誠一郎 中林 - Academia.edu (original) (raw)
Papers by 誠一郎 中林
![Research paper thumbnail of Electron transfer kinetics of methylviologen included in 4-sulfonatocalix[n]arenes at glassy carbon electrode; adiabaticity and activation energy](https://attachments.academia-assets.com/113739506/thumbnails/1.jpg)
](Chemical Physics Letters, 2018
Electron transfer kinetics of methylviologen included in 4-sulfonatocalix[n]arenes at glassy carb... more Electron transfer kinetics of methylviologen included in 4-sulfonatocalix[n]arenes at glassy carbon electrode; adiabaticity and activation energy
Crystal Growth & Design, 2018
Seibutsu Butsuri, 2006
Normal epitheliul cells require contact with extracetlular matrix (ECM} to survive, Disruptien of... more Normal epitheliul cells require contact with extracetlular matrix (ECM} to survive, Disruptien of ECM attachment leads to a specific type of apoptosis known as aneikis in most non-rransfornied cell types. Anoikis plays a physk]1[,giea] role by regu}ating cell hoitieostasis in tissue. Although the niolecular mechanism ef anoikis is not fulty understood. accumulating evidences sug.gest
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1982
Extremely exothermic electron transfer reactions are known to be attractive Tom the viewpoint of ... more Extremely exothermic electron transfer reactions are known to be attractive Tom the viewpoint of their abnormal kinetics [ 11. Classical treatments such as the Marcus and Gerischer theories [2-4] predict an exponential decrease of
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1991
The back electron transfer of the dye sensitized photoelectrode reaction has been studied for the... more The back electron transfer of the dye sensitized photoelectrode reaction has been studied for the Rhodamin B/SnOZ polycrystal system. The mechanism proposed is an electron tunneling assisted by the surface states on ihe electrode, which was manifested by the electrode potential dependence of the electro-reflectance spectra.
The Journal of Physical Chemistry, 1992
... Campbell, C . T.; Erth, G.; Segner, J. Surf. Sci. 1982,115, 309. Fulmer, J. P.; Tysoe, WT Lon... more ... Campbell, C . T.; Erth, G.; Segner, J. Surf. Sci. 1982,115, 309. Fulmer, J. P.; Tysoe, WT Longmuir 1990,6, 1229. Smith, GW; Carter, EA J. Phys. Chem. 1991, 95. 2327. ... Chem. SOC. 1975.97. 1407. (21) Kasai, P. H.; Bishop, RJ, Jr.; Mcleod, D., Jr. J. Phys. Chem: 1978, 82, 279. ...
Physical Review E, 1999
Hydrodynamic instability analogous to Rayleigh-Bénard convection is observed in an electrolytic s... more Hydrodynamic instability analogous to Rayleigh-Bénard convection is observed in an electrolytic solution between two parallel copper wire electrodes. The laser interferometric technique can reveal the dissipation structure created by the motion of the fluid, which is controlled electrochemically. It is shown that under the presence of horizontal magnetic field the roll cells move horizontally along the electrodes. The electrochemically driven convection is simply controlled and monitored by setting and measuring the electrochemical parameters and forms many kinds of spatiotemporal patterns, especially under the magnetic field. The phenomenon is modeled by considering a Boussinesq fluid under a concentration gradient. The stability of the resulting equations is studied by linear stability analysis. The time dependent nonlinear system is investigated numerically and the main features of the experimental response are reproduced.
The Journal of Physical Chemistry B, 1998
The electrodeposition of Te on a single-crystalline Au(111) electrode was studied with 1064-nm-ex... more The electrodeposition of Te on a single-crystalline Au(111) electrode was studied with 1064-nm-excited SH rotational anisotropy measurements. The SH rotational anisotropy was significantly changed with the first underpotential deposition (upd) of Te, and the bulk Te deposition attenuated the anisotropic character of the overall surface symmetry. The change in the SH rotational anisotropy during the first upd of Te was examined using two different models. The first model considered only the contribution of the Au(111) surface to the SHG response, while the second one took into account the contributions of both the Au(111) substrate and the adsorbed Te layer. In the former case, the change in the SH rotational anisotropy can be explained by considering the quenching of the nonlinear susceptibility of the Au(111) surface. The analysis based on the latter model resulted in a rotation angle of 608 for the adsorbed Te layer against the the Au(111) lattice. This value was not consistent with that expected from the adsorbate structure of the first upd layer of Te, i.e., (3× 3)R30°. Thus, the former model seems to be more appropriate to explain the present results. The SH rotational anisotropy measurement also suggests that the morphology became more isotropic after the bulk Te deposition.
The Journal of Physical Chemistry B, 2003
ABSTRACT A network of two coupled electrochemical oscillators is investigated theoretically and e... more ABSTRACT A network of two coupled electrochemical oscillators is investigated theoretically and experimentally. It is shown that, if the network is controlled potentiostatically with a point reference electrode, the evolution of the system depends both on the uncompensated and solution resistances. As a result, the action of the connections between the two oscillators can be tuned to be either excitatory or inhibitory by changing the relative position of the working, counter, and point reference electrodes. The change of the connection's action induces different in-phase or out-of-phase stable synchronized states. The numerical predictions are qualitatively reproduced experimentally.
The Journal of Physical Chemistry B, 2012
We investigated a potential application of hydrophobic poly(n-butyl acrylate) networks (cPnBA) as... more We investigated a potential application of hydrophobic poly(n-butyl acrylate) networks (cPnBA) as substrates with tunable elasticity for culturing, maintenance, and regulation of human osteosarcoma cells (U2OS). Nanoindentation experiments with an atomic force microscope revealed that the mechanical properties of cPnBA films are maintained under aqueous conditions, confirming that the substrate elasticity can be controlled simply by the degree of cross-linking, independent from the culture medium. We found that the adhesion U2OS cells to cPnBA substrates could be improved by surface treatments such as oxgen plasma and serum proteins. To determine the strength of cell adhesion, the critical pressure to detach cells from cPnBA substrates was measured using a shock wave induced by an intensive picosecond laser pulse. A monotonic increase in the cell adhesion strength in accordance with the substrate elasticity demonstrated the potential of intrinsically hydrophobic cPnBA as a new class of substrate material with tunable mechanical properties that are not influenced by the culture medium.
Surface Science, 1996
In this paper we examine the surface chemistry of O2/Pd(111) under conditions of dense electronic... more In this paper we examine the surface chemistry of O2/Pd(111) under conditions of dense electronic excitation generated by femtosecond laser pulses. In contrast to the cases of conventional photo-activation and thermal activation, with femtosecond excitation the branching ratio for desorption/dissociation is found to favor desorption strongly. The results are discussed in terms of a recently developed model for desorption induced by multiple electronic transitions (DIMET).
Stem Cells, 2014
In healthy joints, hyaline cartilage covering the joint surfaces of bones provides cushioning due... more In healthy joints, hyaline cartilage covering the joint surfaces of bones provides cushioning due to its unique mechanical properties. However, because of its limited regenerative capacity, age- and sports-related injuries to this tissue may lead to degenerative arthropathies, prompting researchers to investigate a variety of cell sources. We recently succeeded in isolating human cartilage progenitor cells from ear elastic cartilage. Human cartilage progenitor cells have high chondrogenic and proliferative potential to form elastic cartilage with long-term tissue maintenance. However, it is unknown whether ear-derived cartilage progenitor cells can be used to reconstruct hyaline cartilage, which has different mechanical and histological properties from elastic cartilage. In our efforts to develop foundational technologies for joint hyaline cartilage repair and reconstruction, we conducted this study to obtain an answer to this question. We created an experimental canine model of kne...
Journal of the Optical Society of America B, 2002
The nonlinear optical properties of one-dimensional all-solid-state photonic-crystal microcavitie... more The nonlinear optical properties of one-dimensional all-solid-state photonic-crystal microcavities (MCs) are experimentally studied by second-harmonic generation (SHG) spectroscopy in both the frequency and the wavevector domains. The studied single and coupled MCs are formed by the alternating of mesoporous silicon layers of different porosities. When the fundamental radiation is in resonance with the MC mode the secondharmonic intensity is enhanced by a factor of approximately 10 2. The resonant SHG response is compared with the off-resonance response, as the fundamental wavelength is outside the photonic bandgap. The splitting of the modes of two identical coupled MCs is observed in the wave-vector domain spectrum of enhanced SHG. The SHG enhancement is attributed to the combined effects of the spatial localization of the fundamental field in the MC spacer and the fulfillment of the phase-matching conditions. The confinement of the resonant fundamental field is probed directly at the MC cleavage by a scanning near-field optical microscope. The role of the phase matching that is associated with the giant effective dispersion in the spectral vicinity of the MC mode is deduced from a comparison with the SHG peaks at both edges of the photonic bandgap.
Journal of the Physical Society of Japan, 1991
Neutron emissions from electrolysis of D2O with palladium and palladium-titanium electrodes as we... more Neutron emissions from electrolysis of D2O with palladium and palladium-titanium electrodes as well as from pressurized D2 gas with titanium alloys have been measured. The neutron detector system was so designed to have very low background condition. Neutron-gamma separation technique using liquid scintillator was applied to obtain essentially no gamma ray background condition for neutron counting. Special care was taken
Journal of The Electrochemical Society, 1996
The constant potential oxidation of iron in aqueous sulfuric acid solution induces a self-sustain... more The constant potential oxidation of iron in aqueous sulfuric acid solution induces a self-sustained nonlinear oscillation of the current. Here, two independently controlled iron electrodes become synchronized to each other as the distance between the electrodes is reduced. The temporal pattern of the synchronization is a function of the potential difference between the electrodes. The oscillation frequency of the iron electrode can be changed by irradiation with visible light.
IEEE Transactions on Appiled Superconductivity, 2002
ABSTRACT
Electrochemistry Communications, 2002
UV irradiation (266 nm) from a nano-second pulsed laser induced a transient photo-current on Pt(1... more UV irradiation (266 nm) from a nano-second pulsed laser induced a transient photo-current on Pt(1 1 1) electrode when it is contacted to an aqueous solution containing lactic acid. The potential dependence of this photo-current and the potentiodynamic behavior in the dark suggested that this electrocatalytic oxidation proceeds under the dual-path mechanism. This photo-response also revealed a potential dependence of the coverage of a short-lived adsorption intermediate.
Electrochemistry Communications, 2003
A fairly low magnetic field of ca. 30 mT was found to affect the period and the amplitude of the ... more A fairly low magnetic field of ca. 30 mT was found to affect the period and the amplitude of the self-sustained current oscillation of an iron electrode. This was observed much distinctively when the direction of the applied field was normal to the electrode surface, i.e., non-magnetohydrodynamic (MHD) configuration. The Flade potential of the iron electrode was not affected by the magnetic field intensity of up to 4 T. The observed magnetic field effect was attributed to the depression of the natural convection in the vicinity of the electrode surface which was caused by the two local paramagnetic body forces, the magnetic field gradient force and/or the concentration gradient force.
Chemical Physics Letters, 2018
Electron transfer kinetics of methylviologen included in 4-sulfonatocalix[n]arenes at glassy carb... more Electron transfer kinetics of methylviologen included in 4-sulfonatocalix[n]arenes at glassy carbon electrode; adiabaticity and activation energy
Crystal Growth & Design, 2018
Seibutsu Butsuri, 2006
Normal epitheliul cells require contact with extracetlular matrix (ECM} to survive, Disruptien of... more Normal epitheliul cells require contact with extracetlular matrix (ECM} to survive, Disruptien of ECM attachment leads to a specific type of apoptosis known as aneikis in most non-rransfornied cell types. Anoikis plays a physk]1[,giea] role by regu}ating cell hoitieostasis in tissue. Although the niolecular mechanism ef anoikis is not fulty understood. accumulating evidences sug.gest
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1982
Extremely exothermic electron transfer reactions are known to be attractive Tom the viewpoint of ... more Extremely exothermic electron transfer reactions are known to be attractive Tom the viewpoint of their abnormal kinetics [ 11. Classical treatments such as the Marcus and Gerischer theories [2-4] predict an exponential decrease of
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1991
The back electron transfer of the dye sensitized photoelectrode reaction has been studied for the... more The back electron transfer of the dye sensitized photoelectrode reaction has been studied for the Rhodamin B/SnOZ polycrystal system. The mechanism proposed is an electron tunneling assisted by the surface states on ihe electrode, which was manifested by the electrode potential dependence of the electro-reflectance spectra.
The Journal of Physical Chemistry, 1992
... Campbell, C . T.; Erth, G.; Segner, J. Surf. Sci. 1982,115, 309. Fulmer, J. P.; Tysoe, WT Lon... more ... Campbell, C . T.; Erth, G.; Segner, J. Surf. Sci. 1982,115, 309. Fulmer, J. P.; Tysoe, WT Longmuir 1990,6, 1229. Smith, GW; Carter, EA J. Phys. Chem. 1991, 95. 2327. ... Chem. SOC. 1975.97. 1407. (21) Kasai, P. H.; Bishop, RJ, Jr.; Mcleod, D., Jr. J. Phys. Chem: 1978, 82, 279. ...
Physical Review E, 1999
Hydrodynamic instability analogous to Rayleigh-Bénard convection is observed in an electrolytic s... more Hydrodynamic instability analogous to Rayleigh-Bénard convection is observed in an electrolytic solution between two parallel copper wire electrodes. The laser interferometric technique can reveal the dissipation structure created by the motion of the fluid, which is controlled electrochemically. It is shown that under the presence of horizontal magnetic field the roll cells move horizontally along the electrodes. The electrochemically driven convection is simply controlled and monitored by setting and measuring the electrochemical parameters and forms many kinds of spatiotemporal patterns, especially under the magnetic field. The phenomenon is modeled by considering a Boussinesq fluid under a concentration gradient. The stability of the resulting equations is studied by linear stability analysis. The time dependent nonlinear system is investigated numerically and the main features of the experimental response are reproduced.
The Journal of Physical Chemistry B, 1998
The electrodeposition of Te on a single-crystalline Au(111) electrode was studied with 1064-nm-ex... more The electrodeposition of Te on a single-crystalline Au(111) electrode was studied with 1064-nm-excited SH rotational anisotropy measurements. The SH rotational anisotropy was significantly changed with the first underpotential deposition (upd) of Te, and the bulk Te deposition attenuated the anisotropic character of the overall surface symmetry. The change in the SH rotational anisotropy during the first upd of Te was examined using two different models. The first model considered only the contribution of the Au(111) surface to the SHG response, while the second one took into account the contributions of both the Au(111) substrate and the adsorbed Te layer. In the former case, the change in the SH rotational anisotropy can be explained by considering the quenching of the nonlinear susceptibility of the Au(111) surface. The analysis based on the latter model resulted in a rotation angle of 608 for the adsorbed Te layer against the the Au(111) lattice. This value was not consistent with that expected from the adsorbate structure of the first upd layer of Te, i.e., (3× 3)R30°. Thus, the former model seems to be more appropriate to explain the present results. The SH rotational anisotropy measurement also suggests that the morphology became more isotropic after the bulk Te deposition.
The Journal of Physical Chemistry B, 2003
ABSTRACT A network of two coupled electrochemical oscillators is investigated theoretically and e... more ABSTRACT A network of two coupled electrochemical oscillators is investigated theoretically and experimentally. It is shown that, if the network is controlled potentiostatically with a point reference electrode, the evolution of the system depends both on the uncompensated and solution resistances. As a result, the action of the connections between the two oscillators can be tuned to be either excitatory or inhibitory by changing the relative position of the working, counter, and point reference electrodes. The change of the connection's action induces different in-phase or out-of-phase stable synchronized states. The numerical predictions are qualitatively reproduced experimentally.
The Journal of Physical Chemistry B, 2012
We investigated a potential application of hydrophobic poly(n-butyl acrylate) networks (cPnBA) as... more We investigated a potential application of hydrophobic poly(n-butyl acrylate) networks (cPnBA) as substrates with tunable elasticity for culturing, maintenance, and regulation of human osteosarcoma cells (U2OS). Nanoindentation experiments with an atomic force microscope revealed that the mechanical properties of cPnBA films are maintained under aqueous conditions, confirming that the substrate elasticity can be controlled simply by the degree of cross-linking, independent from the culture medium. We found that the adhesion U2OS cells to cPnBA substrates could be improved by surface treatments such as oxgen plasma and serum proteins. To determine the strength of cell adhesion, the critical pressure to detach cells from cPnBA substrates was measured using a shock wave induced by an intensive picosecond laser pulse. A monotonic increase in the cell adhesion strength in accordance with the substrate elasticity demonstrated the potential of intrinsically hydrophobic cPnBA as a new class of substrate material with tunable mechanical properties that are not influenced by the culture medium.
Surface Science, 1996
In this paper we examine the surface chemistry of O2/Pd(111) under conditions of dense electronic... more In this paper we examine the surface chemistry of O2/Pd(111) under conditions of dense electronic excitation generated by femtosecond laser pulses. In contrast to the cases of conventional photo-activation and thermal activation, with femtosecond excitation the branching ratio for desorption/dissociation is found to favor desorption strongly. The results are discussed in terms of a recently developed model for desorption induced by multiple electronic transitions (DIMET).
Stem Cells, 2014
In healthy joints, hyaline cartilage covering the joint surfaces of bones provides cushioning due... more In healthy joints, hyaline cartilage covering the joint surfaces of bones provides cushioning due to its unique mechanical properties. However, because of its limited regenerative capacity, age- and sports-related injuries to this tissue may lead to degenerative arthropathies, prompting researchers to investigate a variety of cell sources. We recently succeeded in isolating human cartilage progenitor cells from ear elastic cartilage. Human cartilage progenitor cells have high chondrogenic and proliferative potential to form elastic cartilage with long-term tissue maintenance. However, it is unknown whether ear-derived cartilage progenitor cells can be used to reconstruct hyaline cartilage, which has different mechanical and histological properties from elastic cartilage. In our efforts to develop foundational technologies for joint hyaline cartilage repair and reconstruction, we conducted this study to obtain an answer to this question. We created an experimental canine model of kne...
Journal of the Optical Society of America B, 2002
The nonlinear optical properties of one-dimensional all-solid-state photonic-crystal microcavitie... more The nonlinear optical properties of one-dimensional all-solid-state photonic-crystal microcavities (MCs) are experimentally studied by second-harmonic generation (SHG) spectroscopy in both the frequency and the wavevector domains. The studied single and coupled MCs are formed by the alternating of mesoporous silicon layers of different porosities. When the fundamental radiation is in resonance with the MC mode the secondharmonic intensity is enhanced by a factor of approximately 10 2. The resonant SHG response is compared with the off-resonance response, as the fundamental wavelength is outside the photonic bandgap. The splitting of the modes of two identical coupled MCs is observed in the wave-vector domain spectrum of enhanced SHG. The SHG enhancement is attributed to the combined effects of the spatial localization of the fundamental field in the MC spacer and the fulfillment of the phase-matching conditions. The confinement of the resonant fundamental field is probed directly at the MC cleavage by a scanning near-field optical microscope. The role of the phase matching that is associated with the giant effective dispersion in the spectral vicinity of the MC mode is deduced from a comparison with the SHG peaks at both edges of the photonic bandgap.
Journal of the Physical Society of Japan, 1991
Neutron emissions from electrolysis of D2O with palladium and palladium-titanium electrodes as we... more Neutron emissions from electrolysis of D2O with palladium and palladium-titanium electrodes as well as from pressurized D2 gas with titanium alloys have been measured. The neutron detector system was so designed to have very low background condition. Neutron-gamma separation technique using liquid scintillator was applied to obtain essentially no gamma ray background condition for neutron counting. Special care was taken
Journal of The Electrochemical Society, 1996
The constant potential oxidation of iron in aqueous sulfuric acid solution induces a self-sustain... more The constant potential oxidation of iron in aqueous sulfuric acid solution induces a self-sustained nonlinear oscillation of the current. Here, two independently controlled iron electrodes become synchronized to each other as the distance between the electrodes is reduced. The temporal pattern of the synchronization is a function of the potential difference between the electrodes. The oscillation frequency of the iron electrode can be changed by irradiation with visible light.
IEEE Transactions on Appiled Superconductivity, 2002
ABSTRACT
Electrochemistry Communications, 2002
UV irradiation (266 nm) from a nano-second pulsed laser induced a transient photo-current on Pt(1... more UV irradiation (266 nm) from a nano-second pulsed laser induced a transient photo-current on Pt(1 1 1) electrode when it is contacted to an aqueous solution containing lactic acid. The potential dependence of this photo-current and the potentiodynamic behavior in the dark suggested that this electrocatalytic oxidation proceeds under the dual-path mechanism. This photo-response also revealed a potential dependence of the coverage of a short-lived adsorption intermediate.
Electrochemistry Communications, 2003
A fairly low magnetic field of ca. 30 mT was found to affect the period and the amplitude of the ... more A fairly low magnetic field of ca. 30 mT was found to affect the period and the amplitude of the self-sustained current oscillation of an iron electrode. This was observed much distinctively when the direction of the applied field was normal to the electrode surface, i.e., non-magnetohydrodynamic (MHD) configuration. The Flade potential of the iron electrode was not affected by the magnetic field intensity of up to 4 T. The observed magnetic field effect was attributed to the depression of the natural convection in the vicinity of the electrode surface which was caused by the two local paramagnetic body forces, the magnetic field gradient force and/or the concentration gradient force.