Electroactive polymer-based spatial light modulator with high reliability and fast response speed

2011 ◽  
Vol 50 (12) ◽  
pp. 124001 ◽  
Author(s):  
Guangmin Ouyang
Keyword(s):  
Spatial Light Modulator ◽  
High Reliability ◽  
Response Speed ◽  
Fast Response ◽  
Electroactive Polymer ◽  
Light Modulator

Design and Simulation of Direct Drive Volume Control Actuator

2012 ◽  
Vol 155-156 ◽  
pp. 162-166
Author(s):  
Yang Yu ◽  
Bo Qiang Shi
Keyword(s):  
High Reliability ◽  
Low Frequency ◽  
Response Speed ◽  
Fast Response ◽  
Volume Control ◽  
Direct Drive ◽  
Hydraulic Actuator ◽  
High Control ◽  
Valve Control ◽  
Control Accuracy

The electro-hydraulic actuator which was designed based on the technology of the direct drive volume control, has the advantages of small volume, high reliability, energy saving and so on, and can effectively overcome the deficiency of traditional valve control electro-hydraulic actuator. This paper realizes co-simulation of direct drive volume control actuator (DDVCA) by using AMESim and Matlab/Simulink. The simulation results show that DDVCA has the characteristics of smooth operation, fast response speed, high control accuracy. Therefore, DDVCA can replace traditional servo valve electro-hydraulic actuator in the case of low frequency response requirement.

Development of an Over-Temperature Supervising System of Switch Cabinet Based on Gas Sensing Technology

2019 ◽  
Vol 20 (2) ◽  
Author(s):  
Jian Le ◽  
Qian Zhou ◽  
Cao Wang ◽  
Zhi-chun Yang ◽  
Hao Zhang
Keyword(s):  
Field Experiments ◽  
Gas Sensing ◽  
High Reliability ◽  
Low Cost ◽  
Special Kind ◽  
Response Speed ◽  
Fast Response ◽  
Storage Unit ◽  
Sensing Technology ◽  
Temperature State

Abstract Existing over-temperature supervising (OTS) systems available for switch cabinet, even those based on advanced optical fiber sensing technology, are unable to satisfy the critical requirements such as reliability, safety, practicability and economy simultaneously. In this paper, a novel OTS scheme that take a special kind of gas to carry the signal indicating the over-temperature state of a switch cabinet is developed elaborately. Serving for the CO2 gas which has comprehensive and overwhelming superiorities in situation of OTS, a gas storage unit that is composed of a hard plastic crust and an inner tubular airbag, a gas releasing mechanism that consists of bimetallic and acupuncture, and a gas sensing terminal are designed artfully. The overall OTS system is finally developed by integrating these three parts with a background server via wireless communication technology. The advantages of the proposed system, such as high reliability and safety, fast response speed and universal applicability have been proven by lab tests and field experiments. Moreover, the inherent low cost and easy installation and maintenance features of our scheme facilitate the development of OTS systems for other electrical devices in power system.

scholarly journals Fast-Response Liquid Crystal for Spatial Light Modulator and LiDAR Applications

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 93
Author(s):  
Junyu Zou ◽  
Qian Yang ◽  
En-Lin Hsiang ◽  
Haruki Ooishi ◽  
Zhuo Yang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Spatial Light Modulator ◽  
Fast Response ◽  
Blue Laser ◽  
Dielectric Anisotropy ◽  
Light Modulator ◽  
High Brightness ◽  
High Birefringence ◽  
Low Viscosity ◽  
Liquid Crystal On Silicon

We report a new nematic mixture for liquid-crystal-on-silicon spatial light modulator (SLM) and light detection and ranging (LiDAR) applications. The mixture exhibits a relatively high birefringence (Δn), moderate dielectric anisotropy (Δɛ), low viscosity, and reasonably good photostability. To achieve 2π phase change at 5 V, the response time (on + off) is 2.5 ms at 40 °C with λ = 633 nm, and 5.9 ms with λ = 905 nm. After exposure by a blue laser (λ = 465 nm) with a total dosage up to 20 MJ/cm2, this mixture shows no sign of photodegradation. Widespread applications of this material for high brightness SLMs, LiDAR, near-eye displays, and head-up displays are foreseeable.

55.3: A Low-Voltage and Fast-Response Infrared Spatial Light Modulator

2015 ◽  
Vol 46 (1) ◽  
pp. 831-834
Author(s):  
Fenglin Peng ◽  
Daming Xu ◽  
Haiwei Chen ◽  
Shin-Tson Wu
Keyword(s):  
Spatial Light Modulator ◽  
Low Voltage ◽  
Fast Response ◽  
Light Modulator

Optimization of PDMS network for a fast response and sensitive actuation material applied in a MEMS spatial light modulator

2011 ◽  
Vol 103 (2) ◽  
pp. 381-388 ◽  
Author(s):  
G. Ouyang ◽  
K. Wang ◽  
M. N. Akram ◽  
L. Henriksen ◽  
X. Y. Chen
Keyword(s):  
Spatial Light Modulator ◽  
Fast Response ◽  
Light Modulator

scholarly journals Shape Memory Alloy(SMA) Actuated Microfluidic Colour-Changing System

2020 ◽  
Vol 38 (2) ◽  
pp. 377-383
Author(s):  
Min Zhang ◽  
Songjing Li
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Reliability ◽  
Response Speed ◽  
Fast Response ◽  
Microfluidic System ◽  
Present System ◽  
Experimental Conditions ◽  
Output Displacement ◽  
Sma Spring

In order to improve the performances of microfluidic actuators, a microfluidic actuating way based on the shape memory alloy(SMA) is presented, which is applied for the liquids circulation of a microfluidic colour-changing system. A SMA spring is used as the main actuating part, a microfluidic actuating device based on the SMA spring is designed and fabricated. The models for the SMA spring and the whole SMA actuated microfluidic system are established, the experimental platform is built. The temperature properties, output displacement performances and pressure responses of the present system are simulated and tested under different experimental conditions. Comparing with traditional microfluidic actuating systems, the SMA actuated microfluidic colour-changing system is driven by using DC power, small in size, convenient in operation, and has fast response speed and high reliability.

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