Sample cells for probing solid/liquid interfaces with broadband sum-frequency-generation spectroscopy

• Verfasst von: Verreault, Dominique [VerfasserIn]
• Verfasst von: Kurz, Volker L. [VerfasserIn]
• Verfasst von: Howell, Caitlin [VerfasserIn]
• Verfasst von: Kölsch, Patrick [VerfasserIn]
• Titel: Sample cells for probing solid/liquid interfaces with broadband sum-frequency-generation spectroscopy
• Verf.angabe: Dominique Verreault, Volker Kurz, Caitlin Howell, and Patrick Koelsch
• E-Jahr: 2010
• Jahr: 24 June 2010
• Umfang: 10 S.
• Fussnoten: Gesehen am 05.09.2023
• Titel Quelle: Enthalten in: Review of scientific instruments
• Ort Quelle: [Erscheinungsort nicht ermittelbar] : American Institute of Physics, 1930
• Jahr Quelle: 2010
• Band/Heft Quelle: 81(2010), 6 vom: Juni, Artikel-ID 063111, Seite 1-10
• ISSN Quelle: 1089-7623
• DOI: doi:10.1063/1.3443096
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1858789362

Abstract

Two sample cells designed specifically for sum-frequency-generation (SFG) measurements at the solid/liquid interface were developed: one thin-layer analysis cell allowing measurement of films on reflective metallic surfaces through a micrometer layer of solution and one spectroelectrochemical cell allowing investigation of processes at the indium tin oxide/solution interface. Both sample cells are described in detail and data illustrating the capabilities of each are shown. To further improve measurements at solid/liquid interfaces, the broadband SFG system was modified to include a reference beam which can be measured simultaneously with the sample signal, permitting background correction of SFG spectra in real time. Sensitivity tests of this system yielded a signal-to-noise ratio of 100 at a surface coverage of 0.2 molecules/nm2. Details on data analysis routines, pulse shaping methods of the visible beam, as well as the design of a purging chamber and sample stage setup are presented. These descriptions will be useful to those planning to set up a SFG spectrometer or seeking to optimize their own SFG systems for measurements of solid/liquid interfaces.