Inverse 'guest-host' effect: ferroelectric nanoparticles mediated switching of nematic liquid crystals
| Autor: | Anatoliy Glushchenko, Yuriy Garbovskiy, Alexander V. Emelyanenko |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0303 health sciences
Materials science Fullerene Condensed matter physics business.industry Physics::Optics Nanoparticle 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology Ferroelectricity law.invention Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science 03 medical and health sciences Semiconductor Ferromagnetism law Liquid crystal Electric field General Materials Science 0210 nano-technology business 030304 developmental biology |
| Zdroj: | Nanoscale. 12(31) |
| ISSN: | 2040-3372 |
| Popis: | Liquid crystals are widely used as a host matrix to embed different materials: dyes, fullerenes, carbon nanotubes, various nanoparticles (metallic, semiconductor, ferromagnetic, ferroelectric). The usual approach is related to the so called "guest-host" effect: external electric (or magnetic) fields drive liquid crystals (host), and liquid crystals reorient embedded particles (guest). In this paper we report an experimental observation of the effect that is completely opposite to the classical "guest-host" phenomenon: ferroelectric nanoparticles being switched by an external field mediate the switching of liquid crystals. Our experiments show that ferroelectric nanoparticles reorient and hold liquid crystal molecules in a direction of the ferroelectric nanoparticles orientation even when an external electric field attempts to orient a liquid crystal in an orthogonal direction. |
| Databáze: | OpenAIRE |
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