・ "Formation control of electron-hole　droplets in diamond by a weak pulse injection"
J. Omachi, N. Naka, K. Yoshioka, M. Kuwata-Gonokami, Journal of Physics C: Conference Series 148, 012051-1-3　(2009).

・ "Density-dependent exciton kinetics in synthetic diamond crystals"
N. Naka, J. Omachi, H. Sumiya, K. Tamasaku, T. Ishikawa, and M. Kuwata-Gonokami, Phys. Rev. B 80, 035201-1-7 (2009).

・ "Paraexcitons of Cu2O confined by a strain trap and high magnetic fields"
Christian Sandfort, Jan Brandt, Christoph Finke, Dietmar Fr¨ohlich, and Manfred Bayer, Heinrich Stolz and Nobuko Naka, Phys. Rev. B 84, 165215-1-7 (2011).

・ Hajime Hirabayashi, Nobuko Naka, Koichiro Tanaka, Makoto Kuwata-Gonokami, Yuri P. Svirko, and Alexander N. Obraztsov: Three-dimensional Raman imaging of diamond nanotips, International Workshop "Nanocarbon Photonics and Optoelectronics"(Koli, Finland, August 2010).

・ J. Omachi, T. Suzuki, N. T. Long, K. Yoshioka, N. Naka, and M. Kuwata-Gonokami: Mid-infrared dielectric response of electron-hole droplets in diamond, EXCON’10　（Brisbane, Australia, July 2010）.

・ Yuji Hazama, Nobuko Naka, Makoto Kuwata-Gonokami, Koichiro Tanaka : Wave-vector-dependent intra-excitonic transition rate in diamond, International Conference on Correlation Effects in Radiation Fields (Rostock, Germany, September 2011).

・ Nobuko Naka, IkukoAkimoto, and Masanobu Shirai: Exciton-exciton scattering studied by time-resolved cyclotron resonance International Conference on Correlation Effects in Radiation Fields (Rostock, Germany, September 2011).

・ Koirala Sandhaya, Nobuko Naka, and Koichiro Tanaka: Temperature dependence of decay time due to excitons bound by oxygen vacancy in Cu2O, Poster Award (GCOE Symposium: Emerging Frontiers of Physics, February 2010).