Nematics with Quenched Disorder: How Long Will It Take to Heal?

T. Bellini, M. Buscaglia, C. Chiccoli, F. Mantegazza, P. Pasini, and C. Zannoni
Phys. Rev. Lett. 88, 245506 – Published 4 June 2002
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Abstract

Nematics with quenched disorder have been repeatedly predicted to form glass phases. Here we present turbidity experiments and computer simulations aimed at studying glass key features such as dynamics and history dependence in randomly perturbed nematics. Electric field-cooling alignment has been employed to prepare samples in suitably oriented starting states. Remarkable remnant order and slow dynamics are found both by experiment and simulations, indicating that random disorder can, by itself, induce a nematic glass state even without perturber restructuring.

  • Received 13 February 2002

DOI:https://doi.org/10.1103/PhysRevLett.88.245506

©2002 American Physical Society

Authors & Affiliations

T. Bellini1, M. Buscaglia1, C. Chiccoli2, F. Mantegazza3, P. Pasini2, and C. Zannoni4

  • 1INFM, Dipartimento di Chimica e Biochimica Medica, Università di Milano, 20133 Milano, Italy
  • 2Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Via Irnerio 46, 40126 Bologna, Italy
  • 3INFM, Dipartimento di Medicina Sperimentale, Università di Milano “Bicocca,” 20052 Monza (MI), Italy
  • 4Dipartimento di Chimica Fisica and INSTM, Università, V. le Risorgimento 4, 40136 Bologna, Italy

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Vol. 88, Iss. 24 — 17 June 2002

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