Results 51 to 60 of about 27,248 (265)

Molecularly Dissipative Liquid Crystal Elastomer Foams for Impact and Vibration Attenuation

Advanced Functional Materials, EarlyView.
Liquid crystal elastomer foams integrate cellular deformation with mesogen reorientation to create a dual‐scale energy dissipation mechanism. Progressive pore collapse absorbs mechanical loads, while stress‐induced mesogen reorientation provides additional damping, resulting in reduced impact transmission and broadband suppression of vibrational ...
Subi Choi, Sangyeop Lee, In‐sun Jeong, Kyungjun Song, Eugene M. Terentjev, Suk‐kyun Ahn   +5 more
wiley   +1 more source

LPDA-inspired Material-Geometry joint wide-angle broadband absorption based on metapyramid

Materials & Design, 2023
The rapid development of metamaterials offers a new avenue to achieve exotic electromagnetic properties, such as perfect absorption for important stealth engineering applications.
Yanzhao Wang, Chaohui Wang, Yuefeng Zhai, Fan Zhang, Huiling Luo, Tong Liu, Guangwei Hu, He-Xiu Xu   +7 more
doaj   +1 more source

Self‐Powered, Ultra‐Sensitive InGaAs/ITO Nanowire Radial Junction Infrared Photodiode for Low Flux Imaging at Room Temperature

Advanced Functional Materials, EarlyView.
This study reports a self‐powered InGaAs nanowire photodetector achieving single‐photon‐level sensitivity in the shortwave infrared at non‐cryogenic temperatures. The device demonstrates high‐speed imaging capabilities even under extremely low‐flux conditions.
Kosala Dhanawansha, Chaohao Chen, Zhe Li, Tuomas Haggren, Dawei Liu, Yang Yu, Baolei Liu, Sanjay Krishna, Hark H. Tan, Chennupati Jagadish, Lan Fu   +10 more
wiley   +1 more source

Theoretical and experimental investigation on the sound absorption performance of ultra-thin curled acoustic metasurface

Journal of Low Frequency Noise, Vibration and Active Control
A simplified model of the absorption coefficient of traditional Helmholtz resonators (THR) was established, and the influence of different geometric parameters on the absorption coefficient of THR was analyzed.
Baozhu Cheng, Jiesen Zhang, Yang Liu, Jiaqi Sun, Bin Li, Hong Hou   +5 more
doaj   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

Advanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee, Junho Min, Yonas Tsegaye Megra, Min‐Hye Jeong, Hwi Je Woo, Jaewon Han, Junheon Ha, Gyunghyun Jang, Young Jae Song, Hyun‐Soo Ra, Hoon Hahn Yoon, Jong‐Soo Lee   +11 more
wiley   +1 more source

Graphene-based dual-broadband terahertz absorber with independent frequency and amplitude tunability

AIP Advances
In the design of metamaterials, combining two active materials is acknowledged as an effective strategy for independently manipulating multi-band terahertz wave absorption.
Chenguang Zhang, Chunming Tang, Jinlu Sun   +2 more
doaj   +1 more source

Terahertz wideband perfect absorber based on open loop with cross nested structure

Results in Physics, 2019
Achieving broadband perfect absorption has always been a challenge for terahertz bands. Many terahertz broadband perfect absorbers have been proposed, but for most of them, bandwidth with an absorption rate greater than 99% is narrow.
Meiwen Li, Cuiping Liang, Yubin Zhang, Zao Yi, Xifang Chen, Zigang Zhou, Hua Yang, Yongjian Tang, Yougen Yi   +8 more
doaj   +1 more source

Inverse Design of Broadband Absorption in the Visible with Plasmonic Multilayered Planar Structures

Photonics, 2023
Plasmonic structures based on stacked layers of metal and dielectric materials excel as broadband absorbers because of the nonlinear relationship between the compound materials’ dispersion characteristics and the multilayered structure’s actual ...
Davi F. Rêgo, Igor L. Gomes de Souza, Vitaly F. Rodriguez-Esquerre, Gilliard N. Malheiros-Silveira   +3 more
doaj   +1 more source

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source

A compact multifunctional metastructure for Low-frequency broadband sound absorption and crash energy dissipation

Materials & Design, 2022
Sound absorption structures, as an effective approach to reducing sound radiation, have always received extensive attention in the engineering of vibration and noise reduction.
Zhiwen Ren, Yuehang Cheng, Mingji Chen, Xujin Yuan, Daining Fang   +4 more
doaj   +1 more source