narrow band gap crystals
Steady state and transient Brillouin gain in narrow band-gap magnetized semiconductors
... Following the advent of lasers, nonlinear optics (NLO) has emerged as a multidisciplinary subject of great breadth and richness, attracting the interest of researchers in basic as well as applied fields. The subject area ...
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Broadening of Omnidirectional Photonic Band Gap in Si-Based One Dimensional Photonic Crystals
... photonic crystals (PCs) for understanding their various properties and potential ...Photonic crystals are structures of materials with periodically modulated dielectric ...photonic crystals can ...
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Design of 1D composite photonic crystals with an extended photonic band gap
... secondary band gap for the CPC is not closed when using PC2 with A = ...PC gap maps, regions of transparency may exist in the middle of the extended PBGs in composite ...fairly narrow interval ...
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Mechanoluminescence Studies of Gamma Irradiated Sodium Chloride Single Crystals and Microcrystalline Powder Doped with Terbium
... Radiation causes excitation of molecules besides formation of free radicals. The presence of excited states can be discovered by measuring of light emission when crystallite material is heated (thermoluminescence), or ...
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Narrow band photometry of Wolf-Rayet stars
... As pointed out by Roberts (1 9 6 2 ), there appears to be a complete lack of WR stars in the directions between = l40° and 220°. From Figure IV.1 it is clear that there are comparatively few WR stars outside ...
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OFDM CHANNEL ESTIMATION WITH NARROW BAND INTERFERENCE
... OFDM (Orthogonal frequency-division multiplexing) is a parallel transmission technique. OFDM is a proven and effective technique to counter multipath fading as well as impulsive noise [2]. For example Emerging ...
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Phase measurements and narrow spectral band inference
... increase N until the bandwidth was sufficiently small for an ordinary analysis to be applied, but this is not always possible since there is usually a practical limit, dictated by other than mathematical con ...
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Classification of ice crystals at C-band
... Starting with recorded C-band radar data of ice crystal signa- tures a comparison to simulation results was shown. The re- sult is that for monodisperse volumes (only one type of plate, stellar or column) of ice ...
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Mechanical filtering for narrow band hearing in the weta
... quite narrow (Field et ...or narrow frequency selectivity and the biophysical and neural mechanisms subtending such selectivity are still only partially ...with narrow-band intraspecific ...
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Electromagnetic Band Gap Structures Incorporate with Dual Band Microstrip Antenna Array
... as Band Rejecter ...targeted band of frequencies, not including the harmonics in this case, from propagating through them and allows only a certain selected band of frequencies to pass ...
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A study on the value of narrow band imaging (NBI) for the general investigation of a high risk population of nasopharyngeal carcinoma (NPC)
... results. Narrow-band imaging (NBI) can display these abnormal subtle submucosal ves- sels ...under narrow-band imaging (NBI) were as followed: brownish spots, irregular microvascular pat- tern ...
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Analysis of the spectrum transform for narrow band signal passing through nonlinear section of a digital radar receiver
... Many researchers have investigated the nonlinearity in digital communication and radar systems. For example, Lin et al. analyzed the problem of fifth-order nonlinear distortion and spectral regrowth in a communication ...
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Narrow band anisotropic electronic structure of ReS2
... valence band top, each with a narrow bandwidth typically on the order of only 200 ...multiple band crossings throughout the Brillouin ...these band crossings, thereby creating much nar- rower ...
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Frequency Tunable Antenna for Digital Video Broadcasting Hand-Held Application
... With the development of hand-held communication devices, such as Digital Video Broadcast-Handled (DVB-H), the needs for small and broadband antennas are ever demanding. The major challenges are the very broadband ...
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Effects of Ion Doping on the Optical Properties of Dye Sensitized Solar Cells
... first band gap decreased after the ...The band gap of the mixture narrowed compared with pure TiO 2 , the right concentration of Zn 2+ doped ...
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Will the U.S. Poverty Achievement Gap Narrow by 2015? Probably Not
... poverty gap for 2003 and 2009 for each of the 50 states, as well as the change in the percentage of students eligible for free lunch between 2003 and ...poverty gap columns indicate the percent eligible ...
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First light of the VLT planet finder SPHERE. II. The physical properties and the architecture of the young systems PZ Telescopii and HD 1160 revisited
... The raw data were preprocessed using the SPHERE DRH soft- ware (Pavlov et al. 2008). This included bias subtraction and flat-fielding with coronagraphic flats taken after the science se- quences, as well as ZIMPOL ...
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Natural variability and anthropogenic effects in a Central Mediterranean core
... Fig. 6. Total δ 18 O SSA-AR forecast y pred (t ) (red curve) for the Industrial Era and observed LFV values y LF (t ) (black curve) over the entire 2200 yr covered by our record. Both y pred (t ) and y LF (t ) represent ...
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A Novel Multi-Band Electromagnetic Band-Gap Structure
... Abstract—In this paper, a novel multi-band EBG structure is presented. By making slots on Sievenpiper High Impedance Surface (HIS) to increase the inductance and capacitance, the resonant frequency of the EBG ...
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Polyaniline/MnTiO3Nanocomposites: Fabrication, Characterization and Optical band gap
... direct band gap for MnTiO 3 and the PANI/MnTiO 3 NCs with 10 and 20wt% of MnTiO 3 NPs loading using the Tauc model came out to be ...1.25. Band gap analysis indicates semiconducting behavior ...
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