KARAKTERISTIK PERMUKAAN FUNGSIONAL TEREKAYASA (ENGINEERED FUNCTIONAL SURFACES) TERINSPIRASI TUMBUHAN KANTUNG SEMAR

Abstract

This research is about study the liquid infused surface (LIS) on pitcher plants and their synthetic surface. One of the important properties of LIS is the result of the contact angle and sliding angle values. The method used in this research is replica molding to print and get the results of the replication of the microstructure. The results shown in this study are the characteristics of the nepenthes based on the contact angle and sliding angle values. The highest contact angle results in the original Nepenthes plant was N. glubosa with a contact angle value of 131.76 ± 90° and the replica of PDMS was 114.09 ± 7.2°. The sliding angle value in the replica using PDMS when not lubricated is more than 900. The sliding angle result for the pitcher plant has the smallest sliding angle, N. Mirrabilis when lubricated with silicone oil is 13±1.2° and when given virgin coconut oil is 14.4±1.7°. The addition of lubricant greatly affects the results of the sliding angle because the lubricant can make the surface slippery.