Next Article in Journal
VineSens: An Eco-Smart Decision-Support Viticulture System
Previous Article in Journal
Toward Exposing Timing-Based Probing Attacks in Web Applications
Article

SERS Taper-Fiber Nanoprobe Modified by Gold Nanoparticles Wrapped with Ultrathin Alumina Film by Atomic Layer Deposition

Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
*
Author to whom correspondence should be addressed.
Academic Editor: W. Rudolf Seitz
Sensors 2017, 17(3), 467; https://doi.org/10.3390/s17030467
Received: 6 January 2017 / Revised: 13 February 2017 / Accepted: 15 February 2017 / Published: 25 February 2017
(This article belongs to the Section Chemical Sensors)
A taper-fiber SERS nanoprobe modified by gold nanoparticles (Au-NPs) with ultrathin alumina layers was fabricated and its ability to perform remote Raman detection was demonstrated. The taper-fiber nanoprobe (TFNP) with a nanoscale tip size under 80 nm was made by heated pulling combined with the chemical etching method. The Au-NPs were deposited on the TFNP surface with the electrostatic self-assembly technology, and then the TFNP was wrapped with ultrathin alumina layers by the atomic layer deposition (ALD) technique. The results told us that with the increasing thickness of the alumina film, the Raman signals decreased. With approximately 1 nm alumina film, the remote detection limit for R6G aqueous solution reached 10−6 mol/L. View Full-Text
Keywords: taper-fiber nanoprobe; gold nanoparticles; atomic layer deposition; surface enhancement Raman spectroscopy taper-fiber nanoprobe; gold nanoparticles; atomic layer deposition; surface enhancement Raman spectroscopy
Show Figures

Figure 1

MDPI and ACS Style

Xu, W.; Chen, Z.; Chen, N.; Zhang, H.; Liu, S.; Hu, X.; Wen, J.; Wang, T. SERS Taper-Fiber Nanoprobe Modified by Gold Nanoparticles Wrapped with Ultrathin Alumina Film by Atomic Layer Deposition. Sensors 2017, 17, 467. https://doi.org/10.3390/s17030467

AMA Style

Xu W, Chen Z, Chen N, Zhang H, Liu S, Hu X, Wen J, Wang T. SERS Taper-Fiber Nanoprobe Modified by Gold Nanoparticles Wrapped with Ultrathin Alumina Film by Atomic Layer Deposition. Sensors. 2017; 17(3):467. https://doi.org/10.3390/s17030467

Chicago/Turabian Style

Xu, Wenjie, Zhenyi Chen, Na Chen, Heng Zhang, Shupeng Liu, Xinmao Hu, Jianxiang Wen, and Tingyun Wang. 2017. "SERS Taper-Fiber Nanoprobe Modified by Gold Nanoparticles Wrapped with Ultrathin Alumina Film by Atomic Layer Deposition" Sensors 17, no. 3: 467. https://doi.org/10.3390/s17030467

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop