KUMAGAI GROUP


Research Gallery


Single-Molecule Tip-Enhanced Raman Spectroscopy of Fullerene
Recorded on a single-crystal silicon surface.


Nano-Infrared Spectroscopy of Single Protein
Nano Letters 24, 836 (2024)

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Joule Heating of Single Molecule
Vibrational excitation within a single molecule junction is studied by tip-enhanced Raman spectroscopy.
ACS Nano 16, 16443 (2022)
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Nanoscale Coherent Phonon Spectroscopy
Ultrafast nanoscale spectroscopy is achieved by combining scanning tunneling microscopy and ultrashort pulsed laser.
Science Advances 8, eabq (2022)
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Tip-Enhanced Resonance Raman Spectroscopy of Ultrahin Zinc Oxide
Nano Letters 19, 5725 (2019)

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Plasmonic Fabry-Perot Tip
Localized surface plasmon resonance in STM junction is controlled by nanofabrication of tip.
Nano Letters 19, 3579 (2019)
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Visualization of Quantum Dynamics of Hydrogen
Double-hydrogen atom transfer within porphycene molecules is observed directly using scanning tunneling microscopy.
J. Am. Chem. Soc. 139, 2526 (2017)
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Ultrathin Zinc Oxide Film
Scanning tunneling microscope image of a few atomic layers of zinc oxide film epitaxially grown on the Ag(111) surface.
J. Phys. Chem. C 118, 27428 (2014)
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Atomic-Resolution Image of Ultrathin Zinc Oxide Film
Atomic force microscopy image of a few atomic layers of zinc oxide film epitaxially grown on the Ag(111) surface.
J. Phys. Chem C 118, 27428 (2014)
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Hydrogen-Bond Exchange in Water Dimer
Donor-Acceptor interchange of water dimer is visualized using scanning tunneling microscopy. The interchange process is governed by quantum tunneling.
Phys. Rev. Lett. 100, 166101 (2008)
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Force Induced Single Molecule Switching
Tautomerization of single porphycene molecule is controlled by atomic force microscopy.
Nature Chemistry 8, 935 (2016)
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Hydrogen Atom Relay Reaction (Grotthuss Shuttling)
Sequential hydrogen atom transfer reaction is studied by scanning tunneling microscopy. The model system consisting of water and hydroxyl is assembled by molecular manipulation.
Nature Materials 11, 167 (2012)
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Hydrogen-Bond Exchange in Water Dimer
Donor-Acceptor interchange of water dimer is visualized using scanning tunneling microscopy. The interchange process is governed by quantum tunneling.
Phys. Rev. Lett. 100, 166101 (2008)
[Link]

Scanning Probe Microscopy
Working principle of scanning probe microscopy.