个人简介

B.Sc. (University of Toronto, 2005) M.Sc. (University of Western Ontario, 2007) Ph.D. (University of British Columbia, 2011)

研究领域

Analytical/Environmental Chemical Physics

Our research group is focused on developing methods for the study of microphysical and chemical processes in atmospheric aerosol particles. Some topics of interest include: hygroscopicity and water transport, efflorescence and deliquescence, oxidative aging, and liquid-liquid phase separation. The primary experimental method used by our group is optical trapping. This allows aerosols to be studied at the single particle level where physical parameters can then be determined with high precision and accuracy. Elastic and inelastic light scattering measurements from single particles are taken over time and are used to determine size and composition. We are also interested in the modelling of the interaction of electromagnetic radiation with particles as this is necessary for the interpretation of measurements and important for the development of future instrumentation. In summary, our lab uses single particle spectroscopy and modelling to understand fundamental thermodynamic and kinetic processes in atmospheric aerosols.

近期论文

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Rickards, A. M. J., Song, Y.-C., Miles, R. E. H., Preston, T. C., and Reid, J. P. (2015) Variabilities and uncertainties in characterising water transport kinetics in glassy and ultraviscous aerosol. Physical Chemistry Chemical Physics. DOI: 10.1039/C4CP05383D Dennis-Smither, B. J., Marshall, F. H., Miles, R. E. H., Preston, T. C., and Reid, J. P. (2014) Volatility and oxidative ageing of aqueous maleic acid aerosol droplets and the dependence on relative humidity. Journal of Physical Chemistry A. 118: 5680–5691. Thanopulos, I., Luckhaus, D., Preston, T. C., and Signorell, R. (2014) Dynamics of submicron aerosol droplets in a robust optical trap formed by multiple Bessel beams. Journal of Applied Physics. 115: 154304. Preston, T. C., Mason, B. J., Reid, J. P., Luckhaus, D., and Signorell, R. (2014) Size-dependent position of a single aerosol droplet in a Bessel beam trap. Journal of Optics. 16: 025702. Cai, C., Stewart, D. J., Preston, T. C., Walker, J. S., Zhang, Y., and Reid, J. P. (2014) A new approach to determine vapour pressures and hygroscopicities of aqueous aerosols containing semi-volatile organic compounds. Physical Chemistry Chemical Physics. 16: 3162–3172. Preston, T. C., and Reid, J. P. (2013) Accurate and efficient determination of the radius, refractive index, and dispersion of weakly absorbing spherical particle using whispering gallery modes. Journal of the Optical Society of America B. 30: 2113–2122. Isenor, M., Escribano, R., Preston, T. C., and Signorell, R. (2013) Predicting the infrared band profiles for CO2 cloud particles on Mars. Icarus. 223: 591–601 Preston, T. C., and Signorell, R. (2012) The formation and stability of co-crystalline NH3·C2H2 aerosol particles. Molecular Physics. 110: 2807–2815. Preston, T. C., and Signorell, R. (2012) From plasmon spectra of metallic to vibron spectra of dielectric nanoparticles. Accounts of Chemical Research. 45: 1501–1510. Preston, T. C., and Signorell, R. (2012) Infrared spectroscopy and modeling of co-crystalline CO2·C2H2 aerosol particles. Part 2: The structure and shape of co-crystalline CO2·C2H2 aerosol particles. The Journal of Chemical Physics. 136: 094510. Preston, T. C., Wang, C. C., and Signorell, R. (2012) Infrared spectroscopy and modeling of co-crystalline CO2·C2H2 aerosol particles. Part 1: The formation and decomposition of co-crystalline CO2·C2H2 aerosol particles. The Journal of Chemical Physics. 136: 094509. Preston, T. C., and Signorell, R. (2011) Vibron and phonon hybridization in dielectric nanostructures. Proceedings of the National Academy of Sciences. 108: 5532–5536. Preston, T. C., Firanescu, G., and Signorell, R. (2010) Infrared spectroscopy and vibrational exciton modeling of crystalline, polycrystalline, and amorphous acetylene aerosol particles. Physical Chemistry Chemical Physics. 12: 7924–7933. Preston, T. C., and Signorell, R. (2010) Formation of gold particles on nanoscale toroidal DNA assembled with bis(ethylenediamine)gold (III). Langmuir. 26: 10250–10253. Weiss, A., Preston, T. C., Popov, J., Li, Q., Wu, S., Chou, K. C., Burt, H. M., Bally, M. B., and Signorell, R. (2009) Selective recognition of rituximab-functionalized gold nanoparticles by lymphoma cells studied with 3D imaging. Journal of Physical Chemistry C. 113: 20252–20258. Preston, T. C., and Signorell, R. (2009) Growth and optical properties of gold nanoshells prior to the formation of a continuous metallic layer. ACS Nano. 3: 3696–3706. Preston, T. C., Nuruzzaman, M., Jones, N. D., and Mittler, S. (2009) Role of hydrogen bonding in the pH-dependent aggregation of colloidal gold particles bearing solution-facing carboxylic acid groups. Journal of Physical Chemistry C. 113: 14236–14244.