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Negative Poisson's ratios for extreme states of matter
Honeywell International, Honeywell Technology Center, Morristown, NJ 07962-1021, United States.
Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, 36036-330, Mina Gerais, Brazil.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Computational Physics .
Honeywell International, Honeywell Technology Center, Morristown, NJ 07962-1021, United States.
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2000 (English)In: Science, ISSN 0036-8075, Vol. 288, no 5473, 2018-2022 p.Article in journal (Refereed) Published
Abstract [en]

Negative Poisson's ratios are predicted for body-centered-cubic phases that likely exist in white dwarf cores and neutron star outer crusts, as well as those found for vacuumlike ion crystals, plasma dust crystals, and colloidal crystals (including certain virus crystals). The existence of this counterintuitive property, which means that a material laterally expands when stretched, is experimentally demonstrated for very low density crystals of trapped ions. At very high densities, the large predicted negative and positive Poisson's ratios might be important for understanding the asteroseismology of neutron stars and white dwarfs and the effect of stellar stresses on nuclear reaction rates. Giant Poisson's ratios are both predicted and observed for highly strained coulombic photonic crystals, suggesting possible applications of large, tunable Poisson's ratios for photonic crystal devices.

Place, publisher, year, edition, pages
2000. Vol. 288, no 5473, 2018-2022 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-47631DOI: 10.1126/science.288.5473.2018OAI: diva2:268527
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-14

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