Self-oscillating polymer chain

H. Mayama, S. M. Nomura, H. Oana, K. Yoshikawa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)361-367
Number of pages7
JournalChemical Physics Letters
Issue number3-4
Publication statusPublished - 2000 Nov 10
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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