Hot Brownian Motion

我们计划研究激光加热的微米和纳米粒子的布朗运动，并开发和测试一个有效的马尔可夫理论来解释这种“热布朗运动”。我们的目标是建立这些热各向同性粒子作为一种有效的新的定量示踪剂和光谱工具，补充广泛应用的荧光技术。扩展热操纵布朗运动的概念，我们将考虑具有各向异性温度分布的受热粒子，以探索与自推进粒子和活动流体力学的现象学和理论的关系，以及在纳米科学和纳米技术中的应用选择。该项目整合了样品制备(表面功能化、粒子链自组装和3D DNA构建)、实验(光学、单分子检测和操纵、聚合物物理和纳米粒子物理)和理论(非平衡统计力学和脉动流体力学)方面的挑战性任务，将由来自莱比锡和德累斯顿的三个密切合作的小组负责。该项目的成果将为应用纳米级热源通过光学手段控制纳米级传输铺平道路。我们计划研究激光加热的微米和纳米粒子的布朗运动，并开发和测试一个有效的马尔可夫理论来解释这种“热布朗运动”。我们的目标是建立这些热各向同性粒子作为一种有效的新的定量示踪剂和光谱工具，补充广泛应用的荧光技术。扩展热操纵布朗运动的概念，我们将考虑具有各向异性温度分布的受热粒子，以探索与自推进粒子和活动流体力学的现象学和理论的关系，以及在纳米科学和纳米技术中的应用选择。该项目整合了样品制备(表面功能化、粒子链自组装和3D DNA构建)、实验(光学、单分子检测和操纵、聚合物物理和纳米粒子物理)和理论(非平衡统计力学和脉动流体力学)方面的挑战性任务，将由来自莱比锡和德累斯顿的三个密切合作的小组负责。该项目的成果将为应用纳米级热源通过光学手段控制纳米级传输铺平道路。

We plan to study the Brownian motion of laser-heated micro- and nanoparticles and to develop and test an effective Markov theory for such “hot Brownian motion”. We aim to establish these thermally isotropic particles as an efficient new quantitative tracer and spectroscopy tool, complementary to widely applied fluorescence techniques. Extending the concept of thermally manipulated Brownian motion we will consider heated particles with anisotropic temperature profiles to explore relations to the phenomenology and theory of self-propelled particles and active hydrodynamics, and options for applications in nanoscience and nanotechnology. The project integrates challenging tasks in sample preparation (surface functionalization, self-assembly of particle chains and 3D DNA construction), experiment (optics, single-molecule detection and manipulation, polymer physics and physics of nanoparticles), and theory (non-equilibrium statistical mechanics and fluctuating hydrodynamics), to be addressed by three closely collaborating groups from Leipzig and Dresden. The results of this project shall pave the way for applications of nanoscale heat sources to control nanoscale transport by optical means. We plan to study the Brownian motion of laser-heated micro- and nanoparticles and to develop and test an effective Markov theory for such “hot Brownian motion”. We aim to establish these thermally isotropic particles as an efficient new quantitative tracer and spectroscopy tool, complementary to widely applied fluorescence techniques. Extending the concept of thermally manipulated Brownian motion we will consider heated particles with anisotropic temperature profiles to explore relations to the phenomenology and theory of self-propelled particles and active hydrodynamics, and options for applications in nanoscience and nanotechnology. The project integrates challenging tasks in sample preparation (surface functionalization, self-assembly of particle chains and 3D DNA construction), experiment (optics, single-molecule detection and manipulation, polymer physics and physics of nanoparticles), and theory (non-equilibrium statistical mechanics and fluctuating hydrodynamics), to be addressed by three closely collaborating groups from Leipzig and Dresden. The results of this project shall pave the way for applications of nanoscale heat sources to control nanoscale transport by optical means.