Glass transition of the two distinct single-chain particles of poly(N-isopropylacrylamide) Weisi Yin, Hu Yang and Rongshi Cheng Eur. Phys. J. E, 17 1 (2005) 1-5 Published online: 13 April 2005 DOI: 10.1140/epje/i2004-10113-2