This on-going work is self-funded by the UCL, Oxford and UMIST groups but will bring together two complementary techniques for modelling the optical behaviour
of liquid crystal devices. Both methods will use the modelling obtained in Projects 1 to 10 to determine the complete optic tensor structure in liquid crystal devices. This will be used as the input to the previously developed beam propagation method and finite difference time domain method and will enable the meso/macroscopic modelling of devices in Projects 7-10 to be directly compared to electro-optical measurements from the experimental groups collaborating with the Consortium at HP, ZBD Display, COMIT Faraday, Oxford, Cambridge, Manchester and Exeter.

Previous work in this area is outlined in the papers below.

Ider YZ, Onart S, Lionheart WRB
Uniqueness and reconstruction in magnetic resonance-electrical impedance tomography (MR-EIT)
PHYSIOL MEAS 24 (2): 591-604 MAY 2003

Polydorides N, Lionheart WRB
A Matlab toolkit for three-dimensional electrical impedance tomography: a contribution to the Electrical Impedance and Diffuse Optical Reconstruction Software project
MEAS SCI TECHNOL 13 (12): 1871-1883 DEC 2002

Blakeney SL, Day SE, Stewart JN
Determination of unknown input polarisation using a twisted nematic liquid crystal display with fixed components
OPT COMMUN 214 (1-6): 1-8 DEC 15 2002

Kriezis EE, Newton CJP, Spiller TP, et al.
Three-dimensional simulations of light propagation in periodic liquid-crystal microstructures
APPL OPTICS 41 (25): 5346-5356 SEP 1 2002

Brown CV, Kriezis EE, Elston SJ
Optical diffraction from a liquid crystal phase grating
J APPL PHYS 91 (6): 3495-3500 MAR 15 2002

Judge LA, Kriezis EE, Elston SJ
Field driven helix unwinding in thick AFLC cells
MOL CRYST LIQ CRYST 366: 2513-2523 2001

Said SM, Kriezis EE, Elston SJ
Modelling switching and optics in ferroelectric liquid crystal microdisplays
MOL CRYST LIQ CRYST 368: 3925-3933 2001

Smith PJ, Taylor CM, McCabe EM, et al.
Switchable fiber coupling using variable-focal-length microlenses
REV SCI INSTRUM 72 (7): 3132-3134 JUL 2001

Kriezis EE, Elston SJ
Optical behaviour of display performance enhancement films
J MOD OPTIC 48 (8): 1319-1328 JUL 2001

Kriezis EE, Elston SJ
Beam propagation method modelling of zenithal bistable nematic devices: Analysis and assessment
MOL CRYST LIQ CRYST 359: 597-608 2001

Kriezis EE, Elston SJ
Numerical modelling of multi-dimensional liquid crystal optics: Finite-difference time-domain method
MOL CRYST LIQ CRYST 359: 609-619 2001

Kriezis EE, Elston SJ
Wide-angle beam propagation method for liquid-crystal device calculations
APPL OPTICS 39 (31): 5707-5714 NOV 1 2000

Kriezis EE, Filippov SK, Elston SJ
Light propagation in domain walls in ferroelectric liquid crystal devices by the finite-difference time-domain method
J OPT A-PURE APPL OP 2 (1): 27-33 JAN 2000

Commander LG, Day SE, Selviah DR
Variable focal length microlenses
OPT COMMUN 177 (1-6): 157-170 APR 15 2000

Kolehmainen V, Arridge SR, Lionheart WRB, et al.
Recovery of region boundaries of piecewise constant coefficients of an elliptic PDE from boundary data
INVERSE PROBL 15 (5): 1375-1391 OCT 1999

Gardner MC, Kilpatrick RE, Day SE, et al.
Experimental verification of a computer model for optimizing a liquid crystal display for spatial phase modulation
J OPT A-PURE APPL OP 1 (2): 299-303 MAR 1999

Arridge SR, Lionheart WRB
Nonuniqueness in diffusion-based optical tomography
OPT LETT 23 (11): 882-884 JUN 1 1998

Lionheart WRB
Boundary shape and electrical impedance tomography
INVERSE PROBL 14 (1): 139-147 FEB 1998

DiPasquale F, Fernandez FA, Day SE, et al.
Two-dimensional finite-element modeling of nematic liquid crystal devices for optical communications and displays
IEEE J SEL TOP QUANT 2 (1): 128-134 APR 1996