Electromechanical and biological evaluations of 0.94BiNaTiO-0.06BaTiO as a lead-free piezoceramic for implantable bioelectronics.

Smart implantable electronic medical devices are being developed to deliver healthcare that is more connected, personalised, and precise. Many of these implantables rely on piezoceramics for sensing, communication, energy autonomy, and biological stimulation, but the piezoceramics with the strongest piezoelectric coefficients are almost exclusively lead-based. In this article, we evaluate the electromechanical and biological characteristics of a lead-free alternative, 0.

Factors Limiting the Apparent Hydrogen Flux in Asymmetric Tubular Cercer Membranes Based on LaWMoO and LaSrCrO.

Asymmetric tubular ceramic-ceramic (cercer) membranes based on LaWMoO-LaSrCrO were fabricated by a two-step firing method making use of water-based extrusion and dip-coating. The performance of the membranes was characterized by measuring the hydrogen permeation flux and water splitting with dry and wet sweep gases, respectively. To explore the limiting factors for hydrogen and oxygen transport in the asymmetric membrane architecture, the effect of different gas flows and switching the feed and sweep sides of the membrane on the apparent hydrogen permeability was investigated.

CO₂ Separation in Nanocomposite Membranes by the Addition of Amidine and Lactamide Functionalized POSS Nanoparticles into a PVA Layer.

In this article, we studied two different types of polyhedral oligomeric silsesquioxanes (POSS) functionalized nanoparticles as additives for nanocomposite membranes for CO₂ separation. One with amidine functionalization (Amidino POSS) and the second with amine and lactamide groups functionalization (Lactamide POSS). Composite membranes were produced by casting a polyvinyl alcohol (PVA) layer, containing either amidine or lactamide functionalized POSS nanoparticles, on a polysulfone (PSf) porous support.