BAND-GAPS
Better band gaps with asymptotically corrected local exchange potentials
... predict band gaps ...exact-exchange band structure with no more computational cost than the LDA or ...accurate band gaps for semiconductors and insulators, where in some cases it yields ...
9
A numerical method for flexural vibration band gaps in a phononic crystal beam with locally resonant oscillators
... To demonstrate the advantages of the present approach, the following case is compared with the PWE method and the FEM method. Han et al. [11] used the modified transfer matrix method (MTM) and the PWE method to calculate ...
17
Hyperelastic tuning of one dimensional phononic band gaps using directional stress
... We show that the band-gaps are highly tunable with respect to the direction and the magnitude of static stress. We also show that the effect is enhanced both by the resonances in the 1D phononic crystals ...
6
Online Full Text
... the band gaps and studied the effectiveness of the layered periodic foundations to isolate the seismic load in the horizontal and vertical direction through numerical ...
6
Analytical approximations for low frequency band gaps in periodic arrays of elastic shells
... the band gaps observed in a doubly periodic array of elastic shells and related to the scat- terer’s resonances are ...These band gaps are observed below the first Bragg band ...the ...
12
Resolution of the Band Gap Prediction Problem for Materials Design
... experimental band gap of ...quoted band gaps at the optimized ...experimental band gaps, it is unclear from the paper whether these calculations include spin-orbit coupling or ...their ...
104
Analysis of the photonic bandgaps for gyrotron devices
... global band gaps as a function of ratio of rods radii r to the rods spacing a would be helpful for understanding the PBG ...global band gaps for the TE modes in triangular and square ...global ...
6
γ Ray Modifications of Optical/Chemical Properties of Polycarbonate Polymer
... indirect band gaps was observed. The indirect band gap values were found lower in comparison to the corresponding values of direct band gap in the pristine and γ-irradiated poly- ...optical ...
9
Design of 1D composite photonic crystals with an extended photonic band gap
... photonic band gap 共PBG兲 within the ...a band gap as wide as possible during the design of a ...the band gaps within photonic crys- tals is to analyze the dispersion ...
5
A polariton condensate in a photonic crystal potential landscape
... complete band gaps in 2D configurations [2], and can hardly ever provide single on-site polariton localization. The con fi nement provided by etched pillars [4] resembles an in fi nitely high hard-wall box due ...
8
Prediction of Quantum Anomalous Hall Effect in MBi and MSb (M:Ti, Zr, and Hf) Honeycombs
... associated band gap, mag- netic moment, phase, and material classification are also ...The band gap is calcu- lated as the difference between the lowest unoccupied and the highest occupied ...with ...
8
A Phononic Crystal Strip with Lowering and Extending Band Gaps
... The band gap map of the third type with metallic horizontal stub is illustrated in figure ...all band gaps are concentrated around 20 – 100 MHz and trend to move to lower frequencies when increasing ...
7
Synthesis and optical properties characterization of poly(vinyl chloride) modified by various alcohol
... in band to band transition due to shifting the band density of state toward the energy ...Energy gaps were measured as the behavior of a conductivity measurement of pure and modified PVC can ...
9
Band Gaps and Single Scattering of Phononic Crystal
... low-frequency gaps with a structure of small ...nonic band gap for ...frequency band gaps that are useful to prohibit specific vibrations in accurate technologies such as transducers and ...
5
Topological tight binding models from nontrivial square roots
... bands, band gaps and interfaces, as expressed via topo- logical Zak phases, generalized Witten indices, and their mismatch at boundaries and defects (see Section IV and ...
18
Band gaps of wurtzite ScxGa1-xN alloys
... their band gaps and lattice ...wide band gap semiconductors for use in UV optoelectronics, which have different electronic structures and different relationships between their lattice parameters and ...
7
Study of the Optical Property and Applications of TIO2–SIO2 Nano Composites in Textile
... the band gap and n is the exponent, which is depending on quantum selection rule for a particular ...optical band gap From the (αhν)2 versus photon energy (hν) plots, the optical band gaps Eg ...
9
Controlled Nanophase Development in Photocatalytic Titania
... the band-gap is in the ultraviolet range, substantially increasing the operating costs of titania-based ...5) band-gap shifted doped-titanias 6) or porous composite ...semiconductor band gaps ...
5
Towards Earthquake Shields: A Numerical Investigation of Earthquake Shielding with Seismic Crystals
... crystals, band gaps were observed in the band structure characteristics of crystals with various lattice geometries ...within band gaps, they were also referred to as “stop bands.” ...
7
Superabsorption of light via quantum engineering
... photonic band gaps and quantum feedback control, we show that sustained superlinear scaling of the light absorption rate with the number of atoms is ...
7