【五秒钟文献阅读系列】
你有没有在满是尘土的地面上洒过水?
水滴沾满了尘土而形成的小球可以在地上滚上很远并且相当稳定,而这一现象最早曾在约两千年前在老普林尼的《自然史》中得以描述[1]。这种由沾满了疏水液滴所形成的小球被称为是“liquid marble“。该种小球并不会浸湿该液滴本可浸润的表面、小球间的碰撞也不会导致融合、甚至可以在水面上漂浮一定的时间,而用棒或者是手指则可以轻易地将其一分为二。
Figure 1. (a) Water marble on a solid (side view), or (b) on a water pool (top view).
Figure 2. Projection of a liquid marble on another one; 4 ms separate each image.
Figure 3. Division of a millimetric water marble; 4 ms separate each image.
Liquid Marbles的概念最早报道于1968年的一份专利之中[2]。实际上,制备这种小液滴的方法非常之简单——把液滴放置在铺有一层疏水的微球的表面上,再使液滴滚动,沾上细颗粒即可。
如某文章[3]的Supplementary Information:
Typically, 15 μL glucose (or gluconolactone) solution was first placed on a bed of silica particles, then 15 μL diamminesilver(I) solution was injected into the droplets, after rolling, normal liquid marbles were prepared.
目前有不少关于这个的报道……比如说将其作为微反应器、做污染检测、气体检测啥的……
有兴趣的看看文献[3]的引用吧。
总之很好玩不是吗?
[1] Aussillous, P., & Quéré, D. (2006). Properties of liquid marbles. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science,462(2067), 973-999.
[2] S. Dieter, S. Franz-Theo, B. Helmut (Degussa), US3393155A, 1968.
[3] Sheng, Y., Sun, G., Wu, J., Ma, G., & Ngai, T. (2015). Silica-Based Liquid Marbles as Microreactors for the Silver Mirror Reaction. Angewandte Chemie.
你有没有在满是尘土的地面上洒过水?
水滴沾满了尘土而形成的小球可以在地上滚上很远并且相当稳定,而这一现象最早曾在约两千年前在老普林尼的《自然史》中得以描述[1]。这种由沾满了疏水液滴所形成的小球被称为是“liquid marble“。该种小球并不会浸湿该液滴本可浸润的表面、小球间的碰撞也不会导致融合、甚至可以在水面上漂浮一定的时间,而用棒或者是手指则可以轻易地将其一分为二。
Figure 1. (a) Water marble on a solid (side view), or (b) on a water pool (top view).
Figure 2. Projection of a liquid marble on another one; 4 ms separate each image.
Figure 3. Division of a millimetric water marble; 4 ms separate each image.
Liquid Marbles的概念最早报道于1968年的一份专利之中[2]。实际上,制备这种小液滴的方法非常之简单——把液滴放置在铺有一层疏水的微球的表面上,再使液滴滚动,沾上细颗粒即可。
如某文章[3]的Supplementary Information:
Typically, 15 μL glucose (or gluconolactone) solution was first placed on a bed of silica particles, then 15 μL diamminesilver(I) solution was injected into the droplets, after rolling, normal liquid marbles were prepared.
目前有不少关于这个的报道……比如说将其作为微反应器、做污染检测、气体检测啥的……
有兴趣的看看文献[3]的引用吧。
总之很好玩不是吗?
[1] Aussillous, P., & Quéré, D. (2006). Properties of liquid marbles. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science,462(2067), 973-999.
[2] S. Dieter, S. Franz-Theo, B. Helmut (Degussa), US3393155A, 1968.
[3] Sheng, Y., Sun, G., Wu, J., Ma, G., & Ngai, T. (2015). Silica-Based Liquid Marbles as Microreactors for the Silver Mirror Reaction. Angewandte Chemie.