Mechanosensitive (MS) channels are universal cellular membrane pores. Bacterial MS channels, as typified by MS channel of small conductance (MscS) from Escherichia coli (EcMscS), release osmolytes under hypoosmotic conditions. MS channels are known to be ion selective to different extents, but the underlying mechanism remains poorly understood. Here we identify an anion-selective MscS channel f...

In this work, the stability, electrical conductivity, and versatility of graphite-based inks were taken advantage to fabricate a nitrate potentiometric sensor. One other key property that was exploited for design an ion-selective electrode hydrophobicity graphite. This prevented formation water layer between solid contact polymeric selective membrane. Moreover, given use printing technologies f...

Calibration-free coulometric determination of K+ ions was realized using an all-solid-state thin-layer laminated cell with a simple laminate structure. The fabricated consists Ag/AgCl electrode, plastic spacer for positioning the aqueous sample solution, organic ion-selective membrane, and conducting polymer/carbon electrode. An originally prepared conducting-polymer-dispersed ink cast on condu...

Abstract Although ion-selective membrane-based potentiometric sensors have already proved their analytical performance in several fields of life, applicability is still limited practice. Biodegradable, ionic additive-free, polylactic acid-based bulk electrode membrane matrix containing various environmentally friendly polyethylene glycol derivatives as plasticizer was developed for the first ti...

We present an approach to simulate ion’s drift and diffusion in chemical sensors based on ion-selective-membranes (ISMs) either ion-selective electrode structures or coupled field-effect transistors. The model is used analyze the sensitivity, selectivity, transient response of ISMs non-equilibrium conditions upon real-time concentration changes. Our simple implementation combines advanced featu...

A novel potentiometric ion-selective PVC membrane sensor for analysis of atorvastatin (AT) in pharmaceutical preparations based on atorvastatin-(tetraphenyl borate), (AT-(TPB)2) as sensing element, tetraphenyl borate as additive and tris-2-ethyl-hexyl phosphate (TOP) as plasticizer solvent was prepared. The electrode shows a good Nernestian response over the concentration range of 0.09–5586 µ...

Disposable devices for sensing biomarkers like Na+ ion in sweat was developed using UV-Ozone irradiated laser-induced graphene (LIG) based electrodes. Solid-state ion-selective electrodes (ISEs) sensitive to ions were fabricated by a two-step drop-coating process of polyvinyl chloride solution containing plasticizer, ionophore and ion-exchanger on LIG electrode. Hydrophobic hydrophilic transiti...