Results 131 to 140 of about 186,285 (262)

High‐ Q Tunable Waveguide Filter With Constant Absolute Bandwidth Using One Tuning Element Based on Modified Cavity Perturbation Theory

Yu Cao, Yong Liu
openalex   +1 more source

Toward Highest Frequency, Phase‐Sensitive Electric Field Sensing Enabled by Plasmonic Circuits

Laser &Photonics Reviews, EarlyView.
An electromagnetic field sensor using an optical sensor head for distortion‐free, high‐sensitivity measurements with potential for high‐frequency operation is presented. The frequency response is enabled by an antenna‐integrated plasmonic modulator. The sensitivity is calculated, and optimizations to obtain thermal‐background‐limited sensitivity are ...
Michael Baumann, Hande Ibili, Boris Vukovic, Tobias Blatter, Jasmin Smajic, Juerg Leuthold   +5 more
wiley   +1 more source

Transitioning from WiFi 6 to WiFi 7: A Metrological Assessment of Human-Centric EMF Exposure and Multi-Link Operation (MLO) Dynamics. [PDF]

Sensors (Basel)
Buda AM, Vatamanu D, Andreica SI, Munteanu C, Miclaus S.   +4 more
europepmc   +1 more source

In Situ Acoustic Monitoring of Focused Femtosecond Pulse Duration in Air

Laser &Photonics Reviews, EarlyView.
Air‐breakdown acoustics at the laser focus is used to determine femtosecond pulse duration with a simple USB microphone. By chirp‐tuning and compressing 1030 nm pulses from 241 to 50 fs, the acoustic amplitude scales inversely proportional to the square root of the pulse duration, enabling in situ readout over 50 fs–5 ps—crucial for precise pulse ...
Indrė Meškėlaitė, Hsin‐Hui Huang, Haoran Mu, Nguyen Hoai An Le, Tomas Katkus, Edvinas Aleksandravičius, Gabrielius Kontenis, Domas Paipulas, Saulius Juodkazis, Darius Gailevičius   +9 more
wiley   +1 more source

Graphene based terahertz MIMO antenna with machine learning regression for 6G communications. [PDF]

Sci Rep
Haque MA, Akhter MS, Das I, Zaman TU, Tiang JJ, Singh NSS, Algarni AD, Ateya AA.   +7 more
europepmc   +1 more source

Bayesian Optimization of Grayscale Patterns for Layer‐Height Accuracy in Projection Multi‐Photon 3D Printing

Laser &Photonics Reviews, EarlyView.
Bayesian optimization combined with in situ quantitative phase imaging enables autonomous correction of layer‐height deviations in projection multi‐photon lithography. By jointly tuning model parameters and grayscale exposure settings, the method achieves more uniform and accurate layers within 300 prints, offering a fast, data‐efficient route to ...
Jason E. Johnson, Xianfan Xu
wiley   +1 more source

Ultralow-Frequency Epsilon-Near-Zero States in 3D-Printed High-Entropy Alloy Metacomposites for Ultra-Thin Perfect RF Absorption. [PDF]

Adv Mater
Xie P, Wu H, Cheng Z, Liu M, Liu Y, Pang W, Fan R, Liu Y.   +7 more
europepmc   +1 more source

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

Laser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan, Yanlei Liu, Kun Yu, Han Dai, Tianxu Jia, Zhiying Chen, Junsuk Rho, Yufang Liu   +7 more
wiley   +1 more source

High-Precision Salt Concentration Detection Using a CMUT Array with Temperature Compensation. [PDF]

Micromachines (Basel)
Chai H, He C, Luo M, Zhang G, Wang H, Wang R, Yang Y, Cui J, Zhang W, Jia L.   +9 more
europepmc   +1 more source

Chain‐End Grafting of RAFT Polyelectrolyte Macroligands to Stabilize Near‐Infrared‐Emitting Gold Nanoclusters

Macromolecular Rapid Communications, EarlyView.
Surface‐functionalized gold nanoclusters (AuNCs) are synthesized in situ by chain‐end grafting of RAFT polyelectrolytes at room temperature directly in water. It leads to highly stable polymer‐AuNCs nanohybrids emitting near‐infrared photoluminescence with µs lifetimes. ABSTRACT With their photoluminescence properties, gold nanoclusters (AuNCs, d<2 nm)
Bárbara Casteleiro, Pierre Alcouffe, Fernande Da Cruz, Agnès Crépet, José Manuel Gaspar Martinho, Marie‐Thérèse Charreyre, José Paulo Sequeira Farinha, Arnaud Favier   +7 more
wiley   +1 more source