Advanced Science· 2026Q1
Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals
- 0citations
- Q1SCImago
- 2026year
Short summary
Researchers quantitatively determined shear-mode direct piezoelectric coupling constants in ferroelectric nematic liquid crystals (RM734 and DIO) for the first time, revealing a mechanism driven by flow alignment of ferroelectric polarization.
AI-generated from the title and abstract; the full text is not read.
Key points
- Quantitatively determined shear-mode direct piezoelectric coupling constants in ferroelectric nematic liquid crystals (RM734 and DIO).
- Measurements involved periodic shear-induced electric current and oscillatory rheology.
- Results were analyzed based on temperature, frequency, and strain dependency.
- Proposed a physical mechanism involving flow alignment of ferroelectric polarization for the direct piezoelectric response.
AI-generated from the title and abstract; the full text is not read.
Abstract
ABSTRACT Piezoelectricity (linear coupling between mechanical deformation and electric signal) was originally observed only in solid crystals. Recently, it was discovered that liquid ferroelectric nematic liquid crystals are also piezoelectric. However, so far only their converse piezoelectric signals (applied voltage‐induced mechanical deformation) were measured quantitatively. In this work, we have carried out periodic shear‐induced electric current and oscillatory rheology measurements on the two archetypic ferroelectric nematic compounds, RM734 and DIO. From temperature, frequency and strain dependent results of the first and second harmonic current signals together with the results from oscillatory rheometry, we were able to quantitatively determine the shear‐mode direct piezoelectric coupling constants. These values are similar for both materials and are compared to results of previous converse piezoelectric measurements. We propose a physical mechanism in which the flow alignment of ferroelectric polarization leads to the direct piezoelectric response.
The authors' abstract, as published at the source. Advanced Science, 2026 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Electronic, Optical and Magnetic Materials
Electronic, Optical and Magnetic MaterialsMaterials Science