Results 151 to 160 of about 836 (216)

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

Advanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora, Seung Ju Choi, Jaeki Jeong, Silvia Orecchio, Inés García‐Benito, Manuel Pérez‐Escribano, Joaquín Calbo, Likai Zheng, Minseop Byun, Seyeong Song, Gi‐Hwan Kim, Shaik M. Zakeeruddin, Seog‐Young Yoon, Yimhyun Jo, Agustín Molina‐Ontoria, Enrique Ortí, Nazario Martín, Michael Grätzel   +17 more
wiley   +1 more source

Strain Engineering of Magnetoresistance and Magnetic Anisotropy in CrSBr

Advanced Materials, EarlyView.
Biaxial compressive strain significantly enhances magnetoresistance and critical saturation fields in thin flakes of the 2D magnet CrSBr, along all three crystallographic axes. First‐principles calculations link these effects to strain‐induced increases in exchange interactions and magnetic anisotropy.
Eudomar Henríquez‐Guerra, Alberto M. Ruiz, Marta Galbiati, Álvaro Cortés‐Flores, Daniel Brown, Esteban Zamora‐Amo, Lisa Almonte, Andrei Shumilin, Juan Salvador‐Sánchez, Ana Pérez‐Rodríguez, Iñaki Orue, Andrés Cantarero, Andres Castellanos‐Gomez, Federico Mompeán, Mar Garcia‐Hernandez, Efrén Navarro‐Moratalla, Enrique Diez, Mario Amado, José J. Baldoví, M. Reyes Calvo   +19 more
wiley   +1 more source

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The Planar Parabolic Optical Antenna

Nano Letters, 2012
One of the simplest and most common structures used for directing light in macroscale applications is the parabolic reflector. Parabolic reflectors are ubiquitous in many technologies, from satellite dishes to hand-held flashlights. Today, there is a growing interest in the use of ultracompact metallic structures for manipulating light on the ...
David T, Schoen, Toon, Coenen, F Javier, García de Abajo, Mark L, Brongersma, Albert, Polman   +4 more
openaire   +2 more sources

The planar lateral wave antenna

Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012
A novel planar lateral wave antenna concept that promises impedance matching over factor a one to three bandwidth, very high efficiency, and high directivity in one plane in presented. The structure realizes a planar elliptical dielectric lens antenna for focusing the beams in the H-plane.
Tokan, Fikret, Türker Tokan, Nurhan, Neto, Andrea   +2 more
openaire   +2 more sources

Spiral Planar Antenna for MIMO

2018 IEEE 7th Global Conference on Consumer Electronics (GCCE), 2018
A high gain spiral planar antenna for the multiple-input and multiple-output (MIMO) is proposed and fabricated in the frequency band of 2.4GHz. Its maximum and average gains are higher than those of the commercialized antenna. Two fabricated antennas are put adjacent to the same and reverse direction, and MIMO antennas are composed.
Reito Arasawa, Koichi Karasawa, Kazuki Ashida, Takahisa Karakama, Tutomu Kaneko   +4 more
openaire   +1 more source

Ultrawideband planar antennas and antenna arrays

2012 6th International Conference on Ultrawideband and Ultrashort Impulse Signals, 2012
The paper presents analysis of signals and planar monopole pulse antennas and antenna arrays designed for work in ultrawideband (UWB) frequency band 3.1–10.6GHz. A complex approach to design, synthesis and optimization of UWB antennas is proposed. Frequency and time characteristics of UWB signals, designed single and two-element antennas, results of ...
openaire   +1 more source

Printed and Planar Antennas

2016
Many applications of RF systems impose severe space constraints on the design of the antenna. Military aircraft, satellites, guided missiles, and mobile broadband systems (to name but a few) need low-profile antennas that effortlessly integrate into a mechanical structure.
Jaco du Preez, Saurabh Sinha
openaire   +1 more source

Flexible Planar Antenna for QZSS

2022 IEEE 11th Global Conference on Consumer Electronics (GCCE), 2022
Rintaro Yamaguchi, Akihiro Komiyama, Koichi Yamada, Koichi Karasawa, Kazuki Ashida, Takahisa Karakama, Tutomu Kaneko   +6 more
openaire   +1 more source