Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

1.4K
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
1.4K
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

690
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
690
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

5.9K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.9K
Potentiometry: Types of Electrodes01:19

Potentiometry: Types of Electrodes

1.9K
Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
1.9K
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

1.6K
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
1.6K
Standard Electrode Potentials03:02

Standard Electrode Potentials

49.8K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
49.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Aluminum-doped gallium sulfide shell for enhancing the luminescence properties of Ag-In-Ga-S core quantum dots and their composite for dye adsorption.

RSC advances·2026
Same author

Development of a Tannic Acid-Gelatin Modified Filter Paper Membrane for Trace Lead Detection in Water.

ACS omega·2026
Same author

Integrating monolithic sorbent micro-solid-phase extraction with anodized screen-printed graphene electrode for serotonin neurotransmitter detection in the presence of ascorbic acid and uric acid.

Mikrochimica acta·2026
Same author

Dynamical Behavior and Local Interactions in a Binary Mixture between Room-Temperature Ionic Liquid and Organic Solvent.

ACS omega·2026
Same author

Infrared FEL-Induced Alteration of Zeta Potential in Electrochemically Grown Quantum Dots: Insights into Ion Modification.

Nanomaterials (Basel, Switzerland)·2025
Same author

Green disposable rGO/MoS<sub>2</sub> sensor for ceftriaxone detection in surface water.

Chemosphere·2025

Related Experiment Video

Updated: Jan 13, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
12:00

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

14.5K

Structure-function correlations in graphene screen-printed electrodes: capacitive and faradaic behaviour.

Tharinda Kasemphong1, Monchai Jitvisate2, Chanida Jakkrawhad1

  • 1School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand. kamonwad@g.sut.ac.th.

Physical Chemistry Chemical Physics : PCCP
|January 6, 2026
PubMed
Summary
This summary is machine-generated.

Graphene origin impacts screen-printed electrode interfaces. Surface chemistry, not morphology, dictates potential, while capacitance relates to wetting and porosity, guiding precursor selection for applications.

More Related Videos

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

3.7K
Development of a 3D Graphene Electrode Dielectrophoretic Device
11:15

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

12.4K

Related Experiment Videos

Last Updated: Jan 13, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
12:00

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

14.5K
Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

3.7K
Development of a 3D Graphene Electrode Dielectrophoretic Device
11:15

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

12.4K

Area of Science:

  • Electrochemistry
  • Materials Science
  • Surface Science

Background:

  • The influence of graphene origin on interfacial behavior in screen-printed electrodes remains poorly understood.
  • Graphene's diverse fabrication methods lead to varied physical and chemical properties.

Purpose of the Study:

  • To investigate how different graphene origins affect interfacial electrochemical properties of screen-printed electrodes.
  • To correlate interfacial metrics with physical characteristics for optimized graphene precursor selection.

Main Methods:

  • Fabrication of four types of graphene screen-printed electrodes (commercial, combustion-derived, exfoliated, CVD-grown) using a standardized ink and printing protocol.
  • Application of conventional electroanalysis and step-potential electrochemical spectroscopy to determine differential capacitance (C(E)) and charging timescales (τ).
  • Evaluation of heterogeneous electron transfer kinetics for a redox couple ([Fe(CN)6]4-/3-) to probe faradaic processes.

Main Results:

  • All electrodes exhibited similar point zero charge (PZC) potentials (0.35-0.40 V vs. Ag/AgCl), primarily governed by surface chemistry and electronic structure.
  • Double-layer capacitance (Cdl) correlated with electrode wetting and mesoporosity.
  • Charging timescales (τ) were consistent (15-25 ms) and influenced by the balance between ionic access resistance and capacitance.
  • Heterogeneous electron transfer rates (k0) were dependent on edge, defect, and oxygen functionalities, rather than film conductivity, with values ranging from (0.76-1.99) × 10^-5 m s^-1.

Conclusions:

  • Interfacial electrochemical properties (capacitive and faradaic) of graphene screen-printed electrodes are directly linked to physical features like porosity, defect density, and surface chemistry.
  • These findings offer initial criteria for selecting appropriate graphene precursors based on desired interfacial characteristics for applications in sensing, catalysis, and energy storage.