Results 51 to 60 of about 3,451 (212)

Ionic Gating of Liquid‐Crystal‐Like Pteridine Assemblies Enables Tunable Light Scattering

Advanced Materials, EarlyView.
Tunable optical properties emerge through developmentally regulated ionic gating, which transforms disordered, ultraviolet (UV)‐absorbing organelles into concentrically ordered, liquid‐crystal‐like light scatterers. By integrating analyses of pteridine composition, potassium‐dependent assembly, hierarchical ultrastructure, and optical behavior, the ...
Sourabh Bera, Zohar Eyal, Yael Noy, Yuval Barzilay, Siddharth Sahoo, Srikant Moharana, Avi Baram, Tali Lerer‐Goldshtein, Neta Varsano, Bar Bader, Lothar Houben, Uwe Heinig, Iddo Pinkas, Moshe Goldsmith, Tamar Unger, Shira Albeck, Andrea Sorrentino, Maxim Itkin, Sergey Malitsky, Ziv Porat, Ido Hadar, Venkata Jayasurya Yallapragada, Dvir Gur   +22 more
wiley   +1 more source

A Small Quad-Band Monopole Antenna with Folded Strip Lines for WiMAX/WLAN and ITU Applications

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this article, a small Quad-Band microstrip patch antenna with folded strip lines for WiMAX/WLAN and ITU Applications is presented. This antenna consists eight symmetrical rectangular folded strip lines with 2 PIN diodes, ground plane and dimensions of
Y. Zehforoosh, M. Rezvani
doaj   +1 more source

The Characteristics of the pin-Structure with a Discrete Metallic Surface i-Region

Известия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Currently, an interest in improving pin-structures continues to be the focus of attention of developers of electronic devices. Devices that use controlled pin-structures include: non-volatile memory, static voltage protection device, pin ...
A. A. Danilenko, A. D. Ivanov, V. L. Ivanov, V. V. Marochkin, M. N. Ivanovich, P. V. Vsevolodovich   +5 more
doaj   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Pattern Reconfigurable Antenna Using Circular Grooved SIW for 5G Millimeter-Wave Communications

IEEE Access
This article presents a novel design of a 360° azimuthal plane pattern reconfigurable antenna (PRA) based on a substrate integrated waveguide (SIW) technique for 5G NR (n258) millimeter-wave (mmWave) applications.
Amitkumar Patel, William G. Whittow, Chinthana J. Panagamuwa   +2 more
doaj   +1 more source

A Low-Profile Pattern Reconfigurable MIMO Antenna

IEEE Access, 2020
A low-profile pattern reconfigurable multiple-input multiple-output (MIMO) antenna is demonstrated in this paper. The antenna element is composed of a rectangular monopole and two sets of parasitic strips loaded with PIN diodes.
Liping Han, Yiwei Ping, Yufeng Liu, Guorui Han, Wenmei Zhang   +4 more
doaj   +1 more source

Soft and Transient Bioelectronics Enabled by Polymer‐Free Ti3C2Tx MXene Hydrogels

Advanced Materials, EarlyView.
We present Ti3C2Tx MXene hydrogel (MXgel) bioelectronics, a soft, flexible, and fully transient platform for high‐fidelity neural recording and stimulation. MXgel bioelectronics exhibit exceptional electrical conductivities, low electrochemical impedances, and high charge injection capacities.
Raghav Garg, Franco A. Laimo, Stefano Ippolito, Prastuti Upadhyay, Spencer R. Averbeck, Dimitris Boufidis, Charles‐Antoine Assenmacher, Dayo O. Adewole, Sai Panigrahy, Bita Soltan Mohammadlou, Lucy Plant, Yuan Zhang, Andrew G. Richardson, Yury Gogotsi, D. Kacy Cullen, Flavia Vitale   +15 more
wiley   +1 more source

A Novel Energy-Selective Surface Endowed with High Shielding Effectiveness by Using a Shape Memory Alloy

Technologies
In this paper, a novel high-shielding-effectiveness energy-selective surface (HSE–ESS) is proposed. In previous solutions regarding energy-selective surfaces (ESSs) presented in the literature, PIN diodes are usually employed as nonlinear transmission ...
Zongze Li, Hang Yuan, Wenxing Li, Danilo Brizi, Agostino Monorchio   +4 more
doaj   +1 more source

Band Alignment of Grafted Si/Ge0.89Sn0.11 Heterojunction Determined by X‐Ray Photoelectron Spectroscopy

Advanced Materials Interfaces, EarlyView.
ABSTRACT We investigate the band alignment of a monocrystalline grafted p‐type Si/Ge0.89Sn0.11 heterostructure using X‐ray photoelectron spectroscopy (XPS). The bandgap of the Ge0.89Sn0.11 epilayer of 0.50 eV was first determined and cross‐verified using photoluminescence spectroscopy, infrared transmission, and theoretical calculation.
Yang Liu, Yiran Li, Tsung‐Han Tsai, Sudip Acharya, Yi Lu, Jie Zhou, Samuel A. Haessly, Shui‐Qing Yu, Nanditha M. Dissanayake, Edward K. Huang, Jiarui Gong, Zhenqiang Ma   +11 more
wiley   +1 more source

Dual-band pattern reconfigurable antenna for wireless MIMO applications

ICT Express, 2016
In this study, a dual-band pattern reconfigurable antenna is proposed for 2.4 and 5.8 GHz wireless multiple-input multiple-output (MIMO) applications.
Jeong Keun Ji
doaj   +1 more source