Atom-by-Atom Construction of a Cyclic Artificial Molecule in Silicon.

ABSTRACT: Hydrogen atoms on a silicon surface, H-Si (100), behave as a resist that can be patterned with perfect atomic precision using a scanning tunneling microscope. When a hydrogen atom is removed in this manner, the underlying silicon presents a chemically active site, commonly referred to as a dangling bond. It has been predicted that individual dangling bonds function as artificial atoms, which, if grouped together, can form designer molecules on the H-Si (100) surface. Here, we present an artificial ring structure molecule spanning three dimer rows, constructed from dangling bonds, and verified by spectroscopic measurement of its molecular orbitals. We found that removing 8 hydrogen atoms resulted in a molecular analog to 1,4-disilylene-hexasilabenzene (Si₈H₈). Scanning

SUBMITTER: Wyrick J 

PROVIDER: S-EPMC6505699 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature