倒锥形GaAs纳米线谐振器的尺寸无关杨氏模量
Size-independent Young's modulus of inverted conical GaAs nanowire resonators
摘要：
我们探讨自顶向下制造，单钳倒锥形GaAs纳米线的机械性能。将2-9 $μ$ m的纳米线长度与36-935 nm的脚直径组合产生从200 kHz到42 MHz跨越两个数量级的基本弯曲本征模。我们提取的杨氏模量的大小无关的值（45 $\pm$ 3）GPa。随着脚直径下降到几十纳米，所研究的纳米线是有前途的候选人，超柔性和超灵敏的纳米机械设备。
英文摘要：
We explore mechanical properties of top down fabricated, singly clamped inverted conical GaAs nanowires. Combining nanowire lengths of 2-9 $μ$m with foot diameters of 36-935 nm yields fundamental flexural eigenmodes spanning two orders of magnitude from 200 kHz to 42 MHz. We extract a size-independent value of Young's modulus of (45$\pm$3) GPa. With foot diameters down to a few tens of nanometers, the investigated nanowires are promising candidates for ultra-flexible and ultra-sensitive nanomechanical devices.
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