Dielectric properties of ligand-modified gold nanoparticles/SU-8 photopolymer based nanocomposites

Anju Toor, Hongyun So, Albert P. Pisano

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


This article reports the enhanced dielectric properties of a photodefinable nanocomposite material containing sub–10 nm coated metal nanoparticles (NPs). The surface morphology of the synthesized dodecanethiol-functionalized gold NPs was characterized using the transmission electron microscopy (TEM). We investigated the particle agglomeration and dispersion during the various stages of the nanocomposite synthesis using TEM. Physical properties such as dielectric permittivity and dielectric loss were measured experimentally. The dependence of dielectric permittivity and loss tangent on particle concentration and frequency was studied. Nanocomposite films showed an approximately three times enhancement in average dielectric constant over the polymer base value and an average dielectric loss of 0.09 at 1 kHz, at a filler loading of 10% w/w.
Original languageEnglish (US)
Pages (from-to)373-379
Number of pages7
JournalApplied Surface Science
StatePublished - Apr 15 2017
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): 25478
Acknowledgements: This work was supported by King Abdullah University of Science and Technology (KAUST) under award number 25478. The authors would like to thank David Litt for helping in the gold nanoparticle synthesis and thank the staff of Biomolecular Nanotechnology Center (BNC) at the University of California, Berkeley where the material synthesis and characterization was done.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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