Development of a Simple and Cheap Conductive Graphite Ink

Oliveira, Ana Elisa Ferreira; Pereira, Arnaldo César

doi:10.1149/1945-7111/ac1b02

Cited by 10 publications

(16 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To develop conductive inks, a compound with conductive characteristics must be dispersed in a polymeric medium that will be responsible for the adhesion to the substrate [ 4 , 14 ]. Polymeric compounds, such as shellac and nail polish, have been properly employed for this purpose [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. Nail polish [ 11 ] is a polymer that has proved to be excellent for the development of conductive inks, mainly because it is already developed to come into contact with nails without causing harm to human health.…”

Section: Introductionmentioning

confidence: 99%

Development of New Simple Compositions of Silver Inks for the Preparation of Pseudo-Reference Electrodes

Camargo

Fernandes-Junior

Azzi³

et al. 2022

Biosensors

View full text Add to dashboard Cite

Silver materials are known to present excellent properties, such as high electrical and thermal conductivity as well as chemical stability. Silver-based inks have drawn a lot of attention for being compatible with various substrates, which can be used in the production uniform and stable pseudo-reference electrodes with low curing temperatures. Furthermore, the interest in the use of disposable electrodes has been increasing due to the low cost and the possibility of their use in point-of-care and point-of-need situations. Thus, in this work, two new inks were developed using Ag as conductive material and colorless polymers (nail polish (NP) and shellac (SL)), and applied to different substrates (screen-printed electrodes, acetate sheets, and 3D-printed electrodes) to verify the performance of the proposed inks. Measurements attained with open circuit potential (OCP) attested to the stability of the potential of the pseudo-reference proposed for 1 h. Analytical curves for β-estradiol were also obtained using the devices prepared with the proposed inks as pseudo-references electrodes, which presented satisfactory results concerning the potential stability (RSD < 2.6%). These inks are simple to prepare and present great alternatives for the development of pseudo-reference electrodes useful in the construction of disposable electrochemical systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of New Simple Compositions of Silver Inks for the Preparation of Pseudo-Reference Electrodes

Camargo

Fernandes-Junior

Azzi³

et al. 2022

Biosensors

View full text Add to dashboard Cite

show abstract

“…Figure 15 a,b illustrate the process of fabricating the contact area. Initially, polyvinyl alcohol was dip-coated and dried, followed by a layer of nail polish, which served as an insulator [ 56 , 57 , 58 ]. A glass plate with a hole of φ100 μm was then pressed onto the coated Au hemisphere, creating a convex top area on the ball.…”

Section: Newly Developed Area-controlled Probementioning

confidence: 99%

Area-Controlled Soft Contact Probe: Non-Destructive Robust Electrical Contact with 2D and Fragile Materials

Yoshitake,

Omata,

Kanematsu

2024

Materials

View full text Add to dashboard Cite

We developed a soft contact probe capable of making electrical contact with a specimen without causing damage. This probe is now commercially available. However, the contact area with the probe changes according to the pressure applied during electric contact, potentially affecting electric measurements when current density or electric field strength is critical. To address this, we developed methods to control the area of electric contact. This article reports on these methods, as well as variations in probe size, pressure for electric contact, probe materials, and attachment to commercial probers.

show abstract

“…A scheme illustrating the steps involved in synthesis of each ink is presented in Figure 1. The optimization and characterization of these inks were already published [19,20].…”

Section: Synthesis Of the Conductive Inksmentioning

confidence: 99%

Fabrication of Low‐cost Screen‐printed Electrode in Paper Using Conductive Inks of Graphite and Silver/Silver Chloride

2022

Self Cite

View full text Add to dashboard Cite

The fabrication of the Screen‐Printed Electrode (SPE) was performed using the graphite ink to print the working (WE) and counter electrodes (CE), and silver/silver chloride path as reference electrode (RE). All the electrodes are printed in a paper substrate using screen‐printing technique. The resulting SPE is characterized using scanning electron microscopy, showing all the ink layer, and subsequently optimized. The paper sample presented the cellulose fibers entanglement, extremely rough, with highly porous network. Then the graphite ink was deposited and the surface became flat, thinner and very smooth. When the silver ink was painted on top of the graphite ink, the spherical silver particles, ranged from 2–3.5 μm in size, were observed. And finally, the silver ink was covered with a AgCl layer and the particle size becomes larger with an irregular sphere‐like phase. The images showed that the layers appear to be homogeneously distributed with good coverage. Then fabrication process was optimized concerning type of paper, the sanding process, the hydrophobic barrier, the electrode design and size. In summary, the optimized values included using the previously sanded matte paper with a mineral spirit layer. The design and size of the electrode were also tested to achieve the best electrochemical performance (design 3 with 3.5 cm). The final SPE was a miniaturized and flexible paper‐based electrochemical electrode. In order to evaluate the electrical properties, the ohmic resistance of each ink was tested using a multimeter and the obtained values were 2.18 kΩ for the graphite ink, 2.27 Ω for the silver ink and 38.33 kΩ for the silver/silver chloride ink. That can indicate the good conductivity of each ink used in the fabrication of the electrode and the correct deposition of Ag/AgCl. Finally, the electrode was used to measure the electrochemical response of K4[Fe(CN)6] in different concentrations. Then a calibration curve was obtained from the voltammograms and a linearity was observed between the current and concentration in the range of 0.50–2.00 mM. That indicates that the SPE has potential to be used as a voltammetric electrode.

show abstract

Development of a Simple and Cheap Conductive Graphite Ink

Cited by 10 publications

References 32 publications

Development of New Simple Compositions of Silver Inks for the Preparation of Pseudo-Reference Electrodes

Development of New Simple Compositions of Silver Inks for the Preparation of Pseudo-Reference Electrodes

Area-Controlled Soft Contact Probe: Non-Destructive Robust Electrical Contact with 2D and Fragile Materials

Fabrication of Low‐cost Screen‐printed Electrode in Paper Using Conductive Inks of Graphite and Silver/Silver Chloride

Contact Info

Product

Resources

About