Results 61 to 70 of about 7,310 (213)

Frequency-Dependent FDTD Algorithm Using Newmark’s Method

International Journal of Antennas and Propagation, 2014
According to the characteristics of the polarizability in frequency domain of three common models of dispersive media, the relation between the polarization vector and electric field intensity is converted into a time domain differential equation of ...
Bing Wei, Le Cao, Fei Wang, Qian Yang
doaj   +1 more source

Ultrabroadband and Highly Sensitive Short‐Wave Infrared Molecular Fingerprinting via Acoustic MXene Plasmons

Advanced Science, EarlyView.
Acoustic plasmons in Ti3C2Tx MXene strongly compress infrared electromagnetic fields and enhance light–matter interactions at the nanoscale. This platform couples broadband plasmon excitations with molecular vibrations, enabling simultaneous sensing of high‐ and low‐frequency vibrational modes in ultrathin PMMA and graphene oxide films, and extending ...
Changhoon Park, Jisung Kwon, Nu‐Ri Park, Hyerim Kim, Hyeju Kim, Yury Gogotsi, Chong Min Koo, Myung‐Ki Kim   +7 more
wiley   +1 more source

A hybrid method combining the Time-Domain Method of Moments, the Time-Domain Uniform Theory of Diffraction and the FDTD [PDF]

Advances in Radio Science, 2007
In this paper a hybrid method combining the Time-Domain Method of Moments (TD-MoM), the Time-Domain Uniform Theory of Diffraction (TD-UTD) and the Finite-Difference Time-Domain Method (FDTD) is presented.
A. Becker, V. Hansen
doaj  

FDTD Method for Periodic Structures

, 2009
This chapter describes the finite-difference time-domain (FDTD) techniques developed for the modeling of periodic structures. After reviewing the basic principles of the FDTD method, it presents a spectral PBC for the method, which can be used in both guided wave analysis and scattering characterization.
Ji Chen, Fan Yang, Rui Qiang
openaire   +2 more sources

Dumbbell‐Structured Plasmonic‐Enhanced Optical Nanoprobes Boosting Photo‐Magnetic‐Acoustic Multimodal Imaging‐Guided Photodynamic‐Photothermal Synergistic Treatment and Immunogenic Death in Nasopharyngeal Carcinoma

Advanced Science, EarlyView.
This study reports a novel rationally‐designed optical nanoprobe based on dumbbell‐shaped mesoporous silica‐coated gold nanorods, loaded with rare‐earth oxides, photosensitizers, and tumor‐targeted peptides, enabling plasmonic‐enhanced multimodal imaging and PTT‐PDT synergy.
Baikang Zhuang, Yubiao Yang, Wen Han, Yi Tang, Chengxin Yao, Fuli Zhao, Wenxiao Fang, Jinjie Li, Xiaolan Huo, Yiqian An, Yuanzhi Shao, Botao Gao, Jinchang Yin   +12 more
wiley   +1 more source

Multi‐Channel Electrically Tunable Varifocal Metalens With Compact Multilayer Polarization‐Dependent Metasurfaces and Liquid Crystals

Advanced Science, EarlyView.
A compact eight‐channel electrically tunable varifocal metalens with three single‐layer polarization‐multiplexed bi‐focal metalens and three LC cells. The total thickness of the device is ∼6 mm, while the focal lengths can be switched among eight values (3.6, 4.2, 4.5, 4.9, 6.2, 6.9, 8.4, and 9.6 mm). ABSTRACT As an essential module of optical systems,
Zhiyao Ma, Yize Liu, Zhe Li, Tian Tian, Yuxuan Liao, Xue Feng, Yongzhuo Li, Kaiyu Cui, Fang Liu, Hao Sun, Wei Zhang, Yidong Huang   +11 more
wiley   +1 more source

Breast Tumour Identification based on Chimera Overset Grid with Spline Interpolation in Forward-Backward Time-Stepping

ASM Science Journal, 2021
Active microwave imaging (MI) technique has been recently recommended as a new technology for early detection of malignant breast tumours. Finite-difference Time-domain (FDTD) method is an effective numerical tool for computational electrodynamics ...
Bong Siaw Wee, Kismet Hong Ping, Shafrida binti Sahrani @ Shahran   +2 more
doaj   +1 more source

Self‐Adaptive Non‐Flammable Wallpaper With Layered Bead‐Network Structure for Light Path Modulation Enabling on‐Demand Building Thermal Management

Advanced Science, EarlyView.
A layered bead‐network wallpaper is designed to modulate the light propagation path, overcoming the color residue limitations of thermochromic components for efficient automatic switching between radiative cooling and solar heating modes. The layered bead‐network wallpaper provides passive, all‐season thermal regulation while offering self‐cleaning and
Jianyu Wu, Linmin Xia, Jiankun Wu, Yuying Yang, Wuhong Zhong, Jianguo Li, Yan Yu, Rilong Yang   +7 more
wiley   +1 more source

FDTD Simulation of Near-Field Radiative Heat Transfer between Thin Films Supporting Surface Phonon Polaritons: Lessons Learned

Journal of Thermal Science and Technology, 2013
We present the numerical simulation, using the finite difference time domain (FDTD) method, of the radiative heat transfer between two thin SiC slabs. We aim to explore the ability of the FDTD method to reproduce the analytical results for the Surface ...
Alejandro DATAS, Daisuke HIRASHIMA, Katsunori HANAMURA   +2 more
doaj   +1 more source

In Situ Pseudo‐Halide Diffusion Enables Buried Interface Regulation and Crystallinity Enhancement in Perovskite Solar Cells

Advanced Science, EarlyView.
Thermally activated LiHCOO induces in situ pseudo‐halide diffusion, promoting buried interface strain release and perovskite crystallization. The monoclinic LiHCOO phase forms an open framework structure that enhances HCOO− diffusion and drives interfacial restructuring.
Chao Gao, Li He, Changjiang Li, Long Fang, Wenzhong Shen   +4 more
wiley   +1 more source