EastCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom. HiLASE Centre, Institute of Physics of the Czech Academy of Sciences, Za Radnici 828, 25241 Dolní Břežany, Czechia.
Nanotechnology. 2018 Sep 21;29(38):385301. doi: 10.1088/1361-6528/aaceda. Epub 2018 Jun 25.
We show that blister-based-laser-induced forward-transfer can be used to cleanly desorb and transfer nano- and micro-scale particles between substrates without exposing the particles to the laser radiation or to any chemical treatment that could damage the intrinsic electronic and optical properties of the materials. The technique uses laser pulses to induce the rapid formation of a blister on a thin metal layer deposited on glass via ablation at the metal/glass interface. Femtosecond laser pulses are advantageous for forming beams of molecules or small nanoparticles with well-defined velocity and narrow angular distributions. Both fs and ns laser pulses can be used to cleanly transfer larger nanoparticles including relatively fragile monolayer 2D transition metal dichalcogenide crystals and for direct transfer of nanoparticles from chemical vapour deposition growth substrates, although the mechanisms for inducing blister formation are different.
我们证明，基于水疱的激光诱导正向转移可以用于在不将颗粒暴露于激光辐射或任何可能损坏材料固有电子和光学性质的化学处理的情况下，在基底之间干净地解吸和转移纳米级和微尺度颗粒。该技术使用激光脉冲在通过金属/玻璃界面的烧蚀在玻璃上沉积的薄金属层上诱导水疱的快速形成。飞秒激光脉冲有利于形成具有明确定义速度和窄角分布的分子或小纳米颗粒的光束。飞秒和纳秒激光脉冲都可用于干净地转移较大的纳米颗粒，包括相对脆弱的单层二维过渡金属二卤化物晶体，并且可以直接从化学气相沉积生长基底转移纳米颗粒，尽管用于诱导水疱形成的机制不同。
