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Manufacturing technology of ion-selective electrodes (ISEs) for pH measurements is presented. Plasticized polyurethane membranes with tridodecylamine as a pH-selective ionophore were used as receptor layer, whereas electrodes printed with graphene nanoplatelets paste served as transducers. For preliminary experiments, sensors with screen-printed transducers and pH-selective membranes deposited manually or by direct-ink writing, were employed. However, the use of aerosol-jet printing (AJP) technique for the production of transducer as well as deposition of pH-selective polymeric membrane allowed substantial miniaturization of the sensors, leading to low-cost, automated fabrication of millimeter-scale ISEs. The pH sensors were printed on thermoplastic polyurethane (TPU) or polyethylene terephthalate (PET) substrate, the issues of compatibility of membrane and substrate materials were addressed. The average membrane thickness for the ISEs was 225.2 ± 8.0 μm with an additional 20 μm average thickness of other underlying printed layers. The planar dimensions of ISEs were 300 μm (width) by 2 mm, presenting an opportunity for even further miniaturization. Sensors fully printed with the AJP technique yielded a potentiometric response of −53.48 ± 4.26 mV/pH (N = 69) for PET substrate and − 46.71 ± 10.23 mV/pH (N = 66) for TPU substrate. Presented results are important for developing a fully operational electronic tattoo suitable for large-scale manufacturing.

The main aim of this article has to investigate some electro-optical properties of MoS2/p-Si heterojunctions fabricated by an innovative technique, AJP. For this purpose, MoS2 thin films of different thicknesses were deposited on corning glass and p-type Si substrates by using RF magnetron sputtering. The structural, morphological and optical properties of MoS2 films were analyzed by different characterization techniques. In addition, the electrical properties of heterojunction devices of MoS2/p-Si were examined by I-V measurements. Depending on the film thickness, localized states in the band gap region, which are explained by Urbach energy, electron–phonon interaction and steepness parameter analyses, were considered to be effective on device performance. It was observed that the fabricated MoS2/p-Si device with a thickness of 10 nm exhibited a higher rectification ratio and photovoltaic outputs. According to the obtained results, this study offers a new way to make better the performance of electro-optical devices based on MoS2. [ABSTRACT FROM AUTHOR]

"I don't know the question, but sex is definitely the answer!," was a Woody Allen quote cited by Fuller and Insel in an Editorial Comment in 2013 on the importance of cell sex in submissions to AJP-Cell Physiology, and in biomedical research in general. The notion that cell sex is important is axiomatic in studies on prostate cancer (LnCAP) or placental physiology (BeWo). Indeed, most researchers are aware that HeLa cells are female cervical derived, and CHO are female hamster ovary cells, yet beyond those wellknown examples, it would be fair to assume that the sex of cells derived from kidney, lung, or liver, for example, is given cursory, if any thought. In the end, what possible impact could the presence or absence of a Y chromosome have on protein trafficking in a nonreproductive tissue, such as a pancreatic β cell? However, this approach to cell, and indeed organismal physiology, seems to be in conflict with accumulating data, that show that far from being irrelevant, genes expressed off sex chromosomes have a broad-ranging impact on cells as diverse as neurons and renal cells. Moreover, it is also the policy of AJP-Cell Physiology that the source of all cells used (species, sex, etc.) should be clearly indicated when submitting an article for publication (https://journals.physiology.org/author-info.manuscript-composition). In 2013, we wrote a review examining how faithfully such requirements were adhered to in submissions to Cell Physiology. Nearly a decade later, it seems fitting to revisit the topic and ask if any improvements have been made in the description of cells and cell lines used in publications submitted to AJP-Cell Physiology. [ABSTRACT FROM AUTHOR]