Improvement of Mechanical Properties of Electropolymerized Polyaniline. (9999)
Kitani, A., Yoshioka, K., Sasaki, K.
Flexible polyaniline films having excellent mechanical properties were prepared by suitable after-treatment of electropolymerized polyaniline. Highly elastic polyanilines (maximum elongation =...
Second-Order Optical Nonlinearity in Corona Poled Glass Films. (9999)
Okada, A., Ishii, K., Mito, K., Sasaki, K.
Several experiments were performed to elucidate the origin of the second order optical nonlinearity X(2) induced in the corona-poled Corning 7059 glass films. The values and the time decay of the...
Physico-Chemical Properties of Tertiary Type Landslide (9999)
Matsuo,S., Kamon,M., Kamimura,K., Sasaki,K.
Tertiary type landslides are widely observed over the mountain regions in Japan. In this paper, the physico-chemical properties of this kind of landslide are dealt with in the relation between the...
Chirality dependent frequency shift of radial breathing mode in metallic carbon nanotubes (2008)
Sasaki, K., Saito, R., Dresselhaus, G., Dresselhaus, M. S., Farhat, H., Kong, J.
A phonon frequency shift of the radial breathing mode for metallic single wall carbon nanotubes is predicted as a function of Fermi energy. Armchair nanotubes do not show any frequency shift while...
Pseudospin and Deformation-induced Gauge Field in Graphene (2008)
The basic properties of $\pi$-electrons near the Fermi level in graphene are reviewed from a point of view of the pseudospin and a gauge field coupling to the pseudospin. The applications of the...
Curvature induced optical phonon frequency shift in metallic carbon nanotubes (2008)
Sasaki, K., Saito, R., Dresselhaus, G., Dresselhaus, M. S., Farhat, H., Kong, J.
The quantum corrections to the frequencies of the $\Gamma$ point longitudinal optical (LO) and transverse optical (TO) phonon modes in carbon nanotubes are investigated theoretically. The frequency...
Kinebuchi, Y, Johkura, K, Sasaki, K, Imamura, T, Mimura, Y, Nishizawa, O
The original publication is available at http://link.springer-ny.com.
Photo- and Electron-Production of Mesons on Nucleons and Nuclei (2007)
Oset, E., Döring, M., Strottman, D., Jido, D., Napsuciale, M., Sasaki, K., ...
In these lectures I will show some results obtained with the chiral unitary approach applied to the photo and electroproduction of mesons. The results for photoproduction of $\eta \pi^0 p$ and $K^0...
Aharanov-Bohm effect for the edge states of zigzag carbon nanotubes (2007)
Sasaki, K., Suzuki, M., Saito, R.
Two delocalized states of metallic zigzag carbon nanotubes near the Dirac point can be localized by the Aharanov-Bohm magnetic field around 20 Tesla. The dependence of the localization on the length...
Light hadron spectrum with 2+1 flavor dynamical $O(a)$-improved Wilson quarks (2007)
Ukita, PACS-CS Collaboration:N., Aoki, S., Ishii, N., Ishizuka, N., Izubuchi, T., ...
We present preliminary results for the light harden spectrum in $N_f=2+1$ lattice QCD obtained with the nonperturbatively $O(a)$-improved Wilson quark action and the Iwasaki gauge action. Simulations...
Aoki, S., Ishii, N., Ishikawa, K. I., Ishizuka, N., Izubuchi, T., ...
We apply chiral perturbation theory to the pseudoscalar meson mass and decay constant data obtained in the PACS-CS Project toward 2+1 flavor lattice QCD simulations with the O(a)-improved Wilson...
Lattice QCD Calculation of the $\rho$ Meson Decay Width (2007)
Fukugita, M., Ishikawa, K-I., Ishizuka, N., Kanaya, K., Kuramashi, Y., ...
We present a lattice QCD calculation of the $\rho$ meson decay width via the $P$-wave scattering phase shift for the I=1 two-pion system. Our calculation uses full QCD gauge configurations for...
Electron-positron annihilation into phi f_{0}(980) and clues for a new 1^{--} resonance (2007)
Napsuciale, M., Oset, E., Sasaki, K., Vaquera-Araujo, C. A.
We study the e^{+}e^{-} to phi pi pi reaction for pions in an isoscalar s-wave which is dominated by loop mechanisms. For kaon loops we start from the conventional RCHPT, but use the unitarized...
Water-Bloom Treatment by Underwater Pulsed Streamer-like Discharges (2007)
Akiyama, Hidenori, Li, Zi, Ohno, T., Lin, X.F., Sato, H., Namihira, Takao, ...
Cyanobacteria blooms (or water blooms) at a water surface of dams or lakes are caused by eutrophia of the water, and have caused serious environmental problems all over the world. Effects of pulsed...
Mayama, T., Sasaki, K., Ishikawa, H.
This paper presents a unified constitutive model for cyclic viscoplasticity and changes occurring in subsequent viscoplastic deformation due to the evolution of dislocation structures. The model...
Mayama, T., Sasaki, K., Ishikawa, H.
This paper presents a unified constitutive model for cyclic viscoplasticity and changes occurring in subsequent viscoplastic deformation due to the evolution of dislocation structures. The model...
The Virtual Photon Structure to the Next-to-next-to-leading Order in QCD (2007)
Ueda, T., Sasaki, K., Uematsu, T.
We investigate the unpolarized virtual photon structure functions $F_2^gamma(x,Q^2,P^2)$ and $F_L^gamma(x,Q^2,P^2)$ in perturbative QCD for the kinematical region $Lambda^2 ll P^2 ll Q^2$, where...
Varshney, S. K., Tsuchida, Y., Sasaki, K., Saitoh, K., Koshiba, M.
We have experimentally measured the Raman gain efficiency (RGE) and chromatic dispersion (CD) of a hole-assisted fiber (HAF). The RGE of a HAF was characterized using standard pump on/off technique...
Varshney, S. K., Tsuchida, Y., Sasaki, K., Saitoh, K., Koshiba, M.
We have experimentally measured the Raman gain efficiency (RGE) and chromatic dispersion (CD) of a hole-assisted fiber (HAF). The RGE of a HAF was characterized using standard pump on/off technique...
Local density of states at zigzag edge of carbon nanotubes and graphene (2007)
Sasaki, K., Sato, K., Jiang, J., Saito, R., Onari, S., Tanaka, Y.
The electron-phonon matrix element for edge states of carbon nanotubes and graphene at zigzag edges is calculated for obtaining renormalized energy dispersion of the edge states. Self-energy...
Plants utilize isoprene emission as a thermotolerance mechanism (2007)
Sasaki, K., Saito, T., Lämsä, Mari, Oksman-Caldentey, Kirsi-Marja, Suzuki, M., Ohyama, K., ...
Plant & Cell Physiology Vol.48 Nr.9, 1254 - 1262
Theory of superconductivity of carbon nanotubes and graphene (2006)
Sasaki, K., Jiang, J., Saito, R., Onari, S., Tanaka, Y.
We present a new mechanism of carbon nanotube superconductivity that originates from edge states which are specific to graphene. Using on-site and boundary deformation potentials which do not cause...
Positivity constraints on photon structure functions (2006)
Sasaki, K., Soffer, J., Uematsu, T.
We investigate the positivity constraints for the structure functions of both virtual and real photon. From the Cauchy-Schwarz inequality we derive three positivity conditions for the general virtual...
$\rho$ meson decay from the lattice (2006)
Fukugita, M., Ishizuka, N., Kanaya, K., Kuramashi, Y., ...
We present preliminary results on the $\rho$ meson decay width estimated from the scattering phase shift of the I=1 two-pion system. The phase shift is calculated by the finite size formula for...
Scalar Lambda N and Lambda Lambda interaction in a chiral unitary approach (2006)
Sasaki, K., Oset, E., Vacas, M. J. Vicente
We study the central part of Lambda N and Lambda Lambda potential by considering the correlated and uncorrelated two-meson exchange besides the omega exchange contribution. The correlated two-meson...
Transition from real to virtual polarized photon structures (2006)
Ueda, T., Uematsu, T., Sasaki, K.
We investigate the transition of the polarized photon structure function $g_1^\gamma(x,Q^2,P^2)$ when the target photon shifts from on-shell ($P^2=0$) to far off-shell ($P^2\gg \Lambda^2$) region....
Ueda, T., Uematsu, T., Sasaki, K.
We present the next-to-next-to-leading order ($\alpha \alpha_s^2$) corrections to the first moment of the polarized virtual photon structure function $g_1^\gamma(x,Q^2,P^2)$ in the kinematical region...
Sasaki, K., Ueda, T., Uematsu, T.
We present the next-to-next-to-leading order ($alpha alpha_s^2$) corrections to the first moment of the polarized virtual photon structure function $g_1^gamma(x,Q^2,P^2)$ in the kinematical region...
Kruse,T., Blagoev,B., Lobner-Olesen,A., Wachi,M., Sasaki,K., Iwai,N., ...
The effect of drying temperature on chemical-substance emission rate from solid wood (2006)
Hasegawa, A., Ikeda, M., Sasaki, K., Salthammer, T., Gunschera, J.
This study aims to evaluate the effect of drying temperature on the chemical-substance emission rate from solid wood. Japanese Cedar and German Spruce were examinated with small chambers. The results...
Cold water coral mounds revealed (2006)
Williams, T., Kano, A., Ferdelman, T., Henriet, J-P., Abe, K., Andres, M., ...
Spectroscopic studies on impurity transport of core and edge plasmas in LHD (2006)
Morita, S, Goto, M, Muto, S, Katai, R, Yamazaki, H, Nozato, H, ...
Ishikawa, T., Ishizuka, N., Kanaya, K., Kuramashi, Y., ...
We describe our plan to develop a large-scale cluster system with a peak speed of 14.3Tflops for lattice QCD at the Center for Computational Sciences, University of Tsukuba, as a successor to the...
Stabilization mechanism of edge states in graphene (2005)
Sasaki, K., Murakami, S., Saito, R.
It has been known that edge states of a graphite ribbon are zero-energy, localized eigen-states. We show that next nearest-neighbor hopping process decreases the energy of the edge states at zigzag...
Controlling edge states of zigzag carbon nanotubes by the Aharonov-Bohm flux (2005)
Sasaki, K., Murakami, S., Saito, R., Kawazoe, Y.
It has been known theoretically that localized states exist around zigzag edges of a graphite ribbon and of a carbon nanotube, whose energy eigenvalues are located between conduction and valence...
J. ZHANG, M. B. VUKMIROVIC, K. SASAKI, F. URIBE, R. R. ADZIC
We describe a novel concept for a Ptmonolayer electrocatalyst and present the results of our electrochemical, X-ray absorption spectroscopy, and scanning tunneling microscopy studies. The...
Zushi, H, Nakamura, K, Hanada, K, Sato, KN, Sakamoto, M, Idei, H, ...
Sasaki, K., Izaki, M., Oka, M.
Nonmesonic weak decays of s-shell hypernuclei are analyzed in microscopic models for the Lambda N to NN weak interaction. A scalar-isoscalar meson, sigma, is introduced and its importance in...
Ion acceleration during internal magnetic reconnection events in TST-2 (2004)
Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...
Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...
Ion acceleration during internal magnetic reconnection events in TST-2 (2004)
Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...
Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...
Ion acceleration during internal magnetic reconnection events in TST-2 (2004)
Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...
Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...
Transport barrier formation by LHCD on TRIAM-1M (2004)
Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...
Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT<8T). The formation of...
Transport barrier formation by LHCD on TRIAM-1M (2004)
Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...
Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT
Transport barrier formation by LHCD on TRIAM-1M (2004)
Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...
Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT<8T). The formation of...
The basic properties of conducting electrons in carbon nanotubes are reviewed from a theoretical perspective, and studies performed on persistent currents in toroidal carbon nanotubes and on the...
Fractional Flux Periodicity in Doped Carbon Nanotubes (2004)
Sasaki, K., Murakami, S., Saito, R.
An anomalous magnetic flux periodicity of the ground state is predicted in two-dimensional cylindrical surface composed of square and honeycomb lattice. The ground state and persistent currents...
Ion acceleration during internal magnetic reconnection events in TST-2 (2004)
Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...
Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...
Transport barrier formation by LHCD on TRIAM-1M (2004)
Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...
Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT<8T). The formation of...
Ion acceleration during internal magnetic reconnection events in TST-2 (2004)
Hoshika, Hiroyuki, Zushi, H., Aramasu, M., Idei, H., Iyomasa, A., Ejiri, A., ...
Characteristics of ion acceleration in the internal magnetic reconnection events (IRE) have been studied by means of a neutral particle energy analyzer (NPA) in Tokyo Spherical Tokamak (TST-2). The...
Transport barrier formation by LHCD on TRIAM-1M (2004)
Hanada, K., Iyomasa, A., Zushi, H., Hasegawa, M., Sasaki, K., Hoshika, H., ...
Internal transport barrier (ITB) has been obtained in full lower hybrid current driven (LHCD) plasmas on a superconducting tokamak, TRIMA-1M (R=0.84m, a x b=0.12mx0.18m, BT<8T). The formation of...
Fractional flux periodicity in tori made of square lattice (2004)
Sasaki, K., Kawazoe, Y., Saito, R.
This paper describes a study on fractional flux periodicity of the ground state in planar systems made from a square lattice whose boundary is compacted into a torus. It is pointed out that, in the...
Fractional flux periodicity of a twisted planar square lattice (2004)
Sasaki, K., Kawazoe, Y., Saito, R.
We present fractional flux periodicity in the ground state of planar systems made of a square lattice whose boundary is compacted into a torus. The ground-state energy shows a fractional period of...
Local Energy Gap in Deformed Carbon Nanotubes (2004)
Sasaki, K., Kawazoe, Y., Saito, R.
The effects of graphite surface geometrical deformation on the dynamics of conducting electrons are investigated theoretically. The analysis is performed within the framework of a deformation-induced...
Takizawa, K., Sasaki, K., Kono, A.
Laser-induced fluorescence-dip (LIF-dip) spectroscopy of Ar was used for measuring the distributions of sheath electric fields in low-pressure, inductively-coupled Ar plasmas. A sensitive detection...
Aharonov-Bohm effect in higher genus materials (2003)
Sasaki, K., Kawazoe, Y., Saito, R.
Flux periodicity of conducting electrons on a closed surface with genus two $g=2$ (double torus) are investigated theoretically. We examine flux periodicity of the ground-state energy and of the wave...
Excited nucleon spectrum from lattice QCD with maximum entropy method (2003)
Sasaki, K., Sasaki, S., Hatsuda, T., Asakawa, M.
We study excited states of the nucleon in quenched lattice QCD with the spectral analysis using the maximum entropy method. Our simulations are performed on three lattice sizes $16^3\times 32$,...
We measured the distribution of absolute H atom density in high-density, low-pressure CF_4 plasmas with the addition of H2 by (2+1)-photon laser-induced fluorescence spectroscopy. The H atom density...
Characteristic Behavior of Toroidal Carbon Nanotubes: Kinematics of Persistent Currents (2003)
The electrical properties of a carbon nanotube depend strongly on its lattice structure as defined by chiral and translational vectors. A toroidal shape for a nanotube allows various twisted...
The $\Lambda \Lambda \to YN$ Weak Transition in Double-$\Lambda$ Hypernuclei (2003)
Sasaki, K., Inoue, T., Oka, M.
We calculate the $\Lambda \Lambda \to YN$ transition rate of ${^{\phantom{\Lambda}6}_{\Lambda \Lambda}}$He by the hybrid picture, the $\pi$ and $K$ exchanges plus the direct quark processes. It is...
The 30th International Conference on Plasma Science, IEEE Conference Record - Abstracts., 2-5 June 2003, p.122
The 30th International Conference on Plasma Science, IEEE Conference Record - Abstracts.，2-5 June 2003, p.367