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.

中文翻译：

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在环境条件下进行光热机械纳米相加和纳米修复。

我们展示了一种光热机械（OTM）纳米印刷方法，该方法不仅使我们能够以小于100 nm的精度累加印刷纳米结构，还可以校正在环境条件下进行纳米修复的印刷错误。与其他现有的纳米打印方法不同，该方法适用于在气态环境中用连续波（cw）激光束照射软质基材表面上的纳米粒子的情况。激光加热纳米颗粒并引起软基底的快速热膨胀。这种热膨胀可以将纳米颗粒从软表面释放出来进行纳米修复，也可以在存在光力的情况下将其以附加方式转移到另一个表面上，从而以低于100 nm的精度进行纳米打印。研究了影响打印精度的打印机制和参数的详细信息。