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Cover Picture: High Density Amorphous Ice from Cubic Ice (ChemPhysChem 6/2006)
Author(s) -
Loerting Thomas,
Kohl Ingrid,
Schustereder Werner,
Winkel Katrin,
Mayer Erwin
Publication year - 2006
Publication title -
chemphyschem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200690018
Subject(s) - amorphous ice , hexagonal crystal system , ice crystals , amorphous solid , cover (algebra) , snowflake , materials science , crystallography , mineralogy , chemistry , physics , optics , meteorology , snow , mechanical engineering , engineering
The cover picture shows two powder X‐ray diffractograms recorded from two different "ice" samples obtained by pressurizing cubic (red) and hexagonal (black) ice crystals at ≈80 K. Sharp peaks marked with an asterisk are from traces of hexagonal ice. In their Communication on page 1203 Loerting et al. demonstrate that the two types of ice I obtainable at ambient pressure result in two different structural states of high density amorphous ice (HDA) when pressurized to 1.5 GPa at 77 K. The background image is a high‐resolution photograph of a hexagonal snowflake provided by Professor Kenneth G. Libbrecht (California Institute of Technology).