Jove
Visualize
Contact Us

Related Experiment Videos

The Electrical Capacitance of Small Systems.

José A. Fornés1

  • 1Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás, 74001-970, Brazil

Journal of Colloid and Interface Science
|June 13, 2001
PubMed
Summary

This study calculates electrical capacitance for small systems using the fluctuation-dissipation theorem. This is crucial for understanding fluctuations in voltage, charge, and dipole moments in various physical systems.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same journal

Conquering the spatial-electronic dichotomy of MXene catalysts via surface-amorphized Mott-Schottky junctions for advanced lithium-sulfur batteries.

Journal of colloid and interface science·2026
Same journal

In-situ construction of Mn-doped RuTiO<sub>x</sub> nanoarray via template-directed replacement reaction for highly efficient and durable acidic oxygen evolution.

Journal of colloid and interface science·2026
Same journal

Hot-Electron-assisted *CO-*CHOH coupling enables selective CO<sub>2</sub>-to-C<sub>2</sub>H<sub>6</sub> Photoreduction on Plasmonic ZnIn<sub>2</sub>S<sub>4</sub>/W<sub>18</sub>O<sub>49</sub> S-scheme heterojunction interfaces.

Journal of colloid and interface science·2026
Same journal

Interfacially stabilized microfluidic core-shell cholesteric liquid-crystal droplets integrated with an electro-optical gate for sequential multilevel information encryption.

Journal of colloid and interface science·2026
Same journal

Transparent polypyrrole-nanocellulose hydrogel electrodes with durable skin adhesion for wearable ECG monitoring.

Journal of colloid and interface science·2026
Same journal

MoRu-integrated multiphase high-entropy electrocatalysts with surface reconstruction and multi-site synergy for enhanced alkaline hydrogen evolution.

Journal of colloid and interface science·2026
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

Area of Science:

  • * Physical Chemistry
  • * Colloid and Surface Science

Background:

  • * Electrical capacitance is a key property linking various physical fluctuations.
  • * Understanding capacitance is vital for characterizing colloidal and polyelectrolyte systems.
  • * Fluctuations in voltage, field, dipole moment, pH, and charge are related to capacitance.

Purpose of the Study:

  • * To determine the electrical capacitance of small systems.
  • * To apply the fluctuation-dissipation theorem in the classical limit for capacitance calculations.

Main Methods:

  • * Utilized the fluctuation-dissipation theorem.
  • * Calculations performed in the classical limit.

Main Results:

  • * Electrical capacitance for systems of 10-1000 Å ranges from 10-1000x10⁻¹⁸ F.
  • * Associated field and dipole moment fluctuations are on the order of 10⁴-10⁶ Vm and 10²-10⁴ D, respectively.

Conclusions:

  • * The fluctuation-dissipation theorem provides a method for estimating electrical capacitance in small systems.
  • * Capacitance estimation is essential for understanding physical properties of nanoscale systems.

Related Experiment Videos