title: From crystalline germanium-silicon axial heterostructures to silicon nanowire-nanotubes.
abstract: One-dimensional (1D) nanostructures have attracted considerable attention as a result of their exceptional properties and potential applications. Among them, 1D axial heterostructures with well-defined and controlled heterojunctions between different nanomaterials or between different 1D nanostructures (i.e., nanowire-nanotube heterojunctions) have recently become of particular interest as potential building blocks in future high-performance nano-optoelectronic and nanoelectronic devices. Here, we report on the preparation and characterization of crystalline silicon nanowire-nanotube (SiNW-NT) heterostructures with controlled geometry, kinked and unkinked, and composition using germanium-silicon nanowire heterostructures with abrupt heterojunctions (~2 nm wide) as a template via the VLS-CVD mechanism.
authors.affiliation: School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel Aviv 69978, Israel.
authors.forename: Moshit
authors.initials: M
authors.lastname: Ben-Ishai
authors.forename: Fernando
authors.initials: F
authors.lastname: Patolsky
mesh_terms: D003460:Crystallization / Q000379:methods*; D005857:Germanium / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D005857:Germanium; D012825:Silicon