Nanocrystal Diffusion in a Liquid Thin Film Observed by in situ Transmission Electron Microscopy Page: 1 of 17
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Nanocrystal Diffusion in a Liquid Thin Film Observed by in situ Transmission
Haimei Zheng',2,3, Shelley A. Claridge3, Andrew M. Minor',24, A. Paul Alivisatos2,3,
Ulrich Dahmen,2 #
'National Center for Electron Microcopy, Lawrence Berkeley National Laboratory,
Berkeley, CA 94720, USA
2Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA
3Department of Chemistry, University of California, Berkeley, CA 94720, USA
4Department of Materials Science and Engineering, University of California, Berkeley,
CA 94720, USA
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-15 %glycerol 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. 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/m1/1/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.