A study of light amplification and dispersion by surface tension on water droplet above taro (Colocasia Esculenta) leaf

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.211518

Keywords:

taro leaf, hydrophobic, light dispersion, surface chemical reaction, white light

Abstract

Hydrophobic characteristics are widely used in the development of new materials, especially to be applied to the surface coating of materials. This involves amplification of the light exposure on the hydrophobic surface for energy-efficient buildings and photovoltaic energy harvesting systems. The paper discusses the role super-hydrophobic nature of light dispersion falling on the water droplet of the taro leaf surface. Camera and video modes were used to get infrared ray images shot at the water droplet, in dark and bright spaces, with variations in the angle of rays incidence and the volume of droplet. The result shows that the waxy layer surface of the taro leaf has the main structure of alkanes/alkyne with active phenol and aldehydes groups, that peak in 2,648/cm. These active groups bind the atoms (free) of the leaf surface when the leaf surface is in normal conditions. The presence of water bubbles on the surface of the taro leaf causes air to be trapped in the cavity of the lump, forms a silvery layer, resulting in chemical reactions with Mg and K atoms, and dehydrogenation of hydrocarbons. These reactions form metal oxides and hydrogen gas. When the bubble is hit by light, the dispersion tends to strengthen at the light angle greater than 40°, due to the silvery coating of magnesium and potassium oxides and the activity of hydrogen gas, that lead to stronger surface tension and the electron mobility and strengthening water molecules bonds. The activities of these products accelerate atomic movement that amplifies the light energy into white light. This study is expected to be a consideration for the new hydrophobic materials design. Applications for surface coating that can amplify light irradiated on the super-hydrophobic surface are promising for energy-efficient buildings and photovoltaic energy harvesting.

Supporting Agency

  • This research is partly funded by the Directorate of Educators and Education personnel (DITJEN DIKTI) with a scholarship on domestic graduate education (BPP-DN)/BPPS with contract number 940/UN 10.14/KU/2012 through the Graduate program of Universitas Bra

Author Biographies

Gatut Rubiono, Brawijaya University Jl. Mayjend Haryono, 167, Malang, Indonesia, 65145 PGRI University of Banyuwangi Jl. Ikan Tongkol, 22, Kertosari, Kec. Banyuwangi, Kabupaten Banyuwangi, Jawa Timur, 68416, Indonesia

Doctoral Student of Mechanical Engineering

Department of Mechanical Engineering

Mega Nur Sasongko, Brawijaya University Jl. Mayjend Haryono, 167, Malang, Indonesia, 65145

Doctor of Mechanical Engineering

Department of Mechanical Engineering

Eko Siswanto, Brawijaya University Jl. Mayjend Haryono, 167, Malang, Indonesia, 65145

Doctor of Mechanical Engineering

Department of Mechanical Engineering

I Nyoman Gede Wardana, Brawijaya University Jl. Mayjend Haryono, 167, Malang, Indonesia, 65145

Profesor of Mechanical Engineering

Department of Mechanical Engineering

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Published

2020-10-23

How to Cite

Rubiono, G., Sasongko, M. N., Siswanto, E., & Wardana, I. N. G. (2020). A study of light amplification and dispersion by surface tension on water droplet above taro (Colocasia Esculenta) leaf. Eastern-European Journal of Enterprise Technologies, 5(6 (107), 6–19. https://doi.org/10.15587/1729-4061.2020.211518

Issue

Vol. 5 No. 6 (107) (2020): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2020 Gatut Rubiono, Mega Nur Sasongko, Eko Siswanto, ING Wardana

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