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

Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

2.7K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
2.7K

You might also read

Related Articles

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

Sort by
Same author

Phase behavior, self-assembly, and interfacial tension of a dynamically linked polymer blend.

The Journal of chemical physics·2026
Same author

Processing-Driven Control of the Properties of Polymer Grafted Nanoparticle Composites.

ACS nano·2026
Same author

Entropic and Enthalpic Control of Interfacial Nanoparticle Jamming in Immiscible Polymers.

ACS macro letters·2026
Same author

Microscopic Dynamics Controls Coupling and Cluster Formation in Brush Particle Solids.

Macromolecules·2026
Same author

Process-dependent hypersonic phonon dispersion of brush particle metamaterials.

Nanoscale·2026
Same author

Recyclable IPN Photocatalysts Supported by Polymer Matrices: From Soluble Copolymers to Core-Polymer Brush Shell Nanostructures.

Journal of the American Chemical Society·2026

Related Experiment Video

Updated: May 7, 2025

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

7.8K

Superdiffusive Thermal Transport in Polymer-Grafted Nanoparticle Melts.

Bohai Liu1, Mayank Jhalaria2, Eric Ruzicka3

  • 1Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, <a href="https://ror.org/03rc6as71">Tongji University</a>, Shanghai 20092, China.

Physical Review Letters
|January 3, 2025
PubMed
Summary

Anomalous thermal transport in 1D systems was studied in polymer-grafted nanoparticle melts. Researchers found superdiffusive heat conduction (α=1/2) in extended polymer chains, challenging previous theories.

More Related Videos

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels

Published on: September 8, 2016

10.2K
Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
12:07

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

13.3K

Related Experiment Videos

Last Updated: May 7, 2025

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

7.8K
Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels

Published on: September 8, 2016

10.2K
Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
12:07

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

13.3K

Area of Science:

  • Condensed Matter Physics
  • Polymer Science
  • Materials Science

Background:

  • One-dimensional systems exhibit anomalous thermal conduction, deviating from normal diffusion.
  • The exponent α in thermal conductivity scaling (κ∼L^α) has been a subject of long-standing debate.

Purpose of the Study:

  • To investigate anomalous thermal transport in polymer-grafted nanoparticle (GNP) melts.
  • To experimentally determine the exponent α in thermal conductivity scaling for GNP melts.
  • To explore the relationship between polymer chain conformation and thermal conductivity.

Main Methods:

  • Experimental measurement of thermal conductivity (κ) in GNP melts as a function of polymer chain length (N).
  • Analysis of thermal conductivity scaling with chain length (κ(N)).
  • Theoretical prediction of extensional free energy per polymer chain to correlate with conformation.

Main Results:

  • Thermal conductivity κ(N) decreases with N for long chains (N≥945) but unexpectedly increases for shorter chains (N<945), peaking near N∼945.
  • A maximum in extensional free energy per chain near N≈940 suggests a transition from extended to Gaussian-like polymer conformations.
  • For extended polymer chains (short N), thermal conductivity follows κ_p∼N_dry^(0.46±0.02), providing evidence for superdiffusive transport with α=1/2.

Conclusions:

  • Polymer-grafted nanoparticle melts serve as a model system for anomalous thermal transport.
  • The study provides experimental evidence for a novel class of superdiffusive thermal transport (α=1/2) in one-dimensional systems.
  • Polymer chain conformation significantly influences thermal conductivity in these nanomaterials.