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pro vyhledávání: '"NELSON, DAVID R."'
Unlike coffee and cream that homogenize when stirred, growing micro-organisms (e.g., bacteria, baker's yeast) can actively kill each other and avoid mixing. How do such antagonistic interactions impact the growth and survival of competing strains, wh
Externí odkaz:
http://arxiv.org/abs/2408.16784
This contribution is intended for Journal of Physics A: Mathematical and Theoretical Special issue on Non-equilibrium Dynamics in Complex Systems: Celebrating the Contributions of Uwe T\"{a}uber on his 60th Birthday. Cones with orientational order in
Externí odkaz:
http://arxiv.org/abs/2405.03742
Geometric confinement and topological constraints present promising means of controlling active materials. By combining analytical arguments derived from the Born-Oppenheimer approximation with numerical simulations, we investigate the simultaneous i
Externí odkaz:
http://arxiv.org/abs/2310.06022
Publikováno v:
Physical Review E 108, 054608 (2023)
Conical surfaces pose an interesting challenge to crystal growth: a crystal growing on a cone can wrap around and meet itself at different radii. We use a disk-packing algorithm to investigate how this closure constraint can geometrically frustrate t
Externí odkaz:
http://arxiv.org/abs/2309.14446
Autor:
Nelson, David R.
This contribution will be published in '50 years of the renormalization group', dedicated to the memory of Michael E. Fisher, edited by Amnon Aharony, Ora Entin-Wohlman, David Huse, and Leo Radzihovsky, World Scientific. These personal remembrances c
Externí odkaz:
http://arxiv.org/abs/2306.00955
Publikováno v:
Phys. Rev. Materials 8, 016001 (2024)
Crystalline sheets (e.g., graphene and transition metal dichalcogenides) liberated from a substrate are a paradigm for materials at criticality because flexural phonons can fluctuate into the third dimension. Although studies of static critical behav
Externí odkaz:
http://arxiv.org/abs/2305.06798
Using the Born-Oppenheimer approximation, we present a general description of topological defects dynamics in $p$-atic materials on curved surfaces, and simplify it in the case of active nematics. We find that activity induces a geometric contributio
Externí odkaz:
http://arxiv.org/abs/2304.06739
Publikováno v:
Phys. Rev. Materials 6, 115203 (2022)
A puckered sheet is a freestanding crystalline membrane with an embedded array of bistable buckled units. Recent work has shown that the bistable units behave like spins in a two-dimensional compressible Ising antiferromagnet with, however, a couplin
Externí odkaz:
http://arxiv.org/abs/2208.01085