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Details for article 10 of 18 found articles
| Title: |
Nematic colloidal suspensions of V2O5 in water—or Zocher phases revisited |
| Author: |
Davidson, P. Garreau, A. Livage, J. |
| Appeared in: |
Liquid crystals |
| Paging: | Volume 16 (1994) nr. 5 pages 905-910 |
| Year: |
1994-05-01 |
| Contents: |
Vanadium pentoxide gels and sols, V2O5, nH2O, exhibit a ribbon-like structure. They form colloidal suspensions (also called Zocher phases or 'tactophases') which are clearly shown here to present a homogeneous lyotropic nematic phase for concentrations larger than ≈0·12mol 1-1. Classical threaded textures were observed in polarized light and small angle X-ray scattering patterns of oriented samples displayed a diffuse spot quite comparable to that of the Tobacco Mosaic Virus. For a sample of volume fraction φ ≈ 5 per cent, the V2O5 ribbons are separated by about 160 Å, so that the cross sectional area of the ribbons is about 1300 Å2, in agreement with previous estimations by electron microscopy. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 10 of 18 found articles
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