Results 121 to 130 of about 14,400,955 (339)

The electronic band structure of hexagonal silicon polytypes

St. Petersburg Polytechnical University Journal: Physics and Mathematics
This work is devoted to calculations and an analysis of the electronic band structure (BS) for hexagonal (2H, 4H, 6H) and rhombohedral (9R, 15R, 21R) silicon polytypes using the empirical pseudopotential method (EPM).
Chizhova Anastasia, Nikolskaya Alena, Zaitseva Ekaterina, Konakov Anton   +3 more
doaj   +1 more source

Lithium Intercalation in the Anisotropic Van Der Waals Semiconductor CrSBr

Advanced Functional Materials, EarlyView.
We report the lithium intercalation in the layered van der Waals crystal CrSBr, revealing strongly anisotropic ion‐migration dynamics. Optical and electrical characterization of exfoliated CrSBr shows lithium diffusion coefficients that differ by more than an order of magnitude along a‐ and b‐directions, consistent with molecular dynamics simulations ...
Kseniia Mosina, Aljoscha Söll, Jiří Šturala, Martin Veselý, Petr Levinsky, Ondřej Kaman, Florian Dirnberger, Giuliana Materzanini, Nicola Marzari, Gian‐Marco Rignanese, Borna Radatović, Vlastimil Mazánek, David Sedmidubský, Zdeněk Sofer   +13 more
wiley   +1 more source

Quantum Critical Behavior and Possible Triplet Superconductivity in Electron Doped CoO2 Sheets

, 2003
Density functional calculations are used to investigate the doping dependence of the electronic structure and magnetic properties in hexagonal Na$_x$CoO$_2$.
A. Aguayo, A.C. Masset, A.J. Millis, C. Pfleiderer, D. Aoki, D. Belitz, D. Fay, D. J. Singh, D. Singh, D.J. Singh, D.J. Singh, D.J. Singh, G. Santi, H. Yamada, I. Terasaki, I. Terasaki, I.I. Mazin, I.I. Mazin, K. Fujita, K. Machida, K. Takada, M. Jansen, M. Shimizu, P.B. Allen, R. Asahi, R. Funahashi, R. Roussev, S. Li, S.A. Grigera, S.S. Saxena, T. Motohashi, T.M. Rice, T.R. Kirkpatrick, Y. Ando, Y. Maeno, Y. Miyazaki, Y. Sidis   +36 more
core   +1 more source

Artificial Amorphous Interface Matters for Boosting High‐Voltage Stable LiCoO2 Cathode

Advanced Functional Materials, EarlyView.
The amorphization of phosphate‐based surface layer with favorable Li‐ion conducting kinetics is realized by precisely tailored atomic‐level fabrication. This amorphous coating enables the lithium cobalt oxide (LCO) cathode superior high‐voltage rate capability and cycling performance, owing to the fast interfacial ionic transport and maintained ...
Jinjin Ma, Yipeng Sun, Xiaozhang Yao, Haoqi Ren, Wen Zhang, Jian Peng, Ruizhi Yu, Ruying Li, Changhong Wang, Jigang Zhou, Xueliang Sun   +10 more
wiley   +1 more source

The Effect of Morphology and Temperature on the Electrochemical Capacitive Performance of Mesoporous Carbons Synthesized Using Reverse Copolymers

International Journal of Electrochemical Science, 2019
Five kinds of mesoporous carbons (disordered mesoporous carbons (DMCs) which contain ink bottle (DMC-1) and cylinder structure (DMC-2), ordered mesoporous structure (OMCs) including lamellar (OMC-1), hexagonal (OMC-2) and cubic structure (OMC-3)) were ...
Peng Li, Xiaoxiao Ma, Yanliang Zhao, Junhua Tan, Fei Liu, Kaijin Zhu   +5 more
doaj   +1 more source

Bi-cubic interpolation for image conversion from virtual hexagonal to square structure [PDF]

, 2008
Hexagonal image structure represents an image as a collection of hexagonal pixels rather than square pixels in the traditional image structure. However, all the existing hardware for capturing image and for displaying image are produced based on square ...
He, X, Li, J
core  

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

Advanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson, Hemish B. Thakkar, Jiaen Wu, Emily C. Davidson   +3 more
wiley   +1 more source

The 5f localization/delocalization in square and hexagonal americium monolayers: A FP-LAPW electronic structure study

, 2005
The electronic and geometrical properties of bulk americium and square and hexagonal americium monolayers have been studied with the full-potential linearized augmented plane wave (FP-LAPW) method.
A. K. Ray, Akella, D. Gao, Eriksson, Griveau, Heathman, Koelling, Madsen, Murnaghan, Naegele, Niklasson, Penicaud, Perdew, Perdew, Ray, Roof, Schwarz, Skriver, Söderlind, Söderlind   +19 more
core   +2 more sources

Transition From Lattice Oxygen to Radical‐Mediated Oxidation in Ammonium‐Intercalated Birnessite Catalysts for Selective Valorization of Biomass to Produce Formic Acid

Advanced Functional Materials, EarlyView.
The catalytic valorization of biomass represents an essential approach for achieving sustainable chemical production, with formic acid (FA) being recognized as a valuable platform chemical for hydrogen storage and environmentally friendly synthetic applications.
Yiqi Geng, Wei Xiong, Wenhua Xue, Jian Ye, Puranjan Mishra, Rajenahally V. Jagadeesh, Jun Zhao   +6 more
wiley   +1 more source

A novel approach to salinity monitoring using two dimensional hexagonal photonic crystals

Scientific Reports
We developed a novel structure by constructing a hexagonal cylindrical configuration within a dielectric host, which showcases a substantial band gap. This was achieved using two-dimensional photonic crystals that possess triangular lattice periodicity ...
Hassan Sayed, Ashour M. Ahmed, Ali Hajjiah, M. A. Abdelkawy, Arafa H. Aly   +4 more
doaj   +1 more source