论文标题
光学镊子中非平衡随机过程的热力学测量
Thermodynamic measurement of non-equilibrium stochastic processes in optical tweezers
论文作者
论文摘要
由于它们在研究微观尺度中的现象方面具有多功能性，光学镊子一直是研究随机热力学的绝佳平台。在这种情况下，这项工作介绍了使用谐波电位中的胶体布朗颗粒对驱动的有限时间方案的能量成本进行实验测量。对于这个简单的模型系统，我们比较了时间依赖性陷阱中最佳和亚最佳协议的结果，从而以不同的调制幅度和协议时间来控制陷阱刚度。我们还从实验数据中计算了随机轨迹的Jarzynski关系，作为独立的一致性检查。
Due to their versatility in investigating phenomena in microscopic scales, optical tweezers have been an excellent platform for studying stochastic thermodynamics. In this context, this work presents experimental measurements of the energetic cost of driven finite-time protocols using colloidal Brownian particles in harmonic potentials. For this simple model system, we compare the results of optimal and sub-optimal protocols in a time-dependent trap, controlling the trap stiffness with different modulation amplitudes and protocol times. We also calculate the Jarzynski relation for the stochastic trajectories from the experimental data as an independent consistency check.
