Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Daniel A. Beller"'
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
Recent studies have shown that packings of cells, both eukaryotic cellular tissues and growing or swarming bacterial colonies, can often be understood as active nematic fluids. A key property of volume-conserving active nematic model systems is chaot
Externí odkaz:
https://doaj.org/article/7bc8d7ef12314d4c80ab3245562e2031
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-11 (2018)
Nematic liquid crystals have a rich energy landscape which can define elastic fields to guide colloidal assembly. Here the authors show controllable trapping of colloidal particles by placing them in a system with wavy walls which are exploited to ob
Externí odkaz:
https://doaj.org/article/e4ab4ddd93314cffa5c3fe1a38f39d9b
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Defects in liquid crystals play a central role in determining their structural and dynamic properties, whilst it is challenging to characterize the defects at a molecule level. Here, Gimet al. trace the evolution pathway of defects during a phase tra
Externí odkaz:
https://doaj.org/article/0e92966a6c754d50be89db241954df73
Autor:
Daniel M. Sussman, Daniel A. Beller
Publikováno v:
Frontiers in Physics, Vol 7 (2019)
Numerical modeling of nematic liquid crystals using the tensorial Landau-de Gennes (LdG) theory provides detailed insights into the structure and energetics of the enormous variety of possible topological defect configurations that may arise when the
Externí odkaz:
https://doaj.org/article/8c97ac29a97a4c379b5b3074e0de69aa
Autor:
Daniel A. Beller, Thomas Machon, Simon Čopar, Daniel M. Sussman, Gareth P. Alexander, Randall D. Kamien, Ricardo A. Mosna
Publikováno v:
Physical Review X, Vol 4, Iss 3, p 031050 (2014)
We propose a construction of a cholesteric pitch axis for an arbitrary nematic director field as an eigenvalue problem. Our definition leads to a Frenet-Serret description of an orthonormal triad determined by this axis, the director, and the mutuall
Externí odkaz:
https://doaj.org/article/e361f4c2c0fb46d586ab5042e2c06a66
Autor:
Daniel A. Beller, Mohamed A. Gharbi, Apiradee Honglawan, Kathleen J. Stebe, Shu Yang, Randall D. Kamien
Publikováno v:
Physical Review X, Vol 3, Iss 4, p 041026 (2013)
Focal conic domains (FCDs) in smectic-A liquid crystals have drawn much attention, both for their exquisitely structured internal form and for their ability to direct the assembly of micromaterials and nanomaterials in a variety of patterns. A key to
Externí odkaz:
https://doaj.org/article/32c0d75a053a47928b85393a1dda69c9
Autor:
Sophie Ettinger, Clarissa F. Dietrich, Peter J. Collings, Arjun G. Yodh, Chandan K. Mishra, Cornelia Miksch, Daniel A. Beller
Publikováno v:
Soft Matter. 18:487-495
In lyotropic chromonic liquid crystals (LCLCs), twist distortion of the nematic director costs much less energy than splay or bend distortion. This feature leads to novel mirror-symmetry breaking director configurations when the LCLCs are confined by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20f6e8127d512bdab3bf17f811d72375
https://doi.org/10.1039/d1sm01209f
https://doi.org/10.1039/d1sm01209f
Publikováno v:
ACS Applied Nano Materials. 4:10682-10691
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5570b7ff1766b299e272bcb2cc1eb9d
https://doi.org/10.1021/acsanm.1c02126
https://doi.org/10.1021/acsanm.1c02126
Publikováno v:
Soft Matter. 17:3848-3854
Spontaneous emergence of chirality is a pervasive theme in soft matter. We report a transient twist forming in achiral nematic liquid crystals confined to a capillary tube with square cross section. At the smectic-nematic phase transition, intertwine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e12bb890aef9fa7342430143a251cf50
https://doi.org/10.1039/d0sm02040k
https://doi.org/10.1039/d0sm02040k
Autor:
Fereshteh L. Memarian, Joseph D. Lopes, Fabian Jan Schwarzendahl, Madhuvanthi Guruprasad Athani, Niranjan Sarpangala, Ajay Gopinathan, Daniel A. Beller, Kinjal Dasbiswas, Linda S. Hirst
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, vol 118, iss 52
Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America
Significance Active nematics are ordered liquid crystalline fluids that exhibit spontaneous persistent flows and collective dynamics. The development of motile biopolymer systems inspired by nature has recently attracted considerable attention to out
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2de98985cc34083d645e5fd4892a2db
https://escholarship.org/uc/item/7d15j2hf
https://escholarship.org/uc/item/7d15j2hf
