title: Nanoscale mapping of catalytic activity using tip-enhanced Raman spectroscopy.
abstract: Chemical mapping of a photocatalytic reaction with nanoscale spatial resolution is demonstrated for the first time using tip-enhanced Raman spectroscopy (TERS). An ultrathin alumina film applied to the Ag-coated TERS tip blocks catalytic interference whilst maintaining near-field electromagnetic enhancement, thus enabling spectroscopic imaging of catalytic activity on nanostructured Ag surfaces.
authors.affiliation: Analytical Science Division, National Physical Laboratory, Hampton Road, Teddington, Middlesex TW11 0LW, UK. debdulal.roy@npl.co.uk.
authors.forename: N
authors.initials: N
authors.lastname: Kumar
authors.forename: B
authors.initials: B
authors.lastname: Stephanidis
authors.forename: R
authors.initials: R
authors.lastname: Zenobi
authors.forename: A J
authors.initials: AJ
authors.lastname: Wain
authors.forename: D
authors.initials: D
authors.lastname: Roy