Results 81 to 90 of about 287,449 (377)

Peculiarities of the interface between high-permittivity dielectrics and semiconductors

Frontiers in Materials, 2014
Replacement of the silicon dioxide thin films in metal-oxide-semiconductor structures for microelectronics with high permittivity dielectrics (high-k) is a crucial step in the further down-scaling of microelectronic devices.
Nenad eNovkovski
doaj   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

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

Ionic Transportation and Dielectric Properties of YF₃:Eu³⁺ Nanocrystals

Nanomaterials, 2018
The ionic transportation and dielectric properties of YF3:Eu3+ nanocrystals are investigated by AC impedance spectroscopy. The ion diffusion coefficient and conductivity increase along with the doping concentration and reach their highest values at 4% of
Xiaoyan Cui, Tingjing Hu, Jingshu Wang, Junkai Zhang, Xin Zhong, Yanli Chen, Xuefei Li, Jinghai Yang, Chunxiao Gao   +8 more
doaj   +1 more source

Investigating Experimental Short Term Imprint Dynamics in Ferroelectric Hafnium Oxide Through Phase‐Field Modeling

Advanced Functional Materials, EarlyView.
Phase‐field modeling reveals the mechanisms behind short‐term ferroelectric imprint in Hf0.5Zr0.5O2 polycrystalline thin films. Combined with a charge trapping model, the proposed framework accurately reproduces coercive field shifts with pause time and their recovery through field cycling in polarization‐voltage measurements, offering valuable ...
Kévin Alhada‐Lahbabi, Benoit Manchon, Grégoire Magagnin, Chiara Lepri, Sara Gonzalez, Ingrid Cañero Infante, Martine Le Berre, Bertrand Vilquin, Jordan Bouaziz, Brice Gautier, Damien Deleruyelle   +10 more
wiley   +1 more source

Onsager model for a variable dielectric permittivity near an interface

, 2003
Using a generalisation of an Onsager type approach, we are able to predict a dielectric permittivity profile of an inhomogeneous dipolar fluid in the presence of a dielectric interface.
Ballenegger, Vincent, Finken, Reimar, Hansen, Jean-Pierre   +2 more
core   +1 more source

Accurate Permittivity Measurements for Microwave Imaging via Ultra-Wideband Removal of Spurious Reflectors

Sensors, 2010
The use of microwave imaging is becoming more prevalent for detection of interior hidden defects in manufactured and packaged materials. In applications for detection of hidden moisture, microwave tomography can be used to image the material and then ...
Mathew G. Pelletier, Joseph A. Viera, John Wanjura, Greg Holt   +3 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

Electron Compensation Enhanced Triboelectric Sensor Assisted by Machine Learning for Tactile Perception Recognition

Advanced Functional Materials, EarlyView.
Integrating polyethyleneimine and carbon black into polyurethane enhances electron transport and mechanical durability. The resulting sensor achieves significantly improved electrical signal and sensitivity, enabling efficient machine learning‐based tactile signal recognition in bionic applications.
Xiangkun Bo, Wei Wang, Hong Zhao, Ruiqin Zhang, Walid A. Daoud   +4 more
wiley   +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