Fluid manipulation at microscopic scale

MSc Erasmus LLP Exchange student Sebastiano Lazzi Gazzini
Location: Lab. for Aero & Hydrodynamics
Supervisor: J. Hussong
Duration of project: 15th March 2010 - 15th July 2010

Project description:

Inspiration for fluid manipulation at microscopic scale is provided by nature. Micro-organisms such as Ctenophores propel themselves within the surrounding fluid by means of cilia: microscopic filaments actuated chemically in a coordinate asymmetric motion. Magnetically actuated artificial cilia could be an answer to the need of fluid mixing and pumping within micro-channels and devices such as Labs-on-a-chip. The production of artificial cilia is a complex and difficult task and the assessment of their functionality requires advanced experimental techniques such as stroboscopic micro-PIV measurements. The aim of my thesis is to perform time resolved brightfield measurements to quantitatively evaluate the response of artificial cilia to different time varying magnetic fields in a range of frequencies from 0.1 to 50 Hz. The velocities induced by the cilia are determined by means of micro-PIV measurements. An experimental setup is prepared to estimate the drag of an array of artificial cilia.

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