Results 31 to 40 of about 474 (141)

Sound absorption performance of underwater anechoic coating in plane wave normal incidence condition [PDF]

IOP Conference Series: Materials Science and Engineering, 2019
On account of the theory of non-uniform waveguide and the wave propagation theory in layered media, a complete theoretical model is established for predicting the sound absorption performance of multi-layer underwater composite anechoic coating. Furthermore, the correctness of the theoretical calculation is verified by the finite-element simulation ...
Z Zhang, L Li, Y Huang, Q Huang
openaire   +1 more source

Monolithic Opto‐Acoustic Synesthetic Transduction of Color and Sound in a Single Chiral Liquid Crystal Elastomer

Small, EarlyView.
Monolithic cholesteric liquid crystal elastomers simultaneously generate color and sound under electrically programmed stimuli. Low‐frequency electric fields modulate the helical pitch to produce tunable structural colors, while high‐frequency excitation induces membrane vibration for acoustic emission.
Ji Yoon Park, In Pyo Hong, Seohyun Woo, Jun Hyuk Shin, Sang Hyun Han, Hak Jun Yang, Su Seok Choi   +6 more
wiley   +1 more source

Sound absorption coefficient measurement and correction of acoustic coating based on impedance experiment

Zhongguo Jianchuan Yanjiu
ObjectiveAs specific and demanding requirements are imposed by measuring the impedance of the anechoic coatings on the hull surface of an underwater vehicle using the traditional water-filled tube experiment, a method of sound absorption coefficient ...
Fan ZHANG, Chidong CHE, Shengjian GU, Zijie LI   +3 more
doaj   +1 more source

Design and Development of a Bio-Inspired UHF Sensor for Partial Discharge Detection in Power Transformers

Sensors, 2019
In this paper, the design and development of a bio-inspired UHF sensor for partial discharge detection in power transformers is presented. The UHF sensor was developed for external use in dielectric windows of power transformers.
Luiz A. M. M. Nobrega, George V. R. Xavier, Marcus V. D. Aquino, Alexandre J. R. Serres, Camila C. R. Albuquerque, Edson G. Costa   +5 more
doaj   +1 more source

Stretch Tunable Active Frequency Selective Fabric for Dynamically Switchable Bandstop and Transparency

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
This stretchable active frequency selective fabric achieves reversible switching between bandstop and transparent states through strain‐induced reconfiguration of its conductive network. Its zero‐power and mechanically tunable characteristics offer potential for wearable electromagnetic functional materials.
Hao Feng, Zhenjia Zhou, Hongling Liu, Yong Wang, Fuwang Guan, Ni Wang, Weidong Yu   +6 more
wiley   +1 more source

Validation of a Pregnancy‐Associated Glycoprotein–Based Lateral Flow Assay for Early Pregnancy Detection in Goats

Veterinary Medicine and Science, Volume 12, Issue 4, July 2026.
The commercial AOFPT developed to detect PAG molecules in bovine serum, was observed to be a rapid, practical, and effective method for early pregnancy diagnosis for to improve reproductive performance and herd management strategies in goats, especially following the post‐mating 28th day .
Mehmet Can Kara, Ayşe Merve Köse
wiley   +1 more source

Infrared‐Microwave Compatible Stealth Transparent Metasurface With Digital Camouflage and Hybrid Absorption‐Scattering

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
Traditional metasurfaces suffer from the drawbacks of pure microwave absorption and low IR emissivity stealth, namely failing to match complex ambient backgrounds with varying IR emissivity and generating excess heat accumulation (enhanced IR thermal radiation).
Dan Liu, Yanzhao Wang, Kefeng Ji, Huanhuan Gao, Sihong Zhou, Tong Liu, He‐Xiu Xu   +6 more
wiley   +1 more source

Multispectral Shared‐Aperture Metasurface With RF Wide‐Angle and Polarization Stability for Tri‐Band Transmission and High‐Fidelity Imaging

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
This study presents a multispectral compatible metasurface that achieves high transmission across three radio frequency bands, high optical transparency, and high fidelity imaging capabilities through a two‐dimensional spatial combination strategy of synergistic and minimalist low‐duty‐cycle units.
He Lin, Yingchi Lin, Ling Wang, Yuyao Wang, Ningrui Xiao, Da Mu, Xiaoliang Ma, Cheng Huang, Xiangang Luo   +8 more
wiley   +1 more source

Towards an active semi-anechoic room: simulations and first measurements

Acta Acustica
Semi-anechoic rooms are used for the acoustic characterisation of noise sources. They involve heavy infrastructures and thick absorbent lining. The aim of this work is to demonstrate a less expensive alternative by complementing a thin passive coating ...
Pinhède Cédric, Boulandet Romain, Friot Emmanuel, Allado Mark R., Côté Renaud, Herzog Philippe   +5 more
doaj   +1 more source

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, Volume 11, Issue 9, 6 May 2026.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source