Integrating plasmonic nanostructures with natural photonic architectures in Pd-modified Morpho butterfly wings for sensitive hydrogen gas sensing.

ABSTRACT: This work reports a bioinspired three-dimensional (3D) heterogeneous structure for optical hydrogen gas (H₂) sensing. The structure was fabricated by selective modification of the photonic architectures of Morpho butterfly wing scales with Pd nanostrips. The coupling of the plasmonic mode of the Pd nanostrips with the optical resonant mode of the Morpho biophotonic architectures generated a sharp reflectance peak in the spectra of the Pd-modified butterfly wing, as well as enhancement of light-matter interaction in Pd nanostrips. Exposure to H₂ resulted in a rapid reversible increase in the reflectance of the Pd-modified butterfly wing, and the pronounced response of the reflectance was at the wavelength where the plasmonic mode strongly interplayed with

SUBMITTER: He J 

PROVIDER: S-EPMC9086169 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature