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This article discusses the methods that can control the shape of nanocrystals, primarily to regulate nanoparticle complexity.

Colloidal nanocrystals (CNs) are artificially grown inorganic particles stabilized by surfactants. Those smaller than 10 nm can transform their optical and electronic properties and exhibit a quantum confinement effect.

Abstract Wire Arc Additive Manufacturing (WAAM) of large thin-walled aluminium structures in the aerospace field has significant advantages over traditional subtractive approaches. The technique is based on arc welding and wire filler material, and the thin-walled structures are built up layer-by-layer. However, for the parts with sharp corners, the shape control poses a challenge due to the occurring of an inevitable self-overlapping of the deposition at corners. Since aluminium alloys are sensitive to heat, the undesired materials stacked at corners with excessive heat input reducing not on...