Results 101 to 110 of about 65,338 (283)

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

Advanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni, Erik Troschke, Henrik Vorwerk, Shiva Shahbazi Avarvand, Andreas Stihl, Nadzeya Brezhneva, Marius Hermesdorf, Desirée Leistenschneider, Felix H. Schacher, Jacob Schneidewind, Martin Oschatz   +10 more
wiley   +1 more source

Generation of Propagation-Dependent OAM Self-Torque with Chirped Spiral Gratings

Photonics
The application of non-uniform spiral gratings to control the structure, topological parameters and propagation of orbital angular momentum (OAM) beams was studied experimentally with coherent near-infrared light.
Ruediger Grunwald, Mathias Jurke, Max Liebmann, Alexander Treffer, Martin Bock   +4 more
doaj   +1 more source

Enhancing Direct Solar Water Splitting via ALD of Multifunctional TiO2/Pt Nanoparticle Coatings With Engineered Interfaces to GaAs/GaInP Tandem Cells

Advanced Functional Materials, EarlyView.
Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth, Verena Streibel, Oliver Bienek, Sergej Levashov, Johannes Dittloff, Kristof Möller, Johanna Eichhorn, Matthias M. May, Ian D. Sharp   +8 more
wiley   +1 more source

Electromagnetic analysis of arbitrarily shaped pinched carpets

, 2010
We derive the expressions for the anisotropic heterogeneous tensors of permittivity and perme- ability associated with two-dimensional and three-dimensional carpets of an arbitrary shape. In the former case, we map a segment onto smooth curves whereas in
A. Greenleaf, A. J. Ward, Guillaume Dupont, R. V. Kohn, Stefan Enoch, Sébastien Guenneau, W. Cai   +6 more
core   +2 more sources

Non Thermal‐Driven Photocatalytic Ammonia Decomposition at Near‐Room Temperature on a Plasmonic Nanocone Array

Advanced Functional Materials, EarlyView.
Plasmonic photocatalytic ammonia decomposition occurs at near‐room temperature on a plasmonic Au nanocone array under visible light illumination. The nanostructure efficiently harnesses plasmonic modes, leading to increased reaction rates upon plasmon decay.
Thanh‐Lam Bui, S. M. Hossein Hejazi, Jan Navrátil, Hana Kmentová, Petr Bábor, Olivier Henrotte, Luca Mascaretti, Matteo Bisetto, Stephen K. Sanders, Andrea Schirato, Michal Otyepka, Piotr Błoński, Tiziano Montini, Radek Zboril, Paolo Fornasiero, Alessandro Alabastri, Alberto Naldoni, Stepan Kment   +17 more
wiley   +1 more source

Propagation of a Partially Coherent Bessel–Gaussian Beam in a Uniform Medium and Turbulent Atmosphere

Photonics
In this paper, the coherent properties of partially coherent Bessel–Gaussian optical beams propagating through a uniform medium (free space) or a turbulent atmosphere are examined theoretically.
Igor Lukin, Vladimir Lukin
doaj   +1 more source

Multimode Raman light-atom interface in warm atomic ensemble as multiple three-mode quantum operations

, 2015
We analyze the properties of a Raman quantum light-atom interface in long atomic ensemble and its applications as a quantum memory or two-mode squeezed state generator.
Parniak, Michał, Pęcak, Daniel, Wasilewski, Wojciech   +2 more
core   +1 more source

Nanoscale control over optical singularities

Optica, 2018
Optical singularities have attracted much interest in the past decades, enabling advancements in nano-manipulation, bio-sensing, and quantum optics, owing to their ability to carry and transfer angular momentum on the nano scale. Optical vortices (OVs), in this respect, are phase singularities useful for many applications, such as particle trapping and
Evgeny Ostrovsky, Kobi Cohen, Shai Tsesses, Bergin Gjonaj, Guy Bartal   +4 more
openaire   +1 more source

2D Multifunctional Spin‐Orbit Coupled Dirac Nodal Line Materials

Advanced Functional Materials, EarlyView.
A total of 473 nonmagnetic and antiferromagnetic 2D spin‐orbit coupled Dirac nodal line materials are screened, spanning 5 layer groups and 12 magnetic space groups. Furthermore, it integrates their topological properties with electride, multiferroic, and magnetic characteristics, revealing unique systems with expanded functionalities and promising ...
Weizhen Meng, Ying Liu, Jialin Gong, Yalong Jiao, Xiaoming Zhang, Wenxian Li, Zhenxiang Cheng, Tie Yang   +7 more
wiley   +1 more source

Instantaneous field singularities in electromagnetic waves

New Journal of Physics, 2018
Singularities, i.e. places of discontinuity of physical parameters are extremely general objects appearing in both stationary and wave processes. They commonly occur in purely coherent, highly directional electromagnetic waves, such as laser beams ...
Vladlen Shvedov, Wieslaw Krolikowski
doaj   +1 more source