Spin Coater

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  • Topic: Thin film, Resin, Resin casting
  • Pages : 21 (4187 words )
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  • Published : August 21, 2011
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SUMMER INTERNSHIP PROJECT REPORT

ON

SPIN COATER

SUBMITTED TO

Moser Baer India Pvt. Ltd.

(R&D Department)

Under the supervision of:

Mr. Rajgopal S.

(AGM, Research & Development, Moser Baer India Pvt. Ltd.)

SUBMITTED BY

Harsha Sud

Third Year (V semester)

Roll Number : 39/EC/08

Netaji Subhas Institute of Technology, New Delhi

TABLE OF CONTENTS

PREFACE4

ACKNOWLEDGEMENT4

ABSTRACT5

1.ABOUT MOSER BAER STORAGE MEDIA6

1.1.Overview8
1.INTRODUCTION TO SPIN COATING10

2.SPIN COATING PROCESS DESCRIPTION11

2.1.SPIN SPEED13
2.2.ACCELERATION14
2.3.FUME EXHAUST15
2.4.PROCESS TREND CHARTS17
3.SPECIFIC PROCESS PROBLEMS18

3.1.FILM TOO THIN18
3.2.FILM TOO THICK19
3.3.COMETS, STREAKS OR FLARES19
3.4.SWIRL PATTERN20
3.5. UNCOATED AREAS20
3.6.Pinholes21
3.7.Poor reproducibility21
3.8.Poor film quality22
4.COMPONENTS USED23

4.1.ESR DRIVE23
4.2.Motor25
Motor accessories25
4.3.Pneumatic Arm Mechanism26
CODE30
4.4 Chucks35
Types of chucks used36
BIBLIOGRAPHY38

ACKNOWLEDGEMENT

With sincere thoughts and deep sense of gratitude I would like to acknowledge the contribution of following groups and individual to the development of my project on Spin Coater in the reputed R&D department at Moser Baer India Pvt. Ltd.

In the line I would like to extend my first and foremost gratitude to my mentor Mr. Rajagopal S. (AGM, Moser Baer India Pvt. Ltd.) and Mr. Umesh Gupta (Maintenance Engineer, Moser Baer India Pvt. Ltd.) who have been the key person for me in getting corporate exposure.

A note of thanks to Mr. Shiva Kumar and to all those, too many to single out by names, which have helped in no small measure by cooperating during by providing their valuable time, inputs and assistance.

Their support, guidance and motivation were very valuable and encouraging.

ABSTRACT

We have developed a novel programmable, low cost, spin coater to be used for applications where flat substrates are coated with a uniform thin layer of a desirable material. The equipment is built with AC Servo motor. The automated system offers control, wide speed range (from 0 to 8400 rpm), spin speed stability and compact size.

Spin coating has been used for several decades for the application of thin films. A typical process involves depositing a small puddle of a fluid resin onto the center of a substrate and then spinning the substrate at high speed (typically around 1500 rpm). Centripetal acceleration will cause most of the resin to spread to, and eventually off the edge of the substrate, leaving a thin film of resin on the surface. Final film thickness and other properties will depend on the nature of the resin (viscosity, drying rate, percent solids, surface tension, etc.) and the parameters chosen for the spin process. Factors such as final rotational speed, acceleration, and fume exhaust contribute to how the properties of coated films are defined.

ABOUT MOSER BAER STORAGE MEDIA

Moser Baer India, the second largest manufacturers of optical media in the world, is a technology company focused on the preferred OEM for all 12 of the world's optical media manufacturers and commands a 16% development, manufacture and supply of optical media across the globe. With a strong R&D thrust, the company has been able to lead the technology curve in the optical media business. In the process, it is among the very few Indian companies to have contributed to the establishment of new global technology standards. As a result of this single-minded drive and commitment, Moser Baer became the first storage media company in the world to ship HD DVDs.

In the Indian market, Moser Baer made its foray into the burgeoning domestic optical storage market with the launch of the `moserbaer label in 2003. The company has blazed a new trail by introducing technologically...
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