WANG Xuesen

PhD, University of Maryland, College Park, USA (1990)

Associate Professor
Office : S13-03-09  |  Tel : (65) 6516 2961
Email : phywxs@nus.edu.sg

Current Research

  • Scanning tunneling microscopy and spectroscopy (STM/STS) characterization of surfaces, thin films and nanostructures.

  • Self-assembly of functional hybrid nanostructures from combination of semiconductor, metal, semimetal and organic materials, such as organic molecule-metal nanoparticle for molecular electronics, and semiconductor-metal hybrid for photocatalysis.

  • Growth, STM/STS characterization and computational studies of Bi, Sb and P ultrathin films and nanostructures for novel electronic and spintronic applications.

Green Gold: Gold nanoparticles covered with PTCDA molecules. Their height and lateral size are about 2 nm and 3-5 nm, respectively. Their plasmonic resonance is strongly blueshifted so they may appear green instead of golden. Additionally, they are effective catalyst for CO conversion to CO2.

Selected Publications

  1. G. Yao, Z. Luo, F. Pan, W. Xu, Y. P. Feng, & X.S. Wang, Evolution of Topological Surface States in Antimony Ultra-Thin Films, Scientific Reports 3, 2010 (2013).

  2. X. Chu, G. Yao, A. T. S. Wee, X.S. Wang, Size-tunable Au nanoparticles on MoS2(0001), Nanotechnology 23, 375603 (2012).

  3. X.S. Wang, S.S. Kushvaha, X. Chu, H. Zhang, Z. Yan, and W. Xiao, “Selective self-assembly of semi-metal straight and branched nanorods on inert Substrates”, in: AV Narlikar. YY Fu (eds), The Oxford Handbook of Nanoscience and Nanotechnology, Vol. 2, Materials (Oxford University Press), p. 572 (2010).

  4. H. Zhang, S.S. Kushvaha, S. Chen, X. Gao, D. Qi, A.T.S. Wee, and X.S. Wang, “Synthesis and magnetic properties of MnSb nanoparticles on Si-based substrates”, Appl. Phys. Lett. 90, 202503 (2007).

Affiliations & Links