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Imaging Atomic Structure in Metal Nanoparticles Using High-Resolution Cryo-TEM

Published online by Cambridge University Press:  09 December 2005

Olivier Balmes ,
Jan-Olle Malm ,
Niklas Pettersson ,
Gunnel Karlsson  and
Jan-Olov Bovin
Olivier Balmes
Affiliation:
National Center for High Resolution Electron Microscopy, Department of Materials Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
Jan-Olle Malm
Affiliation:
National Center for High Resolution Electron Microscopy, Department of Materials Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
Niklas Pettersson
Affiliation:
National Center for High Resolution Electron Microscopy, Department of Materials Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
Gunnel Karlsson
Affiliation:
Biomicroscopy Unit, Chemical Centre, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
Jan-Olov Bovin
Affiliation:
National Center for High Resolution Electron Microscopy, Department of Materials Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
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Abstract

It has been shown, by imaging gold (200) planes, that it is possible to achieve better than 0.20-nm structural resolution in cryo-transmission electron microscopy (cryo-TEM). This has been done using commercially available cryo equipment and using a 300-kV field emission gun (FEG) TEM. The images of 15-nm gold particles embedded in amorphous frozen water clearly show the (111) planes (separated by 0.235 nm) in gold. Fourier transform demonstrates the presence of (200) planes in the image, proving a resolution of better than 0.20 nm. The experimental results are supported by image simulations using the multislice method. These simulations suggest that it should be possible to achieve the same resolution even in smaller particles and particles of lighter elements. The crucial experimental problem to overcome is keeping the thickness of the amorphous film low and to work at low electron dose conditions.

Keywords

cryo-TEMnanoparticlesgold particlesstructural resolutionplunge freezingimage simulation
Type
MATERIALS APPLICATIONS
Information
Microscopy and Microanalysis , Volume 12 , Issue 2 , April 2006 , pp. 145 - 150
Copyright
© 2006 Microscopy Society of America

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References

REFERENCES

Bellare, J.R., Davis, H.T., Scriven, L.E., & Talmon, Y. (1988). Controlled environment vitrification system: An improved sample preparation technique. J Electron Microsc Technol 10, 87–111.Google Scholar
Bovin, J.-O., Huber, T., Balmes, O., Malm, J.-O., & Karlsson, G. (2000). A new view on chemistry of solids in solution—cryo energy-filtered transmission electron microscopy (cryo-EFTEM) imaging of aggregating palladium colloids in vitreous ice. Chem Eur J 6, 129–132.Google Scholar
Brust, M., Walker, M., Bethell, D., Schiffrin, D.J., & Whyman, R.J. (1994). Synthesis of thiol-derivatised gold nanoparticles in a two-phase liquid–liquid system. J Chem Soc Chem Commun 7, 801–802.Google Scholar
Butter, K., Philipse, A.P., & Vroege, G.J. (2002). Synthesis and properties of ferrofluids. J Magn Mater 252, 1–3.Google Scholar
Judat, B. & Kind, M. (2003). Morphology and internal structure of barium sulfate—Derivation of a new growth mechanism. Coll Interface Sci 269, 341–353.Google Scholar
Karlsson, G. (2001). Thickness measurements of lacey carbon films. J Microsc 203, 326–328.Google Scholar
Malm, J.-O., Pettersson, N., Wallenberg, L.R., & Bovin, J.-O. (2002). Simulations of TEM images of nano-particles embedded in amorphous ice. In Proceedings of the Microscopy and Microanalysis Society, Quebec, Canada, August 4–8, 2002, p. 1394CD.
Mondelaers, D., Vanhoyland, G., Van Den Rul, H., D'haen, J., Van Bael, M.K., Mullens, J., & Van Poucke, L.C. (2002). Synthesis of ZnO nanopowder via an aqueous acetate-citrate gelation method. Mat Res Bull 37, 901–914.Google Scholar
Regev, O., Backov, R., & Faure, C. (2004). Gold nanoparticles spontaneously generated in onion-type multilamellar vesicles. Bilayers-particle coupling imaged by cryo-TEM. Chem Mater 16, 5280–5285.Google Scholar
Schoeman, B.J. & Regev, O. (1996). A study of the initial stage in the crystallisation of TPA-silicalite-1. Zeolites 17, 447–456.Google Scholar
Turkevich, J., Stevenson, P.C., & Hillier, J. (1951). Nucleation and growth process in the synthesis of colloidal gold. J Disc Faraday Soc 11, 55–80.Google Scholar
Wang, C., Böttcher, C., Bahnemann, D.W., & Dohrman, J.K. (2004). In situ electron microscopy investigation of Fe(III)-doped TiO2 nanoparticles in an aqueous environment. J Nanopart Res 6, 119–122.Google Scholar
Wang, Z.L. (2000). Transmission electron microscopy of shape-controlled nanocrystals and their assemblies. J Phys Chem B 104, 1153–1175.Google Scholar