Inorganic nanotubes stabilized by ion size asymmetry: energy calculations for AgI clusters

Article Abstract:

The energy of AgI clusters containing up to 10(super 3) ions are calculated using an accurate 'rigid ion' potential AgI developed by Parrinello, Rahman, and Vashishta. It is argued that the enhanced stability of such structures in AgI clusters arises from the same ion asymmetry that stabilizes the wurtzile structure in the bulk crystal.

Author: Wotton, Adam, Harrowell, Peter
Science & research, Research, Photochemical research, Nanotubes, Isoelectric focusing

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Organization of coordination polyhedra in an amorphous binary alloy

Article Abstract:

The structure of a simulated amorphous alloy consisting of a binary mixture whose interaction is chosen to resemble those between a transition metal and a metalloid is examined. The findings revealed that the local structure of the low-temperature amorphous A75B25 mixture is dominated by a handful of regular coordination polyhedra.

Author: Harrowell, Peter, Fernandez, Julian R.
Primary Metal Manufacturing, PRIMARY METAL INDUSTRIES, Amorphous Metals, Transition metals, Chemistry, Physical and theoretical, Physical chemistry, Metallic glasses, Metalloids

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Crystal bridges, tetratic order, and elusive equilibria: the role of structure in lubrication films

Article Abstract:

The crystal bridges, tetratic order, as well as the elusive equilibria of thin dodecane films confined between mica surfaces are presented. The analysis reveals that the structure plays a very important role in determining the properties of the lubrication films.

Author: Harrowell, Peter, Jabbarzadeh, A., Tanner, R.I.
Molecular dynamics, Crystallization, Lubrication and lubricants, Lubrication, Mechanical properties, Mica

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Subjects list: Analysis, Structure
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