Controlled Smart Anisotropic Unidirectional Spreading of Droplet on a Fibrous Surface
作者：M. Zhang, L. Wang, Y. Hou, S. Feng, Y. Zheng*.
關(guān)鍵字：Anisotropic, Unidirectional, Gradient
論文來源：期刊
具體來源：Adv. Mater. 2015,DOI: 10.1002/adma.201502143
發(fā)表時間：2015年
It presents a smart anisotropic-unidirectional spreading of droplet that is controlled effectively by a hydrophilic
component (chitosan, CHI) gradient on aligned PET (poly ester)/CHI fi brous surface. A CHI-composition gradient
is formed along the aligned fi bers by using a lifting-dissolution method. Thus various WGs can be introduced onto the aligned fi ber surface to control the liquid-spreading behaviors. In addition, a V-shaped WG surface is used to control two droplets in opposite direction to move together in a liquid reaction. The study introduces a mechanism of the integrative cooperative forces between anisotropic contact line force and WG force that result from anisotropic aligned fi bers and CHI-composition gradient. This fi nding offers an insight into the design of the systems and devices that can control the microfl uid movement effectively.
http://onlinelibrary.wiley.com/doi/10.1002/adma.201502143/abstract;jsessionid=DC20EC5AF97C0D0FB2945D9F4F33B8CE.f02t01?wol1URL=/doi/10.1002/adma.201502143/abstract®ionCode=CN-BJ&identityKey=6d9846b8-fe35-4129-ab47-a96e814c0489&isReportingDone=false