Results 131 to 140 of about 118,060 (323)

Interpretation of dielectric spectroscopy measurements of ferroelectric nematic liquid crystals

Physical Review Research
The magnitude of the relative permittivity of the ferroelectric nematic phase (N_{F}) has been the subject of lively scientific discussion since the phase was recently discovered.
Vojko Matko, Ewa Gorecka, Damian Pociecha, Joanna Matraszek, Nataša Vaupotič   +4 more
doaj   +1 more source

Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution

Advanced Materials, EarlyView.
Spectral tuning of highly directional hyperbolic shear polaritons is realized via isotopic substitution of 16O to 18O in monoclinic β$\beta$‐phase gallium oxide. A red‐shift of almost 40 cm−1 is experimentally demonstrated with near‐field imaging, corroborated by the permittivity change extracted from far‐field experiments and density functional theory.
Giulia Carini, Mohit Pradhan, Elena Gelžinytė, Andrea Ardenghi, Saurabh Dixit, Maximilian Obst, Aditha S. Senarath, Niclas S. Mueller, Gonzalo Álvarez‐Pérez, Katja Diaz‐Granados, Ryan A. Kowalski, Richarda Niemann, Felix G. Kaps, Jakob Wetzel, Raghunandan Balasubramanyam Iyer, Piero Mazzolini, Mathias Schubert, J. Michael Klopf, Johannes T. Margraf, Oliver Bierwagen, Martin Wolf, Karsten Reuter, Lukas M. Eng, Susanne C. Kehr, Joshua D. Caldwell, Christian Carbogno, Thomas G. Folland, Markus R. Wagner, Alexander Paarmann   +28 more
wiley   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

High‐Performance Air‐Stable Polymer Monolayer Transistors for Monolithic 3D CMOS logics

Advanced Materials, EarlyView.
A fibrillar polymer monolayer with a self‐confinement effect is demonstrated, in which aligned chains parallel the nanofiber axis. Employing a top‐gate CYTOP dielectric, this monolayer transistor achieves high mobility (7.12 cm2 V−1 s−1) and exceptional stability over 1260 days in air.
Miao Cheng, Yanqin Zhang, Jinyao Wang, Haonan Wang, Yifan Xie, Shuaidi Zhang, Changrui Liu, Jingyun Chu, Feng Zhang, Zhenzhong Yang, Zilong Zheng, Mingjian Wu, Ling Li, Mengmeng Li   +13 more
wiley   +1 more source

Using the Probability Density Function-Based Channel-Combination Bloch–Siegert Method Realizes Permittivity Imaging at 3T

Bioengineering
Magnetic resonance electrical properties tomography (MR EPT) can retrieve permittivity from the B1+ magnitude. However, the accuracy of the permittivity measurement using MR EPT is still not ideal due to the low signal-to-noise ratio (SNR) of B1 ...
Jiajia Wang, Yunyu Gao, Sherman Xuegang Xin   +2 more
doaj   +1 more source

Improving Ionic Conformality Across Polymer Electrolyte|Electrode Interfaces

Advanced Materials, EarlyView.
Polymer electrolytes typically form physically intimate electrode interfaces but often fail to maintain continuous ionic pathways, critically limiting battery performance. Through strategic compositional design, this study introduces a molecular ionic composite electrolyte that effectively reduces interfacial ionic depletion, ensuring consistent ion ...
Jungki Min, Nicholas F. Pietra, Callum Connor, Zhaohui Liang, Erin C. Jackson, Lei Tao, Dawei Xia, Xu Feng, Dominik Wierzbicki, Seong‐Min Bak, Robert B. Moore, Louis A. Madsen, Feng Lin   +12 more
wiley   +1 more source

Dielectric Hybrid Optimization Model Based on Crack Damage in Semi-Rigid Base Course

Buildings
To accurately predict the relative permittivity of cement-stabilized base materials, a study on the dielectric mixing model for cracked base materials was conducted.
Zhiyong Huang, Guoyuan Xu, Huayang Yu, Xuetang Xiong, Bo Zang   +4 more
doaj   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

Advanced Materials, EarlyView.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz, Elangovan Hemaprabha, Rajesh Mandal, Pravin Kavle, Jamil Tanus, Maya Barzilay, Ching‐Che Lin, David Spirito, Semën Gorfman, Bo Wang, Ignacio J. Villar‐García, Neus Domingo, Long‐Qing Chen, Lane W. Martin, Yachin Ivry   +14 more
wiley   +1 more source

Constraining snow water equivalent of wet snowpacks in Southeast Alaska

Annals of Glaciology
Quantifying snow water equivalent (SWE) with ground-penetrating radar (GPR) in a warming climate is complicated by the incidence and variability of liquid water in snow.
Mikaila A. Mannello, Scott Braddock, Seth W. Campbell, Emma Skelton, Kristin M. Schild, Christopher McNeil   +5 more
doaj   +1 more source

Ultralow‐Frequency Epsilon‐Near‐Zero States in 3D‐Printed High‐Entropy Alloy Metacomposites for Ultra‐Thin Perfect RF Absorption

Advanced Materials, EarlyView.
Rozanov causality limit—a compulsive proportional thickness‐wavelength relationship (nd ∝ λ)—makes it challenging to develop perfect absorption with both thin thickness and low frequency. Herein, a cocktail effect in high‐entropy alloys (HEA) is crucially utilized for lowering plasma frequency to achieve epsilon‐near‐zero states, which finally enables ...
Peitao Xie, Haikun Wu, Zhenxiang Cheng, Mingxiang Liu, Yuan Liu, Weikong Pang, Runhua Fan, Yao Liu   +7 more
wiley   +1 more source