Journal
LANGMUIR
Volume 31, Issue 2, Pages 659-666Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la502181g
Keywords
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Funding
- Engineering and Physical Sciences Research Council (EPSRC), U.K. [EP/L023059/1]
- Engineering and Physical Sciences Research Council [EP/E045839/1, EP/L023059/1] Funding Source: researchfish
- EPSRC [EP/E045839/1, EP/L023059/1] Funding Source: UKRI
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A one-pot single-step novel process has been developed to form microbubbles up to 250 mu m in diameter using a pressurized rotating device. The microbubble diameter is shown to be a function of rotational speed and working pressure of the processing system, and a modified Rayleigh-Plesset equation has been derived to explain the bubble-forming mechanism. A parametric plot is constructed to identify a rotating speed and working pressure regime, which allows for continuous bubbling. Bare protein (lysozyme) microbubbles generated in this way exhibit a morphological change, resulting in microcapsules over a period of time. Microbubbles prepared with gold nanoparticles at the bubble surface showed greater stability over a time period and retained the same morphology. The functionalization of microbubbles with gold nanoparticles also rendered optical tunability and has promising applications in imaging, biosensing, and diagnostics.
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