Results 91 to 100 of about 2,136,561 (347)

Dual Resonant Plasmonic Infrared Pixels for Selective Optical Encoding

Advanced Materials Technologies, EarlyView.
This study presents dual‐resonant plasmonic nanostructures for advanced optical encoding in the mid‐infrared. By optimizing plasmonic resonances in nano‐antennas within ring cavities, selective and simultaneous tunability in both the MWIR and LWIR regions is achieved.
Goekalp Engin Akinoglu, Leshy Patchett, Timothy Denis James, Paul Mulvaney, James Andell Hutchison   +4 more
wiley   +1 more source

Stable Perfectly Matched Layers with Lorentz transformation for the convected Helmholtz equation

Journal of Computational Physics, 2021
P. Marchner, H. Bériot, X. Antoine, C. Geuzaine   +3 more
semanticscholar   +1 more source

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

Ultrasensitive and Reliable Diamond MEMS Magnetic Force Sensor with 3D Imaging at Room Temperature

Advanced Materials Technologies, EarlyView.
A magnetic force sensor by integrating a single‐crystal diamond MEMS resonator with a magnetic particle, achieving exceptional sensitivity, stability, and reliability at room temperature is demonstrated. This simple yet robust design enables precise detection of magnetic field gradients and supports 3D magnetic force imaging, paving the way for next ...
Zilong Zhang, Keyun Gu, Zhijian Zhao, Zheng‐Yan Lei, Yi‐Hsiu Kao, Meiyong Liao, Takahito Ono, Masaya Toda   +7 more
wiley   +1 more source

Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals

Advanced Optical Materials, EarlyView.
Plasmonic crystals based on grating‐gated 2D electron gas in AlGaN/GaN heterostructures provide a platform for strong light‐matter interaction. Pump‐probe experiments revealed strong terahertz nonlinearity leading to 45% increase in transmission at a fluence below 350 nJ cm−2.
Pavlo Sai, Vadym V. Korotyeyev, Dmytro B. But, Maksym Dub, Dmitriy Yavorskiy, Jerzy Łusakowski, Mateusz Słowikowski, Serhii Kukhtaruk, Yurii Liashchuk, Jeong Woo Han, Christoph Böttger, Alexej Pashkin, Stephan Winnerl, Wojciech Knap, Martin Mittendorff   +14 more
wiley   +1 more source

Calculation of the same Lorentz factor using the opposite approach

AIP Advances
This article extends the law of electromagnetic oscillation to form a theoretical system of spatial particles. According to this theory, the speed of light is variable and motion is absolute.
Wu Wang
doaj   +1 more source

Functional Forms for Lorentz Invariant Velocities

Mathematics
Lorentz invariance lies at the very heart of Einstein’s special relativity, and both the energy formula and the relative velocity formula are well-known to be invariant under a Lorentz transformation.
James M. Hill
doaj   +1 more source

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

Understanding the Role of Fabry‐Perot Resonances in Maximizing Absorption for Ultrathin Sn Halide Perovskite Optoelectronic Devices

Advanced Optical Materials, EarlyView.
A design principle is presented that maximizes absorption in ultrathin (tens of nanometers) Sn halide perovskite optoelectronic devices by aligning their intrinsic absorption wavelengths with Fabry–Pérot (FP) resonances. The ultrathin FASnI3 devices exhibit increases open‐circuit voltage, reduces dark current, and high photocurrent, yielding high ...
Donggyu Lim, Jia Choi, Seongcheol Ju, Bum Ho Jeong, Hakjun Kim, Kyu‐Tae Lee, Hui Joon Park   +6 more
wiley   +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