Nanostructure of Cationic Polymer Brush at the Air/Water Interface Hideki Matsuoka, Shin’ichi Fujita, Arjun Ghosh, Shunichi Nakayama, Yuta Yamakawa, Shin-ichi Yusa and Yoshiyuki Saruwatari MATEC Web of Conferences, 4 (2013) 04001 Published online: 13 August 2013 DOI: 10.1051/matecconf/20130404001