论文标题
低维材料的可调双轴应变装置
Tunable biaxial strain device for low dimensional materials
论文作者
论文摘要
菌株吸引了很大的兴趣，这是一种含义稀薄的去角质二维材料及其异质结构的特性。在文献中提出了许多用于应用可调单轴菌株的设备，但对于双轴菌株，只有很少的设备在最大应变和均匀性，可逆性和设备尺寸之间经常进行权衡。我们提出了一种紧凑的装置，该设备允许控制均匀的平面双轴应变，最大变形和均匀性可与在更大的设备中发现的相当。其在样品区域上的性能和应变均匀性是使用有限元分析对其进行建模的，并通过测量拉曼光谱法对exfoliated 2h-mos $ _2 $应压的响应进行了证明。
Strain is attracting much interest as a mean to tune the properties of thin exfoliated two-dimensional materials and their heterostructures. Numerous devices to apply tunable uniaxial strain are proposed in the literature, but only few for biaxial strain where there is often a trade-off between maximum strain and uniformity, reversibility and device size. We present a compact device that allows the controlled application of uniform in-plane biaxial strain, with maximum deformation and uniformity comparable to those found in much larger devices. Its performance and strain uniformity over the sample area are modeled using finite element analysis and demonstrated by measuring the response of exfoliated 2H-MoS$_2$ to strain by Raman spectroscopy.
