Results 81 to 90 of about 25,720 (229)

GaN-Based LEDs Grown on Graphene-Covered SiO₂/Si (100) Substrate

Crystals, 2020
The growth of nitride on large-size and low-cost amorphous substrates has attracted considerable attention for applications in large-scale optoelectronic devices.
Wurui Song, Fang Ren, Yunyu Wang, Yue Yin, Shuo Zhang, Bo Shi, Tao Feng, Jianwei Wang, Meng Liang, Yiyun Zhang, Tongbo Wei, Jianchang Yan, Junxi Wang, Jinmin Li, Xiaoyan Yi, Zhiqiang Liu   +15 more
doaj   +1 more source

Charge Transport in Ternary Charge‐Transfer Solid Solution Single Crystals

Advanced Functional Materials, EarlyView.
This study deconvolutes the roles of indirect (superexchange) and direct electronic coupling on charge transport in single crystals of an organic charge‐transfer molecular semiconductor (OSC). This model system elegantly demonstrates that structural defects introduced by chemical dopants play a significant role in the electronic performance ...
Jonathan C. Novak, Manikanta Makala, Edith L. MacKenzie, Veaceslav Coropceanu, Kimberly Agosto, Abigail A. Moravek, Oana D. Jurchescu, Ren A. Wiscons   +7 more
wiley   +1 more source

Behavior of spatial curves under different transformations in Euclidean 4-space

Demonstratio Mathematica
This study investigates the conditions under which various curves maintain their characteristics when mapped between two regular surfaces in four-dimensional Euclidean space E4{{\mathbb{E}}}^{4}.
Badyal Pushpinder, Singh Kuljeet, Sharma Sandeep   +2 more
doaj   +1 more source

Space curves defined by curvature–torsion relations and associated helices [PDF]

, 2019
The relationships between certain families of special curves, including the general helices, slant helices, rectifying curves, Salkowski curves, spherical curves, and centrodes, are analyzed. First, characterizations of proper slant helices and Salkowski
Alghanemi, A, Deshmukh, S, Farouki, RT
core  

Gradient catastrophe and flutter in vortex filament dynamics

, 2011
Gradient catastrophe and flutter instability in the motion of vortex filament within the localized induction approximation are analyzed. It is shown that the origin if this phenomenon is in the gradient catastrophe for the dispersionless Da Rios system ...
Agrawal G P, Arnol’d V I, B G Konopelchenko, Batchelor G K, Beltrami E, Beltrami E, Bertola M, Bertola M Tovbis A, Di Francesco P, Eisenhart L P, Forest M G, G Ortenzi, Grinevich P G Schmidt M U, Holm D D Stechmann S N, Kamvissis S, Kodama Y, Konopelchenko B, Konopelchenko B, Konopelchenko B Martínez Alonso L, Martínez Alonso L, Milne-Thompson L M, Ricca R L, Roždestvenskii˘ B L, Saffman P G, Strong S A Carr L D, Thom R, Whitham G B, Zakharov V E, Zakharov V E   +28 more
core   +1 more source

Scalable Thermal Engineering via Femtosecond Laser‐Direct‐Written Phononic Nanostructures

Advanced Functional Materials, EarlyView.
This study demonstrates that femtosecond laser‐induced periodic surface structures (fs‐LIPSS) can function as phononic metasurfaces, reducing thermal conductivity below the plain thin‐film limit. Phonon Monte Carlo analysis reveals that the periodic structures restrict phonon mean free paths.
Hiroki Hamma, Roman Anufriev, Kazuyoshi Fushinobu, Masahiro Nomura, Byunggi Kim   +4 more
wiley   +1 more source

On rectifying slant helices in Euclidean 3-space

, 2016
In this paper, we study the position vectors of rectifying slant helices in $E^3$. First, we have found the general equations of the curvature and the torsion of rectifying slant helices. After that, we have constructed a second order linear differential
Aksoyak, Ferdağ Kahraman, Altunkaya, Bülent, Aytekin, Cahit, Kula, Levent   +3 more
core  

RECTIFYING CURVES IN THE LIGHTLIKE CONE

Journal of Science and Arts
A curve is called a rectifying curve if its position vector field always lies in its rectifying plane. In the present paper, we investigate the rectifying curves in the lightlike cone Q^2. For this firstly, we determine the curvatures of the rectifying curve in Q^2 .
HASAN DURMAZ, TEVFİK ŞAHİN
openaire   +1 more source

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

Advanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda, Thor Hvid‐Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Fardin Ghaffari‐Tabrizi, Maja A. Dunstan, Kasper S. Pedersen, Dae‐Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier   +11 more
wiley   +1 more source

Quasi-position vector curves in Galilean 4-space

Frontiers in Physics
The Frenet frame is not suitable for describing the behavior of the curve in the Galilean space since it is not defined everywhere. In this study, an alternative frame, the so-called quasi-frame, is investigated in Galilean 4-space.
Ayman Elsharkawy, Noha Elsharkawy
doaj   +1 more source