Results 151 to 160 of about 6,138 (262)

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Multi-band circularly polarized patch antenna with CPW feed based on sunflower geometry and Gielis superformula for wireless communication. [PDF]

Sci Rep
Joshi K, Soni GK, Yadav D.
europepmc   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Contactless Microwave-Based Estimation of Complex Permittivity of Masonry Materials: A Frequency-Domain Approach. [PDF]

Sensors (Basel)
Szczepaniak Z, Juszczyński P, Susek W, Tabiś K, Suchorab Z.   +4 more
europepmc   +1 more source

Engineering a Correlated Narrow‐Gap Semiconductor: Effects of Ga Substitution in EuZn2P2

Advanced Electronic Materials, EarlyView.
ABSTRACT The effect of Ga substitution on the electronic, magnetic, and low‐energy responses of the Zintl phase EuZn2P2${\rm EuZn}_2 {\rm P}_2$ is investigated by electrical transport, electron spin resonance (ESR), and terahertz time‐domain spectroscopy (THz‐TDS). Incorporating Ga into EuZn2P2${\rm EuZn}_2 {\rm P}_2$ (EuZn1.8Ga0.2P2${\rm EuZn}_{1.8} {\
Mateus Dutra, Esteban Marulanda, Gustavo G. Vasques, Jaime Ferreira Oliveira, Pedro C. Sabino, Rebeca Brigato Delgado, Leticie Mendonça‐Fereira, Adriano R. V. Benvenho, Elisa Baggio‐Saitovitch, Ricardo K. Machado, Nicolas M. Kawahala, Julian Munevar, Marcos A. Avila, Felix G. G. Hernandez   +13 more
wiley   +1 more source

A near zero refractive indexed non-uniform metasurface for broadband RCS reduction of an antipodal Vivaldi antenna. [PDF]

Sci Rep
Das P, Kundu S, Kumar R.
europepmc   +1 more source

Local Order Is Not Enough: Synthetically Accessible Polymers Reveal the Role of Side‐chain Branching Point in Organic Solar Cell and Transistor Performance

Advanced Electronic Materials, EarlyView.
Systematic variation of the side‐chain branching point in a series of donor polymers reveals that moving the branch further from the backbone improves local crystal quality but reduces the overall degree of crystallinity, leading to progressively worse organic solar cell and transistor performance.
Martina Rimmele, Xabier Rodríguez‐Martínez, Zhuoran Qiao, Kaiyang Wei, Adam V. Marsh, Julianna Panidi, Nicola Gasparini, Jaime Martin, Martin Heeney   +8 more
wiley   +1 more source

Broadband Infrared Absorption Features of Metasurfaces Constructed with a Titanium-Dielectric-Titanium Array Architecture. [PDF]

Nanomaterials (Basel)
Zhang C, Hu J, Chen H, Shao X, Yao X, You F, Wang H, Zhang X.   +7 more
europepmc   +1 more source

High‐Responsivity and Fast‐Response Organic Phototransistor Based on Dinaphtho[2,3‐b:2′,3′‐f]Thieno[3,2‐b]Thiophene

Advanced Electronic Materials, EarlyView.
Low‐temperature Al/Al2O3/DNTT/Au organic phototransistors fabricated on flexible PEN combine high responsivity to blue light (≈250 A W−1 at 39 nW cm−2) with detectable modulated photoresponse up to 150 kHz, making them promising for ultra‐low‐light sensing and moderate‐speed optical links.
Antonio Caldarelli, Antonio Vettoliere, Paolo Scotto Di Vettimo, Marcello Campajola, Gino Giusi, Vincenzo Izzo, Alberto Aloisio, Ettore Sarnelli   +7 more
wiley   +1 more source

Compact and low mutual coupling 4 × 4 wideband MIMO antenna design for 5G millimeter-wave applications. [PDF]

Sci Rep
Edries M, Mohamed HA, Elsheakh DN, Hekal S.   +3 more
europepmc   +1 more source