Results 81 to 90 of about 423,178 (287)

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

Advanced Functional Materials, EarlyView.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda, Jorge Cardenas‐Gamboa, Ding Pei, François Bertran, Leila Noohinejad, Snehashish Chatterjee, Changjiang Yi, Iñigo Robredo, Horst Borrmann, Maia G. Vergniory, Chandra Shekhar, Claudia Felser   +11 more
wiley   +1 more source

Multiple Twinning in Nacre and Aragonite

Advanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt, William O. Nachlas, Bil Schneider, Xiaoming Mao, Eric Tambutté, Alexander A. Venn, Sylvie Tambutté, Pupa U. P. A. Gilbert   +7 more
wiley   +1 more source

Synthesis and coordination chemistry of 2-(di-2-pyridylamino)pyrimidine; structural aspects of spin crossover in an Fe(II) complex [PDF]

, 2012
This paper was accepted on February 26 20122-(Di-2-pyridylamino)pyrimidine (L), a potentially ditopic tetradentate ligand, was synthesized from commercially available di-2-pyridylamine and 2-chloropyrimidine.
Addison, Amoore, Amoore, Antonioli, Atmani, Balzani, Barbour, Bloch, Boujemma Moubaraki, Brooker, Christopher J. Sumby, Domaga?a, Halcrow, Halcrow, Hayami, Janiak, Kaes, Keith S. Murray, Kharasch, Martin, Mosny, Murray, Murray, Neville, Neville, Olguin, Quesada, Quesada, Quesada, Rachel S. Crees, Real, Real, Ross, Ross, Sheldrick, Sumby, Sumby, Sumby, Sumby   +38 more
core   +2 more sources

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

Advanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka, Oleg Prymak, Kateryna Loza, Matthias Epple   +3 more
wiley   +1 more source

The time revolution in macromolecular crystallography

Structural Dynamics
Macromolecular crystallography has historically provided the atomic structures of proteins fundamental to cellular functions. However, the advent of cryo-electron microscopy for structure determination of large and increasingly smaller and flexible ...
Georgii Khusainov, Joerg Standfuss, Tobias Weinert   +2 more
doaj   +1 more source

Phyllotaxis: Leaf arrangement on a horizontal branch and crystallographic borders

Vestnik MGTU
Phyllotaxis is an orderly arrangement of leaves on plant stems and branches. The natural reason of this arrangement is that each species based on the habitat conditions in the course of evolution in one way or another solved the problem of optimising the
Voytekhovsky Yu. L., Gunchenkova A. D.
doaj   +1 more source

Pedagogical engineering to the teaching of the practical experiments of chemistry: Development of an application of three-dimensional digital modelling of crystalline structures

Cogent Education, 2019
Technological innovation in science provides complementary tools for exploring new teaching strategies within a pedagogical framework that promotes interaction between the teacher and the learner.
Jabran Daaif, Soufiane Zerraf, Malika Tridane, Said Benmokhtar, Said Belaaouad   +4 more
doaj   +1 more source

Atomically Revealing Bulk Point Defect Dynamics in Hydrogen‐Driven γ‐Fe2O3 → Fe3O4 → FeO Transformation

Advanced Functional Materials, EarlyView.
In situ TEM uncovers the atomic‐scale mechanisms underlying hydrogen‐driven γ‐Fe2O3→Fe3O4→FeO reduction. In γ‐Fe2O3, oxygen vacancies cluster around intrinsic Fe vacancies, leading to nanopore formation, whereas in Fe3O4, vacancy aggregation is suppressed, preserving a dense structure.
Yupeng Wu, Dongxiang Wu, Wenhui Zhu, Xiaobo Chen, Zhikang Zhou, Zhilu Liang, Shuonan Ye, Meng Li, Xiao Tong, Kim Kisslinger, Sooyeon Hwang, Dmitri Zakharov, Renu Sharma, Judith C. Yang, Guangwen Zhou   +14 more
wiley   +1 more source

Simultaneous dynamic electrical and structural measurements of functional materials [PDF]

, 2015
A new materials characterization system developed at the XMaS beamline, located at the European Synchrotron Radiation Facility in France, is presented.
A. Muñiz-Piniella, C. A. Lucas, C. Vecchini, D. Dontsov, D. Wermeille, J. Wooldridge, L. Bouchenoire, M. G. Cain, M. Lesourd, M. Stewart, O. Bikondoa, P. Thompson, S. Brown, S. Lepadatu, S. R. C. McMitchell, T. P. A. Hase, Waser R.   +16 more
core   +1 more source

Mixed Chirality α-Helix in a Stapled Bicyclic and a Linear Antimicrobial Peptide Revealed by X-Ray Crystallography [PDF]

, 2021
S. Baeriswyl, Hippolyte Personne, Ivan Di Bonaventura, Thilo Köhler, Christian van Delden, Achim Stocker, Sacha Javor, Jean‐Louis Reymond   +7 more
openalex   +1 more source