Results 71 to 80 of about 194,102 (294)

Imaging of Microwave Permittivity, Tunability, and Damage Recovery in (Ba,Sr)TiO3 Thin Films

, 1999
We describe the use of a near-field scanning microwave microscope to quantitatively image the dielectric permittivity and tunability of thin-film dielectric samples on a length scale of 1 micron. We demonstrate this technique with permittivity images and
Anlage, Steven M., Canedy, C., Melngailis, J., Ramesh, R., Stanishevsky, A., Steinhauer, D. E., Vlahacos, C. P., Wellstood, F. C.   +7 more
core   +1 more source

Asymmetric Contact Engineering for Bottleneck‐Free Transport in 2D MoS2 Field‐Effect Transistor

Advanced Functional Materials, EarlyView.
Performance of 2D semiconductor transistors is limited by carrier transport bottlenecks arising from specific device geometries. By identifying this structural limitation, a bottleneck‐free asymmetric transistor architecture (BATA) is introduced to improve carrier transport.
Jinhyeok Pyo, Junsung Byeon, Jungmoon Lim, Sohyeon Park, Sungsan Kang, Byeongchan Kim, Gyuhwi Jeong, Haerim Kim, Bongjun Kim, SeungNam Cha, Sangyeon Pak   +10 more
wiley   +1 more source

Electrophysical properties of the Rochelle salt dispersed in a porous dielectric matrix of type A zeolite

Physics of Complex Systems
Electrical conductivity, real part of dielectric permittivity and dielectric losses of a novel nanocomposite material obtained by the infiltration of a NaA zeolite matrix with Rochelle salt were studied in the frequency range from 100 Hz to 100 kHz.
Тамара Геннадьевна Матвеева, Марина Семеновна Иванова, Владимир Гаевич Соловьев, Александр Иванович Ванин   +3 more
doaj   +1 more source

The Effect on Wireless Sensor Communication When Deployed in Biomass

Sensors, 2011
Wireless sensor networks (WSN) have been studied in a variety of scenarios over recent years, but work has almost exclusively been done using air as the transmission media.
Thomas Skjødeberg Toftegaard, Ole Green, Esmaeil S. Nadimi, Jakob Juul Larsen   +3 more
doaj   +1 more source

Generalized plasma-like permittivity and thermal Casimir force between real metals

, 2007
The physical reasons why the Drude dielectric function is not compatible with the Lifshitz formula, as opposed to the generalized plasma-like permittivity, are presented. Essentially, the problem is connected with the finite size of metal plates.
Ashcroft N W, B Geyer, Bezerra V B, Bimonte G, Casimir H B G, Chen F, Elizalde E, Erdélyi A, G L Klimchitskaya, Geyer B, Gradshtein I A, Høye J S, Jackson J D, Klimchitskaya G L, Klimchitskaya G L, Lamoreaux S K, Landau L D, Lifshitz E M, Milonni P W, Milton K A, Milton K A, Mostepanenko V M, Mostepanenko V M, Parsegian V A, V M Mostepanenko   +24 more
core   +1 more source

Localized High‐Concentration Electrolyte with Water‐Miscible Diluent Enables Stable Zinc Deposition and Long‐Life Aqueous Zinc Metal Batteries

Advanced Functional Materials, EarlyView.
A diisopropyl ether (DIPE)‐based, localized, high‐concentration electrolyte is developed to stabilize both electrodes in aqueous zinc batteries. By reducing water activity and promoting anion‐rich zinc‐ion solvation, it builds robust interphases at both the cathode and anode, ensuring uniform deposition, suppressed corrosion, and highly reversible ...
Yuxuan Wu, Ziwei Zhao, Yue Fei, Hao Zhang, Ge Li   +4 more
wiley   +1 more source

Susceptibility to Translational Landslides in Ecuador Caused by Changes in Electrical Permittivity of Andepts Soils Using Software-Defined Radar for Detection

Earth
Landslides are widespread and global geological disasters, affecting millions of people and causing numerous deaths each year. Despite technological advances, it is still difficult to accurately prevent landslides.
Diego Veloz-Cherrez, Marcelo Ojeda, David Moreno, Johanna Del Pozo   +3 more
doaj   +1 more source

EM-Wave Biosensors: A Review of RF, Microwave, mm-Wave and Optical Sensing

Sensors, 2019
This article presents a broad review on optical, radio-frequency (RF), microwave (MW), millimeter wave (mmW) and terahertz (THz) biosensors. Biomatter-wave interaction modalities are considered over a wide range of frequencies and applications such as ...
Parikha Mehrotra, Baibhab Chatterjee, Shreyas Sen   +2 more
doaj   +1 more source

permittivity

, 2014
Citation: 'permittivity' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04507 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Selective Separation of the Rare Earth Elements Dysprosium and Neodymium via Tailoring Nanocellulose Chemical Structure

Advanced Functional Materials, EarlyView.
Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani, Shang‐Lin Yeh, Karuna Anna Sajeevan, Mica L. Pitcher, Dawson Alexander, Ratul Chowdhury, Amir Sheikhi   +6 more
wiley   +1 more source