Controllable deformation of silicon nanowires with strain up to 24%

Abstract

Fabricated silicon nanostructures demonstrate mechanical properties unlike their macroscopic counterparts. Here we use a force mediating polymer to controllably and reversibly deform silicon nanowires. This technique is demonstrated on multiple nanowire configurations, which undergo deformation without noticeable macroscopic damage after the polymer is removed. Calculations estimate a maximum of nearly 24% strain induced in 30 nm diameter pillars. The use of an electron activated polymer allows retention of the strained configuration without any external input. As a further illustration of this technique, we demonstrate nanoscale tweezing by capturing 300 nm alumina beads using circular arrays of these silicon nanowires.

Magnetized Spiral Chains of Plasmonic Ellipsoids for One-Way Optical Waveguides

“…Structures as in Fig. 1 were fabricated using force mediating polymer to bend silicon nanopillars [10], that can be coated by metal. Bending angle can reach 50 − 60 • and it can be tuned by varying, e.g., electron beam exposure.…”

One way optical waveguides for matched non-reciprocal nanoantennas with dynamic beam scanning functionality

“…1. Similar structures were fabricated in [24] for different applications. The system consists of N particles; the n -th is centered at n z nd = , and rotated by n θ ∆ about the z axis.…”

Green's function theory for one-way particle chains

“…7 This structure has three appealing properties: (a) nanoscale transverse size, (b) propagation in the "forbidden" direction decays exponentially by about two orders of magnitude over distances of O(λ), and (c) B 0 is weaker than that used in other magnetization-based one-way structures. However, although chiral nanochains were already fabricated, 10 they may be difficult to implement. The second example (see Fig.…”