Mayama H
J Biol Phys. 2002 Dec;28(4):721-31. doi: 10.1023/A:1021255226009.
We have investigated a rhythmic conformational change in a single polymer chain (T4DNA, 166 kbp, the contour length = 56 μm) between a folded state and a elongated state under thermodynamically open conditions using a focused continuons wave (cw) Nd:YAG laser beam (wavelength λ = 1064 nm), where the focused laser beam plays dual roles both of trapping of a polymer chain at the focus and making temperature gradient there. The oscillatory phenomenon is discuseed in terms of a limit-cycle oscillation with dissipation of photon energy.
我们使用聚焦连续波（cw）Nd:YAG激光束（波长λ = 1064 nm），在热力学开放条件下研究了单个聚合物链（T4DNA，166 kbp，轮廓长度 = 56 μm）在折叠态和伸长态之间的节律性构象变化，其中聚焦激光束起到了在焦点处捕获聚合物链并在该处产生温度梯度的双重作用。根据光子能量耗散的极限环振荡来讨论这种振荡现象。
