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pro vyhledávání: '"Walba, David M."'
Autor:
Thoen, Jan, Cordoyiannis, George, Korblova, Eva, Walba, David M., Clark, Noel A., Jiang, Wanhe, Mehl, Georg H., Glorieux, Christ
The idea that rod-like molecules possessing an electric dipole moment could exhibit a ferroelectric nematic phase was suggested more than a century ago. However, only recently such a phase has been reported for two quite different liquid crystals: RM
Externí odkaz:
http://arxiv.org/abs/2403.01970
Autor:
Zhong, Bingchen, Shuai, Min, Chen, Xi, Martinez, Vikina, Korblova, Eva, Glaser, Matthew A., Maclennan, Joseph E., Walba, David M., Clark, Noel A.
The current intense study of ferroelectric nematic liquid crystals was initiated by the observation of the same ferroelectric nematic phase in two independently discovered organic rod-shaped mesogenic compounds, RM734 and DIO. We recently reported th
Externí odkaz:
http://arxiv.org/abs/2312.17400
Thermotropic reentrant isotropy and antiferroelectricity in the ferroelectric nematic material RM734
Autor:
Chen, Xi, Shuai, Min, Zhong, Bingchen, Martinez, Vikina, Korblova, Eva, Glaser, Matthew A., Maclennan, Joseph E., Walba, David M., Clark, Noel A.
We report a transition from the ferroelectric nematic liquid crystal ($N_F$) phase to a lower-temperature, antiferroelectric fluid phase having reentrant isotropic symmetry ($I_A$), in the liquid crystal compound RM734 doped with small concentrations
Externí odkaz:
http://arxiv.org/abs/2309.04935
Autor:
Chen, Xi, Martinez, Vikina, Nacke, Pierre, Korblova, Eva, Manabe, Atsutaka, Klasen-Memmer, Melanie, Freychet, Guillaume, Zhernenkov, Mikhail, Glaser, Matthew A., Radzihovsky, Leo, Maclennan, Joseph E., Walba, David M., Bremer, Matthias, Giesselmann, Frank, Clark, Noel A.
Publikováno v:
PNAS (2022)
We report the smectic $A_F$, a new liquid crystal phase of the ferroelectric nematic realm. The smectic $A_F$ is a phase of small polar, rod-shaped molecules which form two-dimensional fluid layers spaced by approximately the mean molecular length. T
Externí odkaz:
http://arxiv.org/abs/2206.12965
Autor:
Chen, Xi, Martinez, Vikina, Korblova, Eva, Freychet, Guillaume, Zhernenkov, Mikhail, Glaser, Matthew A., Wang, Cheng, Zhu, Chenhui, Radzihovsky, Leo, Maclennan, Joseph E., Walba, David M., Clark, Noel A.
Publikováno v:
Proceedings of the National Academy of Sciences 120 (8), e2217150120 (2023)
We have structurally characterized the liquid crystal phase that appears as an intermediate state when a dielectric nematic, having polar disorder of its molecular dipoles, transitions to the almost perfectly polar-ordered ferroelectric nematic. This
Externí odkaz:
http://arxiv.org/abs/2112.14222
Autor:
Chen, Xi, Zhu, Zhecong, Magrini, Mitchell J., Korblova, Eva, Park, Cheol S., Glaser, Matthew A., Maclennan, Joseph E., Walba, David M., Clark, Noel A.
Publikováno v:
Liquid Crystals 49 (11), 1531-1544 (2022)
The organic mesogens RM734 and DIO are members of separate molecular families featuring distinct molecular structures. These families, at the present time, are the only ones known to exhibit a ferroelectric nematic liquid crystal (LC) phase. Here we
Externí odkaz:
http://arxiv.org/abs/2110.10826
Autor:
Chen, Xi, Korblova, Eva, Glaser, Matthew A., Maclennan, Joseph E., Walba, David M., Clark, Noel A.
Publikováno v:
Proceedings of the National Academy of Sciences 118 (22), e2104092118 (2021)
We show that surface interactions can vectorially structure the three-dimensional polariza-tion field of a ferroelectric fluid. The contact between a ferroelectric nematic liquid crystal and a surface with in-plane polarity generates a preferred in-p
Externí odkaz:
http://arxiv.org/abs/2012.15335
Akademický článek
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Autor:
Chen, Xi, Korblova, Eva, Glaser, Matthew A., Maclennan, Joseph E., Walba, David M., Clark, Noel A.
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2021 Jun 01. 118(22), 1-11.
Externí odkaz:
https://www.jstor.org/stable/27040976
Autor:
Tuchband, Michael R., Paterson, Daniel A., Salamończyk, Mirosław, Norman, Victoria A., Scarbrough, Alyssa N., Forsyth, Ewan, Garcia, Edgardo, Wang, Cheng, Storey, John M. D., Walba, David M., Sprunt, Samuel, Jákli, Antal, Zhu, Chenhui, Imrie, Corrie T., Clark, Noel A.
We synthesized the liquid crystal dimer and trimer members of a series of flexible linear oligomers and characterized their microscopic and nanoscopic properties using resonant soft x-ray scattering and a number of other experimental techniques. On t
Externí odkaz:
http://arxiv.org/abs/1710.00922