Negative Poisson's ratios in siliceous zeolite MFI-silicalite

Carmen Sanchez-Valle, Zoe A.D. Lethbridge, Stanislav V. Sinogeikin, Jennifer J. Williams, Richard I. Walton, Kenneth E. Evans, Jay D. Bass

Research output: Contribution to journalArticle

Abstract

Brillouin scattering measurements of the single-crystal elastic properties of the as-made zeolite silicalite ∫ (C3 H7)4 NF∫4 [Si96 O192] -MFI provides the first experimental evidence for on-axis negative Poisson's ratios (auxeticity) in a synthetic zeolite structure. MFI laterally contracts when compressed and laterally expands when stretched along x1 and x2 directions in the (001) plane (12 =-0.061, 21 =-0.051). The aggregate Poisson's ratio of MFI, although positive, has an anomalously low value =0.175 (3) compared to other silicate materials. These results suggest that the template-free MFI-silicalite [Si96 O192] might have potential applications as tunable sieve where molecular discriminating characteristics are adjusted by application of stress along specific axes.

Original languageEnglish (US)
Article number184503
JournalJournal of Chemical Physics
Volume128
Issue number18
DOIs
StatePublished - May 26 2008

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Zeolites
Poisson ratio
Brillouin scattering
Silicates
Molecular sieves
absorbents
silicates
templates
elastic properties
Single crystals
single crystals
scattering
Direction compound

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Sanchez-Valle, C., Lethbridge, Z. A. D., Sinogeikin, S. V., Williams, J. J., Walton, R. I., Evans, K. E., & Bass, J. D. (2008). Negative Poisson's ratios in siliceous zeolite MFI-silicalite. Journal of Chemical Physics, 128(18), [184503]. https://doi.org/10.1063/1.2912061

Negative Poisson's ratios in siliceous zeolite MFI-silicalite. / Sanchez-Valle, Carmen; Lethbridge, Zoe A.D.; Sinogeikin, Stanislav V.; Williams, Jennifer J.; Walton, Richard I.; Evans, Kenneth E.; Bass, Jay D.

In: Journal of Chemical Physics, Vol. 128, No. 18, 184503, 26.05.2008.

Research output: Contribution to journalArticle

Sanchez-Valle, C, Lethbridge, ZAD, Sinogeikin, SV, Williams, JJ, Walton, RI, Evans, KE & Bass, JD 2008, 'Negative Poisson's ratios in siliceous zeolite MFI-silicalite', Journal of Chemical Physics, vol. 128, no. 18, 184503. https://doi.org/10.1063/1.2912061
Sanchez-Valle C, Lethbridge ZAD, Sinogeikin SV, Williams JJ, Walton RI, Evans KE et al. Negative Poisson's ratios in siliceous zeolite MFI-silicalite. Journal of Chemical Physics. 2008 May 26;128(18). 184503. https://doi.org/10.1063/1.2912061
Sanchez-Valle, Carmen ; Lethbridge, Zoe A.D. ; Sinogeikin, Stanislav V. ; Williams, Jennifer J. ; Walton, Richard I. ; Evans, Kenneth E. ; Bass, Jay D. / Negative Poisson's ratios in siliceous zeolite MFI-silicalite. In: Journal of Chemical Physics. 2008 ; Vol. 128, No. 18.
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