Nanocrystal Diffusion in a Liquid Thin Film Observed by in situ Transmission Electron Microscopy

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We have directly observed motion of inorganic nanoparticles during fluid evaporation using a Transmission Electron Microscope. Tracking real-time diffusion of both spherical (5-15 nm) and rod-shaped (5x10 nm) gold nanocrystals in a thin-film of water-15percentglycerol reveals complex movements, such as rolling motions coupled to large-step movements and macroscopic violations of the Stokes-Einstein relation for diffusion. As drying patches form during the final stages of evaporation, particle motion is dominated by the nearby retracting liquid front.

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Zheng, Haimei; Claridge, Shelley A.; Minor, Andrew M.; Alivisatos, A. Paul & Dahmen, Ulrich April 17, 2009.

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We have directly observed motion of inorganic nanoparticles during fluid evaporation using a Transmission Electron Microscope. Tracking real-time diffusion of both spherical (5-15 nm) and rod-shaped (5x10 nm) gold nanocrystals in a thin-film of water-15percentglycerol reveals complex movements, such as rolling motions coupled to large-step movements and macroscopic violations of the Stokes-Einstein relation for diffusion. As drying patches form during the final stages of evaporation, particle motion is dominated by the nearby retracting liquid front.

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16

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  • Journal Name: Nano Letters; Journal Volume: 6; Related Information: Journal Publication Date: 05/2009

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  • Report No.: LBNL-1804E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 993849
  • Archival Resource Key: ark:/67531/metadc1012937

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  • April 17, 2009

Added to The UNT Digital Library

  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 17, 2017, 6:22 p.m.

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Zheng, Haimei; Claridge, Shelley A.; Minor, Andrew M.; Alivisatos, A. Paul & Dahmen, Ulrich. Nanocrystal Diffusion in a Liquid Thin Film Observed by in situ Transmission Electron Microscopy, article, April 17, 2009; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1012937/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.