T
T. K. Chan
Researcher at National University of Singapore
Publications - 33
Citations - 789
T. K. Chan is an academic researcher from National University of Singapore. The author has contributed to research in topics: Rutherford backscattering spectrometry & Raman spectroscopy. The author has an hindex of 12, co-authored 33 publications receiving 691 citations.
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Journal ArticleDOI
Magnetism in MoS2 induced by proton irradiation
S. Mathew,Kalon Gopinadhan,T. K. Chan,Xiaojiang Yu,Da Zhan,Liang Cao,Andrivo Rusydi,Mark B. H. Breese,Sankar Dhar,Zexiang Shen,Thirumalai Venkatesan,John T. L. Thong +11 more
TL;DR: In this article, a diamagnetic layered dichalcogenide solid, Molybdenum disulphide, was found to show magnetic ordering at room temperature when exposed to a 2 MeV proton beam.
Journal ArticleDOI
Magnetism in MoS2 induced by MeV proton irradiation
S. Mathew,K. Gopinadhan,T. K. Chan,Xiaojiang Yu,Da Zhan,Liang Cao,Andrivo Rusydi,M. B. H. Breese,Sankar Dhar,Zexiang Shen,T. Venkatesan,John T. L. Thong +11 more
TL;DR: In this paper, a diamagnetic layered dichalcogenide solid, Molybdenum disulphide, was found to show magnetic ordering at room temperature when exposed to a 2 MeV proton beam.
Journal ArticleDOI
The effect of layer number and substrate on the stability of graphene under MeV proton beam irradiation
S. Mathew,T. K. Chan,Da Zhan,Kalon Gopinadhan,A. R. Barman,Mark B. H. Breese,Sankar Dhar,Zexiang Shen,Thirumalai Venkatesan,John T. L. Thong +9 more
TL;DR: In this article, a model of intense electronically-stimulated surface desorption of the atoms as the most likely process for this damage mechanism was proposed, and the damage threshold of graphene samples, subjected to 2 MeV H + irradiation, was found to increase with layer number and also when the graphene layer was supported by a substrate.
Journal ArticleDOI
Mega-electron-volt proton irradiation on supported and suspended graphene: A Raman spectroscopic layer dependent study
S. Mathew,T. K. Chan,Da Zhan,Kalon Gopinadhan,A. Roy Barman,M. B. H. Breese,Sankar Dhar,Zexiang Shen,Thirumalai Venkatesan,John T. L. Thong +9 more
TL;DR: Graphene samples with 1, 2, and 4 layers and 1'+'1 folded bi-layers and graphite have been irradiated with 2 MeV protons at fluences ranging from 1'×'1015' to 6'× '1018' ions/cm2.
Journal ArticleDOI
Tuning the interface conductivity of LaAlO3/SrTiO3 using ion beams: implications for patterning.
S. Mathew,Anil Annadi,T. K. Chan,Teguh Citra Asmara,Da Zhan,Xiao Renshaw Wang,Xiao Renshaw Wang,S. Azimi,Zexiang Shen,Andrivo Rusydi,Ariando,Mark B. H. Breese,Thirumalai Venkatesan +12 more
TL;DR: It is found that this method can be utilized to manipulate the conductivity at the LaAlO3/SrTiO3 interface by carrier localization, arising from the defects created by the ion beam exposure, eventually producing an insulating ground state.