The elastic properties of 0, 10, 15, and 20 mol% yttrium-doped barium zirconate (BZY0, BZY10, BZY15, BZY20) at the operating temperatures protonic ceramic fuel cells were evaluated. proposed measurement method for low sinterability materials could accurately determine sonic velocities small-pellet-type samples, determined based on these velocities. Young’s modulus BZY20 was 224, 218, 209 GPa °C...

This paper presents a method for monitoring biological tissue cauterization using the variation in the electromechanical impedance characteristics of the piezothermal heating elements used for tissue ablation. Piezoelectric ultrasonic heaters microfabricated from lead zirconate titanate (PZT) with 200 μm diameter and 100 μm thickness are embedded in a 20-gauge biopsy needle. A modified Butterwo...

This paper describes an acoustic trap consisting of a multi-foci Fresnel lens on 127 μm thick lead zirconate titanate sheet. The multi-foci Fresnel lens was designed to have similar working mechanism to an Axicon lens and generates an acoustic Bessel beam, and has negative axial radiation force capable of trapping one or more microparticle(s). The fabricated acoustic tweezers trapped lipid part...

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für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

This paper reports on conception, simulation, and fabrication of a lead zirconate titanate (PZT) MEMS cantilevers for piezoelectric energy harvesting (EH). We investigate the advantages of interdigitated electrode configurations (IDE) with respect to parallel-plate electrodes (PPE) in terms of output voltage and output power from the constitutive equations of piezoelectricity. Finite element mo...

We demonstrate that solid-state NMR spectra of challenging nuclei with a low gyromagnetic ratio such as yttrium-89 can be acquired quickly with indirect dynamic nuclear polarization (DNP) methods. Proton to (89)Y cross polarization (CP) magic angle spinning (MAS) spectra of Y(3+) in a frozen aqueous solution were acquired in minutes using the AMUPol biradical as a polarizing agent. Subsequently...

Lead Zirconate Titanate, PZT, layered into a composite with different materials, produces pre-stressed, curved, devices capable of enhanced displacement. This study focuses on Thunder and Lipca which are built using different combinations of constituent materials. Thunder devices consist of layers of aluminum, PZT, and stainless steel bonded with a hot-melt adhesive. Lipca devices consist of ca...