Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

Katarína Zakutanská; Dmytro Miakota; Veronika Lacková; Shie Chang Jeng; Dorota Węgłowska; Filippo Agresti; Markéta Jarošová; Peter Kopčanský; Natália Tomašovičová

doi:10.1016/j.molliq.2023.123357

Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

Katarína Zakutanská^*, Dmytro Miakota, Veronika Lacková, Shie Chang Jeng, Dorota Węgłowska, Filippo Agresti, Markéta Jarošová, Peter Kopčanský, Natália Tomašovičová

^*Corresponding author for this work

Institute of Imaging and Biomedical Photonics

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to the electric field the state induced by the electric field stays remembered due to the presence of aerosil nanoparticles. In this paper, we investigated the memory effect induced by electric and magnetic fields. Liquid crystal 4-cyano-4′-pentylbiphenyl doped with non-magnetic aerosil nanoparticles and a mixture of aerosil nanoparticles and elongated magnetic goethite nanoparticles were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The measurements revealed a great impact of temperature and heating/cooling rate on the hysteresis of the system. Observed electromechanical and magnetomechanical memory effect provides potential use of the system as voltage-driven or magnetic field-driven non-volatile memory devices.

Original language	English
Article number	123357
Journal	Journal of Molecular Liquids
Volume	391
DOIs	https://doi.org/10.1016/j.molliq.2023.123357
State	Published - 1 Dec 2023

Keywords

Aerosil nanoparticles
Liquid crystals
Magnetic nanoparticles
Non-volatile memory

Access to Document

10.1016/j.molliq.2023.123357

Cite this

Zakutanská, K., Miakota, D., Lacková, V., Jeng, S. C., Węgłowska, D., Agresti, F., Jarošová, M., Kopčanský, P., & Tomašovičová, N. (2023). Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles. Journal of Molecular Liquids, 391, Article 123357. https://doi.org/10.1016/j.molliq.2023.123357

@article{847cf0311d4c40e1bf485145b6d05e55,

title = "Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles",

abstract = "Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to the electric field the state induced by the electric field stays remembered due to the presence of aerosil nanoparticles. In this paper, we investigated the memory effect induced by electric and magnetic fields. Liquid crystal 4-cyano-4′-pentylbiphenyl doped with non-magnetic aerosil nanoparticles and a mixture of aerosil nanoparticles and elongated magnetic goethite nanoparticles were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The measurements revealed a great impact of temperature and heating/cooling rate on the hysteresis of the system. Observed electromechanical and magnetomechanical memory effect provides potential use of the system as voltage-driven or magnetic field-driven non-volatile memory devices.",

keywords = "Aerosil nanoparticles, Liquid crystals, Magnetic nanoparticles, Non-volatile memory",

author = "Katar{\'i}na Zakutansk{\'a} and Dmytro Miakota and Veronika Lackov{\'a} and Jeng, {Shie Chang} and Dorota W{\c e}g{\l}owska and Filippo Agresti and Mark{\'e}ta Jaro{\v s}ov{\'a} and Peter Kop{\v c}ansk{\'y} and Nat{\'a}lia Toma{\v s}ovi{\v c}ov{\'a}",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s)",

year = "2023",

month = dec,

day = "1",

doi = "10.1016/j.molliq.2023.123357",

language = "English",

volume = "391",

journal = "Journal of Molecular Liquids",

issn = "0167-7322",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

AU - Zakutanská, Katarína

AU - Miakota, Dmytro

AU - Lacková, Veronika

AU - Jeng, Shie Chang

AU - Węgłowska, Dorota

AU - Agresti, Filippo

AU - Jarošová, Markéta

AU - Kopčanský, Peter

AU - Tomašovičová, Natália

PY - 2023/12/1

Y1 - 2023/12/1

N2 - Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to the electric field the state induced by the electric field stays remembered due to the presence of aerosil nanoparticles. In this paper, we investigated the memory effect induced by electric and magnetic fields. Liquid crystal 4-cyano-4′-pentylbiphenyl doped with non-magnetic aerosil nanoparticles and a mixture of aerosil nanoparticles and elongated magnetic goethite nanoparticles were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The measurements revealed a great impact of temperature and heating/cooling rate on the hysteresis of the system. Observed electromechanical and magnetomechanical memory effect provides potential use of the system as voltage-driven or magnetic field-driven non-volatile memory devices.

AB - Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to the electric field the state induced by the electric field stays remembered due to the presence of aerosil nanoparticles. In this paper, we investigated the memory effect induced by electric and magnetic fields. Liquid crystal 4-cyano-4′-pentylbiphenyl doped with non-magnetic aerosil nanoparticles and a mixture of aerosil nanoparticles and elongated magnetic goethite nanoparticles were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The measurements revealed a great impact of temperature and heating/cooling rate on the hysteresis of the system. Observed electromechanical and magnetomechanical memory effect provides potential use of the system as voltage-driven or magnetic field-driven non-volatile memory devices.

KW - Aerosil nanoparticles

KW - Liquid crystals

KW - Magnetic nanoparticles

KW - Non-volatile memory

UR - http://www.scopus.com/inward/record.url?scp=85174681124&partnerID=8YFLogxK

U2 - 10.1016/j.molliq.2023.123357

DO - 10.1016/j.molliq.2023.123357

M3 - Article

AN - SCOPUS:85174681124

SN - 0167-7322

VL - 391

JO - Journal of Molecular Liquids

JF - Journal of Molecular Liquids

M1 - 123357

ER -

Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this