Papers - Koji Asaka

In situ TEM study on structural and electric conduction properties of a multiwall carbon nanotube connected to a Mo electrode Reviewed

Yuji Shinomiya, Koji Asaka, Hitoshi Nakahara, and Yahachi Saito

Surface and Interface Analysis   48   1206 - 1209   2016

Structure of amorphous carbon films deposited on Ni nanoparticles under ultrahigh vacuum at room temperature Reviewed

Koji Asaka and Yahachi Saito

Surface and Interface Analysis   48   1203 - 1205   2016

Transformation of silicon nanoparticles on carbon nanotube heater to hollow graphitic nanocapsules via silicon carbide Reviewed

Koji Asaka, Tomohiro Terada, and Yahachi Saito

Diamond and Related Materials   50   49 - 54   2014

Synthesis and photophysics of quaterrylene molecules in single-walled carbon nanotubes: excitation energy transfer between a nanoscale cylinder and encapsulated molecules Reviewed

Takeshi Koyama, Takuya Tsunekawa, Takeshi Saito, Koji Asaka, Yahachi Saito, Hideo Kishida, and Arao Nakamura

The Journal of Physical Chemistry C   118   21671 - 21681   2014

In situ TEM study on changes in structure and electrical conductance of carbon nanotube-gold contact induced by local joule heating Reviewed

Motoyuki Karita, Koji Asaka, Hitoshi Nakahara, and Yahachi Saito

Journal of Materials Science   48   936 - 940   2013

Few-layer epitaxial graphene with large domains on C-terminated 6H-SiC Reviewed

Hailong Hu, Akkawat Ruammaitree, Hitoshi Nakahara, Koji Asaka, and Yahachi Saito

Surface and Interface Analysis   44   793 - 796   2012

Study on structure of heat-treated fullerene nanowhiskers and their field electron emission characteristics Reviewed

Koji Asaka, Tadachika Nakayama, Kun’ichi Miyazawa, and Yahachi Saito

Surface and Interface Analysis   44   780 - 783   2012

In situ TEM study on the improvement of contact resistance between a carbon nanotube and metal electrodes by local melting Reviewed

Motoyuki Karita, Koji Asaka, Hitoshi Nakahara, and Yahachi Saito

Surface and Interface Analysis   44   674 - 677   2012

Evolution of field electron emission pattern from multilayered graphene induced by structural change of edge Reviewed

Kazuya Nakakubo, Koji Asaka, Hitoshi Nakahara, and Yahachi Saito

Applied Physics Express   5   055101-1-3   2012

Structures and field emission properties of heat-treated C60 fullerene nanowhiskers Reviewed

Koji Asaka, Tadachika Nakayama, Kun’ichi Miyazawa, and Yahachi Saito

Carbon   50   1209 - 1215   2012

Ultrafast energy transfer of one-dimensional excitons between carbon nanotubes: a femtosecond time-resolved luminescence study Reviewed

Takeshi Koyama, Yasumitsu Miyata, Koji Asaka, Hisanori Shinohara, Yahachi Saito, and Arao Nakamura

Physical Chemistry Chemical Physics   14   1070 - 1084   2012

Fabrication of gas field ion emitter by field induced oxygen etching method Reviewed

Yasushi Sugiura, Huarong Liu, Tatsuo Iwata, Shigekazu Nagai, Kazuo Kajiwara, Koji Asaka, Yahachi Saito, and Koichi Hata

e-Journal of Surface Science and Nanotechnology   9   344 - 347   2011

Graphitization of amorphous carbon on a multiwall carbon nanotube surface by catalyst-free heating Reviewed

Koji Asaka, Motoyuki Karita, and Yahachi Saito

Applied Physics Letters   99   091907-1-3   2011

Chirality assignment to carbon nanotubes integrated in MEMS by tilted-view transmission electron microscopy Reviewed

Matthias Muoth, Fabian Gramm, Koji Asaka, Lukas Durrer, Thomas Helbling, Cosmin Roman, Shih-Wei Lee, and Chiristofer Hierold

Sensors and Actuators B   154   155 - 159   2011

Joining of multiwall carbon nanotubes for the end-contact configuration by applying electric current Reviewed

Koji Asaka, Motoyuki Karita, and Yahachi Saito

Materials Letters   65   1832 - 1834   2011

Femtosecond luminescence decay due to exciton energy transfer in single-walled carbon nanotube bundles Reviewed

Takeshi Koyama, Koji Asaka, Naoki Hikosaka, Hideo Kishida, Yahachi Saito, and Arao Nakamura

Journal of Luminescence   131   494 - 497   2011

Ultrafast exciton energy transfer in bundles of single-walled carbon nanotubes Reviewed

Takeshi Koyama, Koji Asaka, Naoki Hikosaka, Hideo Kishida, Yahachi Saito, and Arao Nakamura

The Journal of Physical Chemistry Letters   2   127 - 132   2011

Modification of interface structure and contact resistance between a carbon nanotube and a gold electrode by local melting Reviewed

Koji Asaka, Motoyuki Karita, and Yahachi Saito

Applied Surface Science   257   2850 - 2853   2011

Enhancement of third-order optical nonlinearities in carbon nanotubes by encapsulated fullerenes Reviewed

Daksuke Hosooka, Takeshi Koyama, Hideo Kishida, Koji Asaka, Yahachi Saito, Takeshi Saito, and Arao Nakamura

AIP Conference Proceedings   1399   831 - 832   2011

Exciton energy transfer between single-walled carbon nanotubes in femtosecond regime Reviewed

Takeshi Koyama, Koji Asaka, Naoki Hikosaka, Hideo Kishida, Yahachi Saito, and Arao Nakamura

AIP Conference Proceedings   1399   759 - 760   2011