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US 2019/0377215 A1Published application
Highly tunable magnetic liquid crystals
AssigneeThe Regents of the University of California
InventorsYadong Yin, Mingsheng Wang
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Abstract
In various embodiments magnetically actuated liquid crystals are provided as well as method of manufacturing such, methods of using the liquid crystals and devices incorporating the liquid crystals. In one non-limiting embodiment the liquid crystals comprise Fe3O4 nanorods where the nanorods are coated with a silica coating.
Claims15
1-91 (canceled)
A method of making a thin film patterned with one or more optical polarizations, said method comprising:
- providing a substrate having deposited thereon a resin containing magnetic nanorods, where said magnetic nanorods are coated with a silica and/or polymer layer and form a stable colloidal dispersion, where said magnetic nanorods function as a liquid crystal that performs optical switching in response to a magnetic field;
- applying a magnetic field to said resin to align said magnetic nanorods in all or in one or more regions of said substrate coated with said resin;
- and
- curing/crosslinking said resin in all or in one or more regions of said substrate coated with said resin to fix said magnetic nanorods in a first alignment thereby providing a first optical polarization.
1 more element
A thin film patterned with one or more optical polarizations, said thin film comprising:
- magnetic nanorods, where said magnetic nanorods are coated with a silica and/or polymer layer and form a stable colloidal dispersion, where said magnetic nanorods function as a liquid crystal that performs optical switching in response to a magnetic field, and where the magnetic nanorods are disposed in one or more predetermined orientations at different locations in said thin film.
Dependencies are inferred from the claim text.