Results 81 to 90 of about 85,450 (309)

Narrowband Bandpass Frequency Selective Surface with Miniaturized Elements

, 2017
This article presents a bandpass frequency selective surface (FSS) with a narrowband frequency response. The designed FSS is made of miniaturized elements unit cell.
Baum, Thomas, Ebrahimi, Amir, Ghorbani, Kamran, Scott, James   +3 more
core   +1 more source

Self‐Adhesive Conductive Elastomers for Gel‐Free Biopotential Recording

Advanced Electronic Materials, EarlyView.
σPOMaC, a self‐adhesive conductive citrate elastomer incorporating PEDOT:PSS and DBSA, enables gel‐free biopotential electrodes with stable conductivity and intrinsic skin adhesion. The composite exhibits low resistivity (∼ 0.02 Ω·cm), robust electrical performance during repeated use, and reliable on‐body ECG acquisition comparable to Ag/AgCl ...
Kirstie M. K. Queener, Alec Brewer, He Sun, Jack Twiddy, Vladimir A. Pozdin, Koji Sode, Alper Bozkurt, Michael Daniele   +7 more
wiley   +1 more source

Self-locked optical parametric oscillation in a CMOS compatible microring resonator: a route to robust optical frequency comb generation on a chip [PDF]

, 2013
We report a novel geometry for OPOs based on nonlinear microcavity resonators. This approach relies on a self-locked scheme that enables OPO emission without the need for thermal locking of the pump laser to the microcavity resonance.
Alessia Pasquazi, Benisty, Brent E. Little, Carmon, Coen, Cundiff, Cundiff, David Duchesne, David J. Moss, Del’Haye, Del’Haye, Del’Haye, Del’Haye, Ferdous, Ferdous, Ferrera, Ferrera, Grelu, Grudinin, Haboucha, Herr, Holzwarth, Jiang, Jones, Kippenberg, Lee, Leo, Levy, Luca Razzari, Lucia Caspani, Marcello Ferrera, Marco Peccianti, Matsko, Matsko, Matteo Clerici, Pasquazi, Pasquazi, Peccianti, Razzari, Roberto Morandotti, Sai T. Chu, Savchenkov, Udem, Wang   +43 more
core   +2 more sources

High‐Performance X‐Band Electromagnetic Interference Shielding in Flexible Barium Hexaferrite/Cobalt‐Based Microwires/Silicone Rubber Ternary Composites via Magnetic–Conductive Synergy

Advanced Electronic Materials, EarlyView.
A flexible ternary composite combining barium hexaferrite (BHF), Co–Microwires, and silicone rubber exploits magnetic–conductive synergy to deliver tunable X‐band EMI shielding, reaching a 16.9 dB at 9.8 GHz (surpassing the 10 dB industrial benchmark). Shielding behavior shifts between reflection and absorption with BHF loading and Co–Microwires counts
Moustafa A. Darwish, Marwa Karim, Azim Uddin, Sherif G. Elsharkawy, Mohamed M. Salem   +4 more
wiley   +1 more source

Harmonic suppressed coupled stepped-impedance resonator based dual-band tunable bandpass filter

Engineering Science and Technology, an International Journal, 2017
In this paper, a tunable dual-band bandpass filter (BPF) based on a varactor-loaded coupled stepped-impedance resonator is presented. Transmission matrices techniques are employed to explain the working concept of proposed tunable BPF. For validating the
Amarjit Kumar, Nagendra Prasad Pathak
doaj   +1 more source

Accurate automatic tuning circuit for bipolar integrated filters [PDF]

, 1990
An accurate automatic tuning circuit for tuning the cutoff frequency and Q-factor of high-frequency bipolar filters is presented. The circuit is based on a voltage controlled quadrature oscillator (VCO).
Heij, Wim J.A. de, Hoen, Klaas, Seevinck, Evert   +2 more
core   +1 more source

Harnessing optical micro-combs for microwave photonics

, 2018
In the past decade, optical frequency combs generated by high-Q micro-resonators, or micro-combs, which feature compact device footprints, high energy efficiency, and high-repetition-rates in broad optical bandwidths, have led to a revolution in a wide ...
Chu, Sai Tak, Little, Brent E., Mitchell, Arnan, Morandotti, Roberto, Moss, David J., Moss, DJ (reprint author), Swinburne Univ Technol, Ctr Microphoton, Hawthorn, Vic 3122, Australia., Nguyen, Thach G., Wu, Jiayang, Xu, Xingyuan   +8 more
core   +1 more source

Dual Impact of Long‐Lived Localized Carriers Induced by Restricted Hole Transfer in Organic Photovoltaics and Photocatalytic Hydrogen Evolution

Advanced Energy Materials, EarlyView.
This work clarifies why organic semiconductors perform differently in photovoltaic devices and photocatalytic nanoparticles. By examining D18:Y5 and PM6:Y6 systems, we show how aggregation, exciton lifetime, and interfacial charge transfer behavior govern energy‐conversion pathways.
Gayoung Ham, Sanghyeok An, Wooteak Jung, Hyun Min Kwon, Seonghyeon Kang, Jaehyuk Lee, Sowon Kim, Changwoo Park, Damin Lee, Young Yong Kim, Sungjin Jo, Chang Yun Son, Sae Byeok Jo, Dae Sung Chung, Hyojung Cha   +14 more
wiley   +1 more source

Hybrid Fourier-domain mode-locked laser for ultra-wideband linearly chirped microwave waveform generation

Nature Communications, 2020
Linearly chirped microwave waveforms with high time-bandwidth products would have important applications but are difficult to achieve. Here the authors generate such a waveform in a photonic setting by implementing a micro-disk resonator as a tunable ...
Jian Tang, Beibei Zhu, Weifeng Zhang, Ming Li, Shilong Pan, Jianping Yao   +5 more
doaj   +1 more source

Laser Chimeras as a paradigm for multi-stable patterns in complex systems

, 2014
Chimera is a rich and fascinating class of self-organized solutions developed in high dimensional networks having non-local and symmetry breaking coupling features.
Larger, Laurent, Maistrenko, Yuri, Penkovsky, Bogdan   +2 more
core   +1 more source