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Silk patterns made by direct femtosecond laser writing
journal contributionposted on 2016-09-01, 00:00 authored by K Maximova, X Wang, A Balčytis, Linpeng Fan, Jingliang LiJingliang Li, S Juodkazis
Silk patterns in a film of amorphous water-soluble fibroin are created by tailored exposure to femtosecond-laser pulses (1030 nm/230 fs) without the use of photoinitiators. This shows that amorphous silk can be used as a negative tone photoresist. It is also shown that water insoluble crystalline silk films can be precisely ablated from a glass substrate achieving the patterns of crystalline silk gratings on a glass substrate. Bio-compatible/degradable silk can be laser structured to achieve conformational transformations as demonstrated by infrared spectroscopy.
Publication classificationC Journal article; C1 Refereed article in a scholarly journal
Copyright notice2016, AIP
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Science & TechnologyLife Sciences & BiomedicinePhysical SciencesBiochemical Research MethodsBiophysicsNanoscience & NanotechnologyPhysics, Fluids & PlasmasBiochemistry & Molecular BiologyScience & Technology - Other TopicsPhysicsSURFACELITHOGRAPHYBEHAVIORNatural fibersLaser ablationLaser beam effectsAtomic force mircoscopyThin film structure