Sublimation from icy jets as a probe of the interstellar volatile content of comets
Article Abstract:
High-resolution observations of emissions from the molecules HNC, DCN and HDO associated with comet Hale-Bopp indicate the presence of arc-like structures, or icy jets, offset from but near to the nucleus. There is currently little data available about the stability of HNC against isomerization to HCN as it diffuses through warm ice, water and dust, but the rapid radial variability of the HNC/HCN ratio indicates that some alteration takes place. The most simple explanation for the high D/H ratios of the Hale-Bopp jets is the survival of large reservoirs of presolar volatiles that did not equilibrate with the surrounding nebular gas.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Viscoelastic effects in the spreading of liquids
Article Abstract:
A study was conducted to provide direct evidence for the existence of a wetting ridge in non-rigid solids. Scanning white-light interferometric microscopy was used to study the topographical modification of a silicone elastomer substrate with a low shear modulus. Results showed that the spreading of a liquid on an elastomer is dependent on viscoelastic dissipation in the wetting ridge of the substrate close to the triple line.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Volatile times for ionic liquids
Article Abstract:
Involatility is assumed to be a properly common to all ionic liquids that do not undergo thermal decomposition. The researcher Earle and colleagues change this assumption, showing that certain ionic-liquid structures known for their high thermal stability, in particular bis{(trifluoromethyl)sulphonyl} amide salts, can be evaporated and recondensed under relatively mild conditions.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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