Engineering biopolymer photonic lattices.
De Ferrari, Fabio.
2019
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Photonic
crystals have been object of extensive research, in particular, an increasing effort has
been dedicated in the investigation of optical structures based on biopolymers. The
ability to precisely control the lattice formation ad locally modulate the refractive
index enables the development of waveguides, lenses, optical filters and sensors, while
the adoption of biopolymers often provides ... read morea more environmentally friendly processing,
as well as better biocompatibility and biodegradability. Within the scope of this work,
regenerated silk fibroin is selected to develop complex three-dimensional lattices with
accurately tuned spectral response. The devices are fabricated with a process that
enabled precise control of the nanometer sized features over surfaces as large as tens
of centimeters square. The results from the optical characterization are compared with
numerical simulations that confirmed good agreement between the designed structure and
the fabricated lattice. These results pave the way for the development of complex
photonic devices with well- defined optical properties and compatible with living
materials.
Thesis (M.S.)--Tufts University, 2019.
Submitted to the Dept. of Biomedical Engineering.
Advisor: Fiorenzo Omenetto.
Committee: Mark Cronin-Golomb, and Tom Vandervelde.
Keywords: Biomedical engineering, and Optics.read less - ID:
- sx61f0671
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