Effects of SiO₂ Nanoparticles on Dielectric Characteristic of Aloe Vera Paste

Abstract:

Natural Aloe vera paste has been reported as an alternative organic dielectric material. In this study, natural Aloe vera paste incorporated with silicon dioxide (SiO₂) nanoparticles (NPs) has been investigated. The natural Aloe vera paste with different weight loading (0.5 to 3.8 wt%) of SiO₂ NPs was screen printed on aluminum (Al) layer supported by a soda lime glass substrate and dried at room temperature. The solidified sample with 1.5 wt% of SiO₂ NPs showed the lowest leakage current density. Next, the solidified samples were additional dried in an oven at 40°C for 30 minutes to study its effect against room temperature. The additional drying process facilitated cross-linking on natural Aloe vera layer and consequently enhanced the dielectric properties of the natural Aloe vera with 1.5 wt% of SiO₂ NPs, whereby leakage current and dielectric constant were decreased and increased, respectively.

• Periodical: Advanced Materials Research (Volume 858)
• Pages: 74-79
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.858.74
• Online since: November 2013
• Authors: Li Qian Khor, Kuan Yew Cheong
• Keywords: Insulator, Leakage Current, Natural Material, Organic Dielectric

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