Elastic silicon-film-based nanoshells: Formation, properties, and applications

Abstract

Controllable formation and properties of solid single-crystal micro-and nanoshells of various shapes (tubes and spirals, vertically positioned rings and cylinders, and bent and trough-shaped cantilevers) are briefly reviewed, and new results are given. The shells and complicated structures of prescribed size and shape are formed with the use of elastic energy of initial strained SiGe/Si films of nanometer thickness and methods of highly selective and directed detachment of the films from the silicon substrates. It is experimentally demonstrated that the diameters of the fabricated SiGe/Si nanotubes are several times smaller than the values predicted by the continuum elasticity theory. The properties of the shells made of semiconductor and hybrid (metal-semiconductor and metal-dielectricsemiconductor) films and their applications in micro-and nanoscale electrical engineering are discussed.

Analytical solution approach for nonlinear buckling and postbuckling analysis of cylindrical nanoshells based on surface elasticity theory

“…The material properties of bulk and surface layers of nanoshell used to generate the numerical results are given in Table 1 [54,[69][70] . Also, the dimensions of the nanoshells considered here are selected in accordance with the experimental evidences [60,71] . As it was mentioned earlier, the nonlinear critical condition for the axially loaded nanoshell can be obtained through Eq.…”

3D harnessing of light with photon cage

“…A third explorative approach, also developed in our group i , is based on the concept of self-rolling strained multilayers to created 3D novel microcavities of various controllable shapes (nanotubes, nanospirals, rings, cylinders…) 16 .…”

Controlled Assembly and Dispersion of Strain-Induced InGaAs/GaAs Nanotubes

“…It is evident that deviation from the 1 0 0 rolling direction would lead to a twist of rolling, thus nonuniformity in diameter. On the other hand, the elastic anisotropy provides the basis for fabricating sophisticated 3-D architectures [17].…”