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The study of platinum coated carbon nanotubes as third-order nonlinear optical materials

Ahmad Shah, Noor Aisyah and Ngah Demon, Siti Zulaikha and Diauddin, Farah Nabila and Kasim, Norherdawati and Abdullah, Norli and Krishnan, Ganesan (2021) The study of platinum coated carbon nanotubes as third-order nonlinear optical materials. In: 7th International Conference on Solid State Science and Technology, ICSSST 2019, 11 - 13 November 2019, Putrajaya, Malaysia.

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/SSP.3...


Platinum-multiwall carbon nanotubes (Pt-MWCNTs) was prepared through a chemical reduction and was characterized by using UV–Vis Spectrophotometer, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy with Energy Dispersive X-Ray (FESEM/EDX) and Raman Spectroscopy. Through this chemical reduction, Pt ions were reduced by the addition of sodium dodecyl sulfate (SDS) and Pt was in-situ deposited on the exterior walls of MWCNTs. TEM and FESEM/EDX analyses have confirmed the presence of Pt on the surface of MWCNTs. From Raman Spectroscopy, the ID/IG of MWCNT is 0.66 while ID/IG of Pt-MWCNT is 0.71, showing that not much defects were resulted by the functionalization of Pt on the surface of MWCNT, while from UV-Vis spectra, Pt-MWCNT is found to absorb at about 265 nm due to the presence of Pt nanoparticles that caused a weak surface plasmon resonance (SPR) absorption in the UV region which will contribute to the NLR measurement. The resulted Pt-MWCNTs was then investigated its third-order nonlinearity response as suspension in water using continuous wave laser and z-scan measurement at 532 nm. Pt-MWCNT displays good transmittance profile and selfdefocusing effect with excitation intensity is in order of 10-9 cm2/W. The presence of Pt on the surface of MWCNT has contributed to intrinsic properties and resulted in nonlinear refractive (NLR) effect. Thus, Pt-MWCNT is considered to possess significant third-order nonlinear responses considering its low Pt content and has potential in the development of photonics devices.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:NLO, NLO materials, Nonlinear optics, Platinum coated carbon nanotubes, Pt-MWCNT, Third-order NLO
Subjects:Q Science > QC Physics
ID Code:98172
Deposited By: Widya Wahid
Deposited On:06 Dec 2022 11:56
Last Modified:06 Dec 2022 11:56

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