Results 61 to 70 of about 13,470 (297)

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Charge transfer empties the flat band in 4Hb-TaS2, except at the surface

Communications Physics
The 4Hb polytype of TaS2 is a natural heterostructure of H and T-type layers. Intriguing recent evidence points towards a possibly chiral superconducting ground state, unlike the superconductivity found in other polytypes where the T layers are absent ...
Mihir Date, Hyeonhu Bae, Alex Louat, Gabriele Domaine, Niels B. M. Schröter, Enrico Da Como, Binghai Yan, Matthew D. Watson   +7 more
doaj   +1 more source

Propagation of Electromagnetic Waves in Slab Waveguide Structure Consisting of Chiral Nihility Claddings and Negative-Index Material Core Layer

Photonic Sensors, 2018
The dispersion equation of an asymmetric three-layer slab waveguide, in which all layers are chiral materials is presented. Then, the dispersion equation of a symmetric slab waveguide, in which the claddings are chiral materials and the core layer is ...
Alaa N. Abu Helal, Sofyan A. Taya, Khitam Y. Elwasife   +2 more
doaj   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Organic-to-inorganic structural chirality transfer in a 2D hybrid perovskite and impact on Rashba-Dresselhaus spin-orbit coupling

Nature Communications, 2020
Inversion asymmetry imparts rich condensed matter phenomena in inorganic systems, and transmission of chirality across structural motifs is an attractive design strategy to break symmetry.
Manoj K. Jana, Ruyi Song, Haoliang Liu, Dipak Raj Khanal, Svenja M. Janke, Rundong Zhao, Chi Liu, Z. Valy Vardeny, Volker Blum, David B. Mitzi   +9 more
doaj   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source

Ultrathin Chiral Metal-Organic-Framework Nanosheets for Efficient Enantioselective Separation

, 2018
Chiral metal–organic framework (CMOF) nanosheets only a few layers thick remain a virgin land waiting for exploration. Herein, the first examples of ultrathin CMOF nanosheets are prepared by the confinement growth of two‐dimensional (2D) chiral layers ...
Tang, Zhiyong, Jiawei Lv, Zhang, Yin, He, Meng, Lv, Jiawei, Xiaofei Zhang, Chang Long, Long, Chang, Zhiyong Tang, Yanfei Zhu, Zhang, Xiaofei, Zhao, Meiting, Jun Guo, Zhu, Yanfei, Yin Zhang, Meiting Zhao, Bing Han, Meng He, Guo, Jun, Han, Bing   +19 more
core   +1 more source

The properties of isolated chiral skyrmions in thin magnetic films

New Journal of Physics, 2016
Axisymmetric solitonic states ( chiral skyrmions ) were first predicted theoretically more than two decades ago. However, until recently they have been observed in a form of skyrmionic condensates (hexagonal lattices and other mesophases).
A O Leonov, T L Monchesky, N Romming, A Kubetzka, A N Bogdanov, R Wiesendanger   +5 more
doaj   +1 more source

8-Methyl-5-methylene-2-oxotricyclo[5.3.1.13,9]dodecan-endo-8-ol

Acta Crystallographica Section E, 2008
The title compound, C14H20O2, crystallizes with homochiral chains of molecules hydrogen bonded together along the b axis. Adjacent chains in the ab plane contain molecules of the same chirality, leading to a chiral segregation of the molecules into ...
Weimin Yue, Marcia L. Scudder, Donald C. Craig, Roger Bishop, Isa Y. H. Chan   +4 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source