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Ahmad N, Le Bouar Y, Ricolleau C, Alloyeau D. Growth of dendritic nanostructures by liquid-cell transmission electron microscopy: a reflection of the electron-irradiation history. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40679-016-0023-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractStudying dynamical processes by transmission electron microscopy (TEM) requires considering the electron-irradiation history, including the instantaneous dose rate and the cumulative dose delivered to the sample. Here, we have exploited liquid-cell TEM to study the effects of the electron-irradiation history on the radiochemical growth of dendritic Au nanostructures. Besides the well-established direct link between the dose rate and the growth rate of the nanostructures, we demonstrate that the cumulative dose in the irradiated area can also induce important transitions in the growth mode of the nanostructures. By comparing in situ observations with an extended diffusion-limited aggregation model, we reveal how the shape of the nanostructures is severely affected by the local lack of metal precursors and the resulting restricted accessibility of gold atoms to the nanostructures. This study highlights the effects of electron irradiation on the solution chemistry in the irradiated area and in the whole liquid cell that are of primary importance to extract quantitative information on nanoscale processes.
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Lee CK, Liang WH, Lee SL. A Multifractal Approach to Heterogeneous Reactions over Fractal Surfaces. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199400094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lee CK, Lee SL. Multifractal scaling analysis of autocatalytic and autopoisoning reactions over DLA surfaces. Chem Phys Lett 1994. [DOI: 10.1016/0009-2614(94)00972-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lee CK, Lee SL. Multifractal scaling analysis of the selectivity behavior of a multi-step reaction over DLA surfaces. Chem Phys Lett 1994. [DOI: 10.1016/0009-2614(94)00707-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Multifractal analysis of diffusion-limited reactions over surfaces of diffusion-limited aggregates. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)87018-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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