Graham Turnbull

Graham A. Turnbull

Postal address:
School of Physics & Astronomy
(Physics)

United Kingdom

E-mail: gat@st-andrews.ac.uk

Direct phone: +44 (0)1334 467330

Research overview

Graham Turnbull’s research interests are focused on photonic applications of soft materials, including organic semiconductors, plastic lasers, chemical sensing and nanophotonics.

Current research activities include the development of miniature organic and perovskite lasers, explosive vapour sensors, nanoimprint lithography , hybrid optoelectronics, photophysics of organic semiconductors, visible light data communications, and strong coupling in organic materials.

 Admin & Teaching

  • Head of School
  • Polymer & Liquid Crystal Displays (PH5209)

Collaborative Research Projects

  • Hybrid Polaritonics
  • TIRAMISU: Humanitarian Demining
  • UP-VLC: Visible light communications

External positions

Recent Publications

Flexible and ultra-lightweight polymer membrane lasers
Karl, M., Glackin, J. M. E., Schubert, M., Kronenberg, N. M., Turnbull, G. A., Samuel, I. D. W. & Gather, M. C. 1 May 2018 In : Nature Communications. 9, 7 p., 1525
Research output: Research - peer-reviewArticle

Carbon‐bridged p‐phenylenevinylene polymer for high‐performance solution‐processed distributed feedback lasers
Morales‐Vidal, M., Quintana, J. A., Villalvilla, J. M., Boj, P. G., Nishioka, H., Tsuji, H., Nakamura, E., Whitworth, G. L., Turnbull, G. A., Samuel, I. D. W. & Díaz‐García, M. A. 10 Apr 2018 In : Advanced Optical Materials. Early View, 8 p., 1800069
Research output: Research - peer-reviewArticle

An organic vortex laser
Stellinga, D., Pietrzyk, M., Glackin, J. M. E., Wang, Y., Bansal, A. K., Turnbull, G. A., Dholakia, K., Samuel, I. D. W. & Krauss, T. 27 Mar 2018 In : ACS Nano. 12, 3, p. 2389-2394 6 p.
Research output: Research - peer-reviewArticle

Ormosil-coated conjugated polymers for the detection of explosives in aqueous environments
Gillanders, R. N., Campbell, I. A., Glackin, J. M. E., Samuel, I. D. W. & Turnbull, G. A. 1 Mar 2018 In : Talanta. 179, p. 426-429
Research output: Research - peer-reviewArticle

Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications
Foucher, C., Sufyan, M. I., Guilhabert, B., Videv, S., Rajbhandari, S., Gomez Diaz, A., Chun, H., Vithanage, C. D. A., Turnbull, G. A., Samuel, I. D. W., Faulkner, G., O’Brien, D. C., Hass, H., Laurand, N. & Dawson, M. D. Feb 2018 In : IEEE Photonics Journal. 10, 1, 11 p., 8255623
Research output: Research - peer-reviewArticle

Strong coupling in a microcavity containing β-carotene
Grant, R. T., Jayaprakash, R., Coles, D. M., Musser, A., Liberato, S. D., Samuel, I. D. W., Turnbull, G. A., Clark, J. & Lidzey, D. G. 31 Jan 2018 In : Optics Express. 26, 3, p. 3320-3327 8 p.
Research output: Research - peer-reviewArticle

Advances in optical sensing of explosive vapours
Gillanders, R. N., Samuel, I. D. W., Turnbull, G. A., Campbell, I. A. & Glackin, J. M. E. 25 Jan 2018 Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS 2018). Raposo, M. & Ribeiro, P. A. (eds.). SciTePress, p. 323-327
Research output: ResearchConference contribution

Polymer colour converter with very high modulation bandwidth for visible light communications
Vithanage, D. A., Kanibolotsky, A. L., Rajbhandari, S., Manousiadis, P. P., Sajjad, M. T., Chun, H., Faulkner, G., O'Brien, D. C., Skabara, P. J., Samuel, I. D. W. & Turnbull, G. A. 21 Sep 2017 In : Journal of Materials Chemistry C. 5, 35, p. 8916-8920 5 p.
Research output: Research - peer-reviewArticle

Green perovskite distributed feedback lasers
Harwell, J. R., Whitworth, G. L., Turnbull, G. A. & Samuel, I. D. W. 15 Sep 2017 In : Scientific Reports. 7, 8 p., 11727
Research output: Research - peer-reviewArticle

Intermolecular states in organic dye dispersions: excimers vs aggregates
Musser, A. J., Rajendran, S. K., Georgiou, K., Gai, L., Grant, R. T., Shen, Z., Cavazzini, M., Ruseckas, A., Turnbull, G. A., Samuel, I. D. W., Clark, J. & Lidzey, D. G. 7 Sep 2017 In : Journal of Materials Chemistry C. 5, 33, p. 8380-8389 10 p.
Research output: Research - peer-reviewArticle

A low-cost, portable optical explosive-vapour sensor
Gillanders, R. N., Samuel, I. D. W. & Turnbull, G. A. Jun 2017 In : Sensors and Actuators B: Chemical. 245, p. 334-340
Research output: Research - peer-reviewArticle

Single cell induced optical confinement in biological lasers
Karl, M., Dietrich, C. P., Schubert, M., Samuel, I. D. W., Turnbull, G. A. & Gather, M. C. 1 Mar 2017 In : Journal of Physics D : Applied Physics. 50, 8, 9 p., 084005
Research output: Research - peer-reviewArticle

MIMO visible light communications using a wide field-of-view fluorescent concentrator
Mulyawan, R., Chun, H., Gomez, A., Rajbhandari, S., Faulkner, G., Manousiadis, P. P., Vithanage, D. A., Turnbull, G. A., Samuel, I. D. W., Collins, S. & O'Brien, D. 1 Feb 2017 In : IEEE Photonics Technology Letters. 29, 3, p. 306-309 4 p., 7809099
Research output: Research - peer-reviewArticle

A saturated red color converter for visible light communication using a blend of star-shaped organic semiconductors
Sajjad, M. T., Manousiadis, P., Orofino, C., Kanibolotsky, A., Findlay, N., Rajbhandari, S., Vithanage, C. D. A., Chun, H., Faulkner, G., O'Brien, D., Skabara, P., Turnbull, G. A. & Samuel, I. D. W. Jan 2017 In : Applied Physics Letters. 110, 1, 4 p., 013302
Research output: Research - peer-reviewArticle

Nanoimprinted distributed feedback lasers of solution processed hybrid perovskites
Whitworth, G. L., Harwell, J. R., Miller, D. N., Hedley, G. J., Zhang, W., Snaith, H. J., Turnbull, G. A. & Samuel, I. D. W. 3 Oct 2016 In : Optics Express. 24, 21, p. 23677-23684 8 p.
Research output: Research - peer-reviewArticle

Self-trapping and excited state absorption in fluorene homo-polymer and copolymers with benzothiadiazole and tri-phenylamine
Denis, J-C., Ruseckas, A., Hedley, G. J., Matheson, A. B., Paterson, M. J., Turnbull, G. A., Samuel, I. D. W. & Galbraith, I. 21 Aug 2016 In : Physical Chemistry Chemical Physics. 18, 31, p. 21937-21948 12 p.
Research output: Research - peer-reviewArticle

Probing the energy levels of perovskite solar cells via Kelvin probe and UV ambient pressure photoemission spectroscopy
Harwell, J. R., Baikie, T. K., Baikie, I. D., Payne, J. L., Ni, C., Irvine, J. T. S., Turnbull, G. A. & Samuel, I. D. W. 7 Aug 2016 In : Physical Chemistry Chemical Physics. 18, 29, p. 19738-19745 8 p.
Research output: Research - peer-reviewArticle

Wide field of view fluorescent antenna for visible light communications beyond the étendue limit
Manousiadis, P., Rajbhandari, S., Mulyawan, R., Vithanage, C. D. A., Chun, H., Faulkner, G., O'Brien, D. C., Turnbull, G. A., Collins, S. & Samuel, I. D. W. 20 Jul 2016 In : Optica. 3, 7, p. 702-706 5 p.
Research output: Research - peer-reviewArticle

BODIPY star-shaped molecules as solid state colour converters for visible light communications
Vithanage, C. D. A., Manousiadis, P., Sajjad, M. T., Rajbhandari, S., Chun, H., Orofino, C., Cortizo-Lacalle, D., Kanibolotsky, A., Faulkner, G., Findlay, N., O'Brien, D., Skabara, P., Samuel, I. D. W. & Turnbull, G. A. 6 Jul 2016 In : Applied Physics Letters. 109, 1, 013302
Research output: Research - peer-reviewArticle

Optofluidic distributed feedback lasers with evanescent pumping: reduced threshold and angular dispersion analysis
Karl, M., Whitworth, G. L., Schubert, M., Dietrich, C. P., Samuel, I. D. W., Turnbull, G. A. & Gather, M. C. 27 Jun 2016 In : Applied Physics Letters. 108, 26, 261101
Research output: Research - peer-reviewArticle

A Portable, Low-cost System for Optical Explosive Detection based on a CMOS Camera
Gillanders, R., Samuel, I. D. W., Turnbull, G. A. & Campbell, I. A. 29 Feb 2016 Photoptics 2016. SciTePress, Vol. 4, p. 132-136 5 p. 58
Research output: ResearchConference contribution

Microstructured organic semiconductors: lasers sensors and visible light communications
Whitworth, G. L., Manousiadis, P. P., Morawska, P., Zhang, S., Turnbull, G. A. & Samuel, I. D. W. 25 Oct 2015 2015 20TH Microoptics Conference (MOC). IEEE/The Japan Society of Applied Physics, 2 p.
Research output: ResearchConference contribution

Solvent immersion nanoimprint lithography of fluorescent conjugated polymers
Whitworth, G. L., Zhang, S., Stevenson, J. R. Y., Ebenhoch, B., Samuel, I. D. W. & Turnbull, G. A. 19 Oct 2015 In : Applied Physics Letters. 107, 16, 163301
Research output: Research - peer-reviewArticle

Side-chain influence on the mass density and refractive index of polyfluorenes and star-shaped oligofluorene truxenes
Morawska, P. O., Wang, Y., Ruseckas, A., Orofino-Penia, C., Kanibolotsky, A. L., Santhanagopal, R., Fröhlich, N., Fritsch, M., Allard, S., Scherf, U., Skabara, P. J., Samuel, I. D. W. & Turnbull, G. A. 24 Sep 2015 In : Journal of Physical Chemistry C. 119, 38, p. 22102-22107 6 p.
Research output: Research - peer-reviewArticle

A simple wide field of view concentrator for free space visible light communications
Collins, S., Mulyawan, R., Rajbhandari, S., Chu, H., Faulkner, G. E., O'Brien, D. C., Manousiadis, P. P., Vithanage, D. A., Turnbull, G. A. & Samuel, I. D. W. 9 Sep 2015 2015 IEEE Summer Topicals Meeting Series, SUM 2015: Nassau; Bahamas; 13 July 2015 through 15 July 2015. IEEE, p. 43-44 2 p. 7248184
Research output: ResearchConference contribution

Demonstration of 2.3 Gb/s RGB white-light VLC using polymer based colour-converters and GaN micro-LEDs
Manousiadis, P., Chun, H., Rajbhandari, S., Mulyawan, R., Vithanage, D. A., Faulkner, G., Tsonev, D., McKendry, J. J. D., Ijaz, M., Xie, E., Gu, E., Dawson, M. D., Haas, H., Turnbull, G. A., Samuel, I. D. W. & O'Brien, D. 9 Sep 2015 2015 IEEE Summer Topicals Meeting Series, SUM 2015: Nassau; Bahamas; 13 July 2015 through 15 July 2015. IEEE, p. 222-223 2 p. 7248279
Research output: ResearchConference contribution

Organic solar cells as high-speed data detectors for visible light communication
Zhang, S., Tsonev, D., Videv, S., Ghosh, S., Turnbull, G. A., Samuel, I. D. W. & Haas, H. 20 Jul 2015 In : Optica. 2, 7, p. 607-610 4 p.
Research output: Research - peer-reviewArticle

Calculation of the emission power distribution of microstructured OLEDs using the reciprocity theorem
Zhang, S., Martins, E. R., Diyaf, A. G., Wilson, J. I. B., Turnbull, G. A. & Samuel, I. D. W. Jul 2015 In : Synthetic Metals. 205, p. 127-133 7 p.
Research output: Research - peer-reviewArticle

Subpicosecond exciton dynamics in polyfluorene films from experiment and microscopic theory
Denis, J-C., Schumacher, S., Hedley, G. J., Ruseckas, A., Morawska, P. O., Wang, Y., Allard, S., Scherf, U., Turnbull, G. A., Samuel, I. D. W. & Galbraith, I. 7 May 2015 In : Journal of Physical Chemistry C. 119, 18, p. 9734-9744 11 p.
Research output: Research - peer-reviewArticle

Fabrication of free-standing ordered fluorescent polymer nanofibres by electrospinning
Stevenson, J. R. Y., Lattante, S., Andre, P., Anni, M. & Turnbull, G. A. 27 Apr 2015 In : Applied Physics Letters. 106, 17, 4 p., 173301
Research output: Research - peer-reviewArticle

Fluorescent red-emitting BODIPY oligofluorene star-shaped molecules as a color converter material for visible light communications
Sajjad, M. T., Manousiadis, P. P., Orofino, C., Cortizo-Lacalle, D., Kanibolotsky, A. L., Rajbhandari, S., Amarasinghe, C. D. A., Chun, H., Faulkner, G., O'Brien, D. C., Skabara, P. J., Turnbull, G. A. & Samuel, I. D. W. Apr 2015 In : Advanced Optical Materials. 3, 4, p. 536-540 5 p.
Research output: Research - peer-reviewArticle

Novel fast color-converter for visible light communication using a blend of conjugated polymers
Sajjad, M. T., Manousiadis, P. P., Chun, H., Vithanage, D. A., Rajbhandari, S., Kanibolotsky, A. L., Faulkner, G., Obrien, D., Skabara, P. J., Samuel, I. D. W. & Turnbull, G. A. 18 Feb 2015 In : ACS Photonics. 2, 2, p. 194-199 6 p.
Research output: Research - peer-reviewArticle

Synthesis and properties of novel star-shaped oligofluorene conjugated systems with BODIPY cores
Orofino-Pena, C., Cortizo-Lacalle, D., Cameron, J., Sajjad, M. T., Manousiadis, P. P., Findlay, N. J., Kanibolotsky, A. L., Amarasinghe, C. D. A., Skabara, P. J., Tuttle, T., Turnbull, G. A. & Samuel, D. W. 19 Nov 2014 In : Beilstein Journal of Organic Chemistry. 10, p. 2704-2714 11 p.
Research output: Research - peer-reviewArticle

Visible light communication using a blue GaN mu LED and fluorescent polymer color converter
Chun, H., Manousiadis, P., Rajbhandari, S., Vithanage, D. A., Faulkner, G., Tsonev, D., McKendry, J. J. D., Videv, S., Xie, E., Gu, E., Dawson, M. D., Haas, H., Turnbull, G. A., Samuel, I. D. W. & O'Brien, D. C. 15 Oct 2014 In : IEEE Photonics Technology Letters. 26, 20, p. 2035-2038 4 p.
Research output: Research - peer-reviewArticle

Highly directional emission and beam steering from organic light-emitting diodes with a substrate diffractive optical element
Zhang, S., Turnbull, G. A. & Samuel, I. D. W. 2014 In : Advanced Optical Materials. EarlyView
Research output: Research - peer-reviewArticle