Simulation of a Sensitive Element of a Sandwich Structure of a Capacitive Micromechanical Accelerometer Based on the Dielectric Constant Changes

2020 ◽  
Vol 25 (2) ◽  
pp. 155-166
Author(s):  
Ye Ko Ko Aung ◽  
◽  
B.M. Simonov ◽  
S.P. Timoshenkov ◽  
◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Sensitive Element ◽  
Sandwich Structure ◽  
Micromechanical Accelerometer

Enhanced performance of supercapacitors by constructing a “mini parallel-plate capacitor” in an electrode with high dielectric constant materials

2020 ◽  
Vol 8 (32) ◽  
pp. 16661-16668
Author(s):  
Huayao Tu ◽  
Shouzhi Wang ◽  
Hehe Jiang ◽  
Zhenyan Liang ◽  
Dong Shi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Carbon Fiber ◽  
Parallel Plate ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Parallel Plate Capacitor ◽  
Plate Capacitor ◽  
Fiber Metal ◽  
High Dielectric ◽  
Mini Plate

The carbon fiber/metal oxide/metal oxynitride layer sandwich structure is constructed in the electrode to form a mini-plate capacitor. High dielectric constant metal oxides act as dielectric to increase their capacitance.

Parameters of Sensitive Element of Capacitive Micromechanical Accelerometer with Sandwich Construction

2019 ◽  
Vol 24 (3) ◽  
pp. 257-266 ◽  
Author(s):  
Ye Ko Ko Aung ◽  
◽  
Aung Thura ◽  
Boris M. Simonov ◽  
Sergey P. Timoshenkov ◽  
...  
Keyword(s):  
Sensitive Element ◽  
Sandwich Construction ◽  
Micromechanical Accelerometer

Ferroelectric and Optical Properties of BST/BZT/BST Sandwich Structure Thin Films Prepared by RF Sputtering

2012 ◽  
Vol 164 ◽  
pp. 47-51 ◽  
Author(s):  
Cai Bing Ma ◽  
Xin Gui Tang ◽  
De Ping Xiong ◽  
Yan Ping Jiang ◽  
Qiu Xiang Liu
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Optical Properties ◽  
Sandwich Structure ◽  
Rf Sputtering ◽  
Dissipation Factor ◽  
Cross Sectional ◽  
Lower Dielectric Constant ◽  
Bst Thin Film ◽  
Ceramic Targets

In this work, (Ba0.65Sr0.35)TiO3 (BST) and Ba(Zr0.20Ti0.80)O3 (BZT) ceramic targets were prepared using the traditional solid-state reaction technique, which were sintered at 1200 °C for 2 h. The thin films of BST, BZT and sandwich structure BST/BZT/BST were grown on Pt/Ti/SiO2/Si(100) and Si(100) substrates by rf-sputtering at 500 °C, respectively. And all samples crystallied at temperatures 650 °C for 30 min in oxygen atmosphere. The cross-sectional images of the thin films were characterized by scanning electron microscope (SEM). The dielectric constant and dissipation factor tan of the BZT, BST and BST/BZT/BST thin films are 680 and 0.030, 240 and 0.021, 85 and 0.018, respectively at 100 kHz. Compared with BST and BZT films, the BST/BZT/BST film has lower dielectric constant and lower dissipation. The remanent polarization (Pr) of the sandwich structure BST/BZT/BST thin film is up to 9.57 μC/cm2, the Pr value is larger than that BST (0.25μC/cm2) film and BZT (8.45μC/cm2) film. The optical properties (refractive index n and extinction coefficient k) of the BST/BZT/BST film on Si(100) substrate were measured by n & k analyzer 2000.

Optimal Design for Ceramic Radomes with A-Sandwich Structure

2009 ◽  
Vol 66 ◽  
pp. 29-32 ◽  
Author(s):  
Qi Wen Liu ◽  
Fei Chen ◽  
Qiang Shen ◽  
Lian Meng Zhang
Keyword(s):  
Dielectric Constant ◽  
Computer Aided Design ◽  
Sandwich Structure ◽  
Power Transmission ◽  
Core Layer ◽  
Transmission Efficiency ◽  
Calculation Model ◽  
Wall Structure ◽  
Calculation Results ◽  
Aided Design

The radome performance is evaluated by means of a computer aided design (CAD) for the wall structure of multilayer ceramic radome in accordance with the microwave propagation theory. The calculation model for the ceramic radome with A-sandwich structure is built. By optimizing the thickness of the whole wall and the thickness and dielectric constant of skins and core layer, the power transmission efficiency at a broadband frequency of A-sandwich structure ceramic radome is calculated especially. The calculation results suggest that when the wall thickness is 6 mm, the thickness ratio of surface layer to core layer is 1:15 and dielectric constant of core layer is less than 2.5, the maximal broadband transmission efficiency is obtained.

High dielectric constant and energy density achieved in sandwich-structured SrTiO3 nanocomposite thick films by interface modulation

2019 ◽  
Vol 7 (3) ◽  
pp. 673-681 ◽  
Author(s):  
Shengqiang Xiao ◽  
Wenbin Gao ◽  
Manwen Yao ◽  
Zhen Su ◽  
Xi Yao
Keyword(s):  
Dielectric Constant ◽  
Energy Density ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Thick Films ◽  
High Dielectric ◽  
Interface Modulation

The design of a sandwich structure is conducive to enhancing the dielectric constant and energy density of SrTiO3 nanocomposite thick films.

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