论文标题
光学诱捕和关键的卡西米尔力
Optical trapping and critical Casimir forces
论文作者
论文摘要
临界卡西米尔力在物体之间（例如胶体颗粒）之间出现，每当它们的表面空间限制了用作溶剂的关键液体的阶数参数的波动。这些力在这些物体之间起作用，但在这些物体之间起着很大的距离，通常达到数百纳米。将胶体保持在这种距离是一个主要的实验挑战，可以通过光学镊子来解决。在这里，我们回顾了如何成功使用光学镊子来定量研究作用于悬浮液颗粒的关键casimir力。正如我们将看到的那样，使用光学镊子在实验上研究关键的Casimir力量可以在开发纳米技术方面发挥关键作用，这代表了一种创新的方式来实现纳米和微观尺度上的自组装设备。
Critical Casimir forces emerge between objects, such as colloidal particles, whenever their surfaces spatially confine the fluctuations of the order parameter of a critical liquid used as a solvent. These forces act at short but microscopically large distances between these objects, reaching often hundreds of nanometers. Keeping colloids at such distances is a major experimental challenge, which can be addressed by the means of optical tweezers. Here, we review how optical tweezers have been successfully used to quantitatively study critical Casimir forces acting on particles in suspensions. As we will see, the use of optical tweezers to experimentally study critical Casimir forces can play a crucial role in developing nano-technologies, representing an innovative way to realize self-assembled devices at the nano- and microscale.
