Skip to main content
Menu
The outside of the Thom Building

Associate Professor

Stephen Morris DPhil

Associate Professor of Engineering Science

Tutorial Fellow at Jesus College

Academic Director, Professional Development Programme in Engineering

Chair, Oxford Photonics Network Committee

Photonics Lead, ESA Lab@Oxford

Biography

Stephen is an Associate Professor in Engineering Science and a Tutorial Fellow at Jesus College. He runs the Soft Matter Photonics Research Group with Professor Steve Elston, which conducts research on a range of optoelectronic technologies based upon soft materials such as liquid crystals and polymers. Stephen has published more than 110 papers in peer-reviewed journals (with publications in journals such as Nature Photonics, Nature Materials, Nature Communications, Advanced Materials, and Nano Letters). He has also authored/co-authored five book chapters and filed 10 patents.

Stephen is currently the Chair of the Oxford Photonics Network Committee and a member of the Space Network. He currently leads the Photonics activities in the recently formed ESA Lab@Oxford and is the Academic Director of the Technology and AI programme that is run by the Department for Continuing Education. In addition to his roles at Oxford, Stephen is also an Associate Editor of the Journal, Optical Materials. He was awarded a PhD in Engineering from the University of Cambridge and has previously held a Royal Society University Research Fellowship and an Official Fellowship of St Catharine’s College, Cambridge, where he was the Director of Studies in Physics for Part I. 

Roles & Responsibilities

Awards and Fellowships

  • 2011 - 2016 Royal Society University Research Fellowship
  • 2014 - The Ben Sturgeon Prize (Society for Information Displays
  • 2012 - Runner-up prize - ERA Foundation Entrepreneur’s award (Royal Academy of Engineering)
  • 2010 - Young Scientist award (British Liquid Crystal Society)
  • 2007 - 2013 - Fellow of St Catharine's College, Cambridge. 

Most Recent Publications

A compact full 2π flexoelectro-optic liquid crystal phase modulator

Wang X et al. (2020), Advanced Materials Technologies, 5(12)

Electrically tunable printed bifocal liquid crystal microlens arrays

Kamal W et al. (2020), Advanced Materials Interfaces, 7(16)

Electrically-tunable positioning of topological defects in liquid crystals

Sandford O’Neill JJ et al. (2020), Nature Communications, 11

View all

Research Interests

Stephen runs the Soft Matter Photonics research group with Professor Steve Elston, which focuses on the design and development of new opto-electronic devices and components that are based upon soft materials such as liquid crystals and polymers. The research sits at the interface between engineering, materials science and physics and includes the development of new technologies for a range of applications. The group's research is largely experimental in nature, but is also underpinned by theoretical studies that are led by Professor Steve Elston.

Examples of some of the technologies that are currently the focus of the research:

  • Tuneable Diffractive Optic Elements for AR/VR 
  • Soft Optical Elements
  • Printed Smart Windows 
  • Printed Liquid Crystal Microlens Arrays
  • Optical Phase Modulators
  • Analogue Speckle Reducers
  • Thin-film Lasers
  • Liquid Crystal Concentrators
  • Liquid Crystals for THz Modulators

Manufacturing processes that we are currently working include:

  • Aberration-corrected laser writing in polymerisable functional resins
  • Precision-printing of soft materials

Current Projects

  • 3D Direct laser writing in polymerisable liquid Crystal resins
  • Stimuli-responsive Laser Speckle Reducers
  • Inkjet Printed Liquid Crystal Polymer Components
  • Printed Smart Window Technology
  • Liquid Crystal Concentrators for Communications
  • Optical Phase Modulators
  • Tunable Liquid Crystal Waveguides
  • Laser-inscribed alignment of Liquid Crystal Conjugated Polymers
  • Laser-induced Metaphotonic Materials

Most Recent Publications

A compact full 2π flexoelectro-optic liquid crystal phase modulator

Wang X et al. (2020), Advanced Materials Technologies, 5(12)

Electrically tunable printed bifocal liquid crystal microlens arrays

Kamal W et al. (2020), Advanced Materials Interfaces, 7(16)

Electrically-tunable positioning of topological defects in liquid crystals

Sandford O’Neill JJ et al. (2020), Nature Communications, 11

View all

Publications

2021

Room Temperature Wafer-Scale Synthesis of Highly Transparent, Conductive CuS Nanosheet Films via a Simple Sulfur Adsorption-Corrosion Method

John Hong, Byung-Sung Kim, Bo Hou, Sangyeon Pak, Taehun Kim, A-Rang Jang, Yuljae Cho, Sanghyo Lee, Geon-Hyoung An, Jae Eun Jang, Stephen M. Morris, Jung Inn Sohn, and SeungNam Cha ACS Appl. Mater. Interfaces (2021) 

2020

Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation

Yuping Shi, Patrick S. Salter, Mo Li, Robert A. Taylor, Steve J. Elston, Stephen M. Morris, Donal D. C. Bradley Advanced Functional Materials (2020)

A Compact Full 2π Flexoelectro-Optic Liquid Crystal Phase Modulator

Xiuze Wang, Julian A. J. Fells, Yuping Shi, Taimoor Ali, Chris Welch, Georg H. Mehl, Timothy D. Wilkinson, Martin J. Booth, Stephen M. Morris, and Steve J. Elston Adv. Mater. Technol. 2000589 (2020)

Millisecond optical phase modulation using multipass configurations with liquid crystal devices

Yihan Jin, Steve J. Elston, Julian A. J. Fells, Martin J. Booth, Chris Welch, Georg H. Mehl, and Stephen M. Morris Physical Review Applied 14, 024007 (2020)

Electrically Tunable Printed Bifocal Liquid Crystal Microlens Arrays

Waqas Kamal, Jia‐De Lin, Steve J. Elston, Taimoor Ali, Alfonso A. Castrejón‐Pita, and Stephen M. Morris Advanced Materials Interfaces 7, 2000578 (2020)

Transmissive flexoelectro-optic liquid crystal optical phase modulator with 2π modulation

Xiuze Wang, Julian A. J. Fells, Taimoor Ali, Jia-De Lin,  Chris Welch, Georg H. Mehl, Timothy D. Wilkinson, Martin J. Booth, Stephen M. Morris, and Steve J. Elston AIP Advances 10, 055011 (2020)

Electrically-tunable positioning of topological defects in liquid crystals

John J. Sandford O’Neill, Patrick S. Salter, Martin J. Booth, Steve J. Elston, Stephen M. Morris Nature Communications 11, 2203 (2020) 

A Thin‐Film Flexible Defect‐Mode Laser

Taimoor Ali, Jia‐De Lin, Benjamin Snow, Xiuze Wang, Steve J. Elston, Stephen M. Morris Advanced Optical Materials 8, 1901891 (2020) 

Active Metamaterials with Negative Static Electric Susceptibility

Flynn Castles, Julian A. J. Fells, Dmitry Isakov, Stephen M. Morris, Andrew A. R. Watt, Patrick S. Grant Advanced Materials (2020)

Plasmonic Effects of Dual-Metal Nanoparticle Layers for High-Performance Quantum Dot Solar Cells

John Hong, Byung-Sung Kim, Bo Hou, Yuljae Cho, Sang Hyo Lee, Sangyeon Pak, Stephen M. Morris, Jung Inn Sohn, and SeungNam Cha Plasmonics 15, 1007–1013 (2020).

2019

Direct Epitaxial Synthesis of Selective Two-Dimensional Lateral Heterostructures

Juwon Lee, Sangyeon Pak,Young-Woo Lee,Youngsin Park, A-Rang Jang, John Hong, Yuljae Cho, Bo Hou, Sanghyo Lee, Hu Young Jeong, Hyeon Suk Shin, Stephen M. Morris, SeungNam Cha, Jung Inn Sohn, Jong Min Kim ACS Nano 13, 13047-13055 (2019)

Electrochemically active binary anion compounds with tailored oxygen vacancy for energy storage system

John Hong, Juwon Lee, Young-Woo Lee, Woon Bae Park, Docheon Ahn, Jong Bae Park, Sangyeon Pak, Jaeyoon Baik, Stephen M. Morris, SeungNam Cha, Kee-Sun Sohn, Jung Inn Sohn, Journal of Power Sources, 444, 227301 (2019)

Dynamic response of large tilt-angle flexoelectro-optic liquid crystal modulators

Julian A. J. Fells, Chris Welch, Wing C. Yip, Steve J. Elston, Martin J. Booth, Georg H. Mehl, Timothy D. Wilkinson, and Stephen M. Morris Opt. Express 27(11), 15184-15193 (2019) 

Fast and low loss flexoelectro-optic liquid crystal phase modulator with a chiral nematic reflector

Xiuze Wang, Julian A. J. Fells, Wing C. Yip, Taimoor Ali, Jia-de Lin, Chris Welch, Georg H. Mehl, Martin J. Booth, Timothy D. Wilkinson, Stephen M. Morris & Steve J. Elston Scientific Reports 9, 7016 (2019)

Robust measurement of flexoelectro-optic switching with different surface alignments

John J. Sandford O’Neill, Julian A. J. Fells, Chris Welch, Georg Mehl, Wing C. Yip, Timothy D. Wilkinson, Martin J. Booth, Steve J. Elston, and Stephen M. Morris  Journal of Applied Physics 125, 093104 (2019)

Surface Functionalization-induced Photoresponse Characteristics of Monolayer MoS2 for Fast Flexible Photodetectors

S. Pak, A. Jang, J. Lee, J. Hong, P. Giraud, S. Lee , Y. Cho, G. Ah, Y. Lee, H. S. Shin, S. M. Morris, S. Cha, J. I. Sohn and J. M. Kim, Nanoscale 11, 4726-4734 (2019)

Chalcogenide Solution-Mediated Activation Protocol for Scalable and Ultrafast Synthesis of Single-Crystalline 1-D Copper Sulfide for Supercapacitor

John Hong,  Byung-Sung Kim,  Seung-Mo Yang,  A-Rang Jang,  Young-Woo Lee,  Sangyeon Pak, Sanghyo Lee ,  Yuljae Cho,  Dongwoo Kang,  Hyeon Suk Shin,  Jin Pyo Hong,  Stephen M Morris, SeungNam Cha,  Jung Inn Sohn  and  Jong Min Kim Journal of Materials Chemistry A 7, 2529-2535 (2019) 

2018

Femtosecond fiber Bragg grating fabrication with adaptive optics aberration compensation

Julian Fells, Patrick Salter, Matthew Woolley, Stephen Morris, and Martin Booth Optics Letters 43, 5993-5996 (2018)

Featured in Top Downloads in Optics Letters December 2018

Consecutive Junction-Induced Efficient Charge Separation Mechanisms for High-Performance MoS2/Quantum Dot Phototransistors

Sangyeon Pak, Yuljae Cho, John Hong, Juwon Lee, Sanghyo Lee, Bo Hou, Geon-Hyoung An, Young-Woo Lee, Jae Eun Jang, Hyunsik Im, Stephen M. Morris, Jung Inn Sohn, SeungNam Cha, and Jong Min Kim ACS Applied Materials & Interfaces  10 (44), 38264–38271 (2018)

Flexoelectro-optic liquid crystal analog phase-only modulator with 2π range and 1 kHz switching

Julian A.J. Fells, Xiuze Wang, Steve J. Elston, Chris Welch, Georg H. Mehl, Martin J. Booth, and Stephen M. Morris Optics Letters 43, 4362-4365 (2018)

Read on Demand Images in Laser‐Written Polymerizable Liquid Crystal Devices

Chloe C. Tartan, John J. Sandford O'Neill, Patrick S. Salter, Jure Aplinc, Martin J. Booth, Miha Ravnik, Stephen M. Morris, Steve J. Elston Advanced Optical Materials 6, 1800515 (2018)

Highlighted in Nature Photonics, read here.

Characterization of large tilt-angle flexoelectro-optic switching in chiral nematic liquid crystal devices

Xiuze Wang, Julian A. J. Fells, Chris Welch, Maria-Gabriela Tamba, Georg H. Mehl, Stephen M. Morris, Steve J. Elston Liquid Crystals 46, 408-414 (2018)

Dynamics of pitch change in chiral azobenzene-doped liquid crystals

Cheng-KaiLiua, Min-Cheng TsaiStephen M.Morris, Chian-Yu Chiua, Chii-Chang Chen, Ko-Ting Cheng Journal of Molecular Liquids, 263, 406-412 (2018)

Formation of radial aligned and uniform nematic liquid crystal droplets via drop-on-demand inkjet printing into a partially-wet polymer layer

Ellis Parry, Dongjin Kim, Alfonso Castrejon-Pita, Steve J. Elston, and Stephen M. Morris Optical Materials 80, 71–76 (2018)

Balancing Charge Carrier Transport in a Quantum Dot P–N Junction toward Hysteresis-Free High-Performance Solar Cells

Yuljae Cho, Bo Hou, Jongchul Lim, Sanghyo Lee, Sangyeon Pak, John Hong, Paul Giraud, A-Rang Jang, Young-Woo Lee, Juwon Lee, Jae Eun Jang, Henry J. Snaith, Stephen M. Morris, Jung Inn Sohn, SeungNam Cha, and Jong Min Kim ACS Energy Lett. 3, 1036–1043 (2018)

Time-resolved retardance and optic-axis angle measurement system for characterization of flexoelectro-optic liquid crystal and other birefringent devices

Julian A. J. Fells, Steve J. Elston, Martin J. Booth, and Stephen M. Morris Optics Express 26(5), 6126-6142 (2018)

Solvent-induced self-assembly of uniform lying helix alignment of the cholesteric liquid crystal phase for the flexoelectro-optic   effect

S. Bolis, C. C. Tartan, J. Beeckman, P. Kockaert, S. J. Elston and S. M. Morris  Liquid Crystals 45, 774-782 (2018) 

Field effect transistors and phototransistors based upon p-type solution-processed PbS nanowires

Paul Giraud, Bo Hou, Sangyeon Pak, Jung Inn Sohn, Stephen Morris, SeungNam Cha and Jong Min Kim Nanotechnology 29, 075202 (2018)

2017

Drop-on-Demand Inkjet Printing of Thermally Tunable Liquid Crystal Microlenses

E. Parry, S. Bolis, S. J. Elston, A. Castrejon-Pita and S. M. Morris, Advanced Engineering Materials, 1700774 (2017)

Optically Controllable Linear-Polarization Rotator Using Chiral-Azobenzene-Doped Liquid Crystals

C.-K. Liu, C.-Y. Chiu,S. M. Morris, M.-C. Tsai, C.-C. Chen, K.-T. Cheng Materials 10(11), 1299 (2017)

Charge Transport Modulation of a Flexible Quantum Dot Solar Cell Using a Piezoelectric Effect

Y. Cho, P. Giraud, B. Hou, Y.-W. Lee, J. Hong, S. Lee, S. Pak, J. Lee, J. E. Jang, S. M. Morris, J. I. Sohn, S. Cha, and J. M. Kim Adv. Energy Mater.,1700809 (2017)

Strain-Mediated Interlayer Coupling Effects on the Excitonic Behaviors in an Epitaxially Grown MoS2/WS2 van der Waals Heterobilayer

S. Pak, J. Lee, Y.-W. Lee, A-R. Jang, S. Ahn, K. Y. Ma, Y. Cho, J. Hong, S. Lee, H. Y. Jeong, H. Im, H. S. Shin, S. M. Morris, S. Cha, J. Sohn, and J. M. Kim Nano Letters, 17 (9), 5634–5640 (2017)

Highly stable 3D porous heterostructures with hierarchically-coordinated octahedral transition metals for enhanced performance supercapacitors

J. Hong, Y.-W. Lee, D. Ahn, S. Pak, J. Lee, A-R. Jang, S. Lee, Bo Hou, Y. Cho, S. M. Morris, H. S. Shin, S. Cha, J. I. Sohn, J. M. Kim, Nano Energy, 39, 337-345 (2017)

Thermodynamically Stable Synthesis of Large-Scale and Highly Crystalline Transition Metal Dichalcogenide Monolayers and their Unipolar n–n Heterojunction Devices

J. Lee, S. Pak, P. Giraud, Y-W. Lee, Y. Cho, J. Hong, A.-R. Jang, H.-S. Chung, W.-K. Hong, H.-Y. Jeong, H. S. Shin, L. G. Occhipinti, S. M. Morris, S. Cha, J. I. Sohn, and J. M. Kim Advanced Materials 29, 1702206 (2017)

Hierarchically assembled tubular shell-core-shell heterostructure of hybrid transition metal chalcogenides for high-performance supercapacitors with ultrahigh cyclability

Y.-W. Lee, B.-S. Kim, J. Hong, H. Choi, H.-S. Jang, B. Hou, S. Pak, J. Lee, S.-H. Lee, S. M. Morris, D. Whang, J. P. Hong, H. S. Shin, S. Cha, J. Sohn, and J. M. Kim  Nano Energy 37, 15–23 (2017)

Monolayer optical memory cells based on artificial trap-mediated charge storage and release

J. Lee, S. Pak, Y.-W. Lee, Y. Cho, J. Hong, P. Giraud, H. Suk Shin, S. M. Morris, J. I. Sohn, S. Cha and J. M. Kim Nature Communications 8, 14734 (2017)

Red green blue emissive lead sulfide quantum dots: heterogeneous synthesis and applications

B. Hou, Y. Cho, B.-S. Kim, D. Ahn, S. Lee, J. B. Park, Y.-W. Lee, J. Hong, H. Im, S. M. Morris, J. Sohn, S. Cha and J.-M. Kim Journal of Materials C 5, 3692-3698 (2017)

Generation of 3-dimensional polymer structures in liquid crystalline devices using direct laser writing

C. C. Tartan, P. S. Salter, T. D. Wilkinson, M. J. Booth, S. M. Morris, and S. J. Elston RSC Advances 7, 507-511 (2017)  

2016

Solubility-Dependent NiMoO4Nanoarchitectures: Direct Correlation between Rationally Designed Structure and Electrochemical Pseudokinetics

John Hong, Young-Woo Lee, Bo Hou, Wonbae Ko, Juwon Lee, Sangyeon Pak, JinPyo Hong, Stephen M. Morris, SeungNam Cha, Jung Inn Sohn, and Jong Min Kim ACS Appl. Mater. Interfaces 8 (51), 35227–35234 (2016)

Speckle contrast reduction of laser light using a chiral nematic liquid crystal diffuser

David J. Hansford, Julian A. J. Fells, Steve J. Elston, and Stephen M. Morris Applied Physics Letters 109, 261104 (2016)

Wavelength Tuning of the Photonic Band Gap of an Achiral Nematic Liquid Crystal Filled into a Chiral Polymer Scaffold

S. M. Wood, J. A. J. Fells, S. J. Elston, and S. M. Morris Macromolecules 29, 8643-8652 (2016)

Enhanced charge carrier transport properties in colloidal quantum dot solar cells via organic and inorganic hybrid surface passivation

John Hong, Bo Hou, Jongchul Lim, Sangyeon Pak, Byung-Sung Kim, Yuljae Cho, Juwon Lee, Young-Woo Lee, Paul Giraud, Sanghyo Lee, Jong Bae Park, Stephen M. Morris, Henry J. Snaith, Jung Inn Sohn, SeungNam Cha and Jong Min Kim Journal of Materials Chemistry A, 4, 18769-18775 (2016)            

Wavelength-tuneable laser emission from a dye-doped achiral nematic liquid crystal dispersed into a chiral polymer scaffold

Simon J. Wood, Steve J. Elston, and Stephen M. Morris Molecular Crystals and Liquid Crystals 632, 89-96 (2016)

Enhanced Ferroelectric Property of P(VDF-TrFE-CTFE) Film Using Room-Temperature Crystallization for High-Performance Ferroelectric Device Applications

Yuljae Cho, Docheon Ahn, Jong Bae Park, Sangyeon Pak, Sanghyo Lee, Byoung Ok Jun, John Hong, Su Yong Lee, Jae Eun Jang, Jinpyo Hong, Stephen M. Morris, Jung Inn Sohn, Seung Nam Cha, Jong Min Kim Advanced Electronic Materials 2, 1600225 (2016)

Porous nematic microfluidics for generation of umbilic defects and umbilic defect lattices

Jure Aplinc, Stephen Morris, and Miha Ravnik Physical Review Fluids 1, 023303 (2016)

Localised polymer networks in chiral nematic liquid crystals for high speed photonic switching

Chloe C. Tartan, Patrick. S Salter, Martin J. Booth, Stephen M. Morris & Steve J. Elston Journal of Applied Physics 119, 183106 (2016)

Wavelength-tuneable laser emission from stretchable chiral nematic liquid crystal gels via in situ photopolymerization

S. M. Wood, F. Castles, S. J. Elston, and S. M. Morris, RSC Advances, 6, 31919-31924 (2016)

Stabilizing the uniform lying helix alignment in chiral nematic liquid crystals using direct laser writing

Chloe C. Tartan, Patrick. S Salter, Martin J. Booth, Stephen M. Morris & Steve J. Elston, Ferroelectrics, 495, 167-173 (2016)

Structured Organic–Inorganic Perovskite toward a Distributed Feedback Laser

M. Saliba, S. M. Wood, J. B. Patel, P. K. Nayak, J. Huang, J. A. Alexander-Webber, B. Wenger, S. D. Stranks, M. T. Horantner, J. Tse-Wei Wang, R. J. Nicholas, L. M. Herz, M. B. Johnston, S. M. Morris, H. J. Snaith, and M. K. Riede Advanced Materials, 28, 923-929 (2016)

 

2015

Asymmetric director structures and flexoelectricity in nematic pi-cell devices

C. C. Tartan and S. J. Elston, Applied Physics Letters 107, 081902 (2015)

Polarized Phosphorescence of Isotropic and Metal-Based Clustomesogens Dispersed into Chiral Nematic Liquid Crystalline Films

S. M. Wood, M. Prévôt, M. Amela-Cortes, S. Cordier, S. J. Elston, Y. Molard and S. M. Morris Advanced Optical Materials, 3, 1368-1372, (2015)

Asymmetric Director Structures and Ions in the Measurement of the Flexoelectric Sum (e1 + e3)

C. C. Tartan and S. J. Elston, Molecular Crystals and Liquid Crystals, 610, 77-88 (2015)

Enhanced Amplified Spontaneous Emission in Perovskites using a Flexible Cholesteric Liquid Crystal Reflector

S. D Stranks, S. M Wood, K. Wojciechowski, F. Deschler, M. Saliba, H. Khandelwal, J. B Patel, S. Elston, L. M. Herz, M. B Johnston, A. P. H. J. Schenning, M. G. Debije, M. Riede, S. M Morris, and H. J. Snaith, Nano Letters 15, 4935-4941 (2015)

Improving the stability of organosiloxane smectic A liquid crystal random lasers using redox dopants

A. A. Khan, S. M. Morris, D. J. Gardiner, M. M. Qasim, T. D. Wilkinson, and H. J. Coles, Optical Materials, 42, 441-448 (2015)

Hybrid aligned nematic based measurement of the sum (e 1+e 3) of the flexoelectric coefficients

C. C. Tartan and S. J. Elston, Journal of Applied Physics 117, 064107 (2015)

Optically Switchable Smart Windows with Integrated Photovoltaic Devices

H.-K. Kwon, K.-T. Lee, K. Hur, S. H. Moon, M. M. Qasim, T. D. Wilkinson, J.-Y. Han, H. Ko, I.-K. Han, B. Park, B. K. Min, B.-K. Ju, S. M. Morris, R. H. Friend, and D. H, Ko,Advanced Energy Materials, 5, 1401437 (2015)

 

2014

Polarization-independent phase modulation using a blue-phase liquid crystal over silicon device

R. Hyman, A. Lorenz, S. M. Morris, and T. D. Wilkinson, Applied Optics, 53, 6925 (2014)

Stretchable liquid-crystal blue-phase gels

F Castles, S. M. Morris, J. M. Hung, M. M. Qasim, A. D. Wright, S. Nosheen, S. S. Choi, B. I Outram, S. J. Elston, C. Burgess, L. Hill, T. D. Wilkinson, H. J. Coles, Nature Materials, 13, 817-821(2014)

Electrical addressing of polymer-stabilized hyper-twisted chiral nematic liquid crystals with interdigitated electrodes: Experiment and model

A. Lorenz, D. J. Gardiner, S. M. Morris, F. Castles, M. M. Qasim, S. S. Choi, W. S. Kim, H. J. Coles, and T. D. Wilkinson, Applied Physics Letters 104, 071102 (2014)

2013

Adaptive holographic pumping of thin-film organic lasers

S. M. Wood, T. K. Mavrogordatos, S. M. Morris, P. J. W. Hands, F. Castles, D. J. Gardiner, K. L. Atkinson, H. J. Coles, and T. D. Wilkinson Optics Letters 38, 4483 (2013)

Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal

S. M. Morris, M.M. Qsaim, K. T. Cheng, F. Castles, D. H. Ko, D. J. Gardiner, S. Nosheen, T. D. Wilkinson, H. J. Coles, C. Burgess, and L. Hill Applied Physics Letters 103, 101105 (2013)

A nano-patterned photonic crystal laser with a dye-doped liquid crystal

D. H. Ko, S. M. Morris, A. Lorenz, F. Castles, H. Butt, D. J. Gardiner, M. M. Qasim, B. Wallikewitz, P. J. W. Hands, T. D. Wilkinson, G. Amaratunga, H. J. Coles, and R. H. Friend Applied Physics Letters 103, 051101 (2013)

Spontaneous emission from radiative chiral nematic liquid crystals at the photonic band edge: An investigation into the role of the density of photon states near resonance

T. K. Mavrogordatos, S. M. Morris, S. M. Wood, H. J. Coles, and T. D. Wilkinson, Physical Review E 87, 062504 (2013)

A printable optical time-temperature integrator based on shape memory in a chiral nematic polymer network

A. R. Vaccaro, D. J.D. Davies, S. M. Morris, N. Herzer, A. P.H.J. Schenning, C. W. M. Bastiaansen, Advanced Functional Materials 23, 2723 (2013)

Liquid crystalline chromophores for photonic band-edge laser devices

S. M. Morris, M. M. Qasim, D. J. Gardiner, P. J. W. Hands, F. Castles, G. Tu, W. T. S. Huck, R. H. Friend, H. J. Coles, Optical Materials 35, 837 (2013)

2012

Increasing the flexoelastic ratio of liquid crystals using highly fluorinated ester-linked bimesogens

K. L. Atkinson, S. M. Morris, M. M. Qasim, F. Castles, D. J. Gardiner, P. J. W. Hands, S. S. Choi, W.-S. Kim, H. J. Coles Physical Chemistry Chemical Physics, 14, 16377 (2012)

Printed photonic arrays from self-organised chiral nematic liquid crystals

D. J. Gardiner, W.-S. Kai, S. M. Morris, P. J. W. Hands, T. D. Wilkinson, I. Hutchings, and H. J. Coles, Soft Matter, 8, 9977 (2012)

The density of photon states in dye-doped chiral nematic liquid crystal cells in the presence of losses and gain

Th. K. Mavrogordatos, S. M. Morris, F. Castles, P. J. W. Hands, A. D. Ford, H. J. Coles and T. D. Wilkinson, Physical Review E 86, 011705 (2012)

Blue-phase templated fabrication of three-dimensional nanostructures for photonic applications

F. Castles, F.V. Day, S.M. Morris, D.-H. Ko, D.J. Gardiner, M.M. Qasim, S. Nosheen, P.J.W. Hands, S.S. Choi, R.H. Friend, H. J. Coles Nature Materials 11, 599 (2012)

Flexoelectric coefficient measurements in the nematic liquid crystal phase of 5CB

F. Castles, S.C. Green, D.J. Gardiner, S.M. Morris, H.J. Coles AIP Advances, 2 (2), 022137, (2012)

Electrically switchable random to photonic band-edge laser emission in chiral nematic liquid crystals

S.M. Morris, D.J. Gardiner, P.J.W. Hands, M.M. Qasim, T.D. Wilkinson, I.H. White, H.J. Coles Applied Physics Letters 100, 071110, (2012)

Lowering the excitation threshold of a random laser using the dynamic scattering states of an organosiloxane smectic A liquid crystal

S.M. Morris, D.J. Gardiner, M.M Qasim, P.J.W. Hands, T.D. Wilkinson, H.J. Coles, Journal of Applied Physics 111 (3), 033106, (2012)

Spontaneous induction of the uniform lying helix alignment in bimesogenic liquid crystals for the flexoelectro-opticeffect

D.J. Gardiner, S.M. Morris, P.J.W. Hands, F. Castles, M.M. Qasim, W.-S. Kim, S.S. Choi, T.D. Wilkinson, H.J. Coles Applied Physics Letters 100, 063501, (2012)

Flexoelectric and elastic coefficients of odd and even homologous bimesogens

K.L. Atkinson, S.M. Morris, F. Castles, M.M. Qasim, D.J. Gardiner, H.J. Coles Physical Review E 85, 012701,  (2012)

2011

Fast-switching phase gratings using in-plane addressed short-pitch polymer stabilized chiral nematic liquid crystals

S.M. Morris, D.J. Gardiner, F. Castles, P.J.W. Hands, T.D. Wilkinson, H.J. Coles Applied Physics Letters 99, 253502 (2011)

The limits of flexoelectricity in liquid crystals

F. Castles, S. M. Morris, and H. J. Coles AIP Advances, 1, 032120, (2011)

Polymer stabilized chiral nematic liquid crystals for fast switching and high contrast electro-optic devices

D.J. Gardiner, S.M. Morris, F. Castles, M.M. Qasim, W.-S. Kim, S.S. Choi, H.-J. Park, I.-J. Chung, H.J. Coles Applied Physics Letters 98, 263508, (2011)

Band-edge and random lasing in paintable liquid crystal emulsions

P.J.W. Hands, D.J. Gardiner, S.M. Morris, C. Mowatt, T.D. Wilkinson, H.J. Coles Applied Physics Letters 98 (14), 141102, (2011)

Paintable band-edge liquid crystal lasers

D.J. Gardiner, S.M. Morris, P.J.W. Hands, C.G. Mowatt, R.T. Rutledge, T.D. Wilkinson, H.J. Coles Optics Express, 19 (3), p. 2432-2439, (2011)

2010

High slope efficiency liquid crystal lasers C. Mowatt, S. M. Morris, T. D. Wilkinson, H. J. Coles, Applied Physics Letters 97 (25), 251109 (2010)

Fast electro-optical device based on chiral liquid crystals encapsulated in periodic polymer channels

Novel nonvolatile memory with multibit storage based on a ZnO nanowire transistor J. I. Sohn, S. S. Choi, S. M. Morris, J. S. Bendall, H. J. Coles, W.-K. Hong, G. Jo, T. Lee, M. E. Welland, Nano Letters  10, 11 Pages 4316-4320 (2010)

Microscopic liquid crystal lasers H. Coles and S. Morris, Nature Photonics 4, 676-685 (2010)

Thermodynamically stable blue phases F. Castles, S. M. Morris, E. Terentjev, and H. J. Coles, Physical Review letters 104, 157801 (2010)

Ultra-fast switching flexoelectric liquid crystal display with high contrast F. Castles, S. M. Morris, D. J. Gardiner, Q. M. Malik, and H. J. Coles,  J. of SID 18, 128-133 (2010)

Comparison of the performance of chiral nematic liquid crystal lasers C. Mowatt, S. M. Morris, M. H. Song, T. D. Wilkinson, R. H. Friend, and H. J. Coles, Journal of Applied Physics 107, 043101 (2010)

S.S. Choi, S.M. Morris, W.T.S. Huck, H.J. Coles, Simultaneous red-green-blue reflection and wavelength tuning from an achiral liquid crystal and a polymer template Advanced Materials 22, 53-56, (2010)

2009

High contrast chiral nematic liquid crystal device using a negative dielectric material S. S. Choi, F. Castles, S. M. Morris, H. J. Coles, Applied Physics Letters 95, 193502 (2009)

Flexoelectro-optic properties of a chiral nematic liquid crystal in the standing helix configuration F. Castles, S. M. Morris, H. J. Coles Physical Review E 80 031709 (2009)

Removing the discontinuous shift in emission wavelength of a chiral nematic liquid crystal laser S.M. Morris, A.D. Ford, H.J. Coles Journal of Applied Physics 106, 023112, (2009)

Electrically tuneable liquid crystal photonic bandgaps S.S. Choi, S.M. Morris, W.T.S. Huck, H.J. Coles Advanced Materials 21, 3915-3918, (2009)

High speed liquid crystal over silicon display based on the flexoelectro-optic effect J. Chen, S.M. Morris, T.D. Wilkinson, J.P. Freeman, H.J. Coles  Optics Express, 17 (9), 7130–7137, (2009)

High-efficiency multistable switchable glazing using smectic A liquid crystals D.J. Gardiner, S.M. Morris, H.J. Coles Solar Energy Materials and Solar Cells, 93 (3), 301 (2009)

The switching properties of chiral nematic liquid crystals using electrically commanded surfaces S.S. Choi, S.M. Morris, W.T.S. Huck, H.J. Coles Soft Matter, 5, 354-362, (2009)

2008

Polychromatic liquid crystal laser arrays towards display applications S.M. Morris, P.J.W. Hands, S. Findeisen-Tandel, R.H. Cole, T.D. Wilkinson, H.J. Coles Optics Express, 16 (23), 18827-18837, (2008)

Two-dimensional liquid crystal laser array P.J.W. Hands, S.M. Morris, T.D. Wilkinson, H.J. Coles Optics Letters, 33 (5), 515-517, (2008)

2007

Wavelength tuning the photonic band gap in chiral nematic liquid crystals using electrically commanded surfaces S.S. Choi, S.M. Morris, H.J. Coles, and W.T.S. Huck  Applied Physics Letters 91, 231110 (2007)

Emission Characteristics of a homologous series of bimesogenic liquid-crystal lasers A. D. Ford, S. M. Morris, M. N. Pivnenko, C. Gillespie, and H. J. Coles, Physical Review E 76, 051703 (2007)

Reversible color switching from blue to red in a polymer stabilized chiral nematic liquid crystal Jing Chen, Stephen M. Morris, Timothy D. Wilkinson, and Harry J. Coles Applied Physics Letters 91, 121118 (2007)

The influence of surface anchoring agents on the flexoelectro-optic properties of a chiral nematic liquid crystal S. M. Morris, Y. Cho, and H. J. Coles Journal of Applied Physics 101, 114109 (2007)

Structure-flexoelastic properties of bimeogenic liquid crystals S. M. Morris, M. J. Clarke, A. E. Blatch, and H. J. Coles, Physical Review E 75, 041701 (2007)

2006

Correlations between the performance characteristics of a liquid crystal laser and the macroscopic material properties S. M. Morris, A. D. Ford, M. N. Pivnenko, O. Hadeler, and H. J. Coles Physical Review E 74, 061709 (2006)

Photonics and lasing in liquid crystals Alison D. Ford, Stephen M. Morris, and Harry J. Coles  Materials Today 9, 36 (2006)

The emission characteristics of liquid crystal lasers S. M. Morris, A. D. Ford, C. Gillespie, M. N. Pivnenko, O. Hadeler, and H. J. Coles J. Soc. Info. Display, 14, 565 (2006)

The effect of polymer concentration on stabilised large tilt-angle flexoelectro-optic switching B. J. Broughton, M. J. Clarke, S. M. Morris, A. E. Blatch, and H. J. Coles Journal of Applied Physics 99, 023511 (2006)

Strong flexoelectric coupling in bimesogenic liquid crystal mixtures H. J. Coles, M. J. Clarke, S. M. Morris, B. J. Broughton, and A. E. Blatch Journal of Applied Physics  99, 034104 (2006)

2005

Enhanced emission from liquid crystal lasers S. M. Morris, A. D. Ford, M. N. Pivnenko, and H. J. Coles Journal of Applied Physics 97, 023103 (2005)

The effects of reorientation on the emission properties of a photonic band edge liquid crystal laser S. M. Morris, A. D. Ford, M. N. Pivnenko, and H. J. Coles  J. Opt. A: Pure Appl. Op. 7, 215 (2005)

Electronic control of nonresonant random lasing from a dye-doped smectic A* liquid crystal scattering device S. M. Morris, A. D. Ford, M. N. Pivnenko, and H. J. Coles Applied Physics Letters 86, 141103 (2005)

 

Book Chapters

Chapter 16: Electric, Magnetic and Mechanical fields and Chiral Nematic Liquid Crystals Stephen Morris and Harry Coles, Handbook of Liquid Crystals (Vol. 3) Wiley-VCH Verlag GmbH & Co. KGaA (2014)

Chapter 15: Structures and Optical Properties of Chiral Nematic Liquid Crystals Flynn Castles and Stephen Morris, Handbook of Liquid Crystals (Vol. 3) Wiley-VCH Verlag GmbH & Co. KGaA (2014)

Flexoelectro-optic liquid crystal displays Harry Coles and Stephen Morris Handbook of visual display technology (Vol.3), pages 1681 – 1698 Editors J. Chen, W. Cranton, M. Fihn, Springer (2012)

Red-green-blue 2D tuneable liquid crystal laser devices and displays H.J. Coles, S.M. Morris, A.D. Ford, P.J.W. Hands, T.D. Wilkinson Liquid crystal microlasers (Chapter 13) Editors L.M. Blinov, R. Bartolino, Transworld Research Network (2010)

Most Recent Publications

A compact full 2π flexoelectro-optic liquid crystal phase modulator

Wang X et al. (2020), Advanced Materials Technologies, 5(12)

Electrically tunable printed bifocal liquid crystal microlens arrays

Kamal W et al. (2020), Advanced Materials Interfaces, 7(16)

Electrically-tunable positioning of topological defects in liquid crystals

Sandford O’Neill JJ et al. (2020), Nature Communications, 11

View all

Projects Available

Laser-written Photonic Structures in Liquid Crystals

Liquid Crystals for Intelligent Reflective Surfaces

Bioinspired Liquid Crystal Polymer Devices

Laser-written Liquid Crystal Conjugated Polymers for Photonic Circuits

Optically-progammable Metaphotonic Materials

Former D.Phil Students

Dr John Sandford O'Neil (2021) Thesis Title: Two-photon Polymerisation Direct Laser Writing for Liquid Crystal Photonics 

Dr Taimoor Ali (2021) Thesis Title: Hybrid Thin-Film Solution-processed Liquid Crystal Lasers 

Dr Ellis Parry (2020) Thesis Title: Inkjet Printing of Liquid Crystals and Polymer Composites for Novel Thin-Film Optical Elements

Dr Paul Giraud (2020) Thesis Title: Colloidal Lead Sulphide Nanostructures for Optoelectronics Applications

Dr David Hansford (2018) Thesis Title: A liquid crystal device for speckle reduction in coherent light

Dr Sangyeon Pak (2018) Thesis Title: Semiconducting two-dimensional nanomaterials for optoelectronic devices

Dr Juwon Lee (2018) Thesis Title: Synthesis and electronic device applications of two-dimensional materials

Dr John Hong (2018) Thesis Title: Nanostructured materials for energy conversion and energy storage applications

Dr Yuljae Cho (2017) Thesis Title: Hybrid energy harvesting towards a sustainable energy system

Dr Simon Wood (2016) Thesis Title: Liquid crystals and novel gain materials for thin-film photonic devices

Most Recent Publications

A compact full 2π flexoelectro-optic liquid crystal phase modulator

Wang X et al. (2020), Advanced Materials Technologies, 5(12)

Electrically tunable printed bifocal liquid crystal microlens arrays

Kamal W et al. (2020), Advanced Materials Interfaces, 7(16)

Electrically-tunable positioning of topological defects in liquid crystals

Sandford O’Neill JJ et al. (2020), Nature Communications, 11

View all