Periodical Microstructures Based on Novel Piezoelectric Material for Biomedical Applications

Sensors

Giedrius Janusas¹  Sigita Ponelyte¹  Alfredas Brunius¹  Asta Guobiene²  Igoris Prosycevas¹  Andrius Vilkauskas¹  Arvydas Palevicius¹ 

[1] Faculty of Mechanical Engineering and Design, Kaunas University of Technology; Studentu str. 56, Kaunas LT-51424, Lithuania;Institute of Materials Science, Kaunas University of Technology, Barsausko str. 59, Kaunas LT-51423, Lithuania;

关键词: PZT;    piezoelectric effect;    periodical microstructure;    SPR;   

DOI  :  10.3390/s151229876

来源: mdpi

【 摘 要 】

A novel cantilever type piezoelectric sensing element was developed. Cost-effective and simple fabrication design allows the use of this element for various applications in the areas of biomedicine, pharmacy, environmental analysis and biosensing. This paper proposes a novel piezoelectric composite material whose basic element is PZT and a sensing platform where this material was integrated. Results showed that a designed novel cantilever-type element is able to generate a voltage of up to 80 µV at 50 Hz frequency. To use this element for sensing purposes, a four micron periodical microstructure was imprinted. Silver nanoparticles were precipitated on the grating to increase the sensitivity of the designed element, i.e., Surface Plasmon Resonance (SPR) effect appears in the element. To tackle some issues (a lack of sensitivity, signal delays) the element must have certain electronic and optical properties. One possible solution, proposed in this paper, is a combination of piezoelectricity and SPR in a single element.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.