WebStatistical mechanics of coil-hairpin transition in a single stranded DNA oligomer arXiv:cond-mat/0701368v1 [cond-mat.stat-mech] 16 Jan 2007 Sanjay Kumar, Debaprasad Giri† and Yashwant Singh Department of Physics, Banaras Hindu University, Varanasi 221 005, India, † Physics Section, MMV, Banaras Hindu University, Varanasi 221 005, India. Web(4) A coil–stretch transition in elongational flows and fields has been theoretically predicted 60,61 and experimentally observed to occur at Wi ≈ 0.5. 8,9,48 As a knot reduces the relaxation time of a molecule and, consequently, changes the effective Wi characterizing polymer behavior, we are interested in studying the steady-state behavior of …

18.1: Helix–Coil Transition - Chemistry LibreTexts

WebJan 25, 2024 · In systems with extensile dipoles, however, our simulations uncover an active coil-stretch transition whereby the polymer spontaneously unfolds and stretches out in its own self-induced hydrodynamic flow, and we characterize this transition in terms of a … Web1/Tz11,12,1°). This sharp coil-stretch transition has been observed in an important series of experiments by Keller and coworkers13a4). We might think at first sight that this transition should show up in turbulent flows and bring in some important nonlinear effects. famous arc

The effects of coil–stretch transition behavior of polyfluorene …

Webexceeds a critical threshold. This phenomenon is known as the coil{stretch transition [1] and is observed in both laminar [2, 3] and random ows [4{6], even though with partially di erent features in the two cases. Several observables have been used to characterize the coil{stretch transition. A natural quantity is the steady-state distribution of WebApr 29, 2024 · We found a transient state with stretch-coil coexistence among polymers in the stress relaxation process. Further structure analysis revealed a scenario of local jamming at the transient state, resulting in an entropy barrier for stretch-coil transition of partial polymers. WebAug 22, 2003 · Because the hydrodynamic interactions are reduced by stretching, a solute polymer coil should unwind abruptly when a certain critical value of the velocity gradient … co op foods in leduc