Nakanishi Sana, Yoshikawa Hirofumi, Shoji Satoru, Sekkat Zouheir, Kawata Satoshi
Department of Applied Physics, Osaka University, 2-1 Yamadaoka Suita, Osaka 565-0872, Japan.
J Phys Chem B. 2008 Mar 27;112(12):3586-9. doi: 10.1021/jp800453p. Epub 2008 Mar 5.
We studied the effect of changing temperature on the mechanical properties of nanosized poly(methyl methacrylate) wires fabricated by two-photon fabrication. At around room temperature, the nanowires showed a transition temperature where the shear modulus suddenly changed. This transition temperature was observed to decrease more than 40 K by decreasing the radius of the nanowires from 450 to 150 nm. This size is several times larger in nanowires than reported values of polymer thin film thickness showing a depression of the glass transition temperature.
