Results 161 to 170 of about 3,811,787 (369)

Ultrahigh Conductive MXene Films for Broadband Electromagnetic Interference Shielding

open access: yesAdvanced Materials, EarlyView.
A new series of nitrogen‐substituted MXene films, spanning the full composition range, achieves record‐high conductivity (35 000 S cm⁻¹) and outstanding electromagnetic interference (EMI) shielding across X, Ka, and W bands, even in ultrathin layers.
Ju‐Hyoung Han   +14 more
wiley   +1 more source

Interface Topology Driven Loss Minimization in Integrated Photonics: THz Ultrahigh‐Q Cavities and Waveguides

open access: yesAdvanced Materials, EarlyView.
Compact, robust, and ultralow‐loss on‐chip photonic devices are essential for densely integrated photonic chips. Here, the underlying radiation mechanism in topological valley edge states is unveiled and a new methodology of interface topology driven bandgap and wavevector engineering is proposed to thoroughly suppress their radiation losses, thereby ...
Zhonglei Shen   +6 more
wiley   +1 more source

Importance of the Relative Static Permittivity in electrolyte SAFT-VR Mie Equations of State

open access: yesFluid Phase Equilibria, 2021
Pierre J. Walker   +2 more
semanticscholar   +1 more source

Microwave Radar Imaging of Heterogeneous Breast Tissue Integrating A Priori Information

open access: yesInternational Journal of Biomedical Imaging, 2014
Conventional radar-based image reconstruction techniques fail when they are applied to heterogeneous breast tissue, since the underlying in-breast relative permittivity is unknown or assumed to be constant.
Jochen Moll   +5 more
doaj   +1 more source

Polyelectrolytes as a Stable and Tunable Platform for Triboelectric Nanogenerators

open access: yesAdvanced Materials, EarlyView.
Polyelectrolytes (PEs) are introduced as advanced materials for triboelectric nanogenerators, offering precise control over tribopolarity through selective ion fixation. The tunable triboelectric properties and reliable mechanical and thermal stability of PEs enable enhanced output performance and long‐term reliability, establishing a foundation for ...
Hyeonseo Joo   +7 more
wiley   +1 more source

High‐Performance Phototransistor Based on a 2D Polybenzimidazole Polymer

open access: yesAdvanced Materials, EarlyView.
A crystalline 2D polybenzimidazole polymer (2DPBI), incorporating a porphyrin‐based π‐system linked via 1,3‐diazole units, is synthesized on the water surface over large areas. The 2DPBI thin‐film exhibits high charge carrier mobility (≈240 cm2 V−1 s−1, measured by terahertz spectroscopy), strong photoresponse, and band‐like transport, enabling ...
Anupam Prasoon   +20 more
wiley   +1 more source

Relative permittivity in stern and diffuse layers.

open access: yesActa chimica Slovenica, 2014
Stern layer and outer Helmholtz plane (i.e. the distance of closest approach) are considered within electric double layer models, where the orientational ordering of water dipoles is explicitly taken into account. It is shown that permittivity of the Stern layer is not independent of the surface charge density as it is frequently assumed in different ...
Ekaterina, Gongadze, Aleš, Iglič
openaire   +1 more source

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