Screen-printed electrode (SPE) modified with carbon black nanoparticles (CB) has been tested as a new platform for the stable deposition of caffeic acid (CFA) on the electrode surface. The electrochemical performance from varying the amount of CFA/CB composite has been tested with respect to NADH determination. The electrocatalytic activity of CFA/CB has also been compared with that of SPEs mod...

Fabrication and electrochemical characterization of disposable working electrodes/transducers of electrochemical sensors is described in this work. The aim was to find the best electrochemical properties of screen-printed electrode substrates modified with multiwalled carbon nanotubes (MWCNTs) based active layers. Two types of platinum electrode contacts were investigated and the suitable thick...

A 0.5 Vrms, 12 W wirelessly powered patch type fabric sensor is presented for wearable body sensor network to continuously monitor personal bioelectric signals. Thick film electrodes are screen printed on the fabric with various metal components and their impedances of ~100k are characterized. A 2-stage nested chopped analog readout front end (AFE) is optimized for the fabric sensor with reduce...

The promising advantages of Prussian Blue (PB) as catalyst and of the thick film screen printing technology have been combined to assemble sensors with improved characteristics for the amperometric determination of H(2)O(2). PB-modified screen printed electrodes were applied to detect H(2)O(2) at an applied potential of -0.05 V versus the internal screen printed Ag pseudoreference electrode, sh...

From the bench-mark work on microfluidics from the Whitesides's group in 2007, paper technology has experienced significant growth, particularly regarding applications in biomedical research and clinical diagnostics. Besides the structural properties supporting microfluidics, other advantageous features of paper materials, including their versatility, disposability and low cost, show off the gr...

This work presents the development and validation of an electroanalytical method for Pb(II) determination in a single drop. The electrochemical sensors used were unmodified screen-printed electrode (SPE) Bi-film SPE (BiFSPE). Anodic square wave stripping voltammetry (SWASV) was performed at accumulation potential −1.5 V vs. Ag/AgCl time 60 s. Electroanalysis with did not yield satisfactory resu...

Background: Diazepam belongs to the group of 1,4-benzodiapines. It is used for treatment anxiety, convulsions and as muscle relaxants. The presence a 4,5-azomethine enables its electrochemical detection. Introduction: A screen-printed electrode modified with antimony film was determination diazepam in pharmaceutical preparations Methods: Electrode modification done by ex-situ deposition on comm...

This work presents a new additive manufacturing electrochemical device with conductive graphene and polylactic acid (PLA) filament its application for epinephrine sensing. A three-electrode configuration based on screen-printed electrode architecture an easy-to-connect connector was designed. The sensor surface chemically treated dimethylformamide (DMF) to remove the insulating thermoplastic ex...