In situ assembled diffraction grating for biomolecular detection

Author

• Chun-Li Chang, Purdue UniversityFollow
• Ghanashyam Acharya, Purdue UniversityFollow
• Cagri Savran, Birck Nanotechnology Center and School of Mechanical Engineering, Purdue UniversityFollow

Abstract

The authors report experiments with a diffraction-based biosensor based on self-assembly of target-containing nanobeads that form optical diffraction gratings. They demonstrate that the diffraction signal is a function of the bead size, and that noise is minimized by normalizing the intensities of the diffraction modes. They characterize the dependence of the diffraction signal on equivalent bead size and demonstrate the potential of the scheme in detecting biologically significant molecules.

Citation

APPLIED PHYSICS LETTERS 90, 233901

Date of this Version

June 2007

Recommended Citation

Chang, Chun-Li; Acharya, Ghanashyam; and Savran, Cagri, "In situ assembled diffraction grating for biomolecular detection" (2007). Birck and NCN Publications. Paper 291.
https://docs.lib.purdue.edu/nanopub/291