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Science 5 March 1999:
Vol. 283. no. 5407, pp. 1505 - 1507
DOI: 10.1126/science.283.5407.1505
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Reports

Controlling the Morphology of Amorphous Solid Water

K. P. Stevenson, * Greg A. Kimmel, * Z. Dohnálek, * R. Scott Smith, Bruce D. Kay dagger

The morphology of amorphous solid water grown by vapor deposition was found to depend strongly on the angular distribution of the water molecules incident from the gas phase. Systematic variation of the incident angle during deposition using a collimated beam of water led to the growth of nonporous to highly porous amorphous solid water. The physical and chemical properties of amorphous solid water are of interest because of its presence in astrophysical environments. The ability to control its properties in the laboratory may shed light on some of the outstanding conflicts related to this important material.

Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Post Office Box 999, Mail Stop K8-88, Richland, WA 99352, USA.
*   These authors contributed equally to this report.

dagger    To whom correspondence should be addressed. E-mail: bruce.kay{at}pnl.gov

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Importance of Surface Morphology in Interstellar H2 Formation.
L. Hornekaer, A. Baurichter, V. V. Petrunin, D. Field, and A. C. Luntz (2003)
Science 302, 1943-1946
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Science. ISSN 0036-8075 (print), 1095-9203 (online)