Photolithography

Overview

NISE Network product
Photolithography

Description: 

This activity is designed for high school students. In this experiment students use UV light to transfer a pattern (either a network of very small metal wires or self-drawn patterns) onto a surface-- a plastic board. The pattern is transferred by placing a mask (transparency sheet with the pattern) on a plastic board. The board is coated with a copper film that is covered with a light-reactive polymer (photo-resist). The polymer is exposed to UV light through the mask to make a pattern in the polymer. The metal under the exposed polymer is then chemically etched, leaving only the pattern on the surface of the board as determined by the mask. This top-down approach to nanotechnology is commonly used in manufacturing circuit boards for computers and other electronics.

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Audience

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Creative Commons
Attribution Non-Commercial Share Alike

Standards

Physical science: 

9-12: Interactions of energy and matter
9-12: Chemical reactions
9-12: Motions and forces
9-12: Structure and properties of matter
9-12: Structure of atoms

Science and Technology: 

9-12: Abilities of technological design

Science as inquiry: 

9-12: Abilities necessary to do scientific inquiry

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