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REU Student Project:


Dale Karas
2011 U.S. Students
Advisor: Stephen Kuebler
"Characterizing Opto-Chemical Microfabrication and Electroless Copper Metallization and Deposition for Three- Dimensional Nanophotonic Crystalline Structures"
Metallized photonic microcrystalline structures, when configured in a distinctive lattice arrangement with periodic
band structures, illustrate novel optical properties; three-dimensional photonic crystals hold applications in
optimally configuring Microelectromechanical Systems (MEMS), Microfluidics & Microelectronics, and Pressure
& Inertial Sensors by taking advantage of quantum principles to manipulate their device operation. With the
pronounced application to polarization stability in vertical cavity surface-emitting lasers (VCSELs), optical data
storage, modulation of thin films, and configuration of solar cell arrays, the following experiment attempts to
determine the trial-by-design reliability and device efficacy of Photonic Crystals fabricated by Direct Laser
Writing, as well as improving the metallic plating configuration phases in the device construction. Modular
experimental yields are established in studying electroless copper deposition onto cross-linked polymer surfaces
by optimizing photonic crystal surface morphology, quality of aminated surface selectivity, and functional
synthesis of gold nanoparticles that can be used to seed electroless deposition of copper. Quantification of
experimental yields pursued include spectrophotometric and Fourier Transform Infrared Spectroscopic (FTIR)
determinations, atomic absorptivity and spectral reflectance for highlighting sample fluid dynamic properties, and
determined reliability confidence leveling via applied computer-aided behavioral and iterative modeling theory.  ...full text

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