Hostname: page-component-7bb8b95d7b-pwrkn Total loading time: 0 Render date: 2024-09-21T11:04:49.413Z Has data issue: false hasContentIssue false
  • English
  • Français

A Vibrational Investigation of Crystal Nucleation and Growth from a Physically Confined and Supercooled Liquid

Published online by Cambridge University Press:  15 February 2011

R. Mu ,
D. O. Henderson ,
Z. Pan  and
Y. Xue
R. Mu
Affiliation:
Department of Physics, Fisk University, Nashville, TN 37208
D. O. Henderson
Affiliation:
Department of Physics, Fisk University, Nashville, TN 37208
Z. Pan
Affiliation:
Department of Physics, Fisk University, Nashville, TN 37208
Y. Xue
Affiliation:
Department of Physics, Fisk University, Nashville, TN 37208
Get access

Abstract

Temperature dependent Raman measurements were conducted on bulk and the confined 2,4,6-trinitrotoluene (TNT) in 2.5, 5, 10, and 20 nm porous silica. Two bands at 23 and 190 cm−1 were chosen to evaluate the structure and the melting and freezing transitions of the confined TNT in pores. The results show that the solid phase TNT confined in larger pores (dp > 5 nm) forms conventional solid TNT structure, while the TNT restricted in small pores has no freezing and melting transition characteristics. The results also suggest that the freezing transition of the confined TNT starts at the pore center and the confined TNT maintains its interconnectivity during the freezing transition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 366: Symposium N – Dynamics in Small Confining Systems , 1994 , 289
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Awschalom, D.D., Warnock, J., Phys. Rev. B 35, 6779 (1987); J. Warnock, D.D. Awschalom, and M.W. Shafer, Phys. Rev. Lett. 57, 1753 (1986).Google Scholar
2. Mu, R. and Malhotra, V.M., Phys. Rev. B 44, 4296 (1991).Google Scholar
3. Jackson, C.L. and Mckenna, G.B., J. Chem. Phys. 93, 9002 (1990).Google Scholar
4. Sokol, P.E., Ma, W.J., Herwig, K.W., Snow, W.M., Wang, Y., Koplik, J., Banavar, J.R., Appl. Phys. Lett. 61, 777 (1992).Google Scholar
5. Scherer, George W., J. Non-cryst. Solids 155, 1 (1993).Google Scholar
6. Ma, W.J., Banavar, J.R., and Koplik, J., J. Chem. Phys. 97, 485 (1992).Google Scholar
7. Brodka, A. and Zerda, T.W., J. Chem. Phys. 97, 5676 (1992).Google Scholar
8. Mu, R., Jin, F., Morgan, S.H., Henderson, D.O., and Silberman, E., J. Chem. Phys. 100, 7749 (1994); R. Mu, D.O. Henderson, F. Jin in Determining Nanoscale Physical Properties of Materials by Microscopy and Spectroscopy, edited by M. Sarikaya, M. Isaacson, and H. K. Wickramasinghe (Mater. Res. Soc. Proc. 332, Pittsburgh, PA, 1994)pp. XXX-000.Google Scholar
9. Klafter, J. and Drake, J.M., Molecular Dynamics in Restricted Geometries (John Wiley & Sons, New York, 1989).Google Scholar
10. Mu, R., Xue, Y., Henderson, D.O., Phys. Rev. B (to be submitted).Google Scholar
11. Mu, R., Xue, Y., Henderson, D.O. in Dynamics in Small Confining Systems, edited by Drake, J.M. et al. (Mater. Res. Soc. Proc. XXX, Pittsburgh, PA, 1995) pp. XXX-000.Google Scholar
12. LeCalve, N., Romain, F., and Pasquier, B., J. Raman Spectrosc. 8, 239–43 (1979).Google Scholar
13. Stewart, J.J.P., Bosco, S.R. and Carper, W.R., Spectrochimica Acta 42A, 13 (1986).Google Scholar