Good (molecular) vibrations (1998) By the late 1990s, many researchers had published studies that exploited the STM’s ability to reproducibly manipulate and image individual atoms and molecules. Taking an important step forward, Ho showed that the instrument could also be used to record the vibrational signatures of individual molecules adsorbed on a surface, thereby turning the STM into a chemically specific microspectrometer. In one key study, Ho and coworkers—at that time based at Cornell University—deposited acetylene on a copper surface, then used a homemade STM to move and image the molecules and to measure molecular vibrations via inelastic electron tunneling spectra (Science 1998, DOI: 10.1126/science.280.5370.1732).
by Mitch Jacoby |
November 10, 2019