Local Charge Injection and Extraction on Surface-Modified Al2O3Nanoparticles in LDPE

• We use a recently developed scanning probe technique to image with high spatial resolution the injection and extraction of charge around individual surface-modified aluminum oxide nanoparticles embedded in a low-density polyethylene (LDPE) matrix. We find that the experimental results are consistent with a simple band structure model where localized electronic states are available in the band gap (trap states) in the vicinity of the nanoparticles. This work offers experimental support to a previously proposed mechanism for enhanced insulating properties of nanocomposite LDPE and provides a powerful experimental tool to further investigate such properties.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Nanoteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Nano-technology (hsv//eng)

Keyword

HVDC

intermodulation

KPFM

nanodielectrics

polyethylene nanocomposites

surface potential

Teknisk materialvetenskap

Materials Science and Engineering

Publication and Content Type

ref (subject category)

art (subject category)