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Experimental and Numerical Investigation of Ferrofluid Droplet Formation under Magnetic Field with Biotechnology Application
, Ph.D. Dissertation Sharif University of Technology ; Shafii, Mohammad Behshad (Supervisor)
Abstract
Droplet-based microfluidics offers a promising tool in engineering and biomedicine such as drug delivery, biochemistry, sample handling in lab-on-a-chip devices, and tissue engineering. These systems provide the droplets manipulation that can be used as reactors without any contamination for medical purposes. Utilizing magnetic force and ferrofluid droplets can help to better control over the droplet formation and manipulation. Considering the importance of this issue and its rich underlying physics, in this dissertation, ferrofluid droplets formation under a time-dependent, non-uniform magnetic field is studied. A Pulse-Width-Modulation signal (PWM) is utilized to apply the time-dependent...
Application of Machine Learning in Numerical Simulation of Electrohydrodynamic Printer
, M.Sc. Thesis Sharif University of Technology ; Moosavi, Ali (Supervisor) ; Nouri Borujerdi, Ali (Supervisor)
Abstract
Electrohydrodynamic Printing (EHD Printing) has become a popular method for producing components and devices with extremely small dimensions. This type of printing is a subset of inkjet printing and is considered one of the additive manufacturing techniques. One of the most widely used methods in EHD printing is the application of voltage in the form of pulses, which results in the generation of small droplets for constructing the desired pattern. Since this type of printing involves a combination of various physical phenomena and phases, predicting the fluid behavior and consequently the printing properties is highly complex. Therefore, a method is needed to optimize the printing process by...