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

Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

316
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
316
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

343
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
343
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

289
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...
289
Voltammetry: Factors Affecting Measurements01:21

Voltammetry: Factors Affecting Measurements

211
A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...
211
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

58.5K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
58.5K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

524
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
524

You might also read

Related Articles

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

Sort by
Same author

The impact of physical-mental mixed fatigue on landing biomechanics inter-joint coordination and injury risk in elite American football players.

Frontiers in psychology·2026
Same author

Optimal dosage of exercise interventions for enhancing inhibitory control in overweight and obese children and adolescents: insights from a multilevel meta-analysis.

Frontiers in psychology·2026
Same author

Personalized Driven Instruction Through Explainable Agentic AI in Multicultural Higher Education Environments.

Big data·2026
Same author

Deep learning of pretreatment ascites cytopathology for platinum-resistance risk stratification in advanced epithelial ovarian cancer.

Neoplasia (New York, N.Y.)·2026
Same author

Prolactin-Releasing Hormone Receptor (PRLHR) enhances radiosensitivity and exacerbates DNA damage in glioblastoma post-irradiation by inhibiting Y-box-binding protein-1 (YBX1) nuclear translocation: a novel perspective on precision radiotherapy.

Molecular biomedicine·2026
Same author

Engineering an Extremely Hybrid PKS for Adipic Acid Production.

ACS synthetic biology·2026

Related Experiment Video

Updated: Sep 18, 2025

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.5K

Light field-controlled PHz currents in intrinsic metals.

Beatrix Fehér1, Václav Hanus1, Weiwei Li2,3

  • 1HUN-REN Wigner Research Centre for Physics, Konkoly Thege M. út 29-33, 1121 Budapest, Hungary.

Science Advances
|June 25, 2025
PubMed
Summary

Researchers demonstrate light-controlled electric currents in metals using ultrashort laser pulses. Metallic layers in a dielectric matrix significantly boost sensitivity, paving the way for low-energy, ultrafast lightwave electronics.

More Related Videos

X-ray Beam Induced Current Measurements for Multi-Modal X-ray Microscopy of Solar Cells
10:16

X-ray Beam Induced Current Measurements for Multi-Modal X-ray Microscopy of Solar Cells

Published on: August 20, 2019

14.0K
Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts
10:33

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

Published on: March 8, 2017

8.4K

Related Experiment Videos

Last Updated: Sep 18, 2025

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.5K
X-ray Beam Induced Current Measurements for Multi-Modal X-ray Microscopy of Solar Cells
10:16

X-ray Beam Induced Current Measurements for Multi-Modal X-ray Microscopy of Solar Cells

Published on: August 20, 2019

14.0K
Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts
10:33

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

Published on: March 8, 2017

8.4K

Area of Science:

  • Condensed matter physics
  • Materials science
  • Optoelectronics

Background:

  • Conventional electronics are limited by electron response times, despite electrons responding to electric fields within attoseconds.
  • Ultrashort laser pulses offer potential for petahertz-frequency electronic control, enabling light field-driven currents in various materials.
  • Existing research has shown light field-driven currents in dielectrics, semiconductors, and topological insulators.

Purpose of the Study:

  • To investigate the possibility of driving and controlling significantly more charge carriers in metals using low-energy, picojoule-level pulses.
  • To explore the potential for ultrafast switching applications enabled by light field-driven currents in metallic systems.
  • To determine if metallic nanostructures can enhance the efficiency of light-induced current generation.

Main Methods:

  • Interaction of ultrashort laser pulses with nanometer-thick metallic layers.
  • Fabrication of metallic layers implanted within a dielectric matrix.
  • Measurement of light-induced electric currents and sensitivity enhancement.

Main Results:

  • Demonstrated the generation of light field-controlled electric currents in metallic layers.
  • Observed up to a 40-fold increase in sensitivity when metallic layers are embedded in a dielectric matrix compared to a bare dielectric.
  • Significantly decreased the intensity threshold required for lightwave electronics applications.

Conclusions:

  • Metallic nanostructures integrated into dielectric materials are highly effective for generating and controlling light-induced currents.
  • This approach substantially lowers the energy requirements for lightwave electronics, making ultrafast switching more feasible.
  • The findings open new avenues for developing next-generation electronic devices operating at unprecedented speeds.