Water Predictions: Telling when a Nanolithography Mold will Break Through Droplets

Measuring how a drop of water makes contact with the grooves of a nanolithography mold
Measuring how a drop of water makes contact with the grooves of a nanolithography mold to find out how worn out the mold is | Photo courtesy: Jun Taniguchi, Tokyo University of Science
Plot of the contact angle
Plot of the contact angle along the parallel (y) and perpendicular (x) directions versus number of uses of the mold. The mold becomes defective when the contact angle along the vertical direction becomes equal to the stable minimum value along the perpendicular direction. | Photo courtesy: Jun Taniguchi, Tokyo University of Science

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Tokyo University of Science

Tokyo University of Science

Tokyo University of Science (TUS) is one of the most well-known, respected, and the largest science-specialized private research universities in Japan.