论文标题
范德华的光热反应性基于材料的纳米力学谐振器
Photothermal responsivity of van der Waals material-based nanomechanical resonators
论文作者
论文摘要
由范德华材料（VDW NMR）制成的纳米力学谐振器为感测吸收激光功率提供了一种新工具。从光吸收引起的谐振频移量化的VDW NMR的光热响应将在掺入Fabry-Perot（FP）干涉仪中时增强。随着增强功能，光热反应对NMR位移的依赖性，这是缺乏研究的。在这里，我们通过研究在高反射性底物上制造的电动驱动的diselenide drumheads来解决知识差距。我们使用FP介导的吸收加热模型来解释光热反应的测得变化。该模型预测在几层和单层NBSE $ _ {2} $ drumheads上的光热响应的幅度和调整范围更高，在激光波长$ 532 \，$ nm $ nm的激光波长上，它以其他夹具的VDW vdw drumpe nmrs的速度优于其他夹具的VDW鼓型NMR。对该模型的进一步分析表明，NBSE $ _ {2} $ Drumheads比例的幅度和调谐范围都具有厚度，从而建立了一个基于FP介导的VDW NMR构建验仪的基于位移的框架。
Nanomechanical resonators made from van der Waals materials (vdW NMRs) provide a new tool for sensing absorbed laser power. The photothermal response of vdW NMRs, quantified from the resonant frequency shifts induced by optical absorption, is enhanced when incorporated in a Fabry-Perot (FP) interferometer. Along with the enhancement comes the dependence of the photothermal response on NMR displacement, which lacks investigation. Here, we address the knowledge gap by studying electromotively driven niobium diselenide drumheads fabricated on highly reflective substrates. We use a FP-mediated absorptive heating model to explain the measured variations of the photothermal response. The model predicts a higher magnitude and tuning range of photothermal responses on few-layer and monolayer NbSe$_{2}$ drumheads, which outperform other clamped vdW drum-type NMRs at a laser wavelength of $532\,$nm. Further analysis of the model shows that both the magnitude and tuning range of NbSe$_{2}$ drumheads scale with thickness, establishing a displacement-based framework for building bolometers using FP-mediated vdW NMRs.
