标题： 非仿射缺陷前体的统计：使用外场调控胶体晶体中的缺陷密度 显示英文标题

标题： Statistics of non-affine defect precursors: tailoring defect densities in colloidal crystals using external fields

摘要： 在固体中对原子位移进行粗粒化处理会产生局部仿射应变和“非仿射”涨落。 在这里，我们研究这些粗粒化量的平衡动力学，以获得时空依赖的相关函数。 我们展示了这些热激发的非仿射涨落的一小部分如何作为晶格缺陷形核的前兆，并建议如何通过与全局非仿射参数共轭的{\it 可以实验实现的}“外部”场改变缺陷概率。 我们的结果可以通过使用常见可用的全息激光镊子和视频显微技术对胶体晶体进行实验验证，并可能带来控制胶体固体缺陷密度的简单方法。 显示英文摘要

摘要： Coarse-graining atomic displacements in a solid produces both local affine strains and "non-affine" fluctuations. Here we study the equilibrium dynamics of these coarse grained quantities to obtain space-time dependent correlation functions. We show how a subset of these thermally excited, non-affine fluctuations act as precursors for the nucleation of lattice defects and suggest how defect probabilities may be altered by an {\it experimentally realisable} "external" field conjugate to the global non-affinity parameter. Our results are amenable to verification in experiments on colloidal crystals using commonly available holographic laser tweezer and video microscopy techniques, and may lead to simple ways of controlling the defect density of a colloidal solid.