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 Experiment Videos

Nanometer-resolved interfacial fluidity.

Richard C Bell1, Hanfu Wang, Martin J Iedema

  • 1Pacific Northwest National Laboratory, P.O. Box 999, M/S K8-88, Richland, Washington 99352, USA.

Journal of the American Chemical Society
|April 24, 2003
PubMed
Summary
This summary is machine-generated.

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

Bimodal Thermoelectric/AIE E-Skin Decouples Contact-Area Ambiguity for Concurrent Pain Perception and Injury Mapping.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

From emotional dysregulation to violence: Psychological pathways associated with aggressive behavior.

Journal of affective disorders·2026
Same author

Flourine-18 Prostate-Specific Membrane Antigen-1007 Positron Emission Tomography Imaging in Staging of Primary and Secondary Prostate Cancer-A Retrospective Observational Cohort Study.

JU open plus·2026
Same author

Unique modulation effects on the performance of graphene-based ammonia sensors <i>via</i> ultrathin bimetallic Au/Pt layers and gate voltages.

Physical chemistry chemical physics : PCCP·2023
Same author

Unveiling the Roles of Trace Fe and F Co-doped into High-Ni Li-Rich Layered Oxides in Performance Improvement.

ACS applied materials & interfaces·2023
Same author

Enhanced Thermoelectric Properties of Bi<sub>2</sub> Te<sub>3</sub> -Based Micro-Nano Fibers via Thermal Drawing and Interfacial Engineering.

Advanced materials (Deerfield Beach, Fla.)·2022
Same journal

A Ni-Mediated Cross-Coupling Approach to Deuterated <sup>18</sup>F- Fluoromethylated (Hetero)arenes.

Journal of the American Chemical Society·2026
Same journal

Efficient Light-Driven CO<sub>2</sub> Capture and Reversible Release Enabled by Metastable Photoacid-Decorated Metal-Organic Frameworks.

Journal of the American Chemical Society·2026
Same journal

In Situ Raman Spectroscopy Reveals the Dynamic Evolution and Ethanol Dependence of SEI Structure in Li-Mediated N<sub>2</sub> Reduction Reaction.

Journal of the American Chemical Society·2026
Same journal

Solvent Esterification and Stoichiometric Control in Ambient-Grown FAPbI<sub>3</sub> Single-Crystal Solar Cells.

Journal of the American Chemical Society·2026
Same journal

Unlocking Azulene Functionalization via Strain-Induced Azulyne Intermediates.

Journal of the American Chemical Society·2026
Same journal

An Oxazine-Locked Covalent Organic Framework by a Tandem Pinner/Schiff Base Reaction for Hydrogen Peroxide Photosynthesis.

Journal of the American Chemical Society·2026
See all related articles

Confined liquids exhibit altered properties. This study reveals nanoscale changes in 3-methylpentane (3MP) film viscosity at interfaces, finding lower viscosity at the vacuum interface and higher viscosity at the metal interface.

Area of Science:

  • Physical Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Confined liquids display unique properties deviating from bulk behavior.
  • Understanding nanoscale perturbations at interfaces is crucial for materials science.

Purpose of the Study:

  • To resolve nanoscale perturbations in fluidity of confined 3-methylpentane (3MP) films.
  • To investigate how interfaces affect viscosity compared to bulk properties.

Main Methods:

  • Fabrication of amorphous 3MP films using molecular beam epitaxy on a Pt(111) substrate at low temperatures (<30 K).
  • Insertion of ions (D(3)O(+) or Cs(+)) at specific distances within the film.
  • Electrostatic monitoring of ion movement as a function of temperature (0.2 K/s heating rate).

Related Experiment Videos

Main Results:

  • Viscosity is significantly reduced at the vacuum-liquid interface and increased at the 3MP-metal interface.
  • Interface-induced viscosity changes extend approximately 3 nm into the film.
  • Ion movement, indicative of reduced viscosity, occurs near the vacuum interface at temperatures below the bulk glass transition temperature (77 K).

Conclusions:

  • The viscosity of confined 3MP is highly dependent on its proximity to interfaces.
  • The free interface dramatically lowers viscosity, while the metal interface increases it.
  • These findings challenge bulk predictions and highlight the importance of interfacial effects in glassy materials.