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Related Experiment Video

Updated: Jan 20, 2026

Niobium Oxide Films Deposited by Reactive Sputtering: Effect of Oxygen Flow Rate
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Structure-Function Correlations in Sputter Deposited Gold/Fluorocarbon Multilayers for Tuning Optical Response.

Pallavi Pandit1, Matthias Schwartzkopf2, André Rothkirch2

  • 1Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, D-22607 Hamburg, Germany. pallavi.pandit@desy.de.

Nanomaterials (Basel, Switzerland)
|September 6, 2019
PubMed
Summary

This study details nanoengineering gold/fluorocarbon multilayer nanostructures, revealing how gold nanoparticle size and shape evolve with temperature and time. These findings enable controlled optical properties for advanced material applications.

Keywords:
GISAXSGIWAXSUV-Visindirect band gapmetal–polymer interfacemultilayernanocompositestructure–function correlation

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Science

Background:

  • Gold/fluorocarbon multilayer (ML) nanostructures are crucial for optical applications.
  • Understanding metal-polymer interface morphology and nanoparticle (NP) growth kinetics is essential for controlling material properties.

Purpose of the Study:

  • To investigate morphological changes at the gold-polymer interface in ML nanostructures.
  • To study the kinetic growth of nano-sized gold in plasma polymer fluorocarbon (PPFC).
  • To identify fabrication and annealing conditions for controlling optical response.

Main Methods:

  • Fabrication of MLs with varying gold (Au) volume fractions.
  • Characterization using grazing incidence small-angle and wide-angle X-ray scattering (GISAXS and GIWAXS) at various temperatures and annealing times.
  • Optical characterization using UV-Vis spectroscopy.

Main Results:

  • Observed granular structure of nearly spherical gold NPs within the polymer layer.
  • NP morphology changes with temperature due to diffusion effects, leading to increased size and sphericity.
  • Diffusion-controlled NP growth demonstrated, with structural stability dependent on the Au/polymer volume ratio.
  • Local surface plasmon resonance (LSPR) shift was limited by controlling fabrication and annealing conditions.

Conclusions:

  • Nanoengineering of Au/PPFC MLs allows for systematic control over NP growth and morphology.
  • Temperature and annealing significantly influence NP size, shape, and diffusion kinetics.
  • Controlled LSPR shifts achieved, offering potential for tunable optical responses in nanostructures.