collective optical properties of particles self assembled in multilayers

... Tunneling Coefficient 4.3 Potential Profile at the Interface of Alkanethiol SAM 60 64 4.3.1 Potential Profile of Bare Electrode 4.3.2 Potential Profile of the Interface in the Presence of Inert ... measurements of kinetic properties of redox molecules at electrodes coated with thin insulating films retain much of the information available at bare electrodes but with greatly diminished diffusion ... immersion of an appropriate substrate into a solution of an active surfactant in an organic solvent [1, 2] In nature, self- assembly results in supermolecular hierarchical organizations of interlocking...

Ngày tải lên: 30/09/2015, 06:36

... fabrication of a novel type of very uniform, strain-free GaAs QDs by filling of LDE nanoholes in AlGaAs with GaAs, has been demonstrated [21] In the present paper we describe the in uence of the LDE ... filling level was explained quantitatively with a model in which the part of the GaAs flux impinging on the area of the nanohole opening migrates downwards and fills up the hole starting from its bottom ... distribution Optical Properties of LDE QDs Macro-photoluminescence (PL) measurements of QD ensembles were performed at T = 3.5 K and micro-PL measurements of single QDs at T = K Using macro-PL,...

Ngày tải lên: 22/06/2014, 00:20

... PL intensity of the ground state transition of the single QD is shown in the inset of Fig The integrated intensity remains almost constant up to 100 K and shows an exponential quenching at higher ... transitions involving holes in the excited states [20], which leads to the reduction of the photon antibunching from the X line In the presence of a background the value of the g(2)(0) is increased ... are in good agreement B with the g(2)(0) values In summary, we have studied the temperature dependence of the luminescence of single unstrained self- assembled GaAs quantum dot (QD) structures Single...

Ngày tải lên: 22/06/2014, 22:20

... is that MCPIP regulates the amount of IL-1b mRNA Involvement of PIN domain of MCPIP in the stability of IL-1b mRNA In order to find out whether the PIN domain in MCPIP is responsible for IL-1b ... the MCPIP gene The coding sequence lacking the PIN domain was obtained in two steps First, the fragment of 423 bp situated in front of the PIN domain was amplified by PCR using forward primer 5¢CGGGATCCCGGAGTCTGAGCTATGAGTG-3¢ ... proteins interacting with MCPIP will clarify the dynamics and features of this protein Role of MCPIP in regulation of the endogenous IL-1b transcript level After identification of a PIN domain in the...

Ngày tải lên: 18/02/2014, 14:20

... benzylamine (Fig 5A) in comparison to the inhibition observed with tryptamine (Fig 5B) suggests differences in binding of the two substrates within the active site of the enzyme and ⁄ or indicates ... limiting in steady-state turnover Our studies of the pH dependence of TTQ reduction by benzylamine have indicated that a single kinetically in uential ionization of pKa 6.0 controls the rate of ... benzylamine) was followed at 456 nm on rapid mixing of enzyme with substrate The plot of observed rate constant against benzylamine concentration for recombinant AADH is shown in Fig 3B Fitting of...

Ngày tải lên: 19/02/2014, 07:20

... (72h) In these XRD patterns, we also see that two weak peaks indexed as (110) and (200) diffractions of 24h sample are not clear and the intensity of these peaks increases in accordance with aging ... TEM image of PS-2 along the mesopore channels in Fig 3d appears some black spots which are likely to originate from bigger platinum particles or clusters of ultra-small plantinum nanoparticles ... content of platinum increase to 3% in weight Figure EDX diagram of PS-1 d N2 adsorption-desorption method Figure Transmission electron micrographs of Pt/SBA-15(PS-1) in the direction of pore...

Ngày tải lên: 05/03/2014, 11:21

... systematic analysis of the effect of the B and P codoping in Si-nw, concentrating not only on the structural properties but also on how doping in uences the electronic and optical properties Here, ... peak Multidoping In this section, we will study how the FE and the electronic properties of the Si-nc are in uenced by the insertion of more and more impurities We call this insertion of several ... nanocrystals size, since the FE for similar impurity configurations are quite independent of the nanocrystal dimension 2.2.2 Electronic properties Concerning the electronic properties, in the single-doped...

Ngày tải lên: 16/03/2014, 15:15

... decreasing the thickness of the a-Si : H layer This results in termination of dangling bonds of the surface Si atoms of nanocrystalline silicon Nanocrystalline silicon thus fabricated is embedded in ... Raman spectra of (a) nanocrystalline Si prepared by pulsed plasma processing and (b) porous silicon prepared by anodic etching using 488 nm line of Ar+ laser Optical properties of nano-silicon ... of the dot under linear mapping d = Na (Å) only to get a proper scaling of our data points We find the gap energy increases as the size of the dot decreases, which confirms the stronger confinement...

Ngày tải lên: 16/03/2014, 15:31

... predicted in simple EMA models Optical properties of SiNWs and GeNWs In Section of the present paper, we aim to point out the importance of the many-body effects on the optical response of some of the ... character of the conduction band minima (CBM) in the two cases These CBM are obtained through the folding of the bulk energy bands on the wires axis; whereas in Si the CBM retain mainly the original indirect ... explained in terms of the different geometrical structure of wires grown with different orientation Finally the comparison of the optical spectra of SiNWs and GeNWs with diameters of the order of...

Ngày tải lên: 16/03/2014, 15:33

... Magneto -optical properties of magnetic multilayers 2.2.1 Magneto -optical properties of Co/Pd systems 2.2.2 Magneto -optical properties of Co/Pt multilayers 2.2.3 Magneto -optical properties of Co/Cu multilayers ... occupied d bands in the later case Also of interest is how the spin-orbit interaction of the nonmagnetic metal (increasing along the series of Cu, Pd, Pt, and Au) in uences the MO response of the MLS ... whereby all properties of the ground state of an interacting electron gas may be described by introducing certain functionals of the electron density ρ(r) The standard Hamiltonian of the system...

Ngày tải lên: 17/03/2014, 14:51

... COMMUNICATIONS Comparing the intensities of the (010) and (014) peaks of the sample with those of the bulk W18O49, it was found that the relative intensity of (010) has been dramatically increased (from ... and the intensity of this peak increases relative to that of UV emission as the length of nanorods increases A similar PL pattern with two emission maxima, yet at much lower energies of 2.8 and ... nm in length (aspect ratio ≈ 10) were obtained at the reaction temperature of 250 °C (Figure 3a).19 Longer nanorods of 130 ( 30 nm in length (aspect ratio ≈ 20) were prepared at 270 °C by using...

Ngày tải lên: 20/03/2014, 13:08

Ngày tải lên: 22/03/2014, 11:20

... most important processes (intraband and interband) involved in studies of electronic properties of solids If we think of the optical properties for various classes of materials, it is clear from ... consist of a spatial and a spin part The effect of the spin-orbit interaction is to introduce a partial lifting of the degeneracy of band states at high symmetry points in the Brillouin zone Also, ... bands of Ge: (a) without and (b) with spin–orbit interaction The listing above gives the Γ point splittings The spin-orbit splittings are k-dependent and at the L-point are typically about 2/3 of...

Ngày tải lên: 24/04/2014, 17:13

... quality of the BFO thin film for further optical measurement and analysis Page of SE measurements were taken to investigate the optical properties of the BFO film Considering the optical investigation ... functions of optical constants and layer or film thickness, were fitted to the corresponding optical model depicted in the inset of Figure By varying the parameters of the models in the fitting procedure, ... Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China 2State Key Laboratory of ASIC...

Ngày tải lên: 06/05/2014, 09:01

... surface with nanoparticles led to increasing of special surface area and consequently increasing the light scattering The presence of nanoparticles on the surface of pigment caused increase surface ... the scattering properties of ice particles [33] The higher surface roughness of nanoparticle-decorated ZnO led to multiple scattering and increasing of the reflectance Presence of nanoparticles ... than scale-like ZnO The scattering of light by small particles is determined not only by the composition of the incident light and the optical properties of the particles and the medium but also...

Ngày tải lên: 06/05/2014, 13:23

... pattern in Fig 2e further depicts that the sample is single crystalline, which is in agreement with analysis results of Fig 2d For analyzing the photoelectric properties of the sea urchin-like ... well-crystallized particles of prepared ZnO Fig 1b shows the UV–visible optical absorption characteristics of the sea urchin-like ZnO Excitonic absorption peak of the ZnO sample is at about 360 nm in the ... characteristics of the sea urchin-like ZnO nanostructures based DSSCs grateful to the aid provided by the Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province...

Ngày tải lên: 06/05/2014, 13:23

Ngày tải lên: 13/05/2014, 09:07

... Inset: ratio between the wavelength of light and the SPP one Additionally, the main figure in b depicts with solid line the SPP skin-depth in air Inset: SPP skin-depth into the metal Dashed lines ... who were involved in those projects that were the seed and the feed of this thesis It is a long list of collaborators working in the groups of Prof T.W Ebbesen, Prof S.I Bozhevolnyi, Prof D Bäuerle, ... study of optical properties of metal coated microspheres), the optical properties of metamaterials made with stacked hole arrays and the guiding of metallic waveguides (and their focusing capabilities...

Ngày tải lên: 29/05/2014, 18:40

... Gaussian fittings of the histograms The increase of particle size on increasing the Ag content in the bimetallic nanoparticles can be explained by considering the reduction velocity of the individual ... the extinction (absorption + diffusion) of a part of incident light resulting a coloring effect in these systems The absorption and dispersion of light in nanoparticles depend on the nature of the ... formation of well crystalline multiple twined nanoparticles for both the samples In fact most of the bimetallic nanoparticles formed in our bimetallic systems were multiple twined The lattice spacings...

Ngày tải lên: 04/06/2014, 15:20

... nine years This educational programme was originally designed by us with two goals in mind: experiencing being part of a health care team (the spirit of interprofessional work), and learning interprofessional ... formation Group works: Planning of the clinical training whole days Clinical training outside the University Group works: Preparation of reports and Presentations Debriefing meeting: Presentations and ... facilities through games The design of the training agenda and planning of the clinical training were developed through several group consultations Clinical training was then implemented outside...

Ngày tải lên: 18/06/2014, 17:20