Toward Wearable Cooling Devices: Highly Flexible Electrocaloric Ba0.67 Sr0.33 TiO3 Nanowire Arrays

Guangzu Zhang; Xiaoshan Zhang; Houbing Huang; Jianjun Wang; Qi Li; Long-Qing Chen; Qing Wang

doi:10.1002/adma.201506118

Toward Wearable Cooling Devices: Highly Flexible Electrocaloric Ba0.67 Sr0.33 TiO3 Nanowire Arrays

Adv Mater. 2016 Jun;28(24):4811-6. doi: 10.1002/adma.201506118. Epub 2016 Apr 27.

Authors

Guangzu Zhang¹, Xiaoshan Zhang¹, Houbing Huang¹, Jianjun Wang¹, Qi Li¹, Long-Qing Chen¹, Qing Wang¹

Affiliation

¹ Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania, 16802, USA.

PMID: 27120714
DOI: 10.1002/adma.201506118

Abstract

Flexible lead-free ferroelectric ceramic nanowire arrays exhibit a unique combination of features that can contribute to the realization of wearable cooling devices, including an outstanding electrocaloric effect at low fields, high efficiency, bendability and stretchability, and robustness against mechanical deformations. Thermodynamic and phase-field simulations are carried out to validate their superior electrocaloric effect in comparison to thin films.

Keywords: cooling; electrocaloric effect; ferroelectrics; flexible devices; nanowires.