Additive Opto-Thermomechanical Nanoprinting and Nanorepairing under Ambient Conditions
Additive Opto-Thermomechanical Nanoprinting and Nanorepairing under Ambient Conditions
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DOI：
10.1021/acs.nanolett.0c01261
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发表时间：
2020-07-08
期刊：
影响因子：
10.8
通讯作者：
Zhao, Chenglong
中科院分区：
文献类型：
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作者：
Alam, Md Shah;Zhan, Qiwen;Zhao, Chenglong
我们展示了一种光热机械 (OTM) 纳米打印方法，该方法不仅允许我们以亚 100 nm 的精度增材打印纳米结构，而且还可以纠正环境条件下纳米修复的打印错误。与其他现有的纳米打印方法不同，该方法在气态环境中用连续波（CW）激光束照射软基材表面上的纳米颗粒时起作用。激光加热纳米粒子并引起软基底的快速热膨胀。这种热膨胀可以从软表面释放纳米颗粒进行纳米修复，或者在光学力存在的情况下将其附加转移到另一个表面，以实现亚 100 nm 精度的纳米打印。研究了打印机制的细节和影响打印精度的参数。这种增材 OTM 纳米打印技术为环境条件下快速且经济实惠的纳米级增材制造或 3D 打印铺平了道路。
We demonstrate an opto-thermomechanical (OTM) nanoprinting method that allows us not only to additively print nanostructures with sub-100 nm accuracy but also to correct printing errors for nanorepairing under ambient conditions. Different from other existing nanoprinting methods, this method works when a nanoparticle on the surface of a soft substrate is illuminated by a continuous-wave (cw) laser beam in a gaseous environment. The laser heats the nanoparticle and induces a rapid thermal expansion of the soft substrate. This thermal expansion can either release a nanoparticle from the soft surface for nanorepairing or transfer it additively to another surface in the presence of optical forces for nanoprinting with sub-100 nm accuracy. Details of the printing mechanism and parameters that affect the printing accuracy are investigated. This additive OTM nanoprinting technique paves the way for rapid and affordable additive manufacturing or 3D printing at the nanoscale under ambient conditions.