Gold nanofingers for molecule trapping and detection. Academic Article uri icon


  • Here we demonstrate a molecular trap structure that can be formed to capture analyte molecules in solution for detection and identification. The structure is based on gold-coated nanoscale polymer fingers made by nanoimprinting technique. The nanofingers are flexible and their tips can be brought together to trap molecules, while at the same time the gold-coated fingertips form a reliable Raman hot spot for molecule detection and identification based on surface enhanced Raman spectroscopy (SERS). The molecule self-limiting gap size control between fingertips ensures ultimate SERS enhancement for sensitive molecule detection. Furthermore, these type of structures, resulting from top-down meeting self-assembly, can be generalized for other applications, such as plasmonics, meta-materials, and other nanophotonic systems.

published proceedings

  • J Am Chem Soc

altmetric score

  • 12

author list (cited authors)

  • Hu, M., Ou, F. S., Wu, W., Naumov, I., Li, X., Bratkovsky, A. M., Williams, R. S., & Li, Z.

citation count

  • 172

complete list of authors

  • Hu, Min||Ou, Fung Suong||Wu, Wei||Naumov, Ivan||Li, Xuema||Bratkovsky, Alexander M||Williams, R Stanley||Li, Zhiyong

publication date

  • September 2010