微机械振荡器的快速平衡开关
Fast equilibrium switch of a micro mechanical oscillator
摘要：
我们展示了一种精确的方法来控制与热浴接触的微机械振荡器的运动。实验在原子力显微镜（AFM）的悬臂梁针尖上进行。施加适当的时间依赖的外力，我们减少了两个数量级的内在平衡时间相比，达到平衡所需的时间。最后，我们分析了这样一个快速平衡的能量成本，通过测量与kBT精度的能量交换沿过程。
英文摘要：
We demonstrate an accurate method to control the motion of a micromechanical oscillator in contact with a thermal bath. The experiment is carried out on the cantilever tip of an Atomic Force Microscope (AFM). Applying an appropriate time dependent external force, we decrease the time necessary to reach equilibrium by two orders of magnitude compared to the intrinsic equilibration time. Finally, we analyze the energetic cost of such a fast equilibration, by measuring with kBT accuracy the energy exchanges along the process.
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