標題: Probing Local Electromechanical Effects in Highly Conductive Electrolytes
作者: Balke, Nina
Tselev, Alexander
Arruda, Thomas M.
Jesse, Stephen
Chu, Ying-Hao
Kalinin, Sergei V.
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: scanning probe microscopy;liquid;ferroelectrics;electromechanics;piezoresponse force microscopy
公開日期: 1-十一月-2012
摘要: The functionality of a variety of materials and devices is strongly coupled with electromechanical effects which can be used to characterize their functionality. Of high interest is the investigation of these electromechanical effects on the nanoscale which can be achieved by using scanning probe microscopy. Here, an electrical bias is applied locally to the scanning probe tip, and the mechanical sample response is detected. In some applications with electromechanical phenomena, such as energy storage or for biological samples, a liquid environment is required to provide full functionality and sample stability. However, electromechanical sample characterization has mostly been applied in air or under vacuum due to the difficulties of applying local electric fields in a conductive environment. Here, we present a detailed study of piezoresponse force microscopy of ferroelectric samples in liquid environments as a model system for electromechanical effects in general. The ionic strength of the liquid is varied, and possibilities and limitations of the technique are explored. Numerical simulations are used to explain the observed phenomena and used to suggest strategies to work in liquid environments with high ionic strength.
URI: http://dx.doi.org/10.1021/nn3038868
http://hdl.handle.net/11536/20880
ISSN: 1936-0851
DOI: 10.1021/nn3038868
期刊: ACS NANO
Volume: 6
Issue: 11
起始頁: 10139
結束頁: 10146
顯示於類別:期刊論文


文件中的檔案:

  1. 000311521700087.pdf