Bistable electroactive polymers for refreshable tactile displays
Bistable electroactive polymers for refreshable tactile displays
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用于可刷新触觉显示器的双稳态电活性聚合物
DOI：
10.1117/12.2513780
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Bar-Cohen, Yoseph
中科院分区：
文献类型：
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作者：
Peng, Zihang;Qiu, Yu;Shi, Ye;Zhang, Ziyang;Alwen, Adie;Yin, Hexing;Plamthottam, Roshan;Ren, Zhi;Pei, Qibing;Bar-Cohen, Yoseph
双稳态电活性聚合物（BSEP）联合收割机结合形状记忆与大应变致动在橡胶态，以实现刚性到刚性的驱动。BSEP的刚度可通过玻璃化转变或相变来调节。相变BSEP中聚合物链的可逆熔融-结晶有助于在较窄的温度范围内改变刚度。在3 ℃内可实现1000倍以上的模量变化。此外，在橡胶态下可以获得与VHB丙烯酸弹性体相媲美的大致动应变。关于这种材料的潜在应用的探索已经集中在触觉显示器上。在一种设计中，涂覆在BSEP膜上的蛇形顺应性电极的焦耳加热，与气动压力源耦合，已被用于将具有1.5 mm基部直径的隔膜点升高到高达0.7 mm的高度。由此产生的盲文电子阅读器可以用低电压致动。
Bistable electroactive polymers (BSEP) combine shape memory with large-strain actuation at the rubbery state to achieve rigid-to-rigid actuation. The stiffness of the BSEP is tunable via glass transition or phase changing. The reversible melting-crystallization of the polymer chains in the phase changing BSEP contributes to the stiffness change within a narrow temperature range. A modulus change of more than 1000 folds can be achieved within 3 °C. Additionally, large actuation strains rivaling those of VHB acrylic elastomers can be obtained at the rubbery state. Explorations regarding potential applications of this material have been focused on tactile displays. In one design, Joule heating of a serpentine-shaped compliant electrode coated on a BSEP film, coupled with a pneumatic pressure source has been employed to raise diaphragm dots with 1.5 mm base diameter to heights up to 0.7 mm. The resulting Braille electronic readers could thus be actuated with low voltages.
具有急剧的刚性到橡胶相变的双稳态电活性聚合物
DOI：
--
发表时间：
2016
期刊：
SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring
影响因子：
--
作者：
Yu Qiu;Zhi Ren;Wei Hu;Chao Liu;Q. Pei
通讯作者：
Q. Pei