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Micro/nano processing of natural silk fibers with near-field enhanced ultrafast laser
- Source :
- Science China Materials. 63:1300-1309
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Silkworm silk fiber is an attractive material owing to its remarkable mechanical characteristics, excellent optical properties, and good biocompatibility and biodegradability. However, nano-processing of the silk fiber is still a challenge limiting its applications in nanoengineering and related fields. Herein, we report localized near-field enhancement-assisted ablation with an ultrafast laser to break this bottleneck. Localized processing of silk fiber, including nano-holing, nano-grooving, and cutting could retain the key molecular structure building blocks and the pristine functionality of the silk fiber. An extremely narrow nanohole with a width of ~64 nm was successfully achieved. The processed silk fiber can be used to transfer micro/nanoparticles and drugs, showing potential for biomedical engineering. The processing strategy developed in this study can also be extended to other materials, paving a new way for fabricating functional nanostructures with precisely controlled size and morphology.
- Subjects :
- Materials science
Laser ablation
Nanostructure
Biocompatibility
Nanoparticle
Nanotechnology
02 engineering and technology
Nanoengineering
010402 general chemistry
021001 nanoscience & nanotechnology
Laser
01 natural sciences
0104 chemical sciences
law.invention
SILK
law
General Materials Science
0210 nano-technology
Ultrashort pulse
Subjects
Details
- ISSN :
- 21994501 and 20958226
- Volume :
- 63
- Database :
- OpenAIRE
- Journal :
- Science China Materials
- Accession number :
- edsair.doi...........89b0f74cdf2a931dea7844671d504001