Jove
Visualize
Contact Us

Related Experiment Videos

Interfacial water dielectric-permittivity-profile measurements using atomic force microscopy.

O Teschke1, G Ceotto, E F de Souza

  • 1Nano-Structures Laboratory, IFGW/UNICAMP, 13081-970, Campinas, São Paulo, Brazil.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|July 20, 2001
PubMed
Summary

Water molecules reorient near charged mica surfaces, forming layered structures. This study measured the dielectric permittivity profile, revealing distinct water arrangements at the interface using atomic force microscopy.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Determining the influence of Itaipu Lake on thermal conditions for soybean development in adjacent lands.

International journal of biometeorology·2015
Same author

Superhydrophobic polyethylcyanoacrylate coatings. Contact area with water measured by Raman spectral images, contact angle and Cassie-Baxter model.

Journal of colloid and interface science·2012
Same author

Nanotexturized polytetrafluoroethylene substrates formed by large crystalline nanofibrils in amorphous matrices.

Journal of nanoscience and nanotechnology·2008
Same author

Water molecule clusters measured at water/air interfaces using atomic force microscopy.

Physical chemistry chemical physics : PCCP·2005
Same author

Molecular arrangements of self-assembled surfactant films: characterization from atomic force microscopy data.

Physical review. E, Statistical, nonlinear, and soft matter physics·2003
Same author

Cellular automata model for citrus variegated chlorosis.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
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
  • Surface Science
  • Biophysics

Background:

  • Understanding water molecule arrangement at charged interfaces is crucial for biology, electrochemistry, and geochemistry.
  • Theoretical models predict layered water structures near solid interfaces.

Purpose of the Study:

  • To experimentally determine the dielectric permittivity profile of water perpendicular to charged mica surfaces.
  • To investigate the arrangement and orientation of water molecules at aqueous-solid interfaces.

Main Methods:

  • Utilized atomic force microscopy (AFM) to probe the interfacial region.
  • Measured the dielectric permittivity (ε) as a function of distance from the mica surface.

Main Results:

Related Experiment Videos

  • Observed a variable permittivity profile, starting at ε ≈ 4 near the interface.
  • The permittivity increased to ε = 80 at approximately 10 nm from the surface.
  • The data indicates a significant reorientation of water molecule dipoles.

    • Conclusions:

    • The study provides experimental evidence for layered water structures at charged mica interfaces.
    • Interfacial charge on mica induces water molecule dipole reorientation.
    • Findings have implications for understanding interfacial phenomena in various scientific disciplines.