Size-independent Young's modulus of inverted conical GaAs nanowire resonators

作者：Paulitschke P^*; Seltner N; Lebedev A; Lorenz H; Weig E M

来源：Applied Physics Letters, 2013, 103(26): 261901.

DOI：10.1063/1.4851897

We explore mechanical properties of top down fabricated, singly clamped inverted conical GaAs nanowires. Combining nanowire lengths of 2-9 mu 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 +/- 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.

• 出版日期2013-12-23