Viscous mechano-electric response of ferroelectric nematic liquid

Medle Rupnik, Peter (author), Cmok, Luka (author), Sebastián Ugarteche, Nerea (author), Mertelj, Alenka (author)

Direct viscous mechano-electric response is demonstrated for a room-temperature ferroelectric nematic liquid, which combines large spontaneous electric polarization with 3D fluidity. The mechano-electric transduction is observed in the frequency range 1−200 Hz via a simple demonstrator device. The liquid is placed into a deformable container with electrodes and the electric current induced by both periodic and irregular actuation of the container is examined. The experiments reveal a rich interplay of several distinct viscous mechano-electric phenomena, where both shape deformations and material flow cause changes in the electric polarization structure of a ferroelectric nematic liquid. The results show that the mechano-electric features of the material promise a considerable applicative perspective spanning from sensitive tactile sensors to energy harvesting devices.

• Language: English
• Keywords: ferroelectric materials, ferroelectric nematic liquid crystals, mechano-electric liquid, mechano-electric response
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FMF - Faculty of Mathematics and Physics
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 11 str.
• Numbering: Vol. 34, iss. 38, art. 2402554
• PID: 20.500.12556/RUL-162055
• UDC: 537
• ISSN on article: 1616-3028
• DOI: 10.1002/adfm.202402554
• COBISS.SI-ID: 196804611
• Publication date in RUL: 18.09.2024

Record is a part of a journal

• Title: Advanced functional materials
• Shortened title: Adv. funct. mater.
• Publisher: Wiley
• ISSN: 1616-3028
• COBISS.SI-ID: 23505413

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: mehanoelektrika, polarizacija