Results 41 to 50 of about 2,123,471 (302)

Multi-mode coupling wave theory for helically corrugated waveguide [PDF]

, 2012
Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse compressor.
Ronald K, Donaldson CR, He, Wenlong, Young, Alan R., Whyte, Colin G., Robertson, Craig W., Phelps ADR, Phelps, Alan D. R., Zhang L, Ronald, Kevin, Craig R. Donaldson, Kevin Ronald, Whyte CG, Young AR, Liang Zhang, Cross AW, Zhang, Liang, Donaldson, Craig R., Colin G. Whyte, Adrian W. Cross, Alan R. Young, He W, Robertson CW, Craig W. Robertson, Cross, Adrian W., Wenlong He, Alan D. R. Phelps   +26 more
core   +1 more source

A Brief Review on the Development Progress of High-Efficiency Klystrons

IEEE Access
The linear beam ‘O’ type klystrons that feature very high output power (greater than several MW) with an efficiency level of 90% are considered in this study.
Soumaya Mandal, Ayan Kumar Bandyopadhyay, Chaitali Koley, Debasish Pal, Taha Selim Ustun, Ahmet Onen   +5 more
doaj   +1 more source

APTES‐Mediated Ti‐Squarate MOF/n‐GaN Nanowire Photoanodes for Efficient Photoelectrochemical Water Splitting

Advanced Functional Materials, EarlyView.
The APTES linker establishes a permanent interfacial dipole, reducing the work function of n‐GaN from 3.55 to 3.29 eV. This strengthens the built‐in electric field, significantly accelerating hole extraction to drive the oxygen evolution reaction (OER). Ultimately, this tailored charge‐separation architecture achieves a remarkable 4.78‐fold enhancement
Jeong‐Kyun Oh, Sergio Carrasco, Sooyeon Ra, Seok‐Ho Seo, Chandran Bagavath, Sung‐Un Kim, Min‐Seok Lee, Jong‐Su Kim, Miriam Vos‐Gracia, Dan Na, Kyung‐Hwan Jin, Sangmin An, Dong Ick Son, Cheul‐Ro Lee, Patricia Horcajada, Yong‐Ho Ra   +15 more
wiley   +1 more source

Smart Modeling of Microwave Devices

IEEE Microwave Magazine, 2010
Modeling and computer-aided design (CAD) techniques are essential for microwave design, especially with the drive towards first-pass design success. We have described neural networks for microwave modeling and design. Neural networks are suitable when modeling a required relationship for which analytical formulas are hard to derive, or for which the ...
Kabir, H, Zhang, Q-J, Yu, M, Zhang, L, Aaen, PH, Wood, J   +5 more
openaire   +3 more sources

Hong–Ou–Mandel interferometry and quantum metrology with multimode frequency-bin entangled photons

APL Photonics
Quantum entanglement is a vital resource in quantum information processing. High-dimensional quantum entanglement offers advantages that classical systems cannot surpass, particularly in enhancing channel capacity, improving system noise resilience, and ...
Xu Jing, Linjie Fan, Xiaodong Zheng, Tangsheng Chen, Yuechan Kong, Bin Niu, Liangliang Lu   +6 more
doaj   +1 more source

Current Trends in the Development of Microwave Reactors for the Synthesis of Nanomaterials in Laboratories and Industries: A Review

Crystals, 2018
Microwave energy has been in use for many applications for more than 50 years, from communication, food processing, and wood drying to chemical reactions and medical therapy.
Sylwia Dąbrowska, Tadeusz Chudoba, Jacek Wojnarowicz, Witold Łojkowski   +3 more
doaj   +1 more source

Exceptional Electro‐Optic Coefficient Unlocked via Polarization Swaying in KNbO3 Thin Films

Advanced Functional Materials, EarlyView.
We present the largest reported electro‐optic response in any material to date, guided by a new design principle that exploits ultralow coercive field polarization swaying enabled by low‐symmetry ferroelectric phases in monoclinic KNbO3 thin films for energy‐efficient classical and quantum photonic integrated circuits. ABSTRACT The electro‐optic effect
Sankalpa Hazra, Aiden Ross, Brynn Brower, Tobias Schwaigert, Ian Reed Philippi, Albert Suceava, Himirkanti Sarkar, Muhammed Aminul Haque Chowdhury, Suchismita Sarker, Darrell G. Schlom, Long‐Qing Chen, Venkatraman Gopalan   +11 more
wiley   +1 more source

Scalable Fabrication of Thermally Reconfigurable Ge Metasurfaces Using Stencil Lithography for Mid‐Infrared Molecular Fingerprinting

Advanced Functional Materials, EarlyView.
Scalable stencil lithography enables resist‐free fabrication of high‐index Ge metasurfaces for mid‐infrared molecular fingerprinting. Reversible thermo‐optic tuning provides post‐fabrication spectral control for precise resonance–vibration mode alignment, enabling enhanced molecular fingerprinting of microplastic particles.
Shovasis Kumar Biswas, Samir Rosas, Wihan Adi, Aidana Beisenova, Vaishakh Unnikrishnan, Furkan Kuruoglu, Filiz Yesilkoy   +6 more
wiley   +1 more source

Microfluidic Engineering of Microgels: A Review of Emerging Technologies, Materials, Fabrication Strategies, and Applications

Advanced Healthcare Materials, EarlyView.
Recent advances in microfluidic technologies for microgel fabrication are critically reviewed, highlighting the capabilities and limitations of major microfluidic platforms and discussing how platform design, material selection, and crosslinking strategies influence microgel architecture and functionality. Current challenges and future opportunities in
Afshin Abrishamkar, Laura Neely, Cynthia Pham, Nada Ibrahim, Alexis Larios‐Cervantes, Ben A. Kertesz, Todd Hoare   +6 more
wiley   +1 more source

Near-field measurement of microwave active devices [PDF]

, 2000
A completely new near field mapping system based on micro monopole antenna has been developed in order to determine the electric near-field at the surface of MMIC.
Castagné, M., Nativel, L., Dhondt, F., Gasquet, D., Mazari, B., Arcambal, C., Eudeline, P.   +6 more
core   +1 more source