Hot Brownian Motion

热布朗运动

• 批准号: 58079228
• 负责人: Professor Dr. Frank Cichos
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/58079228?language=en
• 关键词: Hot; Brownian; Motion

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.

我们计划研究激光加热的微米和纳米粒子的布朗运动，并开发和测试这种“热布朗运动”的有效马尔可夫理论。我们的目标是建立这些热各向同性颗粒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。扩展热操纵的布朗运动的概念，我们将考虑加热粒子与各向异性的温度分布，探索自推进粒子和主动流体力学的现象学和理论的关系，并在纳米科学和纳米技术的应用选项。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，聚合物物理学和纳米粒子物理学）和理论（非平衡统计力学和波动流体力学）中具有挑战性的任务，将由来自莱比锡和德累斯顿的三个密切合作的小组解决。该项目的结果将为纳米级热源的应用铺平道路，以控制纳米级传输的光学手段。我们计划研究激光加热的微米和纳米粒子的布朗运动，并开发和测试这种“热布朗运动”的有效马尔可夫理论。我们的目标是建立这些热各向同性颗粒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。扩展热操纵的布朗运动的概念，我们将考虑加热粒子与各向异性的温度分布，探索自推进粒子和主动流体力学的现象学和理论的关系，并在纳米科学和纳米技术的应用选项。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，聚合物物理学和纳米粒子物理学）和理论（非平衡统计力学和波动流体力学）中具有挑战性的任务，将由来自莱比锡和德累斯顿的三个密切合作的小组解决。该项目的结果将为纳米级热源的应用铺平道路，以控制纳米级传输的光学手段。