Results 121 to 130 of about 24,972 (270)
Periodic Structure Type Electromagnetic Wave Analysis by the Non-Standard FDTD method Using Complex Formulation [PDF]
, 2003 本論文ではNon-Standard FDTD (NS-FDTD)法による周期構造型電波吸収対解析のため,新たに複素修正関数を導入した複素形式によるNS-FDTD法を提案した.本手法の特性を明らかにするため,数値分散式と安定条件を新たに導出した.この結果,提案する複素形式のNS-FDTD法は,通常のFDTD法に比べはるかに高精度かつ安定であることがわかった.更に,本手法を周期構造の桟形フェライト電波吸収体解析へ適用し,ここで提案する複素形式のNS ...
Kashiwa, Tatsuya +2 more
core
Electrically Responsive Structural‐Color Materials
Aggregate, Volume 7, Issue 7, July 2026.This review highlights electrically responsive structural‐color materials as next‐generation electrochromic platforms, summarizing key structural designs, modulation mechanisms, and performance metrics to enable continuous, low‐voltage, and tailorable color tuning for advanced display, camouflage, and security applications.
Qiming Wang +4 more
wiley +1 more source
Bioelectromagnetics, Volume 47, Issue 5, July 2026.ABSTRACT This study investigated the potential impact of fifth‐generation (5 G) radiofrequency (RF) on the autonomic nervous system (ANS). Electrocardiograms (n = 43) and salivary samples (n = 33) were collected from healthy young volunteers before, during, and after exposure to a 3.5 GHz frequency (electrical field intensity ~1–2 V/m) emitted by an ...
Jamal Layla +9 more
wiley +1 more source
A Subgridding Technique for the Complex Nonstandard FDTD Method [PDF]
, 2004 本論文では2次元Complex Nonstandard FDTD(CNS-FDTD)法のためのサブグリッド法を提案した.CNS-FDTD法の特性を考慮し,空間補間,差分演算子補間及び時間補間を新たに導入した.本サブグリッド法の有効性を示すため,主グリッドと局所グリッドの接続に従来法の線形補間及び2次補間を用いた場合と比較した.この結果,本サブグリッド法は従来法に比べ安定性と精度に優れていることが分かった.更に,損失媒質装荷大型方形Cavityの散乱解析において ...
Taguchi, Kenji +4 more
core
An Ultra‐Low‐Power and High‐Temperature‐Homogeneity Wafer‐Scale Infrared Source
ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.A wafer‐scale MEMS infrared source with an Al@nanoforest radiation layer achieves high emissivity and temperature homogeneity at low power, enabling efficient CO2 detection for smart agriculture. Non‐dispersive infrared gas sensors, renowned for their high selectivity and high reliability, are extensively employed in applications of smart agriculture ...
Qirui Zhang +9 more
wiley +1 more source
The FDTD(2,4) Method for Highly Accurate Acoustic Analysis in the Three Dimensional Space [PDF]
, 2002 近年,音響分野においてシミュレーションが重要となってきている.音響シミュレーション法としてFDTD法(Finite-Difference Time-Domain method)が提案されている.しかし,この手法は室内音響伝搬などの大規模伝搬解析においては位相誤差が無視できなくなり解析上問題となる.そのため,位相誤差が縮小される高精度な解析法が望まれている.本論文では,高精度解析法である時間及び空間についてそれぞれ2次及び4次精度の3次元FDTD(2,4)法の定式化を行った.また ...
千藤, 雄樹 +4 more
core
Numerical investigation of breast tumour detection using multi-static radar
, 2003 A breast cancer detection technique using multi-static radar is proposed herein. For the first time, images are produced using this technique, using backscatter data produced from an anatomically realistic 2D MRI-derived FDTD model of the breast ...
Hagness, SC +4 more
core +1 more source
Modeling of Elves Doublets Based on Variations of the Lightning Return Stroke Current
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Elves are transient luminous events appearing above thunderclouds. They are produced by high peak current lightning events. They occasionally appear as doublets or in general as multiplets. We model elves doublets by setting the temporal and spatial variations of the return stroke current amplitude and we show that our modeling results are ...
Petr Kašpar +2 more
wiley +1 more source
Dynamic Holographic Display With Multiplexed Dielectric Metasurfaces
Nanophotonics, Volume 15, Issue 12, 25 June 2026.Based on multiplexed metasurfaces, we show hybrid multiplexing of polarization, wavelength, and orbital angular momentum can be applied for dynamic tuning. Our strategy presents a highly compact and efficient solution for high‐capacity, multi‐dimensional holography, with promising applications in advanced displays, data storage, optical encryption, and
Yu Liu +8 more
wiley +1 more source
Engineering Angular Dispersion via Hybrid Local–Nonlocal Metasurfaces
Nanophotonics, Volume 15, Issue 12, 25 June 2026.A single‐layer hybrid local–nonlocal silicon metasurface is experimentally demonstrated as a polarization‐insensitive angular filter in transmission. By combining local nanopillar response, lattice‐mediated interactions near the Rayleigh anomaly, and diffraction‐assisted substrate coupling, the platform maintains high transmission within a ±15° $\pm ...
Shany Z. Cohen +5 more
wiley +1 more source