In addition to his administrative duties, Dean Lemieux remains an active researcher, designing advanced liquid crystal materials found in high-performance microdisplays.
His research into fundamental chemical properties that power LCD screens have resulted in displays with faster response times and fewer manufacturing defects. These contributions earned him the 2012 Samsung Mid-Career Award by the International Liquid Crystal Society.
Today, his group is one of only a few chemistry groups in the world with the expertise to design and synthesize new liquid crystal materials, characterize their physical properties, and evaluate their potential as active components of electro-optical and photonic devices.
Phone: (519) 888-4567 ext. 30353
Office: ESC 252
Ferroelectric liquid crystals
Chiral organic materials
Liquid crystals for display applications
Professor Lemieux's lab bridges the fields of organic synthesis, physical organic chemistry and condensed matter physics to create new liquid crystal materials that are used in fast switching ferroelectric and electroclinic LCD applications by taking advantage of their inherent structure-property relationships.
His research has resulted in a better understanding of how chirality (a molecule’s "handedness") propagates in smectic liquid crystal phases, which is leveraged to produce ferroelectric LCDs with faster response times, and in the development of new liquid crystal materials for the formulation of defect-free ferroelectric and electroclinic LCD applications.
His group is one of only a few chemistry groups in the world with the expertise necessary to synthesize new liquid crystal materials, characterize their physical properties, and evaluate their potential as active components of electro-optical and photonic devices.
Dean Lemieux's recent publications include
- Ahmed, Z., Müller, C., Johnston, J. J., Nguyen, K., Schubert, C. P., Abitaev, K., ... & Lemieux, R. P. (2019). Design of liquid crystals with ‘de Vries-like’properties: the effect of an ethynyl spacer in the core structure. Liquid Crystals, 46(6), 896-904.
- Müller, C., Schubert, C. P., Lemieux, R. P., & Giesselmann, F. (2018). The Influence of Carbosilane Nanosegregation on the Dynamics in ‘de Vries‐type’Liquid Crystals. ChemPhysChem, 19(20), 2703-2708.
- Ahmed, Z., Müller, C., Holzwarth, M., Haege, C., Giesselmann, F., & Lemieux, R. P. (2018). The design of smectic liquid crystals with an axially chiral biphenyl core: in search of a proper ferroelectric liquid crystal phase. Journal of Materials Chemistry C, 6(6), 1562-1566.
- Ahmed, Z., Müller, C., Johnston, J. J., Nguyen, K., Schubert, C. P., Abitaev, K., ... & Lemieux, R. P. (2018). Design of liquid crystals with ‘de Vries-like’properties: the effect of an ethynyl spacer in the core structure. Liquid Crystals, 1-9.
- Cohen, O., Ferris, A. J., Adkins, R., Lemieux, R. P., Avnir, D., Gelman, D., & Rosenblatt, C. (2018). Chiral organosilica particles and their use as inducers of conformational deracemization of liquid crystal phases. Chemical Physics Letters, 696, 112-118.
- Harjung, M. D., Schubert, C. P., Knecht, F., Porada, J. H., Lemieux, R. P., & Giesselmann, F. (2017). New amphiphilic materials showing the lyotropic analogue to the thermotropic smectic C* liquid crystal phase. Journal of Materials Chemistry C, 5(30), 7452-7457.
R.P. Lemieux and L. Dinescu "Compounds and Methods for Doping Liquid Crystal Hosts." U.S. Patent No. 5,989,451. Issued November 23, 1999.
Awards and Distinctions
Samsung Mid-Career Award, International Liquid Crystal Society, 2012.
Chemistry Graduating Class Award for Teaching Excellence, Queen's University, 2007.
Visiting Lectureship, Chemistry Research Promotion Center, National Science Council of Taiwan, 2006.
W. J. Barnes Teaching Excellence Award for the Arts and Science Undergraduate Society, Queen’s University, 2005.
Ontario Premier's Research Excellence Award, 2000.
Japanese Government Research Award for Foreign Specialist, Science and Technology Agency of Japan, 1999.
Chancellor’s Research Award, Queen’s University, 1999.
Chemistry Graduating Class Award for Teaching Excellence, Queen's University, 1997.
CNC/IUPAC Travel Award, 1997.
Ichikizaki Fund for Young Chemists Travel Awards, 1994, 1996.
- International Liquid Crystal Society, since 1994; member of the Board of Directors since 2010
- Chemical Institute of Canada; Organic Division, since 1992
- American Chemical Society; Organic Division, since 1987
- 1989 PhD Chemistry, University of Illinois, Urbana, Illinois
- 1984 BA Chemistry with high honours, Colgate University, Hamilton, New York