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Hybridization of localized surface plasmon resonance-based Au-Ag nanoparticles.
Biomed Microdevices. 2009 Jun; 11(3):579-83.BM

Abstract

The hybrid Au-Ag triangular nanoparticles were proposed for the purpose of biosensing. To construct the nanoparticles, an Au thin film was deposited on top of the Ag nanoparticles supported with glass substrate. The hybrid nanoparticles can prevent oxidation of the pure Ag nanoparticles due to the Au protective layer caped on the Ag nanoparticles. The hybrid nanoparticles were designed using finite-difference and time-domain algorithm. Extinction spectra of the hybrid nanoparticles excited by visible light beam with plane wave were calculated, and the corresponding electric fields at peak position of the extinction spectra were expressed also. It is clear that the hybrid nanoparticles can excite the localized surface plasmon resonance wave which can be used to detect biomolecules. As an application example, we presented relevant detection results by means of using protein A to covalently link surface of the hybrid nanoparticles. Refractive index sensitivity of the hybrid nanoparticles was derived through both computational numerical calculation and experimental detection. Both the calculated and the experimental extinction spectra show that the hybrid Au-Ag nanoparticles are useful for detecting the biomolecules.

Authors+Show Affiliations

Photonics Centre, School of Electronic and Electrical Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore. slzhu@ntu.edu.sgNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19085108

Citation

Zhu, Shaoli, and Yongqi Fu. "Hybridization of Localized Surface Plasmon Resonance-based Au-Ag Nanoparticles." Biomedical Microdevices, vol. 11, no. 3, 2009, pp. 579-83.
Zhu S, Fu Y. Hybridization of localized surface plasmon resonance-based Au-Ag nanoparticles. Biomed Microdevices. 2009;11(3):579-83.
Zhu, S., & Fu, Y. (2009). Hybridization of localized surface plasmon resonance-based Au-Ag nanoparticles. Biomedical Microdevices, 11(3), 579-83. https://doi.org/10.1007/s10544-008-9267-3
Zhu S, Fu Y. Hybridization of Localized Surface Plasmon Resonance-based Au-Ag Nanoparticles. Biomed Microdevices. 2009;11(3):579-83. PubMed PMID: 19085108.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hybridization of localized surface plasmon resonance-based Au-Ag nanoparticles. AU - Zhu,Shaoli, AU - Fu,Yongqi, PY - 2008/12/17/entrez PY - 2008/12/17/pubmed PY - 2009/6/9/medline SP - 579 EP - 83 JF - Biomedical microdevices JO - Biomed Microdevices VL - 11 IS - 3 N2 - The hybrid Au-Ag triangular nanoparticles were proposed for the purpose of biosensing. To construct the nanoparticles, an Au thin film was deposited on top of the Ag nanoparticles supported with glass substrate. The hybrid nanoparticles can prevent oxidation of the pure Ag nanoparticles due to the Au protective layer caped on the Ag nanoparticles. The hybrid nanoparticles were designed using finite-difference and time-domain algorithm. Extinction spectra of the hybrid nanoparticles excited by visible light beam with plane wave were calculated, and the corresponding electric fields at peak position of the extinction spectra were expressed also. It is clear that the hybrid nanoparticles can excite the localized surface plasmon resonance wave which can be used to detect biomolecules. As an application example, we presented relevant detection results by means of using protein A to covalently link surface of the hybrid nanoparticles. Refractive index sensitivity of the hybrid nanoparticles was derived through both computational numerical calculation and experimental detection. Both the calculated and the experimental extinction spectra show that the hybrid Au-Ag nanoparticles are useful for detecting the biomolecules. SN - 1572-8781 UR - https://www.unboundmedicine.com/medline/citation/19085108/Hybridization_of_localized_surface_plasmon_resonance_based_Au_Ag_nanoparticles_ L2 - https://doi.org/10.1007/s10544-008-9267-3 DB - PRIME DP - Unbound Medicine ER -