Berejnov Viatcheslav V
Physics Department, Cornell University, Ithaca, NY 14853-2501, USA.
J Colloid Interface Sci. 2008 Jun 1;322(1):246-51. doi: 10.1016/j.jcis.2008.03.020. Epub 2008 Mar 18.
Proteins dissolved in a drop induce and enhance the pinning of the drop contact line. This effect dramatically increases the volume of drops that are vertically pinned on a flat siliconized substrate. It was found that this drop pinning behavior exhibits two regimes: for low protein content in a drop the pinning increases as the contact angle hysteresis increases, and for high protein content the pinning decreases as the surface tension of the protein solution decreases.
溶解在液滴中的蛋白质会诱导并增强液滴接触线的钉扎作用。这种效应显著增加了垂直钉扎在平坦硅化基底上的液滴体积。研究发现，这种液滴钉扎行为表现出两种状态：对于液滴中低蛋白质含量，钉扎作用随接触角滞后的增加而增强；对于高蛋白质含量，钉扎作用随蛋白质溶液表面张力的降低而减弱。
