Ferroelectric BaTiO Freestanding Sheets for an Ultra-High-Speed Light-Driven Actuator.

ACS Appl Mater Interfaces

Research Institute for Electronic Science, Hokkaido University, N20W10, Kita, Sapporo 001-0020, Japan.

Published: October 2024

Light-driven actuators convert optical energy into physical motion. Organic materials, commonly used in light-driven actuators thus far, suffer from two limitations: slow repetitive operation and the requirement of two different light sources. Herein, we report a high-speed, light-driven actuator that can be operated by a single light source with low-energy density. We achieved this breakthrough by utilizing a freestanding epitaxial sheet of ferroelectric BaTiO. One repetitive operation takes only 120 μs, which is 10 times faster than that of organic-based counterparts. The high-speed operation is derived from the light-induced nonthermal deformation provided by the excellent ferroelectricity (remnant polarization of 23 μC/cm) and piezoelectricity ( of 600 pm/V) of the sheet. The displacement-to-length ratio is achieved to be 3.7% with a relatively low laser power density (10200 mW/cm) compared to previously reports (15010 mW/cm). Furthermore, the actuator was operable even in water, demonstrating its potential in various applications.

Download full-text PDF

Source
http://dx.doi.org/10.1021/acsami.4c10044DOI Listing

Publication Analysis

Top Keywords

ferroelectric batio
8
light-driven actuator
8
light-driven actuators
8
repetitive operation
8
batio freestanding
4
freestanding sheets
4
sheets ultra-high-speed
4
light-driven
4
ultra-high-speed light-driven
4
actuator light-driven
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!