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World First for Diamond in Synchrotron-Based IR Photothermal Nanospectroscopy

DOI: 10.1080/08940886.2016.1198675 DOI Help

Authors: Gianfelice Cinque (Diamond Light Source) , Chris S. Kelley (Diamond Light Source) , Mark D. Frogley (Diamond Light Source) , Jacob Filik (Diamond Light Source) , Katia Wehbe (Diamond Light Source) , Ann Fitzpatrick (Diamond Light Source) , Paul M. Donaldson (Central Laser Facility)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Synchrotron Radiation News , VOL 29 , PAGES 37 - 39

State: Published (Approved)
Published: August 2016
Diamond Proposal Number(s): 13027 , 13323

Abstract: For the first time, infrared spectra on the sub-wavelength scale have been delivered by a synchrotron-radiation-induced thermal expansion technique. The novel experimental result was achieved by coupling an atomic force microscope (AFM) to an infrared (IR) beamline at the UK's national synchrotron facility, Diamond Light Source. Via broadband synchrotron illumination and an AFM sub-micron tip, molecular IR spectra were obtained by detecting a resonance-enhanced (RE) photothermal signal with spatial resolution beyond the diffraction limit. Together with results on synchrotron IR nanoscopy in scattering mode from the IR beamline at the Advanced Light Source two years ago, the Diamond photothermal nanoprobe approach moves vibrational analysis beyond the diffraction limit and into nanoscale absorption spectroscopy.

Subject Areas: Technique Development, Physics


Instruments: B22-Multimode InfraRed imaging And Microspectroscopy