Schematic illustration of tip-enhanced sum frequency generation (TE-SFG) spectroscopy and representative spectra showing enhanced detection of weak vibrational signals by pulse-delay control. (IMAGE)

National Institutes of Natural Sciences

Schematic illustration of tip-enhanced sum frequency generation (TE-SFG) spectroscopy and representative spectra showing enhanced detection of weak vibrational signals by pulse-delay control.

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Schematic illustration of tip-enhanced sum frequency generation (TE-SFG) spectroscopy and representative spectra showing enhanced detection of weak vibrational signals by pulse-delay control.

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Atsunori Sakurai

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