Results 61 to 70 of about 51,337 (249)

A Colloidal Quantum Dot Thermistor and Bolometer

Advanced Materials, EarlyView.
This work introduces colloidal quantum dot thermistors employing a potential barrier structure to tune the activation energy of transport and hence the temperature coefficient of resistance (TCR). Upon integration with plasmonic absorbers, the CQD‐based bolometer device enables room‐temperature wavelength‐selective photodetection across the mid‐ to ...
Gaurav Kumar, Mariona Dalmases, Nima Taghipour, Rajesh Bera, Guy L. Whitworth, Goretti Torres Perez, Miguel Dosil, Gerasimos Konstantatos   +7 more
wiley   +1 more source

FDTD Calculations of the Diffraction Coefficient of Vibrating Wedges [PDF]

, 2011
The full-vector Maxwell\u27s equations Unite-difference time-domain (FDTD) method is employed to calculate diffraction coefficients of vibrating conducting and dielectric wedges.
Madrid, Monica
core   +1 more source

Benchmarking five numerical simulation techniques for computing resonance wavelengths and quality factors in photonic crystal membrane line defect cavities [PDF]

, 2018
We present numerical studies of two photonic crystal membrane microcavities, a short line-defect cavity with relatively low quality ($Q$) factor and a longer cavity with high $Q$.
Breinbjerg, Olav, Burger, Sven, de Lasson, Jakob Rosenkrantz, Frandsen, Lars Hagedorn, Gregersen, Niels, Gutsche, Philipp, Häyrynen, Teppo, Ivinskaya, Aliaksandra, Kim, Oleksiy S., Lavrinenko, Andrei V., Mørk, Jesper, Sigmund, Ole, Wang, Fengwen   +12 more
core   +2 more sources

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Model of light bullet propagation in LiF crystal

Компьютерная оптика
A numerical model is developed for simulation of the propagation of a light bullet in LiF crystal and the formation of a colored track. The model reproduces the previously observed longitudinal oscillations in the concentration of color centers in the ...
A.V. Kuznetsov
doaj   +1 more source

An Artificial Anisotropy Four-Step HIE-FDTD Method With Lower Numerical Dispersion Error

IEEE Access, 2020
In this article, by introducing artificial anisotropic (AA) parameters in the four-step hybrid implicit-explicit finite-difference time domain (HIE-FDTD) method, an AA four-step HIE-FDTD method is proposed, which can reduce the numerical dispersion error
Yong-Dan Kong, Chu-Bin Zhang, Hong-Yu Zhang, Qing-Xin Chu   +3 more
doaj   +1 more source

FDTD Method for Electromagnetic Simulations in Media Described by Time-Fractional Constitutive Relations

Applied Sciences, 2023
In this paper, the finite-difference time-domain (FDTD) method is derived for electromagnetic simulations in media described by the time-fractional (TF) constitutive relations.
Piotr Pietruszka, Tomasz P. Stefański, Jacek Gulgowski   +2 more
doaj   +1 more source

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

Advanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón, Víctor Anthony García Rivera, Stéphan Cagnon, Souleymane Toubou Bah, Younès Messaddeq, Euclydes Marega Junior   +5 more
wiley   +1 more source

Optoelectronically Active GaAs/GeSn‐MQW/Ge Heterojunctions Created via Semiconductor Grafting

Advanced Optical Materials, EarlyView.
Semiconductor Grafting enables a lattice‐mismatched GaAs/GeSn‐MQW/Ge heterojunction with engineered band offsets and optical field distribution. The enlarged conduction and valence band discontinuities govern asymmetric carrier transport, producing bias‐dependent dual‐mode photodetection from visible to near‐infrared wavelengths.
Jie Zhou, Haibo Wang, Yang Liu, Yifu Guo, Alireza Abrand, Yiran Li, Jiarui Gong, Hieu D. Trinh, Po Rei Huang, Jianping Shen, Shengqiang Xu, Daniel Vincent, Samuel Haessly, Yi Lu, Munho Kim, Shui‐Qing Yu, Parsian K. Mohseni, Guo‐En Chang, Zetian Mi, Kai Sun, Xiao Gong, Mikhail A. Kats, Zhenqiang Ma   +22 more
wiley   +1 more source

Polarization-Current-Based FDTD Near-to-Far-Field Transformation

, 2009
A new near-to-far-field transformation algorithm for three-dimensional finite-different time-domain is presented in this article. This new approach is based directly on the polarization current of the scatterer, not the scattered near fields.
Deinega, Drezek, Farjadpour, Guo, Husnik, Jerome V. Moloney, Kim, Lermé, Li, Oetting, Onuta, Robinson, Scott Brock, Sun, Taflove, Umashankar, Yang, Yong Zeng, Yurkin, Zhai   +19 more
core   +1 more source