利用近场增强超快激光对天然蚕丝进行微纳加工（英文）
发布时间：2023-06-15 18:40
桑蚕丝因具有突出的力学性能、优异的光学特性和良好的生物相容性而备受关注.但目前尚缺乏对单根天然蚕丝进行纳米级加工的手段,因而限制了蚕丝在纳米工程等领域的应用.本文利用局部近场增强超快激光在蚕丝表面实现了纳米级加工,并进一步实现了纳米孔、纳米槽的制备以及对蚕丝的精密切割.形貌和成分测试结果表明,该方法在不破坏蚕丝关键分子结构模块和原有功能的前提下实现了最小宽度仅为64 nm椭圆孔的加工.此外,本文还将超快激光加工的蚕丝用于微纳颗粒、药物输运,预示了本方法在生物医学工程领域的广泛应用前景.本文所报道的近场增强超快激光加工方法不仅可用于蚕丝的纳米级加工,也有望在其他材料上实现高精度、可控制备功能性纳米结构.
【文章页数】：10 页
【文章目录】：
INTRODUCTION
EXPERIMENTAL SECTION
Preparation of degummed silkworm silk fibers
Femtosecond laser processing
Simulation
Characterization
Transfer of polystyrene(PS)microsphere
RESULTS AND DISCUSSION
Far-field laser ablation and localized near-field enhancement-assisted ablation
Drilling on individual silk fiber using the femtosecond laser
Characterization of laser-processed silk fibers
Biocompatible carrier and patterning on silk fabric
CONCLUSIONS
本文编号：3833492
【文章页数】：10 页
【文章目录】：
INTRODUCTION
EXPERIMENTAL SECTION
Preparation of degummed silkworm silk fibers
Femtosecond laser processing
Simulation
Characterization
Transfer of polystyrene(PS)microsphere
RESULTS AND DISCUSSION
Far-field laser ablation and localized near-field enhancement-assisted ablation
Drilling on individual silk fiber using the femtosecond laser
Characterization of laser-processed silk fibers
Biocompatible carrier and patterning on silk fabric
CONCLUSIONS
本文编号：3833492
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