Results 101 to 110 of about 465,453 (325)

Repetitively pulsed, wavelength-selective carbon dioxide laser [PDF]

open access: yes, 1968
Carbon dioxide laser as a simple portable unit generates coherent light pulses at selected infrared wavelengths.
Hanst, P. L.
core   +1 more source

Quantum Cryptography

open access: yes, 1995
Quantum cryptography is a new method for secret communications offering the ultimate security assurance of the inviolability of a Law of Nature.
Bell J. S.   +30 more
core   +1 more source

HCM-based Indoor Optical Wireless Communications: Timing and Data Recovery

open access: gold, 2023
Masoud Johar   +3 more
openalex   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

Broadband Photonic RF Channelization Based on Coherent Optical Frequency Combs and I/Q Demodulators

open access: yesIEEE Photonics Journal, 2012
In this paper, a novel photonic-assisted broadband and high-resolution radio-frequency (RF) channelization scheme based on dual coherent optical frequency combs (OFCs), regular optical de-muxes, and I/Q demodulators is analyzed and experimentally ...
Xiaojun Xie   +6 more
doaj   +1 more source

Encryption in phase space for classical coherent optical communications. [PDF]

open access: yesSci Rep, 2023
Chan A   +5 more
europepmc   +1 more source

AI‐Enhanced Gait Analysis Insole with Self‐Powered Triboelectric Sensors for Flatfoot Condition Detection

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
The given research presents an innovative insole‐based device employing self‐powered triboelectric nanogenerators (TENG) for flatfoot detection. By integrating TENG tactile sensors within an insole, the device converts mechanical energy from foot movements to electrical signals analyzed via machine learning, achieving an 82% accuracy rate in flatfoot ...
Moldir Issabek   +7 more
wiley   +1 more source

THz-to-optical conversion in wireless communications using an ultra-broadband plasmonic modulator [PDF]

open access: green, 2019
S. Ummethala   +17 more
openalex   +1 more source

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