Takasaki Yuichi, Takamizawa Satoshi
Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan.
Nat Commun. 2015 Nov 16;6:8934. doi: 10.1038/ncomms9934.
Fluidic control is an essential technology widely found in processes such as flood control in land irrigation and cell metabolism in biological tissues. In any fluidic control system, valve function is the key mechanism used to actively regulate flow and miniaturization of fluidic regulation with precise workability will be particularly vital in the development of microfluidic control. The concept of crystal engineering is alternative to processing technology in microstructure construction, as the ultimate microfluidic devices must provide molecular level control. Consequently, microporous crystals can instantly be converted to microfluidic devices if introduced in an active transformability of porous structure and geometry. Here we show that the introduction of a stress-induced martensitic transition mechanism converts a microporous molecular crystal into an active fluidic device with spatiotemporal molecular flow controllability through mechanical reorientation of subnanometre channels.
流体控制是一项重要技术，广泛应用于诸如陆地灌溉中的防洪以及生物组织中的细胞代谢等过程。在任何流体控制系统中，阀门功能是用于主动调节流量的关键机制，而具有精确可操作性的流体调节小型化在微流体控制的发展中将尤为重要。晶体工程的概念是微观结构构建中加工技术的替代方案，因为最终的微流体装置必须提供分子水平的控制。因此，如果引入多孔结构和几何形状的主动可转换性，微孔晶体可以立即转变为微流体装置。在此，我们表明引入应力诱导马氏体转变机制可通过亚纳米通道的机械重新定向，将微孔分子晶体转变为具有时空分子流可控性的活性流体装置。
