Results 61 to 70 of about 26,075,004 (255)

Structure of surface electronic states in strained mercury telluride [PDF]

, 2019
We present the theory describing the various surface electronic states arisen from the mixing of conduction and valence bands in a strained mercury telluride (HgTe) bulk material.
Kibis, O. V., Kyriienko, O., Shelykh, I. A.   +2 more
core   +2 more sources

High-Frequency Local Field Potential Oscillations for Pigeons in Effective Turning

Animals
Flexible turning behavior endows Homing Pigeons (Columba livia domestica) with high adaptability and intelligence in long-distance flight, foraging, hazard avoidance, and social interactions. The present study recorded the activity pattern of their local
Ke Fang, Xiaofei Guo, Yezhong Tang, Wenbo Wang, Zhouyi Wang, Zhendong Dai   +5 more
doaj   +1 more source

Investigation of unconventional reconstruction and electronic properties on the Na2IrO3 surface

, 2014
Na2IrO3 is an intriguing material for which spin-orbit coupling plays a key role. Theoretical predictions, so far unverified, have been made that the surface of Na2IrO3 should exhibit a clear signature of the quantum spin Hall effect.
Erwin, S. C., Gegenwart, P., Lupke, F., Manni, S., Mazin, I. I., Wenderoth, M.   +5 more
core   +1 more source

The emerging use of magnetic resonance imaging to study river bed dynamics [PDF]

, 2015
The characterization of surface and sub-surface sedimentology has long been of interest to gravel-bed river researchers. The determination of surface structure is important as it exerts control over bed roughness, near-bed hydraulics and particle ...
Haynes, Heather, Holmes, William, Lakshmanan, Susithra, Ockleford, Anne-Marie, Vignaga, Elisa   +4 more
core  

Emergent quantum confinement at topological insulator surfaces

, 2012
Bismuth-chalchogenides are model examples of three-dimensional topological insulators. Their ideal bulk-truncated surface hosts a single spin-helical surface state, which is the simplest possible surface electronic structure allowed by their non-trivial $
AA Mostofi, C Chen, CL Kane, CP Vicente, CR Ast, D Hsieh, DO Scanlon, E Frantzeskakis, F Zhang, H Lin, H Mirhosseini, H Zhang, HJ Noh, HM Benia, I Souza, J Kuneš, JP Perdew, K Ishizaka, L Fu, LA Wray, M Bianchi, M Bianchi, M Bianchi, MG Vergniory, MS Bahramy, MS Bahramy, MZ Hasan, OV Yazyev, PDC King, PDC King, PDC King, PDC King, S Basak, S Souma, S-Y Xu, SR Park, T Menshchikova, T Valla, W Jung, W Meevasana, Y Ishida, Y Xia, YA Bychkov, YH Wang, YL Chen, Z-H Zhu   +45 more
core   +2 more sources

Tamm states in one dimensional photonic crystals containing left-handed materials [PDF]

, 2006
We present a theoretical study of electromagnetic surface waves localized at an interface separating a conventional uniform medium and a semi-infinite 1-D photonic crystal made of alternate left-handed metamaterial and right-handed material which we ...
Abdolrahman Namdar, Garcia, Gerardin, Kramper, Malkova, Martorell, Moreno, Pendry, Shadrivov, Shadrivov, Shelby, Smith, Tamm, Veselago, Yeh, Yeh, Yeh, Zhang, Ziolkowski   +18 more
core   +2 more sources

A stable lithium-rich surface structure for lithium-rich layered cathode materials

Nature Communications, 2016
Lithium ion batteries are encountering ever-growing demand for further increases in energy density. Li-rich layered oxides are considered a feasible solution to meet this demand because their specific capacities often surpass 200 mAh g−1 due to the ...
Sangryun Kim, Woosuk Cho, Xiaobin Zhang, Y. Oshima, J. Choi   +4 more
semanticscholar   +1 more source

Left-Handed Surface Waves in a Photonic Structure

, 2002
It is demonstrated that an isotropic left-handed medium can be constructed as a photonic structure consisting of two dielectric materials, one with positive and another with negative dielectric permittivities epsilon.
G. Shvets, Pendry, Smirnova, Smith, Smith, Spitzer, Valanju, Veselago   +7 more
core   +1 more source

On the role of melt flow into the surface structure and porosity development during selective laser melting

, 2015
In this study, the development of surface structure and porosity of Ti–6Al–4V samples fabricated by selective laser melting under different laser scanning speeds and powder layer thicknesses has been studied and correlated with the melt flow behaviour ...
C. Qiu, C. Panwisawas, M. Ward, H. Basoalto, J. Brooks, Moataz M. Attallah   +5 more
semanticscholar   +1 more source

Bio-Inspired Adhesive Footpad for Legged Robot Climbing under Reduced Gravity: Multiple Toes Facilitate Stable Attachment

Applied Sciences, 2018
This paper presents the design of a legged robot with gecko-mimicking mechanism and mushroom-shaped adhesive microstructure (MSAMS) that can climb surfaces under reduced gravity.
Zhongyuan Wang, Zhouyi Wang, Zhendong Dai, Stanislav N. Gorb   +3 more
doaj   +1 more source