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Microbubble Generation for Medical Applications. Shirley Zhang Faculty Mentor: Abraham Lee Graduate Student: Kanaka Hettiarachchi. Overview. Microfluidic devices for generating bubbles – test for optimal conditions Create double layer bubbles to contain lipid and oil surrounding gas
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Microbubble Generation for Medical Applications Shirley Zhang Faculty Mentor: Abraham Lee Graduate Student: Kanaka Hettiarachchi
Overview • Microfluidic devices for generating bubbles – test for optimal conditions • Create double layer bubbles to contain lipid and oil surrounding gas • Test stability and attachment of bubbles in vitro
Making Devices U.V. Photoresist Mask Silicon wafer Develop Microfluidic channels PDMS
Monolayer bubbles • Components: • Lipid (DSPE/DPPE-PEG2000) • Gas (PFC or N2) • Diameter: • ~15 um ColorCam 10x magnification
Fluorescence • DiI mixed into lipids ColorCam 40x magnification
Double Layer Bubbles • Components: • Lipid • Oil • Gas (PFC or N2) • No lipid shell – no concentrated fluorescence around bubbles FastCam
Problems Triacetin DSPC/DSPE-PEG2K N2 FastCam
Future Direction • Successfully make stable double layer bubbles • Microbubbles as a drug delivery system in cell culture