Results 191 to 200 of about 66,629 (316)

Environmental and Ecological Monitoring with Biodegradable Technologies

open access: yesAdvanced Science, EarlyView.
This review examines the development and application of wireless biodegradable sensors for environmental monitoring. It explores (bio)degradable materials, their degradation mechanisms in various environments, and non‐toxic fabrication techniques. Additionally, it addresses scalable production and sustainable powering solutions, emphasizing the high ...
Mohammad Javad Bathaei   +7 more
wiley   +1 more source

Longitudinally engineered metasurfaces for 3D vectorial holography. [PDF]

open access: yesLight Sci Appl
Tan L   +9 more
europepmc   +1 more source

Wavelength Tunable Pulsed Lasers Enabled by a Versatile Metafiber Functioning as Both Saturable Absorber and Filter

open access: yesAdvanced Science, EarlyView.
Schematic diagram of wavelength‐tunable pulsed laser based on metafiber‐FP (Fabry‐Perot). The alcohol solution is filled inside the FP cavity to simultaneously form a spectral filter and a saturable absorber. By adjusting the refractive index value and temperature inside the cavity, the tunable filtering effect is introduced to realize wavelength ...
Bo Fu   +8 more
wiley   +1 more source

Protocol‐Agnostic Meta Key Distribution for Encrypted Wireless Communications Enabled by Space‐Time‐Coding Metasurface

open access: yesAdvanced Science, EarlyView.
This paper presents a programmable metasurface‐based Meta Key Distribution (MKD) system for secure, protocol‐independent key exchange in indoor wireless settings. By embedding entropy into the wireless channel, it enables lightweight, compatible cryptographic key generation.
Xinyu Li   +7 more
wiley   +1 more source

High-efficiency broadband active metasurfaces via reversible metal electrodeposition. [PDF]

open access: yesLight Sci Appl
Li Q   +11 more
europepmc   +1 more source

Dynamic multimode OAM generation implemented by mechanically reconfigurable metasurfaces

open access: diamond
Xiangming Wu   +5 more
openalex   +1 more source

Super‐Robust Telecommunications Enabled by Topological Half‐Supermodes

open access: yesAdvanced Science, EarlyView.
Through topological half‐supermode engineering, we realize a valley‐ridge gap waveguide that is directly compatible with conventional waveguides and features topological protection. This design halves the lateral size via a PEC boundary, enabling direct TE₁₀‐mode matching and robust bend‐immune transmission.
Rui Zhou   +8 more
wiley   +1 more source

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