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aj-NATTASAMON2 email: fscinmp@ku.ac.th or nattasamon.p@ku.ac.th
Education: B.Sc. (Physics) Kasetsart University, Thailand
Ph.D. (Physics) Mahidol University, Thailand
Postdoctoral Fellow, University of Notre Dame, USA
Research interests: Advanced Materials

Semiconductors (SCs) are interesting materials which are widely used for many devices such as solar cells, photo detectors and sensors. Due to the quantum confinement effect, the band gap of semiconductor can be tuned by altering its crystal size. There are three different nanostructures of SCs which are quantum dots (zero-dimensional SCs), nanowires (one-dimensional SCs) and nanosheets (two-dimensional SCs) that exhibit different physical and electrical properties. There are many ways to fabricate semiconductor nanomaterials such as lithography and chemical vapor deposition but solution-chemistry is a cost effective method to synthesize nanomaterials compare to the others.

My research interests are focused on development of new solution-chemistry method to fabricate low-dimensional semiconducting nanomaterials as well as their characterization. My current work is to investigate structural and physico-chemical properties of binary and ternary semiconducting nanowires (CdS, CdSe, CdTe, PbS, PbSe), nanowires alloys (e.g. PbSexS1-x), and heterostructures (ZnSe/CdSe and CdSe/CdS core/shell nanowires/quantum dots system). Besides one-dimensional (1D) nanomaterials, I am also working on zero-dimensional (0D) quantum dots and two-dimensional (2D) nanosheets (CdSe, CdTe, TiS2, MoS2) including their applications.
Recently, we found that nanowires strongly respond to static electricity that could be used to assemble nanowires into macroscale structures (yarns, threads, fibers). This lead to a recent paper, “Light In­duced Nanowire Assembly: The electrostatic alignment of semiconductor nanowires into functional macroscopic yarns”.

Selected Publications

1. N. Petchsang, M.P. McDonald, L.E. Sinks, M. Kuno, “Light induced nanowire assembly: The electrostatic alignment of semiconductor nanowires and their assembly into functional macroscopic yarns”, Adv. Mater., 2013, 25, pp. 601-605.

2.  P. Tongying, V. Plashnitsa, N. Petchsang, F. Vietmeyer, G. J. Ferraudi, G. Krylova, M. Kuno, “Photocatalytic hydrogen generation efficiencies in 1D CdSe heterostructures”, J. Phys. Chem. Lett., 2012, 3, pp. 3234–3240.

3.  V. Plashnitsa, F. Vietmeyer, N. Petchsang, P. Tongying, T. Kosel, M. Kuno, “Synthetic strategy, structural and optical characterization of thin highly-crystalline titanium disulfide nanosheets”, J. Phys. Chem. Lett., 2012, 3, pp. 1554-1558.

4.  A. Onicha, N. Petchsang, T. H. Kosel, M. Kuno, “Controlled synthesis of compositionally tunable ternary PbSexS1-x as well as binary PbSe and PbS nanowires”, ACS Nano, 2012, 6 (3), pp. 2833–2843.

5.  N. Petchsang, L. Shapoval, F.  Vietmeyer, Y. Yu, J. H. Hodak, I. M. Tang, T. H. Kosel, M. Kuno, “Low temperature solution-phase growth of ZnSe and ZnSe/CdSe core/shell nanowires”, Nanoscale, 2011, 3, pp. 3145-3151.