标题： 微凝胶悬浮液中的接触力 显示英文标题

标题： Contact Forces in Microgel Suspensions

摘要： 在一个将微米大小的软胶体颗粒视为液滴的模型中，我们理论研究了它们之间的接触相互作用。 我们计算了在广泛范围的压入深度和不同模型参数下的精确变形能，并表明在吸引和排斥区域，可以分别使用截断超球和球多面体变分形状来再现该能量。 在代表微凝胶的大表面张力下，这种能量在超出小压入深度的情况下仍可近似为成对可加的，并且可以由与压入深度的幂律依赖关系近似，指数约为2。 显示英文摘要

摘要： Within a model where micrometer-size soft colloidal particles are viewed as liquid drops, we theoretically study the contact interaction between them. We compute the exact deformation energy across a broad range of indentations and for various model parameters, and we show that it can be reproduced using truncated superball and spheropolyhedral variational shapes in the attractive and the repulsive regime, respectively. At large surface tensions representative of microgels, this energy is pairwise additive well beyond small indentations and can be approximated by a power-law dependence on indentation with an exponent around 2.