TN305 2005010726 全数字化激光直写转台系统=An all-digital rotating platform system for laser direct writer[刊,中]／梁宜勇(浙江大学现代光学仪器国家重点实验室．浙江,杭州(310027))∥光电工程．-2004,31(5)．-1-3,10 为提高极...TN305 2005010726 全数字化激光直写转台系统=An all-digital rotating platform system for laser direct writer[刊,中]／梁宜勇(浙江大学现代光学仪器国家重点实验室．浙江,杭州(310027))∥光电工程．-2004,31(5)．-1-3,10 为提高极坐标激光直写设备的性能,设计了全数字化的转台系统,增强了与平台、调焦、光强系统的同步。提出数字锁相积分、可编程PID控制及变周期稳速判据等概念,并应用于转台控制器设计。配合改进的快速光强调制系统,使极坐标激光直写设备具备制作精确环、任意孤和变宽线条的能力。图5参5(严寒)展开更多
Here we report a femtosecond laser direct writing(a precise 3D printing also known as two-photon polymerization lithography) of hybrid organic-inorganic SZ2080^(TM)pre-polymer without using any photo-initiator and app...Here we report a femtosecond laser direct writing(a precise 3D printing also known as two-photon polymerization lithography) of hybrid organic-inorganic SZ2080^(TM)pre-polymer without using any photo-initiator and applying ~100 fs oscillator operating at 517 nm wavelength and 76 MHz repetition rate. The proof of concept was experimentally demonstrated and benchmarking 3D woodpile nanostructures, micro-scaffolds, free-form micro-object “Benchy” and bulk micro-cubes are successfully produced. The essential novelty underlies the fact that non-amplified laser systems delivering just 40-500 p J individual pulses are sufficient for inducing localized cross-linking reactions within hundreds of nanometers in cross sections. And it is opposed to the prejudice that higher pulse energies and lower repetition rates of amplified lasers are necessary for structuring non-photosensitized polymers. The experimental work is of high importance for fundamental understanding of laser enabled nanoscale 3D additive manufacturing and widens technology’ s field of applications where the avoidance of photo-initiator is preferable or is even a necessity, such as micro-optics, nano-photonics, and biomedicine.展开更多
文摘TN305 2005010726 全数字化激光直写转台系统=An all-digital rotating platform system for laser direct writer[刊,中]／梁宜勇(浙江大学现代光学仪器国家重点实验室．浙江,杭州(310027))∥光电工程．-2004,31(5)．-1-3,10 为提高极坐标激光直写设备的性能,设计了全数字化的转台系统,增强了与平台、调焦、光强系统的同步。提出数字锁相积分、可编程PID控制及变周期稳速判据等概念,并应用于转台控制器设计。配合改进的快速光强调制系统,使极坐标激光直写设备具备制作精确环、任意孤和变宽线条的能力。图5参5(严寒)
基金Project(S-MIP-20-17) supported by the Research Council of LithuaniaProject(871124) supported by the EU Horizon 2020, Research and Innovation program LASERLAB-EUROPE JRA。
文摘Here we report a femtosecond laser direct writing(a precise 3D printing also known as two-photon polymerization lithography) of hybrid organic-inorganic SZ2080^(TM)pre-polymer without using any photo-initiator and applying ~100 fs oscillator operating at 517 nm wavelength and 76 MHz repetition rate. The proof of concept was experimentally demonstrated and benchmarking 3D woodpile nanostructures, micro-scaffolds, free-form micro-object “Benchy” and bulk micro-cubes are successfully produced. The essential novelty underlies the fact that non-amplified laser systems delivering just 40-500 p J individual pulses are sufficient for inducing localized cross-linking reactions within hundreds of nanometers in cross sections. And it is opposed to the prejudice that higher pulse energies and lower repetition rates of amplified lasers are necessary for structuring non-photosensitized polymers. The experimental work is of high importance for fundamental understanding of laser enabled nanoscale 3D additive manufacturing and widens technology’ s field of applications where the avoidance of photo-initiator is preferable or is even a necessity, such as micro-optics, nano-photonics, and biomedicine.
