Transformations of gold nanoparticles investigated using variable temperature high-resolution transmission electron microscopy

Young, Neil P.; Huis, Marijn A. van; Zandbergen, H.W.; Xu, Huifang; Kirkland, Angus I.

doi:10.1016/j.ultramic.2009.12.010

Cited by 63 publications

(57 citation statements)

References 42 publications

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“…Cooling experiments were performed using a liquid nitrogen TEM sample holder manufactured by Fischione Instruments. 20 Selected area diffraction patterns were recorded on a 4096 Â 4096 pixel Gatan Ultrascan CCD using an aperture of $360 nm diameter in the image plane, a 20 cm camera length, and an exposure time of 4 s. …”

Section: Methodsmentioning

confidence: 99%

Temperature dependence of atomic vibrations in mono-layer graphene

Allen

Liberti

Kim

et al. 2015

Journal of Applied Physics

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We have measured the mean square amplitude of both in-and out-of-plane lattice vibrations for mono-layer graphene at temperatures ranging from $100 K to 1300 K. The amplitude of lattice vibrations was calculated from data extracted from selected area electron diffraction patterns recorded across a known temperature range with over 80 diffraction peaks measured per diffraction pattern. Using an analytical Debye model, we have also determined values for the maximum phonon wavelength that can be supported by a mono-layer graphene crystal and the magnitude of quantum mechanical zero point vibrations. For in-plane phonons, the quantum mechanical zero point contribution dominates the measured atomic displacement at room temperature, whereas for out-of-plane modes, thermally populated phonons must be considered. We find a value for the maximum phonon wavelength sampled that is several orders of magnitudes smaller than the physical crystallite size. V C 2015 AIP Publishing LLC. [http://dx

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Section: Methodsmentioning

confidence: 99%

Temperature dependence of atomic vibrations in mono-layer graphene

Allen

Liberti

Kim

et al. 2015

Journal of Applied Physics

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“…aberration corrected TEMs and modern CCD cameras) have made in-situ observation of atomic hopping possible including structural transformations in gold at elevated temperatures, e.g. [5,6]. Here we report the use of aberration-corrected bright-field phase-contrast TEM in monitoring atomic movements in oxide crystals.…”

Section: Introductionmentioning

confidence: 97%

Atomic motion on various surfaces of ceria nanoparticles in comparison

Bhatta

Ross

Saghi

et al. 2012

J. Phys.: Conf. Ser.

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“…The precise temperature control and rapid temperature changes combined with very low drift rates achieved by today's in situ TEM heating systems [58] allowed for a combined microscopic and statistical investigation with high temporal resolution. The magnification during the in situ experiments is carefully selected to on the one hand image single dewetting processes with sufficient spatial resolution but on the other hand capture a multitude of such processes at the same time to allow statistical quantification.…”

Section: Introductionmentioning

confidence: 99%