amide III NH bending band and a CAO stretching band at 1268 cm1and 1096 ... band gap is 5.217 eV The values of the direct band gaps Edand the indirect band gaps Einfor the gelatine gels are shown inTable 3 Along the absorption coefficient curve and near the optical band ... microorganisms, plants, and animals and is a constituent of enzymes and proteins, excessive Ni affects the photosynthetic functions of higher plants, causes acute and chronic diseases in humans and reduces

Ngày tải lên: 13/01/2020, 05:16

... important optical and photothermal properties of gold nanoparticles in different shapes and structures and address their recent applications for cancer imaging, spectro-scopic detection and photothermal ... (Fig 3A), the SPR band is split into two bands: a strong band in NIR region corresponding to electron oscillations along the long axis, referred to longitudinal band, and a weak band in the visible ... analyze the effects of the size and geometry on the SPR absorption, scattering and total extinction El-Sayed and co-workers adopted DDA and stud-ied the optical properties of gold nanorods in

Ngày tải lên: 14/01/2020, 18:28

... the valence π and conduction π ∗ energy bands symmetrically located with respect to the Fermi energy,optical transitions E pp  from the p-th valence band to the p -th conduction band occur in ... sample and the other is a thin film.Chen et al made SWNT solu-tions by cutting and grinding the nanotube sample [41],and they successfullymeasured the optical absorption spectra of undoped and of ... nanotube structureand of the calculated electronic and phonon energy bands with their specialDensity of States (DOS) The structure of a SWNT is specified by the chiral vector Ch where a1 and a2 are unit

Ngày tải lên: 07/09/2020, 14:39

... k g o v t r / c h e m / Research Article Synthesis, properties, and electrochemistry of a photochromic compound based on dithienylethene and ProDOT Melek PAMUK ALGI1, Atilla C˙IHANER2, ∗, Fatih ... smart materials (e.g., molecular switches, optical data processing and storage devices, molecular probes, machines, and imaging agents) in both bio- and nanotechnological sciences as well as in ... in solution and in the solid (film) state (Figure 2) It was also noted that the open isomer (1o) of compound 1 is highly fluorescent and gives a broad emission band between 350 nm and 500 nm (

Ngày tải lên: 12/01/2022, 23:29

... temperature AlN buffer layer and GaN growth By introducing double AlN buffer layers, we substantially improve the crystal and optical qualities of semi-polar (11–22) GaN, and significantly reduce ... Photoluminescence and optical reflectance investigation of semipolar and nonpolar GaN Phys Status Solidi B 244, 1853–1856 (2007). 25 Ueda, M et al Epitaxial growth and optical properties of semipolar ... off-axis (10–10) (20–20) and (30–30) peaks decreased by approximately 32%, 46% and 86% from 0.78°, 0.58° and 0.51° to 0.53°, 0.31° and 0.1°, respectively On the other hand, as shown in Fig. 4(c),

Ngày tải lên: 19/11/2022, 11:48

... trapped in lipid bilayers: Size distribution, bilayer phase behavior, and optical properties Geoffrey D Bothun Address: Department of Chemical Engineering, University of Rhode Island, Kingston, ... of the excitation and emission polarizers, and G = I HV /I HH accounts for the sensitivity of the instrument towards vertically and horizontally polarized light [11]. Optical properties: Ultraviolet-visible ... hydrated with PBS, incubated for 1 hour, and sonicated for 2 hours. Portions of each sample were stored at 25°C (gel phase bilayers) and 50°C (fluid phase bilayers) for 15 days with- out agitation.

Ngày tải lên: 11/08/2014, 00:22

... the ERPs Trang 141.2 PROPERTIES OF THE VISUAL SYSTEM IN PRIMATE AND HUMAN BRAIN Understanding the visual system‘s structure and function is vital to understanding how, when and where in the brain ... outline its pros and cons, and discuss areas of concern and point out potential improvements in collecting and analysing EEG data Subsequently, I will present the theoretical and empirical developments ... human brain Sensitivity to image properties, the influence of aging, optical factors and individual differences PhD thesis http://theses.gla.ac.uk/5161/ Copyright and moral rights for this thesis

Ngày tải lên: 22/12/2014, 20:09

... the band structure, surface properties and electronic properties For the application in solar cell, many dopants have to be incorporated in to the TiO2 to reduce the band gap TiO2 has a band gap ... indirect band gap with the VBM at Δ (0, 0, 0.44) between Γ and X (0, 0, 0.5) and the CBM at Γ (Figure 1.2(b)) The indirect band gap from is shown 3.62 eV by GW The Brookite structure has a direct band ... band gap with GW is 3.86 eV which is larger than that of anatase (3.57 eV) and rutile (3.30 eV) Figure 1 2:Band structure and the corresponding DOS of (a) rutile, (b) anatase, (c) brookite, and

Ngày tải lên: 08/09/2015, 15:20

... Trang 1FAR-FIELD AND NEAR-FIELD OPTICAL PROPERTIES OF PLANAR PLASMONIC OLIGOMERS MOHSEN RAHMANI NATIONAL UNIVERSITY OF SINGAPORE 2012 Trang 2FAR-FIELD AND NEAR-FIELD OPTICAL PROPERTIES OF PLANAR ... curve) and the two subgroups (blue and red curves) (c) Sketch of decomposing a pentamer into Groups I and II (d) Electric field intensity distribution in the pentamer at peaks 1 and 2 and in ... high order modes excitation and make the oligomers unique devices for bio-sensing and other potential applications [2] On the other hand, while far-field optical properties of oligomers are polarization

Ngày tải lên: 09/09/2015, 10:06

... MAGNETIC AND OPTICAL PROPERTIES OF ATOMICALLY CONTROLLED COMPLEX OXIDE HETEROSTRUCTURES AND INTERFACES XIAO WANG NATIONAL UNIVERSITY OF SINGAPORE 2012 I ELECTRONIC, MAGNETIC AND OPTICAL PROPERTIES ... 70–92 ps from conduction band to intraband defect level were observed. The results are discussed on the basis of the proposed defect-band diagram. 7.1.2 Electrical Properties of LAO/STO Interface ... could help on understanding LAO/STO interface and even some basic fundamental issues in complex oxides and their interfaces. 7.2 Future Research Atomically flat interfaces and heterostructures,

Ngày tải lên: 09/09/2015, 10:07

... 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 should have a forbidden band gap of less 4 eV between its CBM and VBM ... L2,3 edges and (b) O K edge of the pure TiO2and Ti1-xTaxO2 (x~0.06) films grown at 600 and 750°C where µ + and µ - are parallel and parallel alignments between the photon helicity and the sample ... conduction band (CB), the lowest band is mainly composed of Ti3d having a width of 5.9 eV The octahedral coordination causes a crystal field splitting of the Ti3dbands into two sub-bands: eg and t2g

Ngày tải lên: 09/09/2015, 18:49

... compositions To further tailor the materials optical properties, nanomaterials with variable composition are synthesized and studied Tunable optical properties have been achieved in core/shell ... Among many important physical properties, optical properties of nanomaterials have always been given special attention The unique absorption and emission properties of nanomaterials ... increasing particle size, the plasmon absorption band shifts to the red and has larger bandwidth.21 Such... energy and a red-shifted emission band As the size of the materials decreases, the

Ngày tải lên: 11/09/2015, 09:11

... important optical properties of both theatmosphere and the ocean The optical properties from the ocean can be used to relate to waterquality parameters such as turbidity The optical properties ... Comparing TAFKAA and Cloud and shadow derived reflectance, reflectance map and scatter plot at 500 nm 101 4.25 Comparing TAFKAA and Cloud and shadow derived reflectance, reflectance map and scatterplot ... Comparing TAFKAA and Cloud and shadow derived reflectance, reflectance map and scatterplot (600 nm) 103 4.27 Comparing TAFKAA and Cloud and shadow derived reflectance, reflectance map and scatterplot

Ngày tải lên: 11/09/2015, 16:05

... structure and magnetic properties of FePt films with different thicknesses of Ag top layers and different deposition conditions Table 5-II Layer structure and magnetic properties ... Ag, Ru and Pt were deposited as the intermediate layer between FePt magnetic layers to enhance the coercivity in FePt perpendicular media. Comparing with Ru and Pt layers, Ag is the best candidate ... UNDERLAYER, INTERMEDIATE, AND TOP LAYERS 6.1 Experiment methodology 79 IV 6.2 Results and discussion 80 6.2.1 Crystallographic properties 80 6.2.2 Magnetic properties 82 6.2.3 Magnetic

Ngày tải lên: 13/09/2015, 21:23

... Heterostructured Sandwiched 3.1 Synthesis and characterization of the CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched nanorods ……… 34 3.2 Optical properties of the CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched ... Deposition of Au on the CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched nanorods ……….……… 41 3.4 Optical properties of the Au-deposited CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched nanorods ……… 46 3.5 Summary ... valance band and CB represents conduction band Type of core/shell nanoparticle Metal-metal heterostructured nanocrystals had been associated with changes in catalytic, optical and magnetic properties

Ngày tải lên: 03/10/2015, 21:57

... various bases B With respect to HC1 and HBr peculiar properties are observed for HI, tied on the one hand to the low value of its dipole moment and, on the other hand, to its lower stability, which ... provides 10 K-450 K temperature range and can be used in any orientation Refrigeration is achieved as compressed helium gas is expanded in the Displex expander, the expander being supplied with the helium ... expander and return to the first (expander) compressor unit A split stream, which supplies the Joule-Thomson circuit, is successively cooled by the two external heat stations of the Displex expander

Ngày tải lên: 05/07/2016, 10:40

... 6000–7200 g mol −1 Their optical properties in solutions and in solid state films were investigated using the UV−visible absorption and photoluminescence techniques, and were compared with those ... because of their compact structures and high segment densities These features affect the crystalline, mechanical and electrical properties and give rise to interesting properties such as suppressed ... (TPA), triphenylbenzene (TPB) and their derivatives have been widely investigated as core units resulting in star-shaped conjugated polymers with good optical properties and p-type charge transport

Ngày tải lên: 17/12/2017, 15:33

... SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY INTITUTE OF PHYSICS -*** - DO THI HUE SYNTHESIS AND OPTICAL PROPERTIES OF GOLD NANOSTRUCTURES SPHERICAL, ROD AND CORE/SHELL ... scattering and absorbing of light by the surface plasmon The optical properties of metallic nanostructures are explained by the theory of Mie and Gans 1.1.2 The Mie theory - the dependence of optical properties ... exigency and the ability to response those exigencies of the gold nanostructures, as well as from the research situation in the world and in Viet Nam, we chose and study the topic: “Synthesis and optical

Ngày tải lên: 09/01/2020, 15:38

... OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY INTITUTE OF PHYSICS *** DO THI HUE SYNTHESIS AND OPTICAL PROPERTIES OF GOLD NANOSTRUCTURES SPHERICAL, ROD AND CORE/SHELL ... scattering and absorbing of light by the surface plasmon The optical properties of metallic nanostructures are explained by the theory of Mie and Gans 1.1.2 The Mie theory - the dependence of optical properties ... exigency and the ability to response those exigencies of the gold nanostructures, as well as from the research situation in the world and in Viet Nam, we chose and study the topic: “Synthesis and optical

Ngày tải lên: 15/01/2020, 10:38