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Core crystallization and pile-up in the cooling sequence of evolving white dwarfs.
Nature
January 2019
Department of Physics, University of Warwick, Coventry, UK.
White dwarfs are stellar embers depleted of nuclear energy sources that cool over billions of years. These stars, which are supported by electron degeneracy pressure, reach densities of 10 grams per cubic centimetre in their cores. It has been predicted that a first-order phase transition occurs during white-dwarf cooling, leading to the crystallization of the non-degenerate carbon and oxygen ions in the core, which releases a considerable amount of latent heat and delays the cooling process by about one billion years.
View Article and Find Full Text PDFAstronomy. Embers of the distant past.
Science
November 2012
Department of Astronomy, University of Texas, 2511 Speedway, Austin, TX 78712, USA.
Fluorescence lifetime imaging of quantum dot labeled DNA microarrays.
Int J Mol Sci
April 2009
School of Physics and Astronomy, The University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh EH9 3JZ, Scotland, UK.
Quantum dot (QD) labeling combined with fluorescence lifetime imaging microscopy is proposed as a powerful transduction technique for the detection of DNA hybridization events. Fluorescence lifetime analysis of DNA microarray spots of hybridized QD labeled target indicated a characteristic lifetime value of 18.8 ns, compared to 13.
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