Nanoscale Surface Chemistry
Nanoscale Surface Chemistry
Research Group Takashi Kumagai
Research Group Takashi Kumagai

Publications

Journal articles
2021
Shuyi Liu, Adnan Hammud, Martin Wolf, Takashi Kumagai
Atomic Point Contact Raman Spectroscopy of a Si(111)-7 × 7 Surface
2020
Takashi Kumagai
Sub-molecular photoluminescence
S. Liu, B. Cirera, M. Müller, Y. Sun, I. Hamada, A. Hammud, M. Wolf, and T. Kumagai
Dramatic Enhancement of Tip-Enhanced Raman Scattering Mediated by Atomic Point Contact Formation
2019
C. Lin, K. Ikeda, Y. Shiota, K. Yoshizawa, and T. Kumagai
Real-space observation of far- and near-field-induced photolysis of molecular oxygen on an Ag(110) surface by visible light
S. Liu, M. Müller, Y. Sun, I. Hamada, A. Hammud, M. Wolf, and T. Kumagai
Resolving the Correlation between Tip-Enhanced Resonance Raman Scattering and Local Electronic States with 1 nm Resolution
H. Böckmann, S. Liu, M. Müller, A. Hammud, M. Wolf, and T. Kumagai
Near-Field Manipulation in a Scanning Tunneling Microscope Junction with Plasmonic Fabry-Pérot Tips
H. Böckmann, M. Müller, A. Hammud, M.-G. Willinger, M. Pszona, J. Waluk, M. Wolf, and T. Kumagai
Near-Field Spectral Response of Optically Excited Scanning Tunneling Microscope Junctions Probed by Single-Molecule Action Spectroscopy
C. Lin, E. Durant, M. Persson, M. Rossi, and T. Kumagai
Real-Space Observation of Quantum Tunneling by Carbon Atom: Flipping Reaction of Formaldehyde on Cu(110)
Y. Litman, J.O. Richardson, T. Kumagai, M. Rossi
Elucidating the Quantum Dynamics of Intramolecular Double Hydrogen Transfer in Porphycene
2018
S. Liu, M. Wolf, T. Kumagai
Plasmon-Assisted Resonant Electron Tunneling in a Scanning Tunneling Microscope Junction
T. Kumagai, J.N. Ladenthin, and I. Hamada
Direct observation of van der Waals two-dimensional crystal and small clusters of methane on copper surfaces
M. Koch, Z. Li, C. Nacci, T. Kumagai, I. Franco, L. Grill
How Structural Defects Affect the Mechanical and Electrical Properties of Single Molecular Wires
S. Liu, A. Shiotari, D. Baugh, M. Wolf, T. Kumagai
Enhanced resolution imaging of ultrathin ZnO layers on Ag(111) by multiple hydrogen molecules in a scanning tunneling microscope junction
S. Liu, D. Baugh, K. Motobayashi, X. Zhao, S. V. Levchenko, S. Gawinkowski, J. Waluk, L. Grill, M. Persson and T. Kumagai
Anharmonicity in a double hydrogen transfer reaction studied in a single porphycene molecule on a Cu(110) surface
2017
T. Kumagai, J.N. Ladenthin, Y. Litman, M. Rossi, L. Grill, S. Gawinkowski, J, Waluk, and M. Persson
Quantum tunneling in real space: Tautomerization of single porphycene molecules on the (111) surface of Cu, Ag, and Au
H. Böckmann, S. Gawinkowski, J. Waluk, M.B. Raschke, M. Wolf, and T. Kumagai
Near-Field Enhanced Photochemistry of Single Molecules in a Scanning Tunneling Microscope Junction
M. Koch, M. Pagan, M. Persson, S. Gawinkowski, J. Waluk, and T. Kumagai
Direct Observation of Double Hydrogen Transfer via Quantum Tunneling in a Single Porphycene Molecule on a Ag(110) Surface
P. Fita, L. Grill, A. Listkowski, H. Piwoński, S. Gawinkowski, M. Pszona, J. Sepioł, E. Mengesha, T. Kumagai and J. Waluk
Spectroscopic and microscopic investigations of tautomerization in porphycenes: condensed phases, supersonic jets, and single molecule studies
2016
A. Saywell, A. Bakker, J. Mielke, T. Kumagai, M. Wolf, V. García-López, P.-T. Chiang, J. M. Tour, & L. Grill
Light-Induced Translation of Motorized Molecules on a Surface
T. Kumagai, S. Liu, A. Shiotari, D. Baugh, S. Shaikhutdinov, & M. Wolf
Local electronic structure, work function, and line defect dynamics of ultrathin epitaxial ZnO layers on a Ag(111) surface (Invited, Special Issue “Emerging Leaders”)
J. N. Ladenthin, T. Frederiksen, M. Persson, J. C. Sharp, S. Gawinkowski, J. Waluk, & T. Kumagai
Force-induced tautomerization in a single molecule
H. Böckmann, S. Liu, J. Mielke, S. Gawinkowski, J. Waluk, L. Grill, M. Wolf, & T. Kumagai
Direct Observation of Photoinduced Tautomerization in Single Molecules at a Metal Surface
2015
J. N. Ladenthin, L. Grill, S. Gawinkowski, Sh. Liu, J. Waluk, & T. Kumagai
Hot Carrier-Induced Tautomerization within a Single Porphycene Molecule on Cu(111)
2014
A. Shiotari, B.-H. Liu, S. Jaekel, L. Grill, S. Shaikhutdinov, H.-J. Freund, M. Wolf, & T. Kumagai
Local Characterization of Ultrathin ZnO Layers on Ag(111) by Scanning Tunneling Microscopy and Atomic Force Microscopy
J. Čechal, C. Kley, T. Kumagai, F. Schramm, M. Ruben, S. Stepanow, K. Kern
Convergent and divergent two-dimensional coordination networks formed through substrate-activated or quenched alkynyl ligation
A. Shiotari, T. Kumagai, M. Wolf
Tip-Enhanced Raman Spectroscopy of Graphene Nanoribbons on Au(111)
2013
T. Kumagai, F. Hanke, S. Gawinkowski, J. Sharp, K. Kotsis, J. Waluk, M. Persson, and L. Grill
Thermally and vibrationally induced tautomerization of single porphycene molecules on a Cu(110) surface
T. Kumagai, F. Hanke, S. Gawinkowski, J. Sharp, K. Kotsis, J. Waluk, M. Persson, & L.Grill
Controlling intramolecular hydrogen transfer in a porphycene molecule with single atoms or molecules located nearby
J. Čechal, C. Kley, T. Kumagai, F. Schramm, M. Ruben, S. Stepanow, K. Kern
Functionalization of Open Two-Dimensional Metal-Organic Templates through the Selective Incorporation of Metal Atoms
2012
I. Hamada, T. Kumagai, A. Shiotari, H. Okuyama, S. Hatta, T. Aruga
Nature of hydrogen bonding in hydroxyl groups on a metal surface
H. Okuyama, A. Shiotari, T. Kumagai, S. Hatta, T. Aruga, M. Paulsson, Y. Ootsuka, H. Ueba
Modifying current-voltage characteristics of a single molecule junction by isotope substitution: OHOD dimer on Cu(110)
C.S. Kley, J. Čechal, T. Kumagai, F. Schramm, M. Ruben, S. Stepanow, and K. Kern
Highly adaptable two-dimensional metal-organic coordination networks on metal surfaces
2011
T. Kumagai, A. Shiotari, H. Okuyama, S. Hatta, T. Aruga, I. Hamada, T. Frederiksen, H. Ueba
Hydrogen relay reactions in real space
T. Kumagai, H. Okuyama, S. Hatta, T. Aruga, I. Hamada
Water clusters on Cu(110): chain versus cyclic structures
2010
T. Kumagai, M. Kaizu, H. Okuyama, S. Hatta, T. Aruga, I. Hamada, Y. Morikawa
Symmetric hydrogen bond in a water-hydroxyl complex on Cu(110)
2009
T. Kumagai, M. Kaizu, H. Okuyama, S. Hatta, T. Aruga, I. Hamada, Y. Morikawa
Tunneling dynamics of a hydroxyl group adsorbed on Cu(110)
2008
T. Kumagai, M. Kaizu, H. Okuyama, S. Hatta, T. Aruga, I. Hamada, Y. Morikawa
Water Monomer and Dimer on Cu(110) Studied Using a Scanning Tunneling Microscope
T. Kumagai, M. Kaizu, S. Hatta, H. Okuyama, T, Aruga. I. Hamada, Y. Morikawa
Direct Observation of Hydrogen-Bond Exchange within a Single Water Dimer
2007
T. Kumagai, S. Hatta, H. Okuyama, T. Aruga
Adsorbed state and scanning tunneling microscopy induced migration of acetylene on Cu(110)

Books & Reviews
T. Kumagai and H. Okuyama
Direct Observation of Hydrogen-Atom Relay Reactions Using Low-temperature Scanning Tunneling Microscopy
T. Kumagai and H. Okuyama
Direct Observation of Hydrogen-Bond Exchange Reaction in a Water Dimer Using Low-Temperature Scanning Tunneling Microscopy
T. Kumagai and L. Grill
Direct Observation and Control of Single-Molecule Tautomerization by Low-Temperature Scanning Tunneling Microscopy
T. Kumagai
Direct observation and control of hydrogen-bond dynamics using low-temperature scanning tunneling microscopy
T. Kumagai
Visualization of hydrogen-bond dynamics – Water-based model systems on a Cu(110) surface