| Language: | English |
|---|---|
| Type: | Article |
| Authors: | Hiroyuki Mayama, Shin-ichiro M. Nomura, Hidehiro Oana and Kenichi Yoshikawa |
| Journal: | Chemical Physics Letters |
| ISSN: | 0009-2614 |
| Volume: | 330 |
| Number: | 3-4 |
| Month: | 11 |
| Year: | 2000 |
| Actual year: | 2000 |
| Pages: | 361-367 |
| doi: | 10.1016/s0009-2614(00)01076-9 |
| Abstract: | We report a novel rhythmic phenomenon of a single polymer chain between the elongated coil state and the folded compact state under thermodynamically open conditions. It is shown that a T4 DNA molecule (166 kbp) in poly(ethylene glycol) (PEG) solution exhibits rhythmic conformational change at the focus of a continuous wave (CW) Nd:YAG laser beam (1064 nm), where the laser beam plays dual roles: trapping a molecular chain and making a temperature gradient around the focus. The conformational oscillation is discussed in terms of the limit-cycle oscillation of a single polymer chain driven through the dissipation of the photon energy. |
Hiroyuki Mayama, Shin-ichiro M. Nomura, Hidehiro Oana and Kenichi Yoshikawa, Chemical Physics Letters, 330, 361-367 (2000)