Nanosecond pulsed laser induced efficient photophoresis actuating of graphene sponge
Nanosecond pulsed laser induced efficient photophoresis actuating of graphene sponge
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纳秒脉冲激光诱导石墨烯海绵高效光电驱动
DOI：
10.1016/j.vacuum.2022.111388
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发表时间：
2022-10
期刊：
影响因子：
4
通讯作者：
Xia Wang
中科院分区：
文献类型：
--
作者：
Qingyue Zhang;Lei Wang;Qiuling Zhao;Xia Wang
由于光与功的高效转换，光致驱动在跨尺度光驱动操纵和无燃料飞行中显示出巨大的潜力。然而，尽管快速光响应驱动的电泳在光驱动操作中很重要，但很少有报道。本工作利用自制的灵敏检测系统研究了石墨烯海绵材料（PLPGS）的脉冲激光诱导发光，并通过光杠杆法定量测量了驱动力。宏观石墨烯海绵材料可以由 3-5 ns 单激光脉冲重复驱动。输入激光脉冲能量密度为4.0 mJ/cm 2 时驱动力为1.8 μN，70 μJ/cm 2 以下的超低激光脉冲能量即可触发PLPGS。 PLPGS被证明具有快速响应、可重复、低能量和非破坏性的特点。 • 实现了纳秒脉冲激光诱导石墨烯海绵电泳（PLPGS）。 • 输入脉冲能量为4.0 mJ/cm 2 时，激光驱动力为1.8 μN。 • PLPGS 可由低于70 μJ/cm 2 的超低脉冲能量触发。 • PLPGS 具有高度可重复性和非破坏性。
Photophoresis actuating shows great potentials in cross-scale light-driven manipulation and fuel-free flight due to efficient conversion of light-to-work. However, photophoresis actuating with rapid light response is rarely reported although it is important in light-driven manipulation. In this work, the pulsed laser induced photophoresis of graphene sponge material (PLPGS) is investigated by a homemade sensitive detection system, and the actuating force is measured quantitatively by an optical lever method. The macroscale graphene sponge material can be driven by a 3–5 ns single laser pulse reproducibly. The actuating force is 1.8 μN when the input laser pulse energy density is 4.0 mJ/cm 2 , and the PLPGS can be triggered by ultra-low laser pulse energy below 70 μJ/cm 2 . The PLPGS is proved to be quick-response, repeatable, low-energy, and non-destructive. • Nanosecond pulsed laser induced photophoresis of graphene sponge (PLPGS) is achieved. • The laser actuating force is 1.8 μN for the input pulse energy of 4.0 mJ/cm 2 . • The PLPGS can be triggered by ultra-low pulse energy below 70 μJ/cm 2 . • The PLPGS is highly repeatable and non-destructive.
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