Vélez-Cordero Juan Rodrigo, Pérez Zúñiga Misael Giovani, Hernández-Cordero Juan
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Mexico D.F. 04510, Mexico.
Lab Chip. 2015 Mar 7;15(5):1335-42. doi: 10.1039/c4lc01389a.
We demonstrate an optopneumatic piston based on glass capillaries, a mixture of PDMS-carbon nanopowder, silicone and mineral oil. The fabrication method is based on wire coating techniques and surface tension-driven instabilities, and allows for the assembly of several pistons from a single batch production. By coupling the photothermal response of the PDMS-carbon mixture with optical excitation via an optical fiber, we demonstrate that the piston can work either as a valve or as a reciprocal actuator. The death volume of the pistons was between 0.02 and 1.56 μL and the maximum working frequency was around 1 Hz. Analysis of the motion during the expansion/contraction of the piston shows that this machine can be described by a phenomenological equation analogous to the Kelvin-Voight model used in viscoelasticity, having elastic and viscous components.
我们展示了一种基于玻璃毛细管、聚二甲基硅氧烷 - 碳纳米粉末混合物、硅酮和矿物油的光气动活塞。制造方法基于线涂覆技术和表面张力驱动的不稳定性，并且允许从单批生产中组装多个活塞。通过经由光纤将聚二甲基硅氧烷 - 碳混合物的光热响应与光激发耦合，我们证明该活塞既可以用作阀门，也可以用作往复式致动器。活塞的死体积在0.02至1.56微升之间，最大工作频率约为1赫兹。对活塞膨胀/收缩过程中的运动分析表明，该机器可以用类似于粘弹性中使用的开尔文 - 沃伊特模型的唯象方程来描述，具有弹性和粘性分量。
