Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
Opt Express. 2009 Nov 9;17(23):21271-9. doi: 10.1364/OE.17.021271.

Spectral analysis of induced color change on periodically nanopatterned silk films.

Author information

  • 1Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA 02155, USA.


We demonstrate controllable structural color based on periodic nanopatterned 2D lattices in pure protein films of silk fibroin. We show here periodic lattices in silk fibroin films with feature sizes of hundreds of nanometers that exhibit different colors as a function of varying lattice spacing. Further, when varying the index of refraction contrast between the nanopatterned lattice and its surrounding environment by applying liquids on top of the lattices, colorimetric shifts are observed. The effect is characterized experimentally and theoretically and a simple example of glucose concentration sensing is presented. This is the first example of a functional sensor based on silk fibroin optics.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk