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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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Publication details

The article was received on 02 Apr 2013, accepted on 15 Jul 2013 and first published on 16 Jul 2013


Article type: Paper
DOI: 10.1039/C3SM50906K
Soft Matter, 2013,9, 8856-8861

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    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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