Ultrahigh Vacuum – Tip Enhanced Raman Spectroscopy (UHV-TERS)

Ultrahigh vacuum (UHV) Tip Enhanced Raman Spectroscopy (TERS) is a route toward site-specific, single-molecule spectroscopy. All sample preparation and tip degassing are performed in-situ, maintaining atomically clean surfaces, greatly enhancing the stability of the tip-sample junction, and ensuring minimal contamination in the field enhancement region beneath the STM tip. For the first time, Multiple vibrational modes for copper phthalocyanine (CuPc) adlayers on Ag(111) have been resolved in TER spectra obtained concurrently with molecular resolution UHV Scanning tunneling Microscopy (STM). This work sets the stage for Raman vibrational fingerprinting and correlated sub-molecular resolution topography of site-specific binding of high molecular weight species on solid surfaces. This will allow the relationship between large polyatomic molecular adsorbates and solid surfaces to be quantitatively and unambiguously interrogated, thus presenting new opportunities for the study of catalysis, surface functionalization, and related interfacial phenomena.

These studies will be carried out in partial collaboration with the CaSTL Center at the University of California – Irvine. For more information, please visit the center’s website here.

Song Jiang, postdoctoral fellow

Recent Publications:

“Observation of Multiple Vibrational Modes in Ultrahigh Vacuum Tip-Enhanced Raman Spectroscopy Combined with Molecular-Resolution Scanning Tunneling Microscopy,” N. Jiang, E. T. Foley, J. M. Klingsporn, M. D. Sonntag, N. A. Valley, J. A. Dieringer, T. Seideman, G. C. Schatz, M. C. Hersam, and R. P. Van Duyne, Nano Letters 2012 12 (10), 5061-5067.

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  • Professor Richard Van Duyne

    Additional Information

    Discoverer of Surface-enhanced Raman Spectroscopy (1977)
    Inventor of Nanosphere Lithography (1995) & Localized Surface Plasmon Resonance Spectroscopy (2000)

  • Group Members

    Professor Van Duyne has, in his career to date, advised a total of 87 graduate students and 47 postdoctoral fellows. Every year, Professor Van Duyne gives a talk to introduce new graduate students to our research. The 2017 seminar slides are available here.

  • News

    Professor Van Duyne was recently named a Vannevar Bush Faculty Fellow by the U.S. Department of Defense to conduct "high risk, high payoff" basic scientific research. Read more here