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| 001 | 1047641 | ||
| 005 | 20251120122610.0 | ||
| 037 | _ | _ | |a FZJ-2025-04438 |
| 041 | _ | _ | |a English |
| 100 | 1 | _ | |a Kang, Kyongok |0 P:(DE-Juel1)130749 |b 0 |e Corresponding author |
| 111 | 2 | _ | |a The 9th International Soft Matter Conference |g ISMC2025 |c Chania, Crete |d 2025-09-29 - 2025-10-03 |w Greece |
| 245 | _ | _ | |a Charged Rod-Glasses in non-Equilibrium Shear Flow Response |
| 260 | _ | _ | |c 2025 |
| 336 | 7 | _ | |a Conference Paper |0 33 |2 EndNote |
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| 520 | _ | _ | |a The equilibrium phase behaviour [1-3] are presented for the concentrated suspension of bacteriophage fd, DNA-viruses charged DNA-viruses, at sufficiently low ionic strengths (below 1 mM Tris/HCl buffer), which is a good model system for highly charged colloidal rods, exhibiting the phase transitions; from the nematic-to-chiral nematic and other hierarchical chiral-mesophases (Xpattern and helical domains) to the glass states, in an increase of the rod-concentration [4-5]. In this talk, experiments on both equilibrium and the field-induced phase transition, as well as sheer response of the glass state in flow will be discussed. The (structural) glass transition occurs well within the full chiral-nematic state, where the particle dynamics and the orientation texture dynamics are simultaneously arrested, at the same concentration [3-5]. The glass is also found to exhibit several types of non-uniform flow profiles, depending on the externally applied shear rate: At low shear rates plug flow is observed and at intermediate shear rates gradient-banded flow profiles are found [4, 5]. At high shear rates the glass is melted, leading to a linear flow profile. Finally, as one of interesting findings for chiral-mesophases, is a “chiral-glass”, driven by the replica symmetry breaking (RSB), determined by both real- and Fourier-space [6], kept between the two “replicas” of larger chiral-nematic domain (at a lower concentration) and the “helical-domains” (at a higher concentration) of charged DNA-rods [7]. As will be shown, there is a subtle interplay between the stress originating from inter-particle interactions within the domains and the texture stress due to inter-domain interactions.//References[1] K. Kang and J. K. G. Dhont, Phys. Rev. Lett. 110, 015901, 2013.[2] K. Kang, Soft Matter, 10, 3311-3324, 2014: Soft Matter 9, 4401, 2013.[3] K. Kang, Sci. Rep. 11: 3472, 2021.[4] K. Kang, J. Phys. Commun, 5, 045011, 2021.[5] D. Parisi, D. Vlassopoulos, H. Kriegs, J. K. G. Dhont, and K. Kang, Journal of Rheology 66, 365, 2022: Phys. Rev. Fluids 2, 043301 (2017).[6] K. Kang, J. Phys. Commun, 5, 065001, 2021.[7] K. Kang, J. Phys. Commun, 6, 015001, 2022. |
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