Results 81 to 90 of about 555,181 (241)

Definite photon deflections of topological defects in metasurfaces and symmetry-breaking phase transitions with material loss

Nature Communications, 2018
Photonic structures can be used to simulate fundamental physical phenomena like the optical analog of gravity. Here, the authors use metasurface-engineered waveguides to emulate the optical effects of a topological defect on space-time.
Chong Sheng, Hui Liu, Huanyang Chen, Shining Zhu   +3 more
doaj   +1 more source

Resonances, radiation pressure and optical scattering phenomena of drops and bubbles [PDF]

, 1982
Acoustic levitation and the response of fluid spheres to spherical harmonic projections of the radiation pressure are described. Simplified discussions of the projections are given.
Goosby, S. G., Langley, D. S., Loporto-Arione, S. E., Marston, P. L.   +3 more
core   +1 more source

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Raman Spectroscopy of magneto-phonon resonances in Graphene and Graphite

, 2012
The magneto-phonon resonance or MPR occurs in semiconductor materials when the energy spacing between Landau levels is continuously tuned to cross the energy of an optical phonon mode.
Abergel, Ando, Ando, Ando, Aron Pinczuk, Barnes, Bruna, Cai, Casiraghi, Crowther, Das, Das, Faugeras, Faugeras, Ferrari, Goerbig, Grüneis, Gurevich, Gurevich, Hameau, Hass, Huang, Jiang, Johnson, Jun Yan, Kashuba, Kim, Kossacki, Kossacki, Latil, Leadley, Li, Lopes dos Santos, López, Magaud, Maultzsch, Mohr, Mucha-Kruczyński, Neugebauer, Ni, Novoselov, Orlita, Pisana, Piscanec, Sarah Goler, Tuinstra, Vittorio Pellegrini, Wang, Wysmołek, Yan, Yan, Yan, Yan, Zhao   +53 more
core   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Harnessing collective radiative phenomena on a photonic Kagome lattice

APL Photonics
Photonic lattices enable experimental exploration of transport and localization phenomena, two of the major goals in physics and technology. In particular, the optical excitation of some lattice sites, which evanescently couple to a lattice array ...
Ignacio Salinas, Javier Cubillos Cornejo, Alexander Szameit, Pablo Solano, Rodrigo A. Vicencio   +4 more
doaj   +1 more source

Chiral optical response of planar and symmetric nanotrimers enabled by heteromaterial selection

Nature Communications, 2016
Alternative ways to fabricate chiral media which give rise to interesting optical phenomena are sought. Here, Banzeret al. demonstrate a two-dimensional geometrically achiral nanoparticle assembly, which exhibits a chiral optical response due to its ...
Peter Banzer, Paweł Woźniak, Uwe Mick, Israel De Leon, Robert W. Boyd   +4 more
doaj   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Magnetic and electric properties of quantum vacuum

, 2012
In this report we show that vacuum is a nonlinear optical medium and we discuss what are the optical phenomena that should exist in the framework of the standard model of particle physics. We pay special attention to the low energy limit.
Battesti, Rémy, Rizzo, Carlo
core   +4 more sources

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source