Thickness Dependant Effective Radius of an Optical Trapping Toward Water-Air Interface
Muhamad Safuan Mat Yeng1, Mohd Farid Mohamad Yusof2, Shahrul Kadri Ayop3

1Muhamad Safuan Mat Yeng, Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris,  Tanjong Malim, Perak, Malaysia.

2Mohd Farid Mohamad Yusof, Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjong Malim, Perak, Malaysia.

3Shahrul Kadri Ayop, Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris,  Tanjong Malim, Perak, Malaysia.

Manuscript received on 05 June 2019 | Revised Manuscript received on 12 June 2019 | Manuscript Published on 19 June 2019 | PP: 91-93 | Volume-8 Issue-8S June 2019 | Retrieval Number: H10170688S19/19©BEIESP

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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This study aimed to determine the effect of sample thickness on optical trapping towards water-air interface. 3 µm polystyrene bead was diluted in deionised water and transferred to special test cell design to form 18, 70 and 141 µm. Bead was trapped by 975 nm laser from 20 to 220 kW/cm2 from the bottom glass-water interface towards water-air interface. The result showed that the bead is more confined with smaller effective radius in higher water thickness.

Keywords: Effective Radius, Optical Trapping, Water-Air Interface.
Scope of the Article: Fuzzy Logics