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Issue 37, 2013
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Dynamics of hydrogen nanobubbles in KLH protein solution studied with in situ wet-TEM

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Abstract

Although the stability of the nanobubble remains a controversial issue that is subject to the classical predictions of high Laplace pressure, we demonstrate that a hydrogen nanobubble can be generated and stabilized in an aqueous solution of Keyhole limpet hemocyanin (KLH) protein via an electron radiolysis process. The hydrogen gas inside the nanobubble is in a “dense gas” phase that is characterized by a Knudsen number and number density of hydrogen molecules. The dynamics of nanobubbles are analyzed using time-series electron microscopy images. The growth of small nanobubbles will be affected by the largest neighboring nanobubble; however, a diffusive shielding effect for small nanobubbles is observed. Locally, anti-Ostwald ripening of nanobubbles can be observed; however, the global growth behavior among the nanobubbles is randomly correlated because the characteristic diffusion length of the hydrogen molecules is considerably greater than the average spacing among the nanobubbles.

Graphical abstract: Dynamics of hydrogen nanobubbles in KLH protein solution studied with in situ wet-TEM

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Article information


Submitted
02 Apr 2013
Accepted
15 Jul 2013
First published
16 Jul 2013

Soft Matter, 2013,9, 8856-8861
Article type
Paper

Dynamics of hydrogen nanobubbles in KLH protein solution studied with in situ wet-TEM

T. Huang, S. Liu, Y. Chuang, H. Hsieh, C. Tsai, W. Wu, C. Tsai, U. Mirsaidov, P. Matsudaira, C. Chang, F. Tseng and F. Chen, Soft Matter, 2013, 9, 8856
DOI: 10.1039/C3SM50906K

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