Dr Soshan Cheong

Research Fellow

Facilities: Electron Microscope Unit, Solid State & Elemental Analysis Unit
Category: Academic Staff

Education

PhD. Chemistry, Victoria University of Wellington, New Zealand

Role

I hold a joint appointment between the Solid State & Elemental Analysis Unit (SSEAU) and the Electron Microscope Unit (EMU). 
My role at the EMU is to conduct collaborative research in the area of advanced transmission electron microscopy (TEM) imaging and spectroscopic analysis, and help managing the JEOL F200 TEM.
At the SSEAU, I develop techniques and protocols for time-of-flight secondary ion mass spectrometry (ToF-SIMS) analysis on biological and organic-based materials, particularly in 2D and 3D imaging.

Interest

Development and application of TEM and X-ray characterisation techniques on functional nanocrystals. 

Publications

Education

PhD. Chemistry, Victoria University of Wellington, New Zealand

Role

I hold a joint appointment between the Solid State & Elemental Analysis Unit (SSEAU) and the Electron Microscope Unit (EMU). 
My role at the EMU is to conduct collaborative research in the area of advanced transmission electron microscopy (TEM) imaging and spectroscopic analysis, and help managing the JEOL F200 TEM.
At the SSEAU, I develop techniques and protocols for time-of-flight secondary ion mass spectrometry (ToF-SIMS) analysis on biological and organic-based materials, particularly in 2D and 3D imaging.

Interest

Development and application of TEM and X-ray characterisation techniques on functional nanocrystals. 

Publications

25. A. J. McGrath, C. Dolan, S. Cheong, D. A. J. Herman, B. Naysmith, F. Zong, P. Galvosas, K. J. Farrand, I. F. Hermans, M. Brimble, D. E. Williams, J. Jin, R. D. Tilley "Stability of polyelectrolyte-coated iron nanoparticles for T2-weighted magnetic resonance imaging" J. Magn. Magn. Mater. 439, 251-258 (2017). DOI: 10.1016/j.jmmm.2017.04.026

24. T. Q. To, C. Kenny, S. Cheong, L. Aldous "Carbon dioxide as a pH-switch anti-solvent for biomass fractionation and pre-treatment with aqueous hydroxide solutions" Green Chem. 19, 2129-2134 (2017). DOI: 10.1039/C7GC00574A

23.   J.-B. Raina, P. L. Clode, S. Cheong, J. Bougoure, M. R. Kilburn, A. Reeder, S. Foret, M. Stat, V. Beltran, P. Thomas-Hall, D. Tapiolas, C. M. Motti, B. Gong, M. Pernice, C. E. Marjo, J. R. Seymour, B. L. Willis, D. G. Bourne “Subcellular tracking reveals the location of dimethylsulfoniopropionate in microalgae and visualises its uptake by marine bacteria” eLife 6, e23008 (2017). DOI: 10.7554/eLife.23008.001

22.   Y. Zhang, B. Ingham, J. Leveneur, S. Cheong, Y. Yao, D. J. Clarke, G. Holmes, J. Kennedy, S. Prabakar “Can sodium silicates affect collagen structure during tanning? Insights from small angle X-ray scattering (SAXS) studies” RSC Adv. 7, 11665-11671 (2017). DOI: 10.1039/C7RA01160A

21.   K. Presley, J. Hwang, S. Cheong, R. Tilley, J. Collins, M. Viapiano, J. Lannutti “Nanoscale upconversion for oxygen sensing” Mater. Sci. Eng. C 70, 76-84 (2017). DOI: 10.1016/j.msec.2016.08.056

20.   K. F. Presley, S. Cheong, A. Cochran, R. D. Tilley, J. E. Collins, J. J. Lannutti “Upconverter-powered oxygen sensing in electrospun polymeric bilayers” Sens. Actuator B-Chem. 235, 197-205 (2016). DOI: 10.1016/j.snb.2016.04.182

19.   J. Lian, Y. Agban, S. Cheong, R. P. Kuchel, A. Raudsepp, M. A. K. Williams, I. D. Rupenthal, A. Henning, R. D. Tilley, G. Holmes, S. Prabakar “ZnO/PVP nanoparticles induce gelation in type I collagen” Eur. Polym. J. 75, 399-405 (2016). DOI: 10.1016/j.eurpolymj.2016.01.009

18.   A. J. McGrath, Y.-H. Chien, S. Cheong, D. A. J. Herman, J. Watt, A. M. Henning, L. Gloag, C.-S. Yeh, R. D. Tilley “Gold over branched palladium nanostructures for photothermal cancer therapy” ACS Nano 9, 12283-12291 (2015). DOI: 10.1021/acsnano.5b05563

17.   N. Ortiz, J. A. Hommons, S. Cheong, S. E. Skrabalak “Monitoring metal nanoparticle and nanodendrite formation by in situ synchrotron scattering techniques: Ligand-mediated growth and aggregation” ChemNanoMat 1, 109-114 (2015). DOI: 10.1002/cnma.201500006

16.   S. Cheong, L. Graham, G. L. Brett, A. M. Henning, J. Watt, P. J. Miedziak, M. Song, Y. Takeda, S. H. Taylor, R. D. Tilley “Au-Pd core-shell nanoparticles as alcohol oxidation catalysts: effect of shape and composition” ChemSusChem 6, 1858-1862 (2013). DOI: 10.1002/cssc.201300483

15.   R. D. Tilley, S. Cheong “Nanomaterials: Earthworms lit with quantum dots” Nature Nanotech. 8, 6-7 (2013). DOI: 10.1038/nnano.2012.241

14.   D. A. J. Herman, S. Cheong, M. J. Banholzer, R. D. Tilley “How hollow structures form from crystalline iron-iron oxide core-shell nanoparticles in the electron beam” Chem. Commun. 49, 6203-6205 (2013). DOI: 10.1039/c3cc43097a

13.   S. Papst, S. Cheong, M. J. Banholzer, M. A. Brimble, D. E. Williams, R. D. Tilley “One-pot synthesis of water soluble iron nanoparticles using rationally-designed peptides and ligand release” Chem. Commun. 49, 4540-4542 (2013). DOI: 10.1039/c3cc41751d

12.   A. P. LaGrow, S. Cheong, J. Watt, B. Ingham, M. F. Toney, D. A. Jefferson, R. D. Tilley “Can polymorphism be used to form branched metal nanostructures?” Adv. Mater. 25, 1552-1556 (2013). DOI: 10.1002/adma.201204366

11.   J. Watt, S. Cheong, R. D. Tilley “How to control the shape of metal nanostructures in organic solution phase synthesis for plasmonics and catalysis” Nano Today 8, 198-215 (2013). DOI: 10.1016/j.nantod.2013.03.001

10.   J. Watt, C. Yu, S. L. Y. Chang, S. Cheong, R. D. Tilley “Shape control from thermodynamic growth conditions: The case of hcp ruthenium hourglass nanocrystals” J. Am. Chem. Soc. 135, 606-609 (2013). DOI: 10.1021/ja311366k

9.   A. M. Henning, J. Watt, P. J. Miedziak, S. Cheong, M. Santonastaso, M. Song, Y. Takeda, A. I. Kirkland, S. H. Taylor, R. D. Tilley “Gold-palladium core-shell nanocrystals with size and shape control optimised for catalytic performance” Angew. Chem. Int. Ed. 52, 1477-1480 (2013). DOI: 10.1002/anie.201207824

8.   S. Cheong, P. Ferguson, I. F. Hermans, G. N. L. Jameson, S. Prabakar, D. A. J. Herman, R. D. Tilley “Synthesis and stability of highly crystalline and stable iron/iron oxide core/shell nanoparticles for biomedical applications” ChemPlusChem 77, 135-140 (2012). DOI: 10.1002/cplu.201100074

7.   A. P. LaGrow, B. Ingham, S. Cheong, G. V. M. Williams, C. Dotzler, M. F. Toney, D. A. Jefferson, E. C. Corbos, P. T. Bishop, J. Cookson, R. D. Tilley “Synthesis, alignment, and magnetic properties of monodisperse nickel nanocubes” J. Am. Chem. Soc. 134, 855-863 (2012). DOI: 10.1021/ja210209r

6.   A. L. Washington, M. E. Foley, S. Cheong, L. Quffa, C. J. Breshike, J. Watt, R. D. Tilley, G. F. Strouse “Ostwald’s rule of stages and its role in CdSe quantum dot crystallization” J. Am. Chem. Soc. 134, 17046-17052 (2012). DOI: 10.1021/ja302964e

5.   S. Cheong, P. Ferguson, K. W. Feindel, I. F. Hermans, P. T. Callaghan, C. Meyer, A. Slocombe, C.-H. Su, F.-Y. Cheng, C.-S. Yeh, B. Ingham, M. F. Toney, R. D. Tilley “Simple synthesis and functionalization of iron nanoparticles for magnetic resonance imaging” Angew. Chem. Int. Ed. 50, 4206-4209 (2011). DOI: 10.1002/anie.201100562, 10.1002/anie.201102240

4.   D. A. J. Herman, P. Ferguson, S. Cheong, I. F. Hermans, B. J. Ruck, K. M. Allan, S. Prabakar, J. L. Spencer, C. D. Lendrum, R. D. Tilley “Hot-injection synthesis of iron/iron oxide core/shell nanoparticles for T2 contrast enhancement in magnetic resonance imaging” Chem. Commun. 47, 9221-9223 (2011). DOI: 10.1039/c1cc13416g

3.   S. Cheong, J. Watt, R. D. Tilley “Shape control of platinum and palladium nanoparticles for catalysis” Nanoscale 2, 2045-2053 (2010). DOI: 10.1039/c0nr00276c

2.   S. Cheong, J. Watt, B. Ingham, M. F. Toney and R. D. Tilley, “In situ and ex situ studies of platinum nanocrystals: growth and evolution in solution” J. Am. Chem. Soc. 131, 14590-14595 (2009). DOI: 10.1021/ja9065688

1.   J. Watt, S. Cheong, M. F. Toney, B. Ingham, J. Cookson, P. T. Bishop and R. D. Tilley, “Ultrafast growth of highly branched palladium nanostructures for catalysis” ACS Nano 4, 396-402 (2009). DOI: 10.1021/nn901277k

A dual role shared between the Electron Microscope Unit and the SSEAU Surface Analysis Laboratory. The position involves chemical imaging using time-of-flight secondary ion mass spectrometry (ToF-SIMS) and well as collaborative research using high-end TEM.

Location

F10 B87

Contact

+61-2-9385 6383