Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/69008
Title: Nanobubble dynamics studied with transmission electron microscopy
Authors: Mohan, Meera Kanakamma
Keywords: DRNTU::Science::Chemistry
Issue Date: 2016
Source: Mohan, M. K. (2016). Nanobubble dynamics studied with transmission electron microscopy. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: The study of nanoscale phenomena using in-situ transmission electron microscopy (TEM) has received increasing attention due to its ability to image at both high spatial and temporal resolution. In this study, nanobubbles forming within graphene liquid cells are characterised in TEM. It was observed that nanobubbles shrink quickly under illumination by an electron beam, but are stable for an hour or more in its absence. By observing the merger of nanobubbles, it was deduced that the apparent viscosity of the confined water in the graphene liquid cell is much larger than bulk water, and this reduces the diffusion constant to an extent that supports the long lifetime of the bubble. Apart from these observations, we also characterize instances of bubbles rupturing, oscillating, merging and non-coalescence events. Key Words: Nanobubble, Transmission Electron Microscope, nanobubble stability, bubble merger, bubble shrinkage, bubble rupture, bubble oscillations, diffusion, non-coalescence.
URI: https://hdl.handle.net/10356/69008
DOI: 10.32657/10356/69008
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Theses

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