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

Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

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 the...
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential ensures...
Voltammetric Techniques: Linear-Scan (E vs Time)01:12

Voltammetric Techniques: Linear-Scan (E vs Time)

Polarography is a classical voltammetric technique used to analyze electrochemical reactions. This method applies a linear potential sweep to a dropping mercury electrode (DME), and the resulting current is measured. A dropping mercury electrode is commonly used as the working electrode in polarography. It consists of a capillary tube filled with mercury, where the tiny droplet forms at the tip. This droplet continuously drops from the capillary, creating a new electrode surface for each...

You might also read

Related Articles

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

Sort by
Same author

Discussion: Microbiology.

Journal of chemotherapy (Florence, Italy)·2016
Same author

Discussion: Clinical Studies in Children.

Journal of chemotherapy (Florence, Italy)·2016
Same author

Growth and structure of gold films on a Re([Formula: see text]) surface.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Enhanced sensory re-learning after nerve repair using 3D audio-visual signals and kinaesthesia--preliminary results.

Acta neurochirurgica. Supplement·2007
Same author

Generalized approach for accelerated maximum likelihood based image restoration applied to three-dimensional fluorescence microscopy.

Journal of microscopy·2001
Same author

Coexistence of atomic and molecular chemisorption states: H(2)/Pd(210).

Physical review letters·2001
Same journal

Fiber-optic triggering of a two-stage high-current linear transformer driver with laser energy below 100 μJ.

The Review of scientific instruments·2026
Same journal

Optimization of laboratory-scale x-ray absorption spectroscopy (XAS) apparatus for nuclear fuel research.

The Review of scientific instruments·2026
Same journal

Compressed multi-scale entropy and its application in mechanical fault diagnosis.

The Review of scientific instruments·2026
Same journal

Bidirectional drive and multi-resolution adjustment across frequency bands in inertial impact piezoelectric motors via multimodal resonant vibration.

The Review of scientific instruments·2026
Same journal

A magnetic field sensor based on flaky Terfenol-D material and dual fiber grating.

The Review of scientific instruments·2026
Same journal

A novel E-field eight-way cavity combiner for high-power S-band applications.

The Review of scientific instruments·2026
See all related articles

Related Experiment Video

Updated: Jul 2, 2026

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity
09:23

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Published on: May 17, 2024

Precise diode method for recording contact potential changes caused by gas adsorption.

K Christmann1, H Herz

  • 1Institut für Physikalische Chemie der Universität München, 8000 München 2, West Germany.

The Review of Scientific Instruments
|August 1, 1979
PubMed
Summary
This summary is machine-generated.

A novel low-temperature diode precisely measures adsorption-induced potential differences. This method reveals work function changes during hydrogen adsorption on platinum single crystals, showcasing its utility.

More Related Videos

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements
05:49

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements

Published on: December 2, 2022

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
10:28

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Related Experiment Videos

Last Updated: Jul 2, 2026

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity
09:23

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Published on: May 17, 2024

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements
05:49

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements

Published on: December 2, 2022

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
10:28

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Area of Science:

  • Surface Science
  • Physical Chemistry
  • Materials Science

Background:

  • Contact potential differences (CPDs) are crucial for understanding surface phenomena.
  • Accurate measurement of CPDs is essential for surface science research.
  • Adsorption processes significantly alter surface electronic properties.

Purpose of the Study:

  • To introduce a low-temperature recording diode for precise CPD measurements.
  • To demonstrate the method's capability in studying gas-surface interactions.
  • To present experimental work function data for hydrogen adsorption on platinum.

Main Methods:

  • Development and utilization of a low-temperature recording diode.
  • Measurement of adsorption-induced contact potential differences.
  • Experimental investigation of hydrogen adsorption on platinum (111) and (997) single-crystal surfaces.

Main Results:

  • The developed diode achieves an accuracy of better than 0.5 mV for CPD determination.
  • Significant changes in work function were observed during hydrogen adsorption on Pt surfaces.
  • The experimental results validate the effectiveness of the new measurement technique.

Conclusions:

  • The low-temperature diode is a valuable tool for surface science.
  • The method provides accurate insights into adsorption-induced electronic property changes.
  • This technique advances the study of gas-surface interactions on single-crystal metals.