Results 121 to 130 of about 439,540 (206)

Sustainable plant‐leaf‐derived carbon dots with deep‐red emission enable 1‐min photodynamic therapy of tumors

open access: yesFlexMat, EarlyView.
In this study, plant‐derived carbon dots (CDs) were prepared using natural plant leaves as raw materials through solvothermal method. These CDs retain the porphyrin structure from chlorophyll and can simultaneously generate I and II types of reactive oxygen species. A 660 nm laser irradiation for only 1 min can achieve efficient photodynamic anti‐tumor
Renjing Chen   +13 more
wiley   +1 more source

Microwave Photonic Systems for Demodulation of Optical Fiber Interference Signals

open access: yesPhotonic Sensors
Fiber optic sensors have been gradually used in aerospace, petrochemical, electronic power, civil engineering, and biomedical fields because of their many advantages such as the anti-electromagnetic interference, corrosion resistance, light weight, small
Yuru CHEN   +3 more
doaj   +1 more source

Energy System for Wearables

open access: yesInterdisciplinary Materials, EarlyView.
This review systematically summarizes wearable energy systems, including energy demand, key technical challenges, multi‐channel energy harvesting, flexible energy storage and system integration. We discussed multi‐source hybrid energy harvesting and intelligent energy management in detail, emphasizing their roles in system performance and application ...
Yanjiao Teng   +9 more
wiley   +1 more source

Fiber Bragg gratings for microwave photonics subsystems

open access: yes, 2013
Microwave photonics (MWP) is an emerging filed in which photonic technologies are employed to enable and enhance functionalities in microwave systems which are usually very challenging to fulfill directly in the microwave domain. Various photonic devices
Wang, Chao, Yao, Jianping
core   +1 more source

Pseudomagnetic fields for classical waves in two‐dimensional artificial lattices: Mechanisms and applications

open access: yesInfoScience, EarlyView.
Pseudomagnetic fields make light and sound emulate charged particles in magnetic fields, enabling magnetic‐free signal processing. This Review summarizes their origins, three implementations in two‐dimensional artificial lattices, and applications in energy localization and robust transport, guiding the design of topological integrated devices ...
Shuaihu Liu   +5 more
wiley   +1 more source

Kondo resonance of a microwave photon

open access: yesPhysical Review B, 2012
Final Version: Main text and Supplementary ...
openaire   +3 more sources

Microwave signals spectru.m analysis by means of microwave photonics

open access: yes, 2015
Approaches for microwave spectral analysis by means of microwave photonics are reviewed.
L. A. Aronov, V. N. Ushakov
core  

Ultra‐Fast and Energy‐Efficient PZT Optical Tunable Delay Lines for Programmable Photonic Systems

open access: yesLaser &Photonics Reviews, EarlyView.
Thin‐film PZT enables optical tunable delay lines that simultaneously offer sub‐nanosecond switching, low propagation loss, and zero‐static‐power programmability. A five‐bit on‐chip delay line provides a maximum delay of 387.5 ps with a resolution of 12.5 ps, while reconfigurable MZI splitting ratios further enable non‐volatile optical arbitrary ...
Cunyu Shi   +11 more
wiley   +1 more source

Taylor-Linearized ADMM Deep Unfolding Network With Classification Prior Guidance for Tomographic Inversion of Urban Areas

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Tomographic synthetic aperture radar (TomoSAR) is an essential technique for 3-D urban reconstruction. Traditional compressed sensing-based TomoSAR imaging methods provide super-resolution ability but suffer from high computational complexity and ...
Chunhui Li   +5 more
doaj   +1 more source

Advanced fiber Bragg gratings for microwave photonics applications

open access: yes, 2015
Owing to the unique features of flexible spectral characteristics, low loss, light weight, compact footprint, and compatibility with other fiber-optic elements, fiber Bragg gratings (FBGs) have been extensively used in various microwave photonics systems.
Wang, Chao, Chao Wang
core   +1 more source

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