Special Programme in Science (SPS)

SPS Alumni Talk by Dr Goh Jing Qiang

We are delighted to have Dr. Goh Jing Qiang delivered our first SPS Alumni Talk in 2017, on 8 February. Jing Qiang belongs to SPS 2006. He was a headmentor in AY 2009/2010. Upon the completion of his Master Degree in Physics at NUS, he went to Tampere University of Technology for his PhD research in Finland. His past research primarily focused on developing a computational model for recording behaviour of magnetic materials and performing quantum chemical simulations on nanoclusters.

Nanocluster refers to a nanosized aggregate of atoms, which is approximately a thousand times smaller than the width of a human hair. Some selected nanoclusters can behave as if they were atomic-like objects even though they comprise groups of different elements. The atomic-like behaviour has similarity to the closed-shell electronic configuration of the noble gases such that the nanoclusters are only exceptionally stable if they have a specific number of atoms. These specialised nanoclusters are referred to as superatoms. The superatomic behaviour is mainly associated with the delocalised electrons of the metal core atoms. The superatom model has been widely used to explain the superatomic properties of nanoclusters with pure metal core atoms, such as sodium nanoclusters and thiolate-protected gold nanoclusters. In contrast to this, Jing Qiang's PhD research extends the applicability of the superatom model to nanoclusters having mixed metal and non-metal core atoms, such as thiolate-protected silver sulfide nanoclusters.

He eventually received his PhD degree in 2016, and now he is back in Singapore, seeking for new opportunities. We wish all the best in his future endeavour.

Figure 1: Dr Goh Jing Qiang (second from left) presenting his PhD work for SPS Alumni Talk