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This paper presents a novel method to fabricate gold nano-particle (NP) coated PDMS waveguides for localized surface plasmon resonance (LSPR) detection of biosamples. In the presented method, PDMS optical waveguide is firstly cast in a Teflon tubing to form a cylindrical leaky waveguide structure. The de-molded PDMS optical waveguide is then modified with PDDA molecules and deposited a layer of 13...
Gold nanoparticles (AuNP) continue rising a strong interest for research and especially in the field of biosensors as attested by growing number of publications. One reason is that AuNP exhibit an optical response dominated by the localised surface plasmon resonance (LSPR) that is highly sensitive to the molecular environment. This paper describes the preparation of monodisperse supported AuNP and...
The research on the localized surface plasmon resonance (LSPR) sensors is one of the hottest issues in sensor technology fields. The LSPR sensors have obvious technology advantages in physical and chemical, especially biological detection and analysis. This review introduces the theoretical model, fabrication and application of LSPR sensors. Meanwhile, the future development and commercial views of...
We present a cost effective non-lithographic approach to fabricate metal nano-particles on an In0.2Ga0.8As quantum well (QW) structure. A highly ordered nano-hole array honeycomb structure is created using anodic oxidation of aluminium (Al). This structure provides a template for deposition of metal from which further processing yields metal nano-particles on a QW structure. We will compare how different...
A novel optical biosensor with gold surface bound silver nanoparticles has been constructed for detection of bio-molecules like antigen, antibody protein and DNA plasmid, which exhibited distinct optical properties of localized surface plasmon resonance (LSPR). The silver colloidal nanoparticles were prepared by using sodium borohydride reduction of silver nitrate and characterized by using UV-vis...
We successfully demonstrated a pattern formation of 60 nm gold nanoparticles using high productive combined technique of particle self-assembly and the assembled particle pattern transfer, and its availability for bio/chemical sensor with localized surface plasmon resonance (LSPR) of the patterned particles was verified. Dot and line patterns of nanoparticles were fabricated on a flexible PDMS substrate...
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