Publications by authors named "Yun Yu Han"
Polymer dynamics near the surface and in the bulk of poly(tetrafluoroethylene) probed by zero-field muon-spin-relaxation spectroscopy.
Phys Rev E Stat Nonlin Soft Matter Phys
February 2014
Article Synopsis
- Research indicates that polymer chains near free surfaces show enhanced dynamics compared to those in the bulk.
- The study focused on poly(tetrafluoroethylene) (PTFE) using muon-spin-relaxation spectroscopy to observe the behavior of implanted muons.
- Results showed that muons implanted at low energy (2.0 keV) exhibited a higher relaxation rate at temperatures up to 150 K, suggesting increased mobility of polymer chains near the surface compared to the bulk material.