Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Takayuki Kumada"'
Autor:
Takayuki Kumada, Daisuke Miura, Kazuhiro Akutsu-Suyama, Kazuki Ohishi, Toshiaki Morikawa, Yukihiko Kawamura, Jun-ichi Suzuki, Takayuki Oku, Naoya Torikai, Tomotake Niizeki
Publikováno v:
Journal of Applied Crystallography. 55(5):1147-1153
Spin-contrast-variation neutron reflectivity obtains multiple reflectivity curves from a single sample and a single beam source. We used the strong point of the technique to reveal that, although methylated-perhydropolysilazane-derived silica layer h
Publikováno v:
Nihon Kessho Gakkaishi. 63:287-293
Publikováno v:
Photochem; Volume 2; Issue 3; Pages: 798-809
Coulomb explosion experiments using linearly polarized intense 60 fs laser pulses were conducted for structural characterization of three dichloroethylene (DCE) isomers, 1,1-DCE, cis-1,2-DCE, and trans-1,2-DCE. Under relatively low laser intensity at
Autor:
Yukihiko Kawamura, Shin-ichi Takata, Jun-ichi Suzuki, Daisuke Miura, Yojiro Oba, Ryuhei Motokawa, Y. Miyachi, Kosuke Hiroi, Takayuki Kumada, Hiroshi Nakagawa, Takahiro Iwata, Toshiaki Morikawa, Takashi Ohhara, Kazuki Ohishi, Yurina Sekine
Publikováno v:
Journal of Applied Crystallography. 54:454-460
A spin-contrast-variation neutron powder diffractometry technique that extracts the structure factor of hydrogen atoms, i.e. the contribution of hydrogen atoms to a crystal's structure factor, has been developed. Crystals of L-glutamic acid were disp
Autor:
Tomohito Otobe, Takayuki Kumada, Hiroshi Akagi, Hirokazu Hasegawa, Ryuji Itakura, Yasuhiro Ohshima
Publikováno v:
Chemistry Letters. 49:416-418
We demonstrate isotope selective ionization of I79Br and I81Br isotopologues using field-free alignment induced by a linearly-polarized nanosecond laser pulse with rapid turn off at the maximum. Fo...
Autor:
Kazuki Ohishi, Yukihiko Kawamura, Naoya Torikai, Jun-ichi Suzuki, Toshiaki Morikawa, Takayuki Kumada, Masae Sahara, Kazuhiro Akutsu
Publikováno v:
Journal of Applied Crystallography. 52(5):1054-1060
We developed a technique of spin-contrast-variation neutron reflectometry (SCV-NR). Polarized-neutron reflectivity curves of film samples vary as a function of their proton-polarization P. The P-dependent reflectivity curves of a polystyrene film was
Autor:
Ryuhei Motokawa, Koji Kaneko, Yojiro Oba, Takayuki Nagai, Yoshihiro Okamoto, Taishi Kobayashi, Takayuki Kumada, William T. Heller
Publikováno v:
Journal of Non-Crystalline Solids. 578:121352
Publikováno v:
hamon. 31:5-6
Autor:
Takayuki Kumada, Daisuke Yamaguchi, Kazuki Ohishi, Shin-ichi Takata, Satoshi Koizumi, Ryo Mashita, Tomomi Masui, Yohei Noda, Hiroyuki Kishimoto, Jun-ichi Suzuki
Publikováno v:
Journal of Applied Crystallography. 49:2036-2045
Dynamic nuclear polarization (DNP) at low temperature (1.2 K) and high magnetic field (3.3 T) was applied to a contrast variation study in small-angle neutron scattering (SANS) focusing on industrial rubber materials. By varying the scattering contra
Autor:
Keiki Kishikawa, You Iida, Yusuke Sasaki, Shota Aoyagi, Ryuhei Motokawa, Michinari Kohri, Takayuki Kumada, Tatsuo Taniguchi
Publikováno v:
Macromolecules. 49:6041-6049
We present a method for fabricating photonic crystals (PCs) by polymerization-induced microphase separation of block copolymers (BCPs). Molecular weight of BCP for PCs is so large that it has been difficult for conventional solution casting and annea