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Liquid-crystalline phases are now known to be formed by an ever
growing range of quite diverse materials, these include those of
low molecular weight as well as the novel liquid-crystalline
polymers, such phases can also be induced by the addition of a
solvent to amphiphilic systems leading to lyotropic liquid
crystals. Irrespective of the structure of the constituent
molecules these numerous liquid-cl)'Stailine phases are
characterised by their long range orientational order. In addition
certain phases exhibit elements of long range positional order. Our
understanding, both experimental and theoretical, at the molecular
level of the static behaviour of these fascinating and important
materials is now well advanced. In contrast the influence of the
long range order; both orientational and positional, on the
molecular dynamics in liquid Cl)'Stais is less well understood. In
an attempt to address this situation a NATO Advanced Study
Institute devoted to liquid ctystal dynamics was held at n Ciocco,
Barga, Italy in September 1989. This brought together
experimentalists and theoreticians concerned with the various
dynamical processes occurring in all liquid crystals. The skills of
the participants was impressively wide ranging; they spanned the
experimental techniques used in the study of molecular dynamics,
the nature of the systems investigated and the theoretical models
employed to understand the results. While much was learnt it was
also recognised that much more needed to be done in order to
advance our understanding of molecular dynamics in liquid
Cl)'Stais.
Liquid-crystalline phases are now known to be formed by an ever
growing range of quite diverse materials, these include those of
low molecular weight as well as the novel liquid-crystalline
polymers, such phases can also be induced by the addition of a
solvent to amphiphilic systems leading to lyotropic liquid
crystals. Irrespective of the structure of the constituent
molecules these numerous liquid-cl)'Stailine phases are
characterised by their long range orientational order. In addition
certain phases exhibit elements of long range positional order. Our
understanding, both experimental and theoretical, at the molecular
level of the static behaviour of these fascinating and important
materials is now well advanced. In contrast the influence of the
long range order; both orientational and positional, on the
molecular dynamics in liquid Cl)'Stais is less well understood. In
an attempt to address this situation a NATO Advanced Study
Institute devoted to liquid ctystal dynamics was held at n Ciocco,
Barga, Italy in September 1989. This brought together
experimentalists and theoreticians concerned with the various
dynamical processes occurring in all liquid crystals. The skills of
the participants was impressively wide ranging; they spanned the
experimental techniques used in the study of molecular dynamics,
the nature of the systems investigated and the theoretical models
employed to understand the results. While much was learnt it was
also recognised that much more needed to be done in order to
advance our understanding of molecular dynamics in liquid
Cl)'Stais.
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