Fabrication of Silver Decorated Anodic Aluminum Oxide Substrate and Its Optical Properties on Surface-Enhanced Raman Scattering and Thin Film Interference

Ji, Nan; Ruan, Weidong; Wang, Chunxu; Lü, Zhicheng; Zhao, Bing

doi:10.1021/la901521j

Cited by 101 publications

(64 citation statements)

References 25 publications

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“…A point-by-point SERS mapping of this analyte on the NAA platform was acquired to characterise the homogeneity of the adsorbed molecules. Ji et al [48] used a similar strategy to detect and characterise 4-mercaptopyridine on SERS-NAA platforms decorated with electrodeposited silver nanoparticles. Different deposition times were investigated in order to assess the homogeneity and stability of these SERS platforms.…”

Section: Optical Biosensors Based On Naamentioning

confidence: 99%

Nanoporous Anodic Alumina: A Versatile Platform for Optical Biosensors

2014

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Nanoporous anodic alumina (NAA) has become one of the most promising nanomaterials in optical biosensing as a result of its unique physical and chemical properties. Many studies have demonstrated the outstanding capabilities of NAA for developing optical biosensors in combination with different optical techniques. These results reveal that NAA is a promising alternative to other widely explored nanoporous platforms, such as porous silicon. This review is aimed at reporting on the recent advances and current stage of development of NAA-based optical biosensing devices. The different optical detection techniques, principles and concepts are described in detail along with relevant examples of optical biosensing devices using NAA sensing platforms. Furthermore, we summarise the performance of these devices and provide a future perspective on this promising research field.

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Section: Optical Biosensors Based On Naamentioning

confidence: 99%

Nanoporous Anodic Alumina: A Versatile Platform for Optical Biosensors

2014

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“…The optical properties of Au or Au stripes nanostructures [15], optical quenching [16], and the NW aggregation [17] have widely been reported, but the understanding of surface plasmon for multilayer NWs is still to be explored. Hence, it is important to study the shape of multilayer NWs that affects the surface plasmon [18,19], which is the key area to tune the optical properties of biobarcode in multiplex biolabeling applications.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical studies of DNA-tagged biomolecules on Au and Au/Ni/Au multilayer nanowires

et al. 2011

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The use of nanowires (NWs) for labeling, sensing, and sorting is the basis of detecting biomolecules attached on NWs by optical and magnetic properties. In spite of many advantages, the use of biomolecules-attached NWs sensing by photoelectrochemical (PEC) study is almost non-existent. In this article, the PEC study of dye-attached single-stranded DNA on Au NWs and Au-Ni-Au multilayer NWs prepared by pulse electrodeposition are investigated. Owing to quantum-quenching effect, the multilayer Au NWs exhibit low optical absorbance when compared with Au NWs. The tagged Au NWs show good fluorescence (emission) at 570 nm, indicating significant improvement in the reflectivity. Optimum results obtained for tagged Au NWs attached on functionalized carbon electrodes and its PEC behavior is also presented. A twofold enhancement in photocurrent is observed with an average dark current of 10 μA for Au NWs coated on functionalized sensing electrode. The importance of these PEC and optical studies provides an inexpensive and facile processing platform for Au NWs that may be suitable for biolabeling applications.

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“…As far as the different materials used to develop optical sensing platforms is concerned, nanomaterials have enabled the development of highly sensitive and sophisticated systems such as surface enhanced Raman spectroscopy (SERS), surface plasmon resonance spectroscopy (SPR), localized surface plasmon resonance spectroscopy (LSPR) and others. [6][7][8][9][10][11][12][13][14][15] These optical techniques can achieve detection limits as low as single molecules through the amplification of 3 electromagnetic fields generated by the excitation of localized surface plasmons. 16 Another example of sensitive optical technique extensively used to develop optical sensors is reflectometric interference spectroscopy (RIfS).…”

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confidence: 99%

Advanced Structural Engineering of Nanoporous Photonic Structures: Tailoring Nanopore Architecture to Enhance Sensing Properties

et al. 2014

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In this study, we demonstrate that an optimal design of the pore geometry and shape of sensing platforms based on nanoporous anodic alumina (NAA) photonic structures is critical to develop optical sensors with improved capabilities. To this end, two types of NAA photonic structures featuring different pore geometries (i.e., pore lengths and diameters) and shapes (i.e., straight and modulated pores) were produced, and their optical characteristics were assessed systematically by reflectometric interference spectroscopy. The geometric features (i.e., pore lengths, diameters, and shapes) were systematically modified in order to establish the optimization paths for the sensitivity, low limit of detection, and linearity of these optical sensing platforms. The obtained results reveal that an optimal design of these nanoporous photonic structures can enhance their sensitivity, achieve a lower limit of detection, and improve their linearity for both nonspecific and specific detection of analytes. Therefore, as this study demonstrates, the rational design of optical nanoporous sensing platforms is critical in the development of reliable, sensitive, robust, inexpensive, and portable optical systems for a broad range of sensing applications.

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Fabrication of Silver Decorated Anodic Aluminum Oxide Substrate and Its Optical Properties on Surface-Enhanced Raman Scattering and Thin Film Interference

Cited by 101 publications

References 25 publications

Nanoporous Anodic Alumina: A Versatile Platform for Optical Biosensors

Nanoporous Anodic Alumina: A Versatile Platform for Optical Biosensors

Photoelectrochemical studies of DNA-tagged biomolecules on Au and Au/Ni/Au multilayer nanowires

Advanced Structural Engineering of Nanoporous Photonic Structures: Tailoring Nanopore Architecture to Enhance Sensing Properties

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