Results 121 to 130 of about 18,854 (286)

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Tunable defected ground slits for mutual coupling reduction applications

, 2012
Novel tunable slit structures in a ground plane are presented for reducing the electromagnetic coupling between closely spaced monopole antennas. Ultra wideband CPW-fed monopoles are employed in order to demonstrate the tuning range of the slits.
Alexandros P. Feresidis, Feresidis, A.P., Peter S. Hall, Gardner, P., Peter Gardner, Mavridou, M., Hall, P.S., Marina Mavridou   +7 more
core   +1 more source

Hybrid Solar Cell/Triboelectric Nanogenerator Based on Stable Two‐Dimensional Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
This study highlights the integration of stable two‐dimensional covalent organic framework (COF) films as photoactive layers in hybrid nanoenergy devices. The results demonstrate their capacity to generate electricity under both sunny and rainy conditions, showcasing versatility and resilience.
Joab D. Guerrero, Susana Ramos‐Terrón, Salvador R. G. Balestra, José M. Malagón, David Aparicio, Lucia Velasco, Asterios Charisiadis, Dooshaye Moonshiram, Margarita Darder, Pilar Aranda, Bernd Wicklein, Gustavo de Miguel, Javier Pérez‐Carvajal, Eva M. García‐Frutos   +13 more
wiley   +1 more source

HIS-like resonator for mutual coupling reduction in compact arrays

, 2012
International audienceIn this article, HIS-like resonators are proposed for mutual coupling reduction between the elements of a small array. First, a methodology is proposed for the design of HIS-like resonators.
Capet, N., Sokoloff, Jérôme, Pascal, Olivier, Martel, C.   +3 more
core  

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Mutual coupling reduction between closely-packed MIMO PIFA arrays

, 2011
A novel solution for reducing the mutual coupling between two closely packed Planar inverted-F antennas (PIFAs) positioned on a compact ground plane is presented.
Feresidis, A.P., Li, Q.
core  

Controlled Engineering of 2D Alkali‐Iron‐Chloride Compounds and Lateral Quantum Heterostructures Within Confined Graphene Nanoreactors

Advanced Functional Materials, EarlyView.
This work presents a programmable atomic engineering strategy for 2D materials using Å‐scale nanoreactors formed by bilayer graphene (BLG) intercalation. A new class of alkali‐iron‐chloride compounds, along with lateral heterostructures composed of monolayer alkali halides and iron chlorides, is revealed.
Haiming Sun, Qiunan Liu, Yung‐Chang Lin, Mahdi Ghorbani‐Asl, Hiroki Ago, Arkady V. Krasheninnikov, Kazu Suenaga   +6 more
wiley   +1 more source

Mitigating mutual coupling effects on circular polarization for improved bandwidth in MIMO systems: A novel approach

Heliyon
An improved mutual coupling compensation in circularly polarized (CP) multi-input multi-output (MIMO) dielectric resonator antenna (DRA) is presented in this paper.
A. Ali, M.N.M. Yasin, I. Adam, A.M. Ismail, S.P. Jack, Abdullah Alghaihab, N.I.M. Nor, N.A.A. Rahman   +7 more
doaj   +1 more source

Interlayer Expansion of Bulk MoS2 via Top‐Down Organic Pillaring Enables Tunable Li+ Intercalation and Controlled Solvent Co‐Intercalation

Advanced Functional Materials, EarlyView.
Top‐down organic pillaring expands the interlayer spacing of bulk‐sized MoS2 particles while preserving the bulk morphology. Operando X‐ray diffraction and electrochemical dilatometry show that MoS2‐bulk undergoes solvent co‐intercalation in diglyme electrolyte, causing large structural expansion, while pillared, expanded MoS2 suppresses solvent uptake
Jaehoon Choi, Pakornrum Tulaphon, Franz Jacobi, Kyeonghyeon Nam, Jameela Karol, Mete B. Durukan, Christoph Scheurer, Desirée Leistenschneider, Simon Fleischmann   +8 more
wiley   +1 more source

Application of Metamaterial Wall for Mutual Coupling Mitigation of a Dual Differential Fed 2×2 Patch Array Antenna

IEEE Access
An effective technique for mutual coupling mitigation in a $2\times 2$ dual differential fed patch antenna array (DDFPAA) is presented. Metamaterial walls are placed between the radiating elements of an array in the two orthogonal planes of the antenna
Kam Eucharist Kedze, Wenyu Zhou, Nima Javanbakht, George Xiao, Eqab Almajali, Jim S. Wight, Jafar Shaker, Rony E. Amaya   +7 more
doaj   +1 more source