Frank Matthews Leslie

Frank Matthews Leslie
Born(1935-03-08)March 8, 1935
Died(2000-06-15)June 15, 2000
Alma materHarris Academy
University College, Dundee
University of Manchester
Known forEricksen–Leslie theory
Leslie coefficients
Leslie angle
SpouseEllen Reoch (1965-2000)
Scientific career
FieldsLiquid crystals
Fluid dynamics
InstitutionsMassachusetts Institute of Technology
Newcastle University
Strathclyde University
Open University
Thesis I. Problems of flow in the open thermosyphon. II. Problems of viscoelasticity of liquids  (1961)
Doctoral advisorJames Lighthill
Bruce Morton

Professor Frank Matthews Leslie FRS FRSE (8 March 1935 – 15 June 2000) was a Scottish mathematical physicist specializing in continuum mechanics. He is remembered for the Ericksen–Leslie Theory which he developed with Jerald Ericksen to describe the viscosity of mesophases associated with liquid crystals. The parameters of this theory are viscosities called "Leslie coefficients", and the angle at which a (flow aligning) nematic orientates with respect to the direction of flow in a steady shear flow is called the "Leslie angle".