| Автор | Gevorkian, S. G. |
| Автор | Allahverdyan, A. E. |
| Автор | Gevorgyan, D. S. |
| Автор | Hu, C.-K. |
| Дата выпуска | 2011-07-01 |
| dc.description | Our micromechanical experiments show that viscoelastic features of type-I collagen fibril at physiological temperatures display essential dependence on the frequency and speed of heating. For temperatures of 20–30 <sup>°</sup>C the internal friction has a sharp maximum for a frequency less than 2 kHz. Upon heating the internal friction displays a peak at a temperature T<sub>soft</sub>(v) that essentially depends on the speed of heating v: T<sub>soft</sub>≈70<sup>°</sup>C for v=1<sup>°</sup>C/min, and T<sub>soft</sub>≈25<sup>°</sup>C for v=0.1<sup>°</sup>C/min. At the same temperature T<sub>soft</sub>(v) Young's modulus passes through a minimum. All these effects are specific for the native state of the fibril and disappear after heat-denaturation. Taken together with the known facts that the fibril is axially ordered as quasicrystal, but disordered laterally, we interpret our findings as indications of a glassy state, where T<sub>soft</sub> is the softening transition. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | Europhysics Letters Association |
| Название | Glassy state of native collagen fibril? |
| Тип | lett |
| DOI | 10.1209/0295-5075/95/23001 |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 95 |
| Первая страница | 23001 |
| Последняя страница | 23005 |
| Аффилиация | Gevorkian, S. G.; Yerevan Physics Institute - Alikhanian Brothers Street 2, Yerevan 375036, Armenia; Institute of Physics, Academia Sinica - Nankang, Taipei 11529, Taiwan |
| Аффилиация | Allahverdyan, A. E.; Yerevan Physics Institute - Alikhanian Brothers Street 2, Yerevan 375036, Armenia |
| Аффилиация | Gevorgyan, D. S.; Yerevan State Medical University - Koryun Street 2, Yerevan 375025, Armenia |
| Аффилиация | Hu, C.-K.; Institute of Physics, Academia Sinica - Nankang, Taipei 11529, Taiwan |
| Выпуск | 2 |
