Last update on June 17, 1996
Atoms and molecules on solid surface (100-300 K) are observed by means of
scanning tunneling microscopy (STM). Current research interests are focused
(1) Reconstruction and its dynamical processes on solid surfaces induced by adsorption and reaction of atoms and molecules.
(2) Microscopic states of adsorbed molecules
(3) Identification / discrimination of adsorbed molecules such as DNA base molecules
(4) Dynamical processes of surface migration and superstructure formation of adsorbed molecules
1. "Elucidation of hydrogen-induced (1x2) reconstructed structures on Pd(110) from 100 K to 300 K by STM", J. Yoshinobu, Tanaka and M. Kawai, Phys. Rev. B 51 (1995) 4529-4532.
2."Oxygen-induced reconstruction of the Pd(110) surface: an STM study", H. Tanaka, J. Yoshinobu and M. Kawai, Surf. Sci., 235 (1995) L505- L509.
3. "Imaging of the Nucleic Acid Base Molecules on Pd(110) Surface by Scannning Tunneling Microscopy",H. Tanaka, J. Yoshinobu, M. Kawai and T. Kawai, Jpn. J. Appl. Phys., 35 (1996) L244-L246.
4. "Adsorption, migration and superstructure-formation of benzene on Pd(110)", J. Yoshinobu, H. Tanaka, T. Kawai and M. Kawai, Phys. Rev. B., 53 7492-7495 (1996).
Infrared reflection absorption spectroscopy (IRAS), low-energy electron
diffraction (LEED), thermal desorption spectroscopy (TDS) etc. are applied to
study adsorbed molecules on well-defined solid surfaces. Our research interests
are focused on:
(1) Experimental study on potential energy surface of adsorption, migration, and desorption.
(2) Metastable/non-equilibrium adsorbed states at low temperature.
(3) Laser induced surface photochemistry.
(4) Co-adsorption system as a model for solid/liquid interface
1. "Symmetry controlled surface photochemistry of methane on Pt(111)", J. Yoshinobu, H. Ogasawara and M. Kawai, Phys. Rev. Lett., 75 (1995) 2176-2179.
2. "Thermal excitation of oxygen species as a trigger for the CO oxidation on Pt(111)", J. Yoshinobu and M. Kawai, J. Chem. Phys. 103 (1995) 3220-3229.
3. "Stability of adsorbed states and site-conversion kinetics: CO on Ni(100)", J. Yoshinobu, N. Takagi and M. Kawai, Phys. Rev. B 49 (1994) 16670-16677.
4. "Temporal and local reduction of a potential energy well under dynamic equilibrium: CO on Ni(100)", N. Takagi, J. Yoshinobu and M. Kawai, Phys. Rev. Lett. 73 (1994) 292-295.
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