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Kwon, Oh Hoon
Ultrafast Laser Spectroscopy and Nano-microscopy (ULSaN Lab)
Research Interests
  • Femtochemistry/biology, 4D electron microscopy, structural dynamics, materials phenomena

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Single-nanoparticle phase transitions visualized by four-dimensional electron microscopy

Cited 22 times inthomson ciCited 16 times inthomson ci
Title
Single-nanoparticle phase transitions visualized by four-dimensional electron microscopy
Author
van der Veen, Renske M.Kwon, Oh HoonTissot, AntoineHauser, AndreasZewail, Ahmed H.
Issue Date
2013-05
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE CHEMISTRY, v.5, no.5, pp.395 - 402
Abstract
The advancement of techniques that can probe the behaviour of individual nanoscopic objects is of paramount importance in various disciplines, including photonics and electronics. As it provides images with a spatiotemporal resolution, four-dimensional electron microscopy, in principle, should enable the visualization of single-nanoparticle structural dynamics in real and reciprocal space. Here, we demonstrate the selectivity and sensitivity of the technique by visualizing the spin crossover dynamics of single, isolated metal-organic framework nanocrystals. By introducing a small aperture in the microscope, it was possible to follow the phase transition and the associated structural dynamics within a single particle. Its behaviour was observed to be distinct from that imaged by averaging over ensembles of heterogeneous nanoparticles. The approach reported here has potential applications in other nanosystems and those that undergo (bio) chemical transformations.
URI
https://scholarworks.unist.ac.kr/handle/201301/8725
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84876840605
DOI
10.1038/nchem.1622
ISSN
1755-4330
Appears in Collections:
CHM_Journal Papers
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