Results 171 to 180 of about 3,098 (254)

An Optically Transparent, Lightweight, High‐Efficiency, and Ultra‐Broadband Polarization Converter Based on a Low‐Filling‐Factor Metallic Frame Metasurface

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 8, August 2026.
The graphical abstract presents the unit‐cell architecture of the proposed transparent metasurface polarization converter, featuring a low‐filling‐factor rotated copper frame on PET, an air‐cavity spacer, and an ITO ground plane. The design enables optical transparency, lightweight construction, and ultra‐broadband, high‐efficiency cross‐polarization ...
Huu Lam Phan   +3 more
wiley   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

open access: yesAdvanced Science, Volume 13, Issue 44, 7 August 2026.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li   +7 more
wiley   +1 more source

Departing With the Wind: Spring Migration Timing in Brent Geese From Their Most Important Staging and Wintering Site, the Wadden Sea World Heritage Site

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
The timing of migratory departure reflects a balance between endogenous schedules and transient environmental opportunities. By linking GPS‐derived departure events with hourly atmospheric data, we demonstrate that wind assistance strongly increases departure probability in Brent Geese, while this selectivity weakens over time as migratory urgency ...
Nora Theurich   +4 more
wiley   +1 more source

Abalone Mortality Associated With Hypoxia in Tidepools During a Summer Heatwave

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
Abalone (Haliotis roei) inhabit tidepools on intertidal platforms. During heatwaves and periods of low tide, water exchange in tidepools ceases. While temperatures in tidepools remain constant, oxygen levels are significantly reduced. Abalone mortality in tidepools is associated with oxygen depletion rather than thermal stress.
Marthe M. Gagnon   +2 more
wiley   +1 more source

Toward Autonomous Clinics: Human–Robot Collaboration in Clinical Care

open access: yesMedComm, Volume 7, Issue 8, August 2026.
This graphical abstract summarizes the conceptual structure of human–robot collaboration (HRC) for autonomous clinical systems. The framework is organized around a dual‐brain architecture in which a professional brain supports clinical reasoning tasks such as diagnosis, image analysis, treatment planning, and patient monitoring, while a physical brain ...
Xinyuan Wu   +8 more
wiley   +1 more source

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