Scaling effect of flexoelectric (Ba,Sr)TiO3microcantilevers
Abstract
The flexoelectric microcantilever offers an alternative approach for the development of micro/nano‐sensors. The transverse flexoelectric coefficientsµ12of barium strontium titanate microcantilevers were measured at room temperature, and found to keep the same value of 8.5 µC/m for microcantilevers with thickness ranging from 30 µm to 1.4 mm. The calculated effective piezoelectric coefficient and electrical energy density of flexoelectric cantilevers are superior to those of their piezoelectric counterparts, suggesting that the flexoelectricity‐induced polarization can be significantly increased as structures are scaled down due to the scaling effect of strain gradient, holding promise for flexoelectric micro/nano cantilever sensing applications. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 04, 2011
- Source ID
- 10.1002/pssr.201105326
Entities
People
- Fuh‐gwo Yuan
- Kyungrim Kim
- Shujun Zhang
- Wenbin Huang
- Xiaoning Jiang
Organizations
- Army Research Office