Trees to trap photons
Article Abstract:
Researchers have been able to use low-power infrared light to instigate the cis- to trans- isomerization, in which a photoisomerizable molecule is twisted around a nitrogen-nitrogen double bond. Before the isomerization took place, the photoisomerizable molecule was attached to the middle of a spherical cavity created by a dendrimer, a highly branched molecule. This research indicates that dendrimers act as both light-harvesting antennas and prisons for vibrational energy.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Ancient stunted trees on cliffs
Article Abstract:
The ages and radial growth rates of trees on cliffs in the US and in wester Europe were studied to determine whether a woodland growing on vertical cliffs of the Niagara escarpment in southern Canada is part of a previously undetected global pattern. Vertical cliffs were found to support populations of widely spaced, exceptionally old trees. The ages of trees may give an indication of age and growth rates of entire plant communities on cliffs.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Talking trees tell tales
Article Abstract:
Issues are presented concerning the spread of the Austronesian language family across the Pacific. Evidence that the spread of human settlements in the Pacific was completed over a period of 2,100 years is discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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