Microscopy with a single-molecule scanning electrometer

Joonhee Lee, Nicholas Tallarida, Xing Chen, Lasse Jensen, V. Ara Apkarian

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


The vibrational spectrum of a single carbon monoxide molecule, adsorbed on the tip apex of a scanning tunneling microscope, is used to image electrostatic fields with submolecular spatial resolution. The method takes advantage of the vibrational Stark effect to image local electrostatic fields and the single-molecule sensitivity of tip-enhanced Raman scattering (TERS) to optically relay the signal. We apply the method to single metalloporphyrins adsorbed on Au(111) to image molecular charges, intramolecular polarization, local photoconductivity, atomically resolved hydrogen bonds, and surface electron density waves.

Original languageEnglish (US)
Article numbereaat5472
JournalScience Advances
Issue number6
StatePublished - Jun 29 2018

All Science Journal Classification (ASJC) codes

  • General


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