Vol.3, Iss.3, September 2023

Abstract

The technology of laser-induced selective metallization, or known as laser direct structuring (LDS), on a ceramic substrate was evaluated for the fabrication of antenna circuits. A sieving pattern was scanned by the near IR laser on the ceramic substrate, and electroless copper plating was carried out. Appropriate laser activation conditions were chosen to engrave a contrast pattern on ceramic sheet samples. A chosen condition was used to fabricate a line width evaluation pattern, and the result...

Abstract

Using grape juice as a natural dye source and employing a solvent extraction to isolate anthocyanins and subsequently harnessing them as sensitizers, dye-sensitized solar cells (DSSCs) were fabricated in this study. The extraction process required diverse solvents, including tert-butanol, acetonitrile, acetone, and ethanol, with multiple adjustments and parameter optimizations to determine the most effective ratio in extraction. In the preparation of the photoanode, commercial titanium dioxide p...

Abstract

Human hair, with its high strength-to-weight ratio, can replace expensive materials like glass fibers in composite materials. We developed a novel natural fiber composite material by mixing human hair and coir fibers with polyester resin. To investigate its mechanical properties, the new material was tested for bending strength, impact strength, and water absorption. The specimen IL3, with human hair and coir in a 3:2 ratio, showed a maximum impact strength of 13.174 kJ/m2. The developed materia...