Far field and near field optical properties of planar plasmonic oligomers

... FAR- FIELD AND NEAR -FIELD OPTICAL PROPERTIES OF PLANAR PLASMONIC OLIGOMERS MOHSEN RAHMANI A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL AND COMPUTER ... properties of oligomers: Energy localization 90 5.1 Near -field localization 5.2 Influence of geometry on the near -field energy 5.3 Influence of defects on the...

Ngày tải lên: 09/09/2015, 10:06

... consisted of the a-Fe2O3 Fig The I–V characteristics of (a) the ITO /a-Fe2O3 film /a-Fe2O3 NW/ CAFM-tip structure and (b) the ITO /a-Fe2O3 film /CAFM-tip structure Fig The CAFM images of (a) morphology and ... 108 NWs/cm2 123 332 Fig (a) TEM image of an a-Fe2O3 NW, (b) HR-TEM image of the a-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3 NW (inset) for sample C,...

Ngày tải lên: 20/03/2014, 13:08

... that the emission area in this high field region not changed, and the stability of field emission is high The slopes and intercedes of these plots in the high field region are the same, showing the ... AlQ3 Conclusions In conclusion, the field emission properties for Ag-TCNQ nanostructured array were dependent on the structure and morphology determined by th...

Ngày tải lên: 21/06/2014, 17:20

... variety of nanostructured carbon films ranging from diamond [24], carbon nanosheets [25] CNTs [20, 23], and carbon nanobells [26, 27] to monochiral MWNTs [28] on Si substrates This technique offers ... treatment of Fe film on such substrates These particles probably seeded the nucleation and growth of CNTs Surface morphology of CNT films deposited on such substrates i...

Ngày tải lên: 22/06/2014, 01:20

... consisted of the a-Fe2O3 Fig The I–V characteristics of (a) the ITO /a-Fe2O3 film /a-Fe2O3 NW/ CAFM-tip structure and (b) the ITO /a-Fe2O3 film /CAFM-tip structure Fig The CAFM images of (a) morphology and ... 108 NWs/cm2 123 332 Fig (a) TEM image of an a-Fe2O3 NW, (b) HR-TEM image of the a-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3 NW (inset) for sample C,...

Ngày tải lên: 22/06/2014, 01:20

... layer porous carbon paper which consists of a macroporous layer of carbon fiber paper (SGL, Germany) and a microporous layer of carbon black powder and a hydrophobic agent The carbon black powder ... enhances an intimate electronic contact between the CNTs and the macroporous carbon paper The graphitized carbon paper was prepared by deposition of a mixture of carbo...

Ngày tải lên: 22/06/2014, 18:20

... asymptotically the value of the band-gap of the undoped Si-nw This is another indication of how doping can modify the electronic and optical properties of the Si nanostructures Conclusions 3.2 3.4 ... 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 i...

Ngày tải lên: 16/03/2014, 15:15

... 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 studied nanowires ... [41] Optical gaps in SiNWs and GeNWs: quantum confinement and anisotropy effects In this section, we will describe the electronic properties of hydrogen passivated, free...

Ngày tải lên: 16/03/2014, 15:33

... arc-lamp, excitation at 275 nm) of the three tungsten oxide nanorod samples of various lengths dissolved in dichloromethane Figure Photoluminescence spectra of tungsten oxide nanorods; 25 ( nm (short), ... micrographs of (a) ( 0.5 nm × 25 ( nm and (b) ( 1.5 nm × 130 ( 30 nm tungsten oxide nanorods Little is known about the photoluminescence of nanostructured tungst...

Ngày tải lên: 20/03/2014, 13:08

Ngày tải lên: 22/03/2014, 11:20

... morphology effects of ZnO pigments on their optical properties The synthesis conditions were according to our previous works [18,19] Typical synthesis conditions of ZnO powders synthesized in this ... concentration of zinc nitrate and potassium hydroxide solutions (Molar) Experimental 2.1 Preparation of pigments ZnO samples were prepared by hydrothermal method and us...

Ngày tải lên: 06/05/2014, 13:23

... and SAED pattern of the sea urchin-like ZnO nanostructures are presented in Fig Fig 2a and b displays the low magnification and high magnification SEM images of the sea urchin-like ZnO nanostructures, ... pattern (a) and UV–visible optical absorption characteristics (b) of the sea urchin-like ZnO nanostructures Fig SEM images (a,b), TEM image (c), HRTEM image (...

Ngày tải lên: 06/05/2014, 13:23

Ngày tải lên: 13/05/2014, 09:07

... Biosynthesis of Bimetallic Au-Ag Alloy Nanoparticles”, Small, Vol 1, pp 517-520, 2005 [25 P Raveendran, J Fu, and S L Wallen, “A simple and green method for the synthesis of Au, Ag, and Au–Ag alloy ... Figure Calculated optical absorption spectra for Au-Ag bimetallic colloidal solutions with different molar ratios of Au and Ag Conclusions Au-Ag nanoclusters of...

Ngày tải lên: 04/06/2014, 15:20