We explore mechanical properties of top down fabricated, singly clamped inverted conical GaAs nanowires. Combining nanowire lengths of 2-9 μm 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.
@article{arxiv.1401.4010,
title = {Size-independent Young's modulus of inverted conical GaAs nanowire resonators},
author = {P. Paulitschke and N. Seltner and A. Lebedev and H. Lorenz and E. M. Weig},
journal= {arXiv preprint arXiv:1401.4010},
year = {2014}
}