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Utilizing active suspensions: Creating micro-machines and electric circuits

利用主动悬架：创建微型机器和电路

基本信息

批准号：
275167157
负责人：
Dr. Andreas Kaiser
金额：
--
依托单位：
Materials Science Division
依托单位国家：
德国
项目类别：
Research Fellowships
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/275167157?language=en
关键词：
Utilizing active suspensions Creating micro

项目摘要

In the proposed research project it is planned to address how far active suspensions can be utilized. Active suspensions contain various self-propelled particles. Such particles have an internal self-propulsion mechanism allowing them to perform a directed motion. Examples of active particles can be found on various length scales and in various research domains in science. In biology there are e.g. birds and fish - even human beings can be considered as active particles. On smaller length scales bacteria and sperm are common examples. In the last years various micron-sized artificial realizations of active particles have been achieved. Their self-propulsion is usually due to some self-induced chemical reactions. Recently, numerous studies concentrated on the dynamics of single swimmers and the study of their collective behavior.Up to know most studies concentrated on bulk suspensions. In the proposed research project active suspensions will create micro-machines which will perform a directed rotation. Properly shaped passive building blocks will aggregate in a turbulent bacterial bath and spontaneously perform a directed rotation. This will be carried out by numerical simulations done by the applicant and experiments done at the host institute.Furthermore a new class of active particles is going to be invented. Instead of chemical reactions photovolatic effects will enable the self-propulsion of individual particles. Properly functionalized particles will self-assemble to chains, which will be able to act as electric circuits. As before, these studies will combine numerical and experimental studies.

在拟议的研究项目中，计划探讨主动悬架的应用范围。主动悬架包含各种自推进粒子。这样的粒子有一个内部的自我推进机制，允许它们进行定向运动。活性粒子的例子可以在各种长度尺度和科学的各种研究领域中找到。在生物学中，例如鸟类和鱼类，甚至人类都可以被认为是活跃的粒子。在较小的长度尺度上，细菌和精子是常见的例子。在过去的几年里，各种微米级的活性粒子的人工实现已经实现。它们的自我推进通常是由于一些自我诱导的化学反应。近年来，大量的研究集中在单个游泳者的动力学和集体行为的研究上。到目前为止，大多数研究都集中在散装悬浮液上。在拟议的研究项目中，主动悬架将创造出能够进行定向旋转的微型机器。适当形状的被动构建块将在湍流细菌浴中聚集并自发地进行定向旋转。这将通过申请人所做的数值模拟和在主办机构所做的实验来进行。此外，一类新的活性粒子将被发明出来。代替化学反应，光伏效应将使单个粒子的自我推进成为可能。适当功能化的粒子将自组装成链，这将能够充当电路。和以前一样，这些研究将结合数值和实验研究。