Biaxial Nematic Liquid Crystals:reducing symmetry to increase order and develop novel applications
Lead Research Organisation:
University of York
Department Name: Chemistry
Abstract
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Publications
Mandle RJ
(2015)
Relationship between molecular association and re-entrant phenomena in polar calamitic liquid crystals.
in The journal of physical chemistry. B
Mandle RJ
(2016)
The Dependency of Nematic and Twist-bend Mesophase Formation on Bend Angle.
in Scientific reports
Mandle RJ
(2016)
A twist-bend nematic to an intercalated, anticlinic, biaxial phase transition in liquid crystal bimesogens.
in Soft matter
Mandle R
(2016)
Intercalated soft-crystalline mesophase exhibited by an unsymmetrical twist-bend nematogen
in CrystEngComm
Mandle R
(2016)
An interplay between molecular pairing, smectic layer spacing, dielectric anisotropy and re-entrant phenomena in ?-alkenyloxy cyanobiphenyls
in Liquid Crystals
Mandle R
(2015)
Self-organisation through size-exclusion in soft materials
in Journal of Materials Chemistry C
Mandle R
(2014)
Handbook of Liquid Crystals
Mandle R
(2014)
Handbook of Liquid Crystals
Kaur S
(2011)
Nonstandard electroconvection in a bent-core oxadiazole material.
in Physical review. E, Statistical, nonlinear, and soft matter physics
Kaur S
(2012)
Understanding the distinctive elastic constants in an oxadiazole bent-core nematic liquid crystal.
in Physical review. E, Statistical, nonlinear, and soft matter physics
Description | Professor Helen Gleeson of Manchester University was the lead PI, and she holds the project findings. New materials and design methods have been developed, in particular for liquid crystalline oxadiazoles. We have demonstrated that this molecular motif supports a range of mesophase types, from nematic, to smectic, to columnar phases. However, although the literature reports the formation of the biaxial nematic phase in certain materials, we cannot prove this conclusively correct. Nevertheless, we have also discovered a number of new phenomenon associated with chirality, which we deem to be of future interest, with potential for device applications, in areas additional to optics. |
Exploitation Route | As noted above, applications in novel displays and sensors, with useful guidelines for the development of material design and synthesis. |
Sectors | Aerospace, Defence and Marine,Chemicals,Electronics |
Description | Discovery of a new mesophase system that has unusual optical properties, and potentially mechanical properties which could lead to the development of mechnoelectrical switches. |
First Year Of Impact | 2010 |
Sector | Aerospace, Defence and Marine,Chemicals,Electronics |
Impact Types | Economic |
Description | EPSRC |
Amount | £123,894 (GBP) |
Funding ID | R153680 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 02/2014 |
End | 01/2015 |
Description | CAPE University of Cambridge |
Organisation | University of Cambridge |
Department | Centre for Advanced Photonics and Electronics (CAPE) |
Country | United Kingdom |
Sector | Academic/University |
PI Contribution | Materials - dyes and liquid crystals - for test purposes |
Collaborator Contribution | Evaluation of materials in various devices and conditions |
Impact | Just started so no outcomes yet |
Start Year | 2016 |
Description | Leeds University |
Organisation | University of Leeds |
Department | School of Physics and Astronomy |
Country | United Kingdom |
Sector | Academic/University |
PI Contribution | Synthesis of materials for physical studies |
Collaborator Contribution | Physical studies on materials provided by York University. Studies form the basis of ne applications of materials in devices. |
Impact | Raman Scattering Studies of Order Parameters in Liquid Crystalline Dimers Exhibiting the Nematic and Twist-bend Nematic Phases, Z. Zhang, V.P. Panov, M. Nagaraj, R.J. Mandle, J.W. Goodby, G.R. Luckhurst, J.C. Jones and H.F. Gleeson, J. Mater. Chem. C, 2015, 3, 10007-10016, DOI: 10.1039/c5tc02174j. |
Start Year | 2015 |