Advances in Environmental Biology, 8(3) Special 2014, Pages: 729-733 AENSI Journals Advances in Environmental Biology ISSN-1995-0756 EISSN-1998-1066 Journal home page: http://www.aensiweb.com/aeb.html Corresponding Author: M.M. Rashid, Dept of Mechatronics Engineering, Faculty of Engineering, International Islamic University of Malaysia, 53100, Kuala Lumpur, Malaysia. E-mail: mahbub@iium.edu.my. Tel: 03-6196 4493. Design and Fabrication of a Simple Cost Effective Spin Coater for Deposition of Thin Film Mohammad Meftahul Ferdaus, M.M. Rashid and Mohammad Ataur Rahman Department of Mechatronics Engineering and Department of Mechanical Engineering, Faculty of Engineering, International Islamic University of Malaysia, 53100, Kuala Lumpur ARTICLE INFO ABSTRACT Article history: Received 14 Feb 2014 Received in revised form 24 February 2014 Accepted 29 March 2014 Available online 14 April 2014 Key words: Spin coating, zinc oxide, thin films, film deposition, substrate. This paper describes the design and fabrication of an economical spin coater for depositing thin films.Spin coater is a machine that can dispense a liquid onto a substrate uniformly. Some desirable properties of Spin coater such as ability to make defect free and uniform thin film, accuracy in rotation control together with a closed optimized process chamber etc. are maintained in this prototype spin coater.The materials used for making thin filmliquefied in a volatile solvent. Here the system is fabricated by using a dc motor and simple electronics circuit, in which the spinning speed can be controlled very easily. In this design the spinning speed is up to 3,000 rpm that can be controlled step by step manually. ZnO thin films are successfully prepared through this spin coater by sol-gel process. This thin film isa mixture of Zinc acetate dihydrate, ethanol anddi-ethanolamine. Thin filmdeposition by this cost effective spin coater is a very simple technique and can beused widelyfor preparing films of uniform thickness. © 2014 AENSI Publisher All rights reserved. To Cite This Article: Mohammad Meftahul Ferdaus, M.M. Rashid and Mohammad Ataur Rahman., Design and fabrication of a simple cost effective spin coater for deposition of thin film. Adv. Environ. Biol., 8(3), 729-733, 2014 INTRODUCTION Now a day’s thin film science and technology started to play an important role in the advanced technological industries. Initiallythe only purpose of the development of thin film technology wasto satisfy the requirement of the integrated circuit industry. But day by day the demand for high speed smaller and smaller devices increases, so for development ofhigher speedsmaller and smaller devices especially in new generation of integrated circuits requires advanced materials and new processing techniques appropriate for integration technology. Thin films technology can play a vital role to achieve this goal as they are capable of satisfying those requirements. Over the past four decades the making of thin films for device purposes has been industrialized. In many real-world problems thin films are very important as a two dimensional system. Their material costs are very lowwhereas the price of corresponding bulky materials are high and they perform the same function and sometimes even betteraccording to surface processes [1]. So, information and determination of the nature, functions and new properties of thin films can be used for the development of new technologies that are appropriate for future applications.The layers of thin films are ranging from fractions of a nanometre to several micrometres in thickness[2]. Thin film deposition has mainly three major technique such as solid, liquid and gas deposition technique. Chemical Vapour Deposition and Physical Vapour Deposition are gas deposition method. These methods are comparatively expensive. Spray pyrolysis is another popular method of depositing thin film. But it has some limitations such as surface thickness is uncontrollable, not crack free, processing time is high etc.In thin film deposition temperature control is very essential, but in spray Pyrolysis it is very difficult to control temperature. Compare to others Spin coating is a fast and simple method for producing thin and homogeneous organic films. Inproduce uniform thin is technique thin filmsare produced on a flat substrate. The equipment for spin coating process is known as spin coater, or simply spinner. In short, more than necessaryquantity of a solution is employed on the substrate, then it starts rotating and the rotation speed continuously increases and finally rotated at high speedfor spreading the fluid due to centrifugal force.This process was first explained by a number of authors [3,4] using several simplifications. Fabrication and Manufacturing techniques of these devices are comparativelyeasybecause of the availability of the necessary equipment.Repeatability is one of the most vital factors in spin coating. Several methods to grow inorganic