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The fabrication and modeling of a microorganism separation stage for oceanographic investigations based on MEMS-grippers is targeted in this project. The microorganism viability must be guaranteed. The thermal, electrical and mechanical impact on microorg

该项目的目标是基于 MEMS 夹具的海洋学研究微生物分离阶段的制造和建模。

基本信息

批准号：
207342776
负责人：
Professor Dr.-Ing. Stephan Warnat
金额：
--
依托单位：
Department of Mechanical Engineering
依托单位国家：
德国
项目类别：
Research Fellowships
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/207342776?language=en
关键词：
fabrication modeling microorganism separation stage

项目摘要

The characterization of separated microorganisms plays a major role to understand several oceanographic phenomenas. The CO2 buffering is just one example. Microorganisms must be separated from microbial communities to obtain a pure signal of the organism of interest. Some experimental separation approaches are currently in use. However, these techniques use expensive assemblies and well trained personal is often necessary to operate these instruments. Microsystem-Technologies (MEMS) allow the fabrication of microgrippers. The separation of migroorganism by using MEMS microgrippers is principally shown in the literature. However, the viability of oceanographic microorgansim is not investigated yet when they are separated by MEMS-microgrippers. Thermal and electrical interaction phenomena between the gripper and the organism can be a critical aspect. The actuating MEMS structures of microgrippers are based on thermal expansion of the structures or by electrostatic attraction. The arising temperatures or electrical potentials are critical for organisms. Theoretical calculations and finite element simulations will show how the MEMS fabrication technologies allow a thermal and electrical decoupling of the actuating structures from the organisms. The Multi-User MEMS fabrication process will be taken as an example. The optimized microgrippers structures will be fabricated afterwards and the microorganism viability will be tested. The growth behaviour after separation by using the MEMS microgripper will be investigated. Seawater can be viewed as a critical medium for the device reliability due to the high salinity. Thus, reliability tests of MEMS structures in seawater will be also investigated in this project.

分离微生物的特性对理解几种海洋学现象起着重要作用。二氧化碳缓冲只是一个例子。微生物必须从微生物群落中分离出来，以获得感兴趣的有机体的纯信号。目前正在使用一些实验分离方法。然而，这些技术使用昂贵的组件，并且通常需要训练有素的人员来操作这些仪器。微系统技术（MEMS）允许制造微夹持器。利用MEMS微钳对微生物的分离主要见于文献中。然而，海洋微生物在mems微钳分离时的生存能力尚未得到研究。热和电的相互作用现象之间的抓手和有机体可以是一个关键方面。微夹持器的致动MEMS结构是基于结构的热膨胀或静电吸引。产生的温度或电势对生物体是至关重要的。理论计算和有限元模拟将展示MEMS制造技术如何使驱动结构与生物体的热和电解耦。以多用户MEMS的制造工艺为例。然后制作优化后的微夹持器结构，并进行微生物活力测试。研究了MEMS微钳分离后的生长行为。由于海水的高盐度，因此可以将其视为设备可靠性的关键介质。因此，本项目还将对MEMS结构在海水中的可靠性试验进行研究。