☆ 4.8 Review

Visible-to-UV Photon Upconversion: Recent Progress in New Materials and Applications

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

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Summary: A direct laser writing method based on triplet up-conversion is proposed in this study, which offers low-cost, high-precision, multidimensional, and rapid processing characteristics for low-intensity fabrication of micronanostructures. The feasibility of this method is verified through dynamic modeling and experiments, achieving a minimum line width of micronanostructures (approximately 50 nm) at a laser intensity of 2.5 x 105 W/cm2 and a processing speed of 150 μm/s. Therefore, the direct laser writing method based on triplet up-conversion provides a new approach for low-intensity and high-precision micronanostructure fabrication.

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