Kenji Yasuoka

Coexistence and transition between Cassie and Wenzel state on pillared hydrophobic surface (2009)

Koishi, Takahiro, Yasuoka, Kenji, Fujikawa, Shigenori, Ebisuzaki, Toshikazu, Zeng, Xiao Cheng

Water droplets on rugged hydrophobic surfaces typically exhibit one of the following two states: (i) the Wenzel state [Wenzel RN (1936) Ind Eng Chem 28:988-994] in which water droplets are in full...

Formation of Nuclear "Pasta" in Supernovae (2009)

Watanabe, Gentaro, Sonoda, Hidetaka, Maruyama, Toshiki, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

In supernova cores, nuclear "pasta" phases such as triangular lattice of rod-like nuclei and layered structure of slab-like nuclei are considered to exist. However, it is still unclear whether or not...

Genome Informatics 14: 625--626 (2003) 625 Parallelized Simulation of Molecular Dynamics with a (2008)

Naoki Takada, Noriyuki Futatsugi, Atsushi Suenaga, Tetsu Narumi, Noriaki Okimoto, ...

Introduction Molecular dynamics (MD) simulation is a very useful technique for studying the structure and dynamics of biologically important molecules such as proteins and DNA/RNA. In MD simulations,...

Phase diagram of nuclear ``pasta' and its uncertainties in supernova cores (2007)

Sonoda, Hidetaka, Watanabe, Gentaro, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

We examine the model dependence of the phase diagram of inhomogeneous nulcear matter in supernova cores using the quantum molecular dynamics (QMD). Inhomogeneous matter includes crystallized matter...

Molecular dynamics of homogeneous nucleation in the vapor phase of Lennard-Jones. III. Effect of carrier gas pressure (2007)

Yasuoka, Kenji, Zeng, Xiao Cheng

A molecular dynamics simulation of vapor phase nucleation has been performed with 40 000 Lennard-Jones particles for the target gas and 0-160 000 particles for the carrier gas. Three carrier gas...

Impact of nuclear "pasta" on neutrino transport in collapsing stellar cores (2007)

Sonoda, Hidetaka, Watanabe, Gentaro, Sato, Katsuhiko, Takiwaki, Tomoya, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Nuclear ``pasta'', nonspherical nuclei in dense matter, is predicted to occur in collapsing supernova cores. We show how pasta phases affect the neutrino transport cross section via weak neutral...

Large-scale molecular-dynamics simulation of nanoscale hydrophobic interaction and nanobubble formation (2005)

Koishi, Takahiro, Yasuoka, Kenji, Ebisuzaki, Toshikazu, Yoo, S., Zeng, Xiao Cheng

We performed large-scale molecular-dynamics simulation of nanoscale hydrophobic interaction manifested by the formation of nanobubble between nanometer-sized hydrophobic clusters at constrained...

Simulation of Transitions between "Pasta" Phases in Dense Matter (2004)

Watanabe, Gentaro, Maruyama, Toshiki, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Calculations of equilibrium properties of dense matter predict that at subnuclear densities nuclei can be rodlike or slablike. To investigate whether transitions between phases with non-spherical...

Phases of hot nuclear matter at subnuclear densities (2003)

Watanabe, Gentaro, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Structure of hot dense matter at subnuclear densities is investigated by quantum molecular dynamics (QMD) simulations. We analyze nucleon distributions and nuclear shapes using two-point correlation...

Nuclear pasta structure in hot neutron stars (2003)

Watanabe, Gentaro, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Structure of cold and hot dense matter at subnuclear densities is investigated by quantum molecular dynamics (QMD) simulations. Obtained phase diagrams show that the density of the phase boundaries...

Structure of cold nuclear matter at subnuclear densities by Quantum Molecular Dynamics (2003)

Watanabe, Gentaro, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Structure of cold nuclear matter at subnuclear densities for the proton fraction $x=0.5$, 0.3 and 0.1 is investigated by quantum molecular dynamics (QMD) simulations. We demonstrate that the phases...

Microscopic Study of Slablike and Rodlike Nuclei: Quantum Molecular Dynamics Approach (2002)

Watanabe, Gentaro, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Structure of cold dense matter at subnuclear densities is investigated by quantum molecular dynamics (QMD) simulations. We succeeded in showing that the phases with slab-like and rod-like nuclei etc....

Microscopic Study of Nuclear "Pasta" by Quantum Molecular Dynamics (2001)

Watanabe, Gentaro, Sato, Katsuhiko, Yasuoka, Kenji, Ebisuzaki, Toshikazu

Structure of cold dense stellar matter at subnuclear densities is investigated with quantum molecular dynamics (QMD). We succeeded in showing that the phases with slab-like and rod-like nuclei etc....