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Spin coaters are capable of applying uniform thickness polymer films, such as a resist to substrates. Resist is essential for many types of lithography, such as UV lithography. Resists are termed either positive or negative — this denotes whether, when cured, chemical bonds are made or broken, and therefore whether the sections of resist that remain are either the true pattern, or it’s inverse. This selection must be considering etching or deposition stages that may follow as it will help to make.
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