The Experts below are selected from a list of 2700 Experts worldwide ranked by ideXlab platform
Zhaoming Wang - One of the best experts on this subject based on the ideXlab platform.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Guowen Meng, Qing Huang, Chuhong Zhu, Bensong Chen, Zhulin Huang, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Xiaoye Hu, Guowen Meng, Qing Huang, Bensong Chen, Zhulin Huang, Fadi Li, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
Robert M. Corn - One of the best experts on this subject based on the ideXlab platform.
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Lithographically Patterned Electrodeposition of Gold, Silver, and Nickel Nanoring Arrays with Widely Tunable Near-Infrared Plasmonic Resonances
2016Co-Authors: Aaron R Halpern, Robert M. CornAbstract:A novel low-cost nanoring array fabrication method that combines the process of lithographically patterned nanoscale electrodeposition (LPNE) with colloidal lithography is described. Nanoring array fabrication was accomplished in three steps: (i) a thin (70 nm) sacrificial nickel or silver film was first vapor-deposited onto a plasma-etched packed colloidal monolayer; (ii) the polymer colloids were removed from the surface, a thin film of positive photoresist was applied, and a backside exposure of the photoresist was used to create a nanohole electrode array; (iii) this array of nanoscale cylindrical electrodes was then used for the electrodeposition of gold, silver, or nickel Nanorings. Removal of the photoresist and sacrificial metal film yielded a nanoring array in which all of the nanoring dimensions were set independently: the inter-ring spacing was fixed by the colloidal radius, the radius of the Nanorings was controlled by the plasma etching process, and the width of the Nanorings was controlled by the electrodeposition process. A combination of scanning electron microscopy (SEM) measurements and Fourier transform near-infrared (FT-NIR) absorption spectroscopy were used to characterize the nanoring arrays. Nanoring arrays with radii from 200 to 400 nm exhibited a single strong NIR plasmonic resonance with an absorption maximum wavelength that varied linearly from 1.25 to 3.33 μm as predicted by a simple standing wave model linear antenna theory. This simple yet versatile nanoring array fabrication method was also used to electrodeposit concentric double gold nanoring arrays that exhibited multiple NIR plasmonic resonances
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lithographically patterned nanoscale electrodeposition of plasmonic bimetallic semiconductor magnetic and polymer nanoring arrays
Journal of Physical Chemistry C, 2014Co-Authors: Kyunghee Cho, Gabriel Loget, Robert M. CornAbstract:Large area arrays of magnetic, semiconducting, and insulating Nanorings were created by coupling colloidal lithography with nanoscale electrodeposition. This versatile nanoscale fabrication process allows for the independent tuning of the spacing, diameter, and width of the Nanorings with typical values of 1.0 μm, 750 nm, and 100 nm, respectively, and was used to form Nanorings from a host of materials: Ni, Co, bimetallic Ni/Au, CdSe, and polydopamine. These nanoring arrays have potential applications in memory storage, optical materials, and biosensing. A modified version of this nanoscale electrodeposition process was also used to create arrays of split gold Nanorings. The size of the split nanoring opening was controlled by the angle of photoresist exposure during the fabrication process and could be varied from 50% down to 10% of the ring circumference. The large area (cm2 scale) gold split nanoring array surfaces exhibited strong polarization-dependent plasmonic absorption bands for wavelengths from ...
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Gold Nanoring Arrays for Near Infrared Plasmonic Biosensing
Plasmonics, 2013Co-Authors: Mana Toma, Jennifer B. Wood, Robert M. CornAbstract:Gold nanoring array surfaces that exhibit strong localized surface plasmon resonances (LSPR) at near infrared (NIR) wavelengths from 1.1 to 1.6 μm were used as highly sensitive real-time refractive index biosensors. Arrays of gold Nanorings with tunable diameter, width, and spacing were created by the nanoscale electrodeposition of gold Nanorings onto lithographically patterned nanohole array conductive surfaces over large areas (square centimeters). The bulk refractive index sensitivity of the gold nanoring arrays was determined to be up to 3,780 cm−1/refractive index unit by monitoring shifts in the LSPR peak by FT-NIR transmittance spectroscopy measurements. As a first application, the surface polymerization reaction of dopamine to form polydopamine thin films on the nanoring sensor surface from aqueous solution was monitored with the real-time LSPR peak shift measurements. To demonstrate the utility of the gold nanoring arrays for LSPR biosensing, the hybridization adsorption of DNA-functionalized gold nanoparticles onto complementary DNA-functionalized gold nanoring arrays was monitored. The adsorption of DNA-modified gold nanoparticles onto nanoring arrays modified with mixed DNA monolayers that contained only 0.5 % complementary DNA was also detected; this relative surface coverage corresponds to the detection of DNA by hybridization adsorption from a 50 pM solution.
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lithographically patterned electrodeposition of gold silver and nickel nanoring arrays with widely tunable near infrared plasmonic resonances
ACS Nano, 2013Co-Authors: Aaron R Halpern, Robert M. CornAbstract:A novel low-cost nanoring array fabrication method that combines the process of lithographically patterned nanoscale electrodeposition (LPNE) with colloidal lithography is described. Nanoring array fabrication was accomplished in three steps: (i) a thin (70 nm) sacrificial nickel or silver film was first vapor-deposited onto a plasma-etched packed colloidal monolayer; (ii) the polymer colloids were removed from the surface, a thin film of positive photoresist was applied, and a backside exposure of the photoresist was used to create a nanohole electrode array; (iii) this array of nanoscale cylindrical electrodes was then used for the electrodeposition of gold, silver, or nickel Nanorings. Removal of the photoresist and sacrificial metal film yielded a nanoring array in which all of the nanoring dimensions were set independently: the inter-ring spacing was fixed by the colloidal radius, the radius of the Nanorings was controlled by the plasma etching process, and the width of the Nanorings was controlled b...
Guowen Meng - One of the best experts on this subject based on the ideXlab platform.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Guowen Meng, Qing Huang, Chuhong Zhu, Bensong Chen, Zhulin Huang, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Xiaoye Hu, Guowen Meng, Qing Huang, Bensong Chen, Zhulin Huang, Fadi Li, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
Qing Huang - One of the best experts on this subject based on the ideXlab platform.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Guowen Meng, Qing Huang, Chuhong Zhu, Bensong Chen, Zhulin Huang, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Xiaoye Hu, Guowen Meng, Qing Huang, Bensong Chen, Zhulin Huang, Fadi Li, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
Bensong Chen - One of the best experts on this subject based on the ideXlab platform.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Guowen Meng, Qing Huang, Chuhong Zhu, Bensong Chen, Zhulin Huang, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
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nano petri dish array assisted glancing angle sputtering for ag np assembled bi nanoring arrays as effective sers substrates
ACS Applied Materials & Interfaces, 2014Co-Authors: Xiaoye Hu, Guowen Meng, Qing Huang, Bensong Chen, Zhulin Huang, Fadi Li, Zhaoming WangAbstract:Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-Nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 × 10–12 M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 × 10–9 M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
