Results 111 to 120 of about 3,090,742 (298)

Techniques and technology of millimeter-wave systems

Технологія та конструювання в електронній апаратурі, 2003
The paper presents a review and systematization of materials on the techniques and technologies for the production of millimeter-wave systems. It examines microwave engineering elements (lines, transitions, connectors, switches, attenuators, phase ...
V. M. Chmil, K. S. Sunduchkov, I. K. Sunduchkov   +2 more
doaj  

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

3D‐Printed Gradient Shape‐Memory Strain Sensors With Rewritable Gauge Factors

Advanced Functional Materials, EarlyView.
A 3D‐printed shape‐memory strain sensor combines thermomechanical programming with gradient architectural design. Preset strain rewrites the gauge factor (GF), while the gradient geometry amplifies the response through strain redistribution. Reprogrammable sensitivity enables the same sensor to detect weak pulse signals and monitor large‐amplitude ...
Xuan Zhang, Wenjie Qiao, Kaixin Jiang, Sherry Chen, Hanyu Cui, Kirsten Dyer, Xuefeng Zhu, Ting Wang, Xuehua Zhang, Ben Bin Xu, Jie Kong   +10 more
wiley   +1 more source

Efficient Wireless Near-Field Links Between Bessel-Beam Launchers

IEEE Open Journal of Antennas and Propagation
The focused nature of Bessel beams allows for secure and efficient wireless links in the near-field region. Still, at millimeter waves, few studies analyze the transmission efficiency between devices in a systematic way. In addition, present studies only
Luca del Biondo, Edoardo Negri, Mauro Ettorre, Alessandro Galli, Paolo Burghignoli, Walter Fuscaldo   +5 more
doaj   +1 more source

Semiconductor Devices for Millimeter-Wave Repeaters

The Journal of the Institute of Television Engineers of Japan, 1972
主として電電公社通研で行なわれてきたミリメートル波ダイオードの研究結果につき述べた.40～80GHz帯を使用する実用的なミリ波伝送方式に必要とされる送受信周波数変換器, 周波数逓倍器にはGaAsを用いたショットキーバリヤダイオードおよび拡散ダイオードが良好な性能をもって使用されうる見通しがついた.ミリ波直接発振源としてのインパットダイオードについても, 実験室的には漸次方式実験に供しうるものが得られつつある.
openaire   +2 more sources

Millimeter-Wave Reconfigurable CMOS-MEMS Integrated Devices [PDF]

, 2017
The millimeter-wave spectrum has sparked interest recently as a promising alternative to meet bandwidth requirements for wireless local area networks, vehicular radars, short-range multi-Gb/s links, and next-generation cellular system communications (5G).
Kheirabi, Nazli
core  

Role of Structural Disorder on Phonon Transport and Thermal Conductivity in Li6PS5Br

Advanced Functional Materials, EarlyView.
Solid electrolytes are fast ion and slow heat conductors. Although both transport properties are governed by lattice dynamics and atomic structure, their interplay remains poorly understood. Here, we study this interrelation in anion‐ordered and disordered Li6PS5Br.
Lukas Ketter, Ryoma Sasaki, Kyra Strotmann, Wolfgang G. Zeier, Yoshitaka Tateyama   +4 more
wiley   +1 more source

Implementation of extraordinary transmission based devices in millimeter wave bands

, 2011
In this work, the application of Extraordinary Transmission properties is analyzed in order to implement practical devices within the millimeter wave band.
Beruete, Miguel, Miguel Navarro-Cia, Navarro-Cia, Miguel; id_orcid, Miguel Beruete, Mario Sorolla, Illescas, Jesús, Falcone, Francisco, Estévez, Aritz, Sorolla, Mario, Jesus Illescas, Francisco Falcone, Aritz Estevez   +11 more
core   +1 more source

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

Advanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa, Frank Kaulfuß, Stefan Makowski, Volker Weihnacht   +3 more
wiley   +1 more source

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

Advanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon, Ahmad Dibajeh, Gert ten Brink, Majid Ahmadi, Suyang Sun, Wei Zhang, Bart Jan Kooi, George Palasantzas   +7 more
wiley   +1 more source