Results 51 to 60 of about 456 (152)

Gradient index metamaterials for broadband underwater sound absorption

APL Materials
The underwater broadband anechoic coating is highly demanded in acoustic stealth for underwater vehicles. In this work, we propose a gradient index metamaterial for broadband underwater sound absorption, which is further experimentally validated under ...
Xiao Pan, Xinsheng Fang, Xuewen Yin, Yan Li, Yongdong Pan, Yabin Jin   +5 more
doaj   +1 more source

A Study of Standalone GNSS Positioning Precision in Covered Agricultural Environments: ETFE Polytunnels Versus Glass Greenhouses

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
The paper presents an experimental study of the standalone positioning performance of a high‐end survey grade and a mass‐market dual‐frequency GNSS receiver in covered agricultural environments (CAEs) comparing an ETFE polytunnel and a Cambridge‐style glass greenhouse against an open‐field baseline.
Alex Schofield, Jasmine Zidan, Raphael Grech, Esther Anyaegbu, Emilio Loo‐Monardez, Paul A. Jennings, Matthew D. Higgins   +6 more
wiley   +1 more source

Advancements in ship acoustic stealth technology based on acoustic absorbing and insulating metamaterials

Zhongguo Jianchuan Yanjiu
With the rapid advancement of modern underwater detection technologies, both detection accuracy and frequency coverage, particularly in the low-frequency range, have improved significantly.
Wei LI, Zhiwei SONG, Zhiyuan HE, Jiuhui WU   +3 more
doaj   +1 more source

Protection of custom satellite antennas for deep-sea monitoring probes: Insights from the SONDA project

Applied Ocean Research
This study presents the development and testing of satellite antennas for the SONDA probe, an innovative deep-sea monitoring system designed to be deployed by high-altitude balloons.
T. Matos, H. Dinis, C.L. Faria, M.S. Martins   +3 more
doaj   +1 more source

Homogeneous models of anechoic rubber coatings

, 2003
NR ...
openaire   +1 more source

Miniaturization of Sub 6 GHZ Band 5G Monopole Antenna with Manganese Assisted CoFe₂O₄ Nano Self-Assembly Magneto-Dielectric Coating. [PDF]

ACS Omega
Dayanidhi V, Krishnan T, Dheivasigamani T.   +2 more
europepmc   +1 more source

Electromagnetic (EM) metasurface with wireless signal control function fabricated by 3D printing. [PDF]

Microsyst Nanoeng
Lin Z, Zhang D, Ding W, Feng J, Yu L, Wang Z, Zhang N, Guo Q, Yang J.   +8 more
europepmc   +1 more source

A Sticky Situation: The Unfortunate Consequence of Chewing Gum. [PDF]

CASE (Phila), 2023
Lee C, Dow S, Henkin S, Morley BD, Rassias AJ, Taub C, Costa SP.   +6 more
europepmc   +1 more source

Electromagnetic Field Shielding Using Interior Paints Enhanced with Metal Powders. [PDF]

Materials (Basel)
Zbojovský J, Liptai P.
europepmc   +1 more source

Design of a textile-based UHF RFID sensor for high read range and multilevel diaper moisture sensing. [PDF]

Sci Rep
Tean CJ, Low JH, Chee PS, Lim EH, Mun HK.   +4 more
europepmc   +1 more source