Preparation and Characterization of Nanoporous Gold Film Based Surface Plasmon Resonance Sensor

WANG Li1,2 WAN Xiumei1,2 GAO Ran1 LU Danfeng1 QI Zhimei1

(1.Institute of Electronics, Chinese Academy of Sciences, Beijing, China 100190)
(2.University of Chinese Academy of Sciences, Beijing, China 100049)

【Abstract】Au-Ag alloy films of around 60 nm thickness are deposited on the slab glass substrate by radio frequency sputtering technique. Large-area uniform nanoporous gold films (NPGF) with strong adhesion are then fabricated by chemical dealloying of the alloy film at room temperature. The resonance spectrum in the visible-near infrared region for the NPGF exposed to air is obtained by a self-built broadband spectral surface plasmon resonance (SPR) detection platform. The Fresnel formula and Bruggeman dielectric constant approximation equation are used to fit the experimental results, resulting in the porosity of NPGF to be about 0.38. The response characteristics of the NPGF-SPR sensor to Pb2+ ions and melamine molecules adsorbed from the individual aqueous solutions with different concentrations are investigated. The experimental results show that the NPGF-SPR sensor can make obvious responses to both Pb2+ ions and melamine molecules in the aqueous solution with 1 nmol·L−1 concentration. The comparison experiment shows that the NPGF-SPR sensor is much more sensitive than the conventional SPR sensor with a dense gold layer.

【Keywords】 sensors; nanoporous gold film; surface plasmon resonance; porosity; high sensitivity;

【DOI】

【Funds】 National Basic Research Program of China (973 Program) (2015CB352100) National Natural Science Foundation of China (61377064, 61401432, 61401019, 61675203) Research Equipment Development Project of Chinese Academy of Sciences (YZ201508)

Download this article

(Translated by LIN LY)

    References

    [1] Zhang Z, Liu J, Qi Z M, et al. In situ study of selfassembled nanocomposite films by spectral SPR sensor [J]. Materials Science & Engineering C Materials for Biological Applications, 2015, 51: 242–247.

    [2] Kawazumi H, Gobi K V, Ogino K, et al. Compact surface plasmon resonance (SPR) immunosensor using multichannel for simultaneous detection of small molecule compounds [J]. Sensors and Actuators B: Chemical, 2005, 108 (1–2): 791–796.

    [3] Li J Y, Lu D F, Zhang Z, et al. Hierarchical mesoporous silica film modified near infrared SPR sensor with high sensitivities to small and large molecules [J]. Sensors and Actuators B: Chemical, 2014, 203 (21): 690–696.

    [4] Kim S J, Gobi K V, Iwasaka H, et al. Novel miniature SPR immunosensor equipped with all-in-one multi-microchannel sensor chip for detecting low-molecular-weight analytes [J]. Biosensors&Bioelectronics, 2007, 23 (5): 701–707.

    [5] Dostálek J, Homola J. SPR biosensors for environmental monitoring [M]. Berlin: Springer-Verlag, 2005: 191–206.

    [6] Sun B S, Huang Z H, Wang X P, et al. Intensitymodulated surface plasmon resonance array sensor based on polarization control [J]. Acta Optica Sinica, 2011, 31 (3): 0312003 (in Chinese).

    [7] Wang Y J, Zhang C L, Wang R, et al. Extracting phase information of surface plasmon resonance imaging system [J]. Acta Optica Sinica, 2013, 33 (5): 0524001 (in Chinese).

    [8] Hodnik V, Anderluh G. Toxin detection by surface plasmon resonance [J]. Sensors (Basel) , 2009, 9 (3): 1339–1354.

    [9] Gobi K V, Kim S J, Tanaka H, et al. Novel surface plasmon resonance (SPR) immunosensor based on monomolecular layer of physically-adsorbed ovalbumin conjugate for detection of 2, 4-dichlorophenoxyacetic acid and atomic force microscopy study [J]. Sensors and Actuators B: Chemical, 2007, 123 (1): 583–593.

    [10] Koutsioubas A G, Spiliopoulos N, Anastassopoulos D, et al. Nanoporous alumina enhanced surface plasmon resonance sensors [J]. Journal of Applied Physics, 2008, 103 (9): 094521.

    [11] Evans C R, Spurlin T A, Frey B L. In situ FT-IR measurements of competitive vapor adsorption into porous thin films containing silica nanoparticles [J]. Analytical Chemistry, 2002, 74 (5): 1157–1164.

    [12] Berrier A, Offermans P, Cools R, et al. Enhancing the gas sensitivity of surface plasmon resonance with a nanoporous silica matrix [J]. Sensors and Actuators B: Chemical, 2011, 160 (1): 181–188.

    [13] Hoa X D, Kirk A G, Tabrizian M. Towards integrated and sensitive surface plasmon resonance biosensors: a review of recent progress [J]. Biosensors & Bioelectronics, 2007, 23 (2): 151–160.

    [14] Yu F, Ahl S, Caminade A, et al. Simultaneous excitation of propagating and localized surface plasmon resonance in nanoporous gold membranes [J]. Analytical Chemistry, 2006, 78 (20): 7346–7350.

    [15] Zhang Z, Lu D F, Qi Z M. Surface plasmon resonance sensing properties of nanoporous gold thin films [J]. Acta Phys-Chim Sin, 2013, 29 (4): 867–873 (in Chinese).

    [16] Bao L, Sheng P T, Li J, et al. Surface enhanced Raman spectroscopic detection of polycyclic aromatic hydrocarbons (PAHs) using a gold nanoparticlesmodified alginate gel network [J]. Analyst, 2012, 137 (17): 4010–4015.

    [17] Abraham A, Mihaliuk E, Kumar B, et al. Solid-state NMR study of cysteine on gold nanoparticles [J]. Journal of Physical Chemistry C, 2010, 114 (42): 18109–18114.

    [18] Seker E, Reed M L, Begley M R. Nanoporous gold: fabrication, characterization, and applications [J]. Materials, 2009, 2 (4): 2188–2215.

    [19] Qi Z M, Honma I, Zhou H. Tin-diffused glass slab waveguides locally covered with tapered thin TiO2 films for application as a polarimetric interference sensor with an improved performance [J]. Analytical Chemistry, 2005, 77 (4): 1163–1166.

This Article

ISSN:0253-2239

CN:31-1252/O4

Vol 38, No. 02, Pages 371-376

February 2018

Downloads:1

Share
Article Outline

Abstract

  • 1 Introduction
  • 2 Experiment
  • 3 Results and discussion
  • 4 Conclusions
  • References