Construction of cost effective homebuilt spin coater for coating amylose-amylopectin thin films

Abstract

We report the construction of a cost effective and low power consumption spin coater from a direct current (DC) brushless motor. The DC mechanical component is widely available in the central processing unit (CPU) cooler. This set up permits simple operation where the D voltage can be controlled manually in order to adjust the spin speed ranging from 1500 to 4500 resolution per minute (rpm). The spin speed stability can be determined by a tachometer against the spinning time. In order to evaluate the performance of the Amylose-75% Amylopectin thin films were successfully deposited on SiO thicknesses of the films were in the range of 96.1 nm to 225 nm.

Design and Construction of Home-Made Spin Coater for OLED Production

“…Nowadays, there have been many efforts to build up the low cost spin coater [9][10][11][12][13][14][15] in order to produce several thin films. A simple way of making a home-made spin coater is to use an Arduino microcontroller and a DC motor.…”

“…While coating, airflow and turbulence on the substrate should be minimized or at least kept constant [12]. The film thickness is determined by the spinning speed and the coating time according to the evaporation rate of the liquid [13][14][15].…”