Results 101 to 110 of about 2,160,501 (327)

Analysis of Electromagnetic Problems in the Presence of Non-uniform Movements [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Electromagnetic problems with moving structures are considered. For objects moving at a uniform velocity, the most popular technique used in the literature consists of a change of the reference frame and the utilization of Lorentz transformation of ...
Mohammad Marvasti, Halim Boutayeb
doaj   +1 more source

Lorentz-conformal transformations in the plane

Expositiones Mathematicae, 2017
While conformal transformations of the plane preserve Laplace's equation, Lorentz-conformal mappings preserve the wave equation. We discover how simple geometric objects, such as quadrilaterals and pairs of crossing curves, are transformed under nonlinear Lorentz-conformal mappings.
Stephen P. Shipman, Patrick D. Shipman, Barbara A. Shipman   +2 more
openaire   +3 more sources

How to Manufacture Photonic Metamaterials

Advanced Materials Technologies, EarlyView.
Metamaterials boast applications such as invisibility and “hyperlenses” with resolution beyond the diffraction limit, but these applications haven’t been exploited in earnest and the market for them hasn’t grown much likely because facile and economical methods for fabricating them without defect has not emerged.
Apurba Paul, Gregory Timp
wiley   +1 more source

Galilean relativity – Explained by means of the triangle solutions

Results in Physics
This paper presents a novel approach to understanding relativity through the lens of the triangle solutions. Triangle solutions will serve as a mathematical model for relativity.
Shukri Klinaku
doaj   +1 more source

Carbon‐Coated Moth‐Eye Structure: An Ultrabroadband THz‐DUV Near‐Perfect Absorber

Advanced Optical Materials, EarlyView.
A silicon moth‐eye surface coated with pyrolytic carbon achieves >98% absorption from 1 to 1200 THz by combining gradient‐index matching with PyC's broadband conductivity, forming an ultra‐broadband absorber from THz to deep UV. Experimental results and simulations agreed well.
Yuki Hakamada, Maria Cojocari, Mizuho Matoba, Shotaro Kawano, Haruyuki Sakurai, Kuniaki Konishi, Daniil Pashnev, Surya Revanth Ayyagari, Vytautas Janonis, Andrzej Urbanowicz, Saulius Tumėnas, Justinas Jorudas, Irmantas Kašalynas, Janna Pennanen, Adigun Deborah Amos, Aleksandr Saushin, Georgy Fedorov, Yuri Svirko, Polina Kuzhir   +18 more
wiley   +1 more source

Plasmonic Nanoparticle‐on‐Nanoslit Antenna as Independently Tunable Dual‐Resonant Systems for Efficient Frequency Upconversion

Advanced Optical Materials, EarlyView.
The nanoparticle‐on‐slit (NPoS) cavity has emerged as a sub‐wavelength platform for efficient coherent frequency conversion between mid‐infrared and visible light, and for nanoscale nonlinear vibrational spectroscopy. This numerical study identifies the NPoS quasi‐normal modes, relates them to known nanogap patterns, and predicts the relative ...
Huatian Hu, Zhiwei Hu, Christophe Galland, Wen Chen   +3 more
wiley   +1 more source

High‐Chroma, High‐Contrast Tunable Color Coatings Using Sb2S3 in a Metal‐Dielectric Stack

Advanced Photonics Research, EarlyView.
A novel tunable color coating design is presented, using the phase‐change material Sb2S3 in a Fabry–Perot cavity. The resulting coatings yield bright, attractive colors, and display a significant color change when annealed using a hotplate or a laser. This demonstrates that Sb2S3 is a promising candidate for use in tunable color coatings.
Riley Shurvinton, Arjun Karimbana, Priya Dominic, Antonin Moreau, Olivier Hector, Konstantinos Iliopoulos, Fabien Lemarchand, Julien Lumeau   +7 more
wiley   +1 more source

Mitigating Losses in Hyperbolic Asymptotic Eigenmodes

Advanced Photonics Research, EarlyView.
Herein, hyperbolic asymptotic eigenmodes, high‐k modes aligned with asymptotic directions in hyperbolic metamaterials, are introduced. By tuning permittivity tensors to balance loss compensation (Re(ε∥)/Re(ε⊥)=Im(ε∥)/Im(ε⊥))$\left(\right. \text{Re} \left(\right. \left(\epsilon\right)_{\parallel} \left.\right) / \text{Re} \left(\right.
Lu Song, Huaping Wang, Yingjie Wu, Tong Cai, Jiangang Liang, Lian Shen   +5 more
wiley   +1 more source

Sur la deduction axiomatique des formules de transformation de Lorentz [PDF]

, 1955
Toshizô Matsumoto
openalex   +1 more source

A Trade‐Off between Pulse Energy and Stability in Seeded Free‐Electron Lasers

Advanced Photonics Research, EarlyView.
Seeded free‐electron lasers (FELs) require balancing competing factors for optimal performance. This work analyzes how dispersion strength influences output in high‐gain harmonic generation. Results reveal a trade‐off: maximizing pulse energy often comes at the cost of reduced stability and vice versa.
Li Zeng, Huaiqian Yi, Xiaofan Wang, Chao Feng, Weiqing Zhang   +4 more
wiley   +1 more source