Jump to main content
Jump to site search

Issue 6, 2015
Previous Article Next Article

Silver nano-dendritic crystal film: a rapid dehydration SERS substrate of totally new concept

Author affiliations

Abstract

This work provides an improved new electroless galvanic deposition method to fabricate and assemble silver nano-dendritic crystals (SNDC) to be a uniform and flat film on most desired solid surfaces. This SNDC film is shown to be suitable as a new rapid dehydration surface enhanced Raman scattering (SERS) substrate, which overcomes the severely limited scope of existing SERS techniques in practical applications for solution detection. Scanning electron microscopy (SEM) characterization confirms that the SNDC film is composed of many layers of SNDCs in a stacked microcosmic structure. This structure provides the SNDC film with a large number of internal interspaces, and thus liquid can rapidly infiltrate into the SNDC film. The result of SERS mapping shows that a significant number of probe molecules are filtered out onto the silver SNDCs on the film surface. These characteristics indicate that the SNDC film can function as a molecular filter, which can conveniently separate probe molecules from the test specimen. The SERS spectra and mapping results have demonstrated a significant SERS enhancement and the excellent reproducibility of SNDCs, and are in close agreement with finite different time domain (FDTD) simulation. The combined effects of rapid water permeability, effective molecular filterability, dramatic SERS sensitivity improvement as well as reproducibility allow convenient, real-time SERS applications.

Graphical abstract: Silver nano-dendritic crystal film: a rapid dehydration SERS substrate of totally new concept

Back to tab navigation

Publication details

The article was received on 28 Sep 2014, accepted on 27 Nov 2014 and first published on 01 Dec 2014


Article type: Communication
DOI: 10.1039/C4RA11376D
Citation: RSC Adv., 2015,5, 4578-4585
  •   Request permissions

    Silver nano-dendritic crystal film: a rapid dehydration SERS substrate of totally new concept

    C. Feng, Y. Zhao and Y. Jiang, RSC Adv., 2015, 5, 4578
    DOI: 10.1039/C4RA11376D

Search articles by author

Spotlight

Advertisements