High speed multi-level phase devices for active spatial control
Lead Research Organisation:
University of Hull
Department Name: Chemistry
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
People |
ORCID iD |
Georg Hans Mehl (Principal Investigator) |
Publications
Aluculesei A
(2019)
1H NMR study of molecular order and dynamics in the liquid crystal CB-C9-CB.
in Physical chemistry chemical physics : PCCP
Wang X
(2020)
A Compact Full 2p Flexoelectro-Optic Liquid Crystal Phase Modulator
in Advanced Materials Technologies
Yip WC
(2020)
Analog modulation by the flexoelectric effect in liquid crystals.
in Applied optics
Salili SM
(2016)
Anomalous Increase in Nematic-Isotropic Transition Temperature in Dimer Molecules Induced by a Magnetic Field.
in Physical review letters
Wang X
(2018)
Characterization of large tilt-angle flexoelectro-optic switching in chiral nematic liquid crystal devices
in Liquid Crystals
Yu H
(2020)
Chirality enhancement in macro-chiral liquid crystal nanoparticles
in Materials Horizons
Cukrov G
(2016)
Comparative analysis of anisotropic material properties of uniaxial nematics formed by flexible dimers and rod-like monomers
in Liquid Crystals
Merkel K
(2019)
Dielectric response of electric-field distortions of the twist-bend nematic phase for LC dimers.
in The Journal of chemical physics
Zavvou E
(2023)
Dipole-dipole correlations in the nematic phases of symmetric cyanobiphenyl dimers and their binary mixtures with 5CB
in Soft Matter
Gorecka E
(2015)
Do the short helices exist in the nematic TB phase?
in Liquid Crystals
Stevenson W
(2018)
Dynamic calorimetry and XRD studies of the nematic and twist-bend nematic phase transitions in a series of dimers with increasing spacer length
in Physical Chemistry Chemical Physics
Fells JAJ
(2022)
Dynamic phase measurement of fast liquid crystal phase modulators.
in Optics express
Fells JAJ
(2019)
Dynamic response of large tilt-angle flexoelectro-optic liquid crystal modulators.
in Optics express
Bacchiocchi C
(2018)
EPR study of the polydomain structure of the twist-bend nematic phase of CB9CB in the bulk
in Liquid Crystals
Wang X
(2019)
Fast and low loss flexoelectro-optic liquid crystal phase modulator with a chiral nematic reflector.
in Scientific reports
Fells JAJ
(2018)
Flexoelectro-optic liquid crystal analog phase-only modulator with a 2p range and 1 kHz switching.
in Optics letters
Parsouzi Z
(2016)
Fluctuation Modes of a Twist-Bend Nematic Liquid Crystal
in Physical Review X
Parsouzi Z
(2016)
Light scattering study of the "pseudo-layer" compression elastic constant in a twist-bend nematic liquid crystal.
in Physical chemistry chemical physics : PCCP
Stevenson W
(2020)
Macroscopic chirality of twist-bend nematic phase in bent dimers confirmed by circular dichroism
in Journal of Materials Chemistry C
Jin Y
(2020)
Millisecond Optical Phase Modulation Using Multipass Configurations with Liquid-Crystal Devices
in Physical Review Applied
Merkel K
(2021)
Molecular biaxiality determines the helical structure - infrared measurements of the molecular order in the nematic twist-bend phase of difluoro terphenyl dimer.
in Physical chemistry chemical physics : PCCP
Stevenson WD
(2017)
Molecular organization in the twist-bend nematic phase by resonant X-ray scattering at the Se K-edge and by SAXS, WAXS and GIXRD.
in Physical chemistry chemical physics : PCCP
Description | the project is formally completed, however the collaborations between the teams is still ongoing. high birefringent materials and mixtures are supplied to the collaborating teams. High dielectric anisotropy materials and mixtures have been supplied in line with the work plan. On the way we have established a much better understanding of the twist bend nematic phase, The collaborating engineering teams have used our materials to design and construct new devices. In a number of collaborative publications the fast switching behaviour in flexoelectric properties focused devices was demonstrated. Furthermore, in collaboration with the project partners a number of prototype devices were constructed based on the materials synthesized by us; the focus being on fast switching 2pi flexo-electric light modulators. |
Exploitation Route | The collaborators in Oxford and Cambridge have constructed new devices and reported this in the literature; currently the work on the project is ongoing funded by other sources. We have provided and reported materials design and design rules which advances the field and can be used by others. Further collaborations (industry and academia) are planned. to exploit the results. |
Sectors | Chemicals,Digital/Communication/Information Technologies (including Software),Electronics |
Description | costshare exchange grant |
Amount | £24,000 (GBP) |
Funding ID | IE161650 |
Organisation | The Royal Society |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 03/2017 |
End | 03/2019 |
Title | CD spectrometry to investigate spontaneous chirality formation in liquid crystals |
Description | The station B23 at Diamond Light Source Ltd. permits the collection of data in thin films where sample are positioned horizontally. This is critical as flow induced by gravity in vertically positioned films is avoided. Together with temperature control of macroscopically aligned films this permits the recording of signal related to the formation of chiral superstructures in non-chiral molecules. |
Type Of Material | Improvements to research infrastructure |
Year Produced | 2020 |
Provided To Others? | Yes |
Impact | A direct measurement method for emerging chirality in liquid crystal thin films. |
Description | flexoelectric materials |
Organisation | University of Cambridge |
Department | Department of Engineering |
Country | United Kingdom |
Sector | Academic/University |
PI Contribution | we provide materials to be investigated in the common project |
Collaborator Contribution | they provide us with data to optimize materials design |
Impact | no t yet, the project started 9 months ago |
Start Year | 2015 |