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Impact-Induced Cleaving and Melting of Alkali-Halide Nanocrystals
Abstract
Impact of nanocrystalline alkali-halide clusters against solid surfaces causes them to fission exclusively into low surface-energy fragments. In time-of-flight scattering experiments, this process appears at an impact energy so low that it must result from a single-step cleavage of the nanocrystal along low surface-energy cleavage planes. At higher energies (more than 1 electron volt per atom), a crossover occurs to an entirely different behavior—evaporative cascades that proceed irrespective of the structure-energetic properties of the fragments. These cascades, and the approximately linear scaling of the crossover energy with cluster size, are characteristic of impact-induced transformation of the cluster to a molten state. Collision with the high-rigidity surface of silicon gives a substantially greater cleavage probability than the soft basal-plane surface of graphite.
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Cited by
Chemistry and Properties of Nanocrystals of Different Shapes
Burda, C., Chen, X., Narayanan, R., & El-Sayed, M. A. (2005) · Chemical Reviews · doi:10.1021/cr030063a · Cited by 7,230
Perspectives on the Physical Chemistry of Semiconductor Nanocrystals
Alivisatos, A. P. (1996) · The Journal of Physical Chemistry · doi:10.1021/jp9535506 · Cited by 3,595
Neuronal Nicotinic Acetylcholine Receptors as Targets for Drug Discovery
Holladay, M. W., Dart, M. J., & Lynch, J. K. (1997) · Journal of Medicinal Chemistry · doi:10.1021/jm970377o · Cited by 444
Metadata
- Authors
- Beck, R. D., St. John, P., Homer, M. L., & Whetten, R. L.
- Venue
- Science
- Published
- 1991-08-23
- Volume
- 253
- Issue
- 5022
- Pages
- 879-883
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2052381633
- Cited by
- 176
- References
- 0
- FWCI
- 12.34
- Type
- journal article
- Language
- en
- Open access
- closed
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- Beck, R. D., St. John, P., Homer, M. L., & Whetten, R. L. (1991). Impact-Induced Cleaving and Melting of Alkali-Halide Nanocrystals. Science. https://doi.org/10.1126/science.253.5022.879
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