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Assoc Professor Gary Bryant

Position	Professor
School / Work Unit	Applied Sciences
Contact Details	+(61 3) 9925 2139 gary.bryant@rmit.edu.au
Location	Building: 14 Level: 7 Room: 6 City Campus
Portfolio	Science, Engineering & Health

Qualifications

PhD UNSW, B Sc (Hons) UNSW.

Teaching/Work responsibilities

Coordinator Nanotechnology program

Research Interests

Research Projects

Crystallisation dynamics in 1 and 2 component systems(ARC funded) (with Prof W van Megen)
A light scattering investigation of collective motion in colloidal glasses (with Prof W van Megen)
Investigation of ways of extending the applicability and accuracy of particle size determination using light scattering techniques (with Prof W van Megen)
Membrane phase behaviour during dehydration (with AProf Joe Wolfe at UNSW)
Effects of solutes in reducing membrane damage during dehydration (with Prof Koster, Uni of South Dakota, USA )
Measurement of the light scattered by Australian inland waters, with applications to the measurement of phytoplankton concentration using remote sensing (with D. Nugegoda, Biotechnology and Environmental Biology, RMIT and A. Dekker, CSIRO, Canberra)
Phase transitions in 2 dimensional colloidal systems (with E Perez, F Pincet and W. Krauth, ENS, Paris, France )

Research Publications

Book Chapters

Koster, K.L. and G. Bryant (2006). Dehydration in model membranes and protoplasts: contrasting effects at low, intermediate and high hydrations. in: Cold Hardiness in Plants: Molecular Genetics, Cell Biology and Physiology, T.H.H. Chen, M. Uemura and S. Fujikawa Eds. p 219-234. CABI, ISBN 0851990592.

Wolfe J. and G. Bryant, (1992). Physical principles of membrane damage due to dehydration and freezing. In: Mechanics of swelling: from clays to living cells and tissues. T.K. Karalis (ed), NATO ASI series H, vol. 64:205-244. ISBN: 0387546073

Refereed Journal Papers

Williams, S. R., C. P. Royall and G. Bryant (2008). Crystallisation of Dense Binary Hard-Sphere Mixtures with Marginal Size Ratio. Phys. Rev. Lett. 100:225502.

Schöpe, H. J., O. Marnette, W. van Megen, and G. Bryant (2007). Creation and characterization of particles with small differences in polydispersity. Langmuir 23: 11534-11539.

Schöpe, H. J., G. Bryant and W. van Megen (2007). Effect of polydispersity on the crystallization kinetics of suspensions of colloidal hard spheres when approaching the glass transition. J. Chem. Phys. 127: 084505.

van Megen, W. and G. Bryant (2007) Dynamical heterogeneity and the freezing transition in hard sphere suspensions: further analysis of the mean square displacement and the velocity auto-correlation function. Phys. Rev. E 76: 021402.

Lenné, T., G. Bryant, R. Holcomb and K. L. Koster (2007). How much solute is needed to inhibit the gel to fluid membrane phase transition at low hydration?, Biochim. Biophys. Acta 1768: 1019-1022: doi:10.1016/j.bbamem.2007.01.008

Schöpe, H. J., G. Bryant and W. van Megen (2006). Small changes in particle size distribution dramatically alter the crystallization kinetics of hard sphere colloidal suspensions. Phys. Rev. E 74: 060401(R).

Lenné, T., G. Bryant, C. J. Garvey, U. Keiderling and K. L. Koster (2006). Location of sugars in multilamellar membranes at low hydration. Physica B: Cond. Mat. 385-386: 862-864. doi:10.1016/j.physb.2006.05.127

Williams, S. R., P. McGlynn, G. Bryant, I. K. Snook and W. van Megen (2006). Dynamical signatures of freezing: Stable fluids, metastable fluids, and crystals. Phys. Rev. E 74: 031204.

Schöpe, H. J., G. Bryant and W. van Megen (2006). Two-step crystallization kinetics in colloidal hard sphere systems. Phys. Rev. Lett. 96: 175701.

Wu, S., R. A. Shanks and G. Bryant (2006). Properties of Hydrophobically Modified Polyacrylamide with Low Molecular Weight and Interaction with Surfactant in Aqueous Solution, J. App. Polym. Sci. 100: 4348-4360. doi:10.1002/app.23282

Williams, S. R., G. Bryant, I. K. Snook and W. van Megen (2006). Velocity autocorrelation functions of hard-sphere liquids: Long-time tails upon undercooling. Phys. Rev. Lett. 96: 087801.

Van Megen, W., T. C. Mortensen and G. Bryant. (2005) Change in relaxation scenario at the order-disorder transition of a colloidal fluid of hard spheres seen from the Gaussian limit of the self-intermediate scattering function. Phys. Rev. E. 72: 031402.

Martin, S., G. Bryant and W. van Megen (2005). Crystallization kinetics of polydisperse colloidal hard spheres II: Binary mixtures. Phys. Rev. E. 71: 021404.

Bryant, G. and K. L. Koster (2004). Dehydration of solute-lipid systems: hydration force analysis. Colloids and Surfaces B: Biointerfaces. 35: 73-79. doi:10.1016/j.colsurfb.2004.02.001

Martin, S. G. Bryant and W. van Megen. Observation of a Smectic-like Crystalline Structure in Polydisperse Colloids. Phys. Rev. Lett. 90, 255702 (2003).

Martin, S., G. Bryant and W. van Megen. Crystallization kinetics of polydisperse colloidal hard spheres: Experimental evidence for local fractionation. Phys. Rev. E. 67, 061405 (2003).

Koster, K. and G. Bryant (2003). Exclusion of Maltodextrins from Phosphatidylcholine Multilayers During Dehydration: Effects on Membrane Phase Behaviour. Eur. Biophys. J. 32: 96-105.

Bryant, G., S. Martin and W. van Megen (2003). Accurate measurement of small polydispersities in colloidal suspensions. Langmuir. 19: 616-621

Bryant, G., S. Williams, I. Snook, Q. Linmao, F. Pincet, E. Perez,(2002). How hard is the colloidal “hard-sphere” interaction? Phys. Rev. E. Rapid Communications 66, 060501(R).

Francis, P., S. Martin, G. Bryant, W. van Megen and P. Wilksch (2002).Crystallisation spectrometer – A spectrometer for studying the crystallisation of colloidal suspensions. Rev. Sci. Instrum. 73: 3878-3884.

Wolfe, J., G. Bryant and K. Koster (2002). What is 'unfreezable water', how unfreezable is it and how much is there? Cryo-Letts 23: 157-166.

Wolfe, J. and G. Bryant (2001). Cellular cryobiology: thermodynamic and mechanical effects. Int. J. Refrig 24: 438-450. doi:10.1016/S0140-7007(00)00027-X

Bryant, G., K. Koster and J. Wolfe (2001). Membrane behavior in seeds and other systems at low water content: the various effects of solutes. Seed Science Research, 11: 17-25. doi:10.1079/SSR200056

Koster K.L., Y.P. Lei, M. Anderson, S. Martin and G. Bryant (2000). Effects of Vitrified and Non vitrified Sugars on Phosphatidylcholine Fluid-to-Gel Phase Transitions. Biophys. J. 78: 1932-1946. doi:10.1016/0005-2736(94)90343-3

Wolfe J. and G. Bryant (1999). Freezing, drying and/or vitrification of membrane-solute-water systems. Cryobiology 39, 103-129. doi:10.1006/cryo.1999.2195

Bryant, G., T. Mortensen, S. Henderson, S. Williams and W. van Megen (1999). Optical Contrast variation study of non-aqueous suspensions of polymer particles. J. Coll. Int. Sci. 216: 401-408. doi:10.1006/jcis.1999.6341

Bryant, G., H. Schotman and J.C. Thomas (1998). The estimation of multiple light scattering in turbid colloidal suspensions using a 2-Probe detector. Part. Part. Syst. Charact. 15: 170-172. doi: 10.1002/(SICI)1521-4117(199808)15:4<170::AID-PPSC170>3.0.CO;2-G

Pincet, F., E. Perez, G. Bryant, L. Lebeau and C. Mioskowski (1996).Specific forces between DNA bases. Modern Physics Letters B 10: 81-99. doi:10.1142/S0217984996000122

Bryant G., C. Abeynayake and J.C. Thomas (1996). Improved Particle Size Distribution Measurements Using Multiangle Dynamic Light Scattering 2. -Refinements and Applications. Langmuir 12:6224-6228.

Bryant G. and J.C. Thomas (1995). Improved Particle Size Distribution Measurements Using Multiangle Dynamic Light Scattering. Langmuir 11: 2480-2485.

Bryant G., (1995). DSC measurement of cell suspensions during successive freezing runs: implications for the mechanisms of intracellular ice formation. Cryobiology 32: 114-128. doi:10.1006/cryo.1995.1011

Pincet, F., E. Perez, G. Bryant, L. Lebeau and C. Mioskowski (1994).Long-range attraction between nucleosides with short range specificity: direct measurements. Phys. Rev. Lett. 73: 2780-2783.

Bryant G., E. Perez and A. Sputtek, (1994). The influence of hydroxyethyl starch on phospholipid monolayer isotherms. Cryo-Letts 15:299-308. ISSN: 0143-2044

Koster K. L., M. S. Webb, G. Bryant and D.V. Lynch, (1994).Interactions between soluble sugars and POPC (1-palmitoyl-2-oleoyl-phosphatidylcholine) during dehydration: vitrification of sugars alters the phase behaviour of the phospholipid. Biochim. Biophys. Acta 193: 143-150. doi:10.1016/0005-2736(94)90343-3

Bryant G., I. Heschel and G. Rau, (1994). The influence of gas bubbles on intracellular ice formation. Cryo-Letts 15: 113-118. ISSN: 0143-2044

Bryant G., J.M. Pope and J. Wolfe, (1992). Motional narrowing of the 2HNMR spectra near the chain melting transition of phospholipid / D2O mixtures. Eur. Biophys. J. 21: 363-367. doi:

Bryant G., J.M. Pope and J. Wolfe, (1992). Low hydration phase properties of phospholipid mixtures: evidence for dehydration-induced fluid-fluid separations. Eur. Biophys. J. 21: 223-232. doi: 10.1007/BF00196767

Bryant G. and J. Wolfe, (1992). Interfacial forces in cryobiology and anhydrobiology. Cryo-Letts 13: 23-36. ISSN: 0143-2044

Bryant G. and J. Wolfe, (1989). Can Hydration Forces Induce Lateral Phase Separations in Lamellar Phases? Eur. Biophys. J. 16: 369-374. doi:10.1007/BF00257886

Barnaby E., G. Bryant and J. Wolfe, (1988). Deformation and Motion of Cells in Electric Fields. Studia Biophysica 127: 45-52. ISSN: 0081-6337

Barnaby E., G. Bryant and J. Wolfe, (1988). What is "Dielectrophoresis"? Bioelectrochem. Bioenerg. 19: 347-352. doi:10.1016/0302-4598(88)80015-1

Bryant G. and J. Wolfe, (1987). Electromechanical Stresses Produced in the Plasma Membranes of Suspended Cells by Applied Electric Fields. J. Memb. Biol. 96: 129-139. doi: 10.1007/BF01869239

Box M.A., P. Attard, G. Bryant and B.H.J. McKellar, (1987). Sum rules for Mie scattering. J. Opt. Soc. Am. A 4: 795-799. http://www.opticsinfobase.org/abstract.cfm?URI=josaa-4-5-795

Attard P., M.A. Box, G. Bryant and B.H.J. McKellar, (1986). Asymptotic behaviour of the Mie-Scattering amplitude. J. Opt. Soc. Am. A 3: 256-258. http://www.opticsinfobase.org/abstract.cfm?URI=josaa-3-2-256

Refereed Conference Papers

Martinez, V. G. Bryant and W. van Megen (2006). Slow dynamics and ageing of colloidal hard sphere glasses. Proceedings of the 17th National Congress of the AIP, paper 107, p. 1-4. ISBN 0-9598064-7-4.

Bryant, G., H J. Schöpe, and W. van Megen (2006). Crystallization of hard-sphere colloids – deviations from classical nucleation theory. Proceedings of the 2006 International Conference on Nanoscience and Nanotechnology. IEEE Catalog Number 06EX1411C, ISBN 1-4244-0453-3.

O’Bree, T.A., G. Bryant and A.G. Dekker (2005). Preliminary VSF measurements of Gippsland Lakes’ waters in two planes of polarisation for interpretation of remote sensing images. Proceedings of 16th Congress of the AIP, ISBN 0-9598064-8-2.

Lenné, T., G. Bryant and K. L. Koster (2005). Quantitative study on the effects of sugars on membrane phase transitions – preliminary investigations. Proceedings of 16th Congress of the AIP, ISBN 0-9598064-8-2.

Martin, S., G. Bryant and W. van Megen (2004). Crystallization in Polydisperse Colloidal Suspensions. Proceedings of the 28th Annual Condensed Matter And Materials Meeting, ISBN: 0-643-09171-8.

Wolfe, J. and Bryant, G. (1999) "Physical stresses in cells at low temperatures" 20th International Congress of the Institut International du Froid/International Institute of Refrigeration, Sydney, September 1999. Vol. I, pp 3464-3477. D. Chapman (ed.). ISBN: 2-913149-06-5.

Bryant, G., T.C. Mortensen, S.I. Henderson, S.R. Williams and W. van Megen, (1999). Optical Properties of Polymer Particles used for Contrast Variation studies of Phase Transitions. Slow Dynamics in Complex Systems – AIP Conference Proceedings 469, ISBN: 1-56396-811-8.

Published conference abstracts (refereed)

Kent, B. G. Bryant, C.J. Garvey and D. Cookson (2007). Inhibition of the inverse ribbon phase by sugars in dry DOPC/DOPE mixtures: a synchrotron SAXS study. Eur. Biophys. J. 36: S74. doi:10.1007/s00249-007-0178-7

Koster, K.L. and G. Bryant (2007). Sugar protection of membranes: A trio of mechanisms for a range of water contents. South African Journal of Botany, 73: 488-489. doi:10.1016/j.sajb.2007.04.019

Bryant, G., T. Lenné, K.L. Koster, C.J. Garvey, (2006). Sugar distribution between and around membranes during dehydration. Cryobiology, 53: 404. doi:10.1016/j.cryobiol.2006.10.086

Lenné, T., G. Bryant, K.L. Koster, R. Holcomb, (2006). Quantitative analysis of the effect of sugars on membrane phase transitions and interlamellar hydration forces. Cryobiology, 53: 443. doi:10.1016/j.cryobiol.2006.10.181

Lenné, T., G. Bryant, K.L. Koster, (2005). Quantitative study on the effects of sugars on membrane phase transitions. Cryobiology, 51: 402. doi:10.1016/j.cryobiol.2005.10.001

Bryant, G. and K.L. Koster, (2002). Hydration force analysis of membrane-solute-water systems. Cryobiology, 45: 270. doi:10.1016/S0011-2240(02)00136-0

Bryant, G.,K.L. Koster, P.L. Steponkus and J. Wolfe, (2001). Effect of Sugars on the Stability of Biological and Model Membranes at Low Hydrations: A Consequence of Specific Sugar–Lipid Interactions or Simple Physical Effects of the Solute? Cryobiology, 43: 347. doi:10.1006/cryo.2002.2369

Koster, K.L., K.J. Maddocks and G. Bryant, (2001). Effect of Maltodextrins on Phosphatidylcholine Phase Behavior during Dehydration. Cryobiology, 43: 374. doi:10.1006/cryo.2002.2369

Wolfe, J. and G. Bryant, (1999). The thermodynamics and mechanics of freezing, drying and/or vitrifying membrane-solute-water systems. Cryobiology, 39: 282. doi:10.1006/cryo.1999.2210

Bryant G., I. Heschel and G. Rau, (1994). DSC measurement of cell suspensions during successive freezing runs: Implications for the mechanisms of IIF. Cryobiology, 31: 563. doi:10.1006/cryo.1994.1067

Koster, K.L., G. Bryant and D. V. Lynch, (1993). Interactions between soluble sugars and POPC (1-palmitoyl-2-oleoyl-phosphatidylcholine) during dehydration: vitrification of sugars lowers the Tm of the phospholipid. in T.J. Close and E.A. Bray, eds., “Plant responses to cellular dehydration during environmental stress. American Society of Plant Physiologists”, vol. 10, Rockville, MD. ISBN: 0943088267.

Bryant G. and J. Wolfe, (1993) Membrane damage at low hydrations: lipid phase behaviour and the effect of solutes. Prog. Coll. & Polymer Sci. 93: 187. doi: 10.1007/BFb0118460

Sputtek A., I. Heschel and G. Bryant, (1993). Cryoprotection of Blood Cells by Polymeric Compounds: A discussion of possible mechanisms. Cryobiology 30: 654-655. doi:10.1006/cryo.1993.1064

Bryant G. and J. Wolfe, (1988). Lateral Phase Separations in lipid lamellar phases at low hydration. Cryobiology, 25: 541. doi:10.1016/0011-2240(88)90392-6

Technical Reports and Comments

Wolfe, J., G. Bryant, E. Perez and F. Pincet (1997). Comment on “Is vitrification involved in depression of the phase transition temperature in dry phospholipids? Biochim. Biophys. Acta 1280 (1996) 187-196.” Biochim. Biophys. Acta 1329: 202.

G. Bryant, I Heschel and G Rau, DSC measurement of Intracellular Ice Formation in Lymphocytes during Successive Freezing Runs, Helmholtz-Institut research report, 133-141 (1995). ISBN: 3-925 487-06-9.

M Kresin and G. Bryant, Stability of Undercooled Cryoprotective Solutions with Applications to Cryobiology, Helmholtz-Institut research report, 123-128 (1993). ISBN: 3-925 487-05-0.

I Heschel, M Rödder, C Garberding and G. Bryant, Possible applications of the Power-Down Technique in Cryobiology, Helmholtz-Institut research report, 137-143 (1993). ISBN: 3-925 487-05-0.

Recent Conference Papers and Posters

O'Bree, T. G. Bryant, A. Dekker, V. Brando, D. Antoine and M. Chami, (2008). Modelling volume scattering functions using a multi-modal Mie scattering approach Ocean Optics XIX, 6-10 Oct, Barga, Italy.

Bryant, G., (2007). Dehydration damage in biological membranes: mechanisms, structure and kinetics. Second Annual Conference on The Physics, Chemistry and Biology of Water, 18-21 Oct 2007, Vermont, USA.

Lenné, T., B. Kent, G. Bryant, C.J. Garvey and D. Cookson, (2007). Inhibition of dehydration induced phase changes in lipid membranes by sugars – structural and kinetic SAXS studies. International Soft Matter Conference, October 2007, Aachen, Germany.

Martinez, V., G. Bryant and W. van Megen, (2007). Dynamics of hard sphere glasses: metastability, ageing and the glass transition International Soft Matter Conference, October 2007, Aachen, Germany.

Kent, B., T. Lenné, G. Bryant and C.J. Garvey, (2006) Determination of microphase sugar concentrations in model biological membrane systems by SANS contrast variation. AANSS2006, 11– 13 Dec 2006, Sydney.

B. Kent, Bryant, G., H.-J. Schöpe and W. van Megen, (2005). Glass transition in colloidal hard spheres.” Order, Disorder & Criticality Symposium, ANU, June 2005, Canberra.

Kent, B., T. Lenné, G. Bryant, C.J. Garvey and D. Cookson, (2006). Desiccation Tolerance in Biological Tissue – effects of solutes on membrane phase transitions. ASRP, Melbourne.

Kent, B., T. Lenné, G. Bryant and C.J. Garvey, (2006). Determination of microphase sugar concentrations in model biological membrane systems by SANS contrast variation. ASB, 2006.

Bryant, G., S. Martin and W. van Megen, (2003). The effect of polydispersity on the crystallization kinetics of colloidal hard spheres. Australian Colloid & Interface Symposium (ACIS2003), Sydney, Feb 2003.

Bryant, G. and T. Lenné, (2005). Why do sugars protect biological membranes during dehydration – a preliminary SAXS investigation. Australian X-Ray Analytical Association, RMIT, Aug 2005.

O’Bree, T.A., G. Bryant and A.G. Dekker (2004). VSF measurements of Gippsland Lakes waters in two planes of polarisation. Proceedings of Ocean Optics XVII, October 25-29, Freemantle, Australia.

Koster, K.L. and G. Bryant (2004). Dehydration in model membranes and protoplasts: contrasting effects at low, intermediate and high hydrations. ICPHS, July 2004.

Martin, S., G. Bryant and W. van Megen (2002). The effect of polydispersity on the crystallization kinetics of colloidal hard spheres. 5th Liquid Matter Conference, Konstanz, September, 2002.

Bryant, G., S. Martin and W. van Megen (June 2001) Kinetics of colloidal crystallization at very early times. 4th IDMRCS conference, Crete, June 2001.