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Making a good impression: Photocurable, liquid perfluoropolyethers (PFPEs) are ideal materials for high-resolution (<100 nm) pattern transfer and imprint lithographic processes (see pictures). PFPEs possess attributes of both elastomers and rigid materials, exhibit a remarkably low surface energy, mold extremely small features with high fidelity, resist swelling by organic solvents, and endure repetitive molding procedures.
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Rolland et al. (2004) studied this question.
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