Iron–Gold Barcode Nanowires

Lee, Ju Hun; Wu, Jun; Liu, Hong Ling; Cho, Ji Ung; Cho, Moon Kyu; An, Boo Hyun; Min, Ji Hyun; Noh, Su Jung; Kim, Young Keun

doi:10.1002/ange.200605136

Cited by 19 publications

(18 citation statements)

References 63 publications

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“…An enhanced intensity of the plasmon with less aggregation can be obtained when suitable dispersing solvent was used. In Au NWs, there is a minor shift in the absorbance band toward longer wavelengths at 660 and 770 nm, which can be attributed to shape the NWs and coupling between the Au NWs aggregation [21]. …”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

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

et al. 2011

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“…2(a) defines the area as framed in the bright field image for mapping, and Fig. 3(b), (c), (d) represent the TEM elemental mapping of Co, Pt and Au, respectively, manifesting the homogenous distribution of the three elements throughout the nanowire [14], [25], [28]. The irregular lateral shape of the nanowire may come from the deposition process and/or being aggravated from removing the AAO template.…”

Section: B Composition and Homogeneity Of The Nanowiresmentioning

confidence: 98%

“…The nominal compositions of the CoPtAu nanowires prepared under different current densities were investigated by TEM elemental mapping and linescan [14], [25], [28]. The data are summarized in Table I.…”

Section: B Composition and Homogeneity Of The Nanowiresmentioning

confidence: 99%

Growth and Magnetic Properties of CoPtAu Nanowires

Min

Kim

2008

IEEE Trans. Magn.

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We report the growth of CoPtAu nanowires by electrodeposition in nanoporous anodic aluminum oxide templates. The composition analysis and elemental mapping reveals that the nanowires are composed of Co, Pt and Au, which are homogenously distributed throughout the nanowires. Under the given deposition conditions, the nanowires were dominated by Pt and Au to form a cubic PtAu phase, with the existence of the CoPt tetragonal phase at higher current densities. The nanowires obtained at 3 and 5 mA cm 2 show ferromagnetic behavior and have an easy-axis parallel to the nanowire axis.

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“…As already mentioned, a combination of magnetic properties and optical responses represents materials with improved characteristics. Fe-Au barcoded nanowires were fabricated by Lee et al (2007) using AAO templates by pulse electrodeposition, thus forming alternate iron and gold segments. These barcoded nanowires possess magnetic properties with the easy axis aligned parallel to the nanowires' long axis as well as the optical response via the absorbance of light in the visible part of the spectrum dedicated to the Au segments of different lengths and shapes (Daniel and Astruc, 2004).…”

Section: Template-assisted Electrodeposition Of Magnetic (And Opticalmentioning

confidence: 99%

Functionalization of magnetic nanowires for biomedical applications

Rožman

2015

Magnetic Nano- And Microwires

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Iron–Gold Barcode Nanowires

Cited by 19 publications

References 63 publications

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

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

Growth and Magnetic Properties of CoPtAu Nanowires

Functionalization of magnetic nanowires for biomedical applications

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