Results 71 to 80 of about 17,301 (287)

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

Chiral Metal Surfaces and Nanoparticles

CHIMIA, 2008
The surface of metals can exhibit intrinsic chiral structure. Furthermore, chirality can be bestowed onto achiral metal surfaces by adsorption of chiral molecules.
Cyrille Gautier, Thomas Bürgi
doaj   +1 more source

Chiral TeraHertz Surface Plasmonics

ACS Photonics
41 pages, including supplementary ...
Ian Aupiais, Romain Grasset, Dmitri Daineka, Javier Briatico, Luca Perfetti, Jean-Paul Hugonin, Jean-Jacques Greffet, Yannis Laplace   +7 more
openaire   +2 more sources

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

Helical Assembly of Long‐Chain Unsubstituted Poly(Para‐Phenylene) Immobilized on Individual Cellulose Nanocrystals

Aggregate
The synthesis of chiral unsubstituted poly(para‐phenylene) (PPP) chains has remained elusive for decades, with the production of high‐molecular‐weight PPP still inaccessible to date.
Qun Song, Xintong Meng, Siyuan Liu, Zengbin Wang, Wu Wei, Mingcong Xu, Tobias Meyer, Fenghua Zhang, Xiwei Guo, Peiwen Liu, Xun Wang, Philipp Vana, Kai Zhang   +12 more
doaj   +1 more source

Chirality discrimination at the carvone air/liquid interfaces detected by heterodyne-detected sum frequency generation

Heliyon, 2019
The chiral signal of the carvone air/liquid interface is probed by heterodyne-detected sum frequency generation (HD-SFG) without the electronic resonance. The chiral SFG spectra exhibit two distinguishable spectral signatures.
Yang Wang, Jianbin Du, Xiangyun Ma, Huijie Wang, Keng C. Chou, Qifeng Li   +5 more
doaj   +1 more source

Stimulating and harnessing circularly polarized luminescence of helically assembled carbonized polymer dots via interfacial dynamics

Aggregate, 2023
Stimulating and harnessing circularly polarized luminescence (CPL) is not only a sine qua non for fundamentally unveiling chirogenesis in physical chemistry, but also a pivotal prerequisite for implementation of such phenomenon in research fields ...
Jiaying Lin, Rulin Liu, Peixian Chen, Yangfei Lv, Junjie Hao, Meijuan Chen, Dongxiang Zhang, Ruikun Pan, Yiwen Li, Xi Zhu, Tingchao He, Jiaji Cheng   +11 more
doaj   +1 more source

Imaging Chirality with Surface Second Harmonic Generation Microscopy

, 2016
Chirality is a fundamental construct in nature which arises from an antisymmetric arrangement of atoms, molecules, or larger structures, resulting in the formation of nonsuperimposable mirror images.
Matthew A. Kriech (2690641), John C. Conboy (1306143)   +1 more
core   +1 more source

Rheotaxis facilitates upstream navigation of mammalian sperm cells [PDF]

, 2014
A major puzzle in biology is how mammalian sperm maintain the correct swimming direction during various phases of the sexual reproduction process. Whilst chemotaxis may dominate near the ovum, it is unclear which cues guide spermatozoa on their long ...
Dunkel, Jörn, Raymond E Goldstein, Jörn Dunkel, Goldstein, Raymond E., Martyn Blayney, Kantsler, Vasily, Dunkel, Joern, Blayney, Martyn, Vasily Kantsler   +8 more
core   +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