Figure 1: Fabrication Process.
From: Silicon-in-silica spheres via axial thermal gradient in-fibre capillary instabilities
(a) Schematic representation and experimental results of a redrawn Si-core fibre. (Left scale bar—100 μm, Inset—5 μm). (b) Schematics of a high-tension redraw process that allows, upon repeated application, continuous reduction of the Si-core towards the deep submicron regime. (c) Schematics of our gradual liquefaction technique. (d) Photograph of a typical break-up experiment of 4 μm Si-core fiber under pure hydrogen flow of 0.8 l m−1 and vf of 10 μm s−1 (scale bar, 5 mm). the break-up period is 1.2 mm and the resulting sphere size is 31 μm.
