Periodical Microstructures Based on Novel Piezoelectric Material for Biomedical Applications

Abstract

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.

Biologically Compatible Lead-Free Piezoelectric Composite for Acoustophoresis Based Particle Manipulation Techniques

“…Sample Ba48 ( Figure 12 b) generated 410 mV, sample Ba90 ( Figure 12 c) generated 130 mV, and sample Ba140 ( Figure 12 d) generated 76 mV. Obtained experimental data showed significant results of lead-free piezoceramics comparing it with previous research related to the PZT ceramics [ 13 ], i.e., the difference of generated voltage is obvious compared to PZT based piezoceramics investigated in previous research, where PZT based piezoceramics generated from ≈1.4 to ≈3.5 mV [ 12 , 13 , 20 ]. The difference in results is also related to thickness of the samples, i.e., when thickness decreases its stiffness decreases too.…”

“…The first step in fabrication of BCZT elements was preparation of BCZT/PMMA slurry mixture in ratio 80:20, respectively. The ratio was chosen based on previous research related to the poly(methyl methacrylate) (PMMA) and its synthesis with other piezoceramic materials [ 20 ]. Further, thin film layers were formed via screen printing technique with four different mesh frames on copper (Cu) plates of 50 µm thicknesses and poled at an electric field of 10 MV m −1 .…”

Power Generation Technology Based on Piezoelectric Nanocomposite

“…Straipsnis ar jo dalys negali būti naudojami komerciniams tikslams. (Janusas et al 2015). Bendras bandinio storis buvo ~1,2 mm (2 pav.…”

“…Taip pat šiandienos visuomenėje yra tokių terpių, pavyzdžiui, 388 padengtas ant metalo ir džiovintas 100 o C temperatūroje 30 minučių (Janusas et al 2015). Bendras bandinio storis buvo ~1,2 mm (2 pav.…”

Active PZT Composite Microfluidic Channel for Bioparticle Manipulation

“…[5,6,7,8]. Initially, microchannels of such systems were fabricated in solid substrates (silicon, glass) [9,10,11,12,13], but with the development of novel plastic materials and their fabrication technologies, poly(methyl methacrylate) (PMMA), polystyrene (PS), polycarbonate (PC), and cyclic olefin copolymer (COC) started to be used due to their biocompatibility and more effective fabrication [12,14,15,16,17,18,19].…”