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Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: (a) The cross section schematic diagram of a nanocapsule where a metallic Au nanowire serves as the core, a silica layer grown on the surface of the metal core support the Ag NPs growth and Ag NPs uniformly grow on the silica layer. (b) Side view scheme of a nanocapsule.

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: Scanning electron microscopy (SEM) images of (a) arrays of Au nanowires with an average length of 8.5 μm and diameter of 300 nm, (b) Au nanowire encapsulated by a 180 nm thick silica layer, and (c) SEM images of Au/silica nanocapsules coated with Ag NPs (the zoom-in images of Ag NPs are shown in Fig. 2.)

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: SEM images of nanocapsules fabricated at different conditions with reactant concentrations and volumes as: (a) AgNO3 (0.06 M, 350 μl): NH3•H2O (0.12 M, 175 μl), (b) AgNO3 (0.06 M, 400 μl): NH3•H2O (0.12 M, 200 μl), (c) AgNO3 (0.06 M, 500 μl): NH3•H2O (0.12 M, 250 μl), and (d) AgNO3 (0.06 M, 600 μl): NH3•H2O (0.12 M, 300 μl)

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: Raman detection from nanocapsules in 100 μM R-6 G suspension. (a) Well repeatable Raman signals from nanocapsules synthesized in the same batch with volumes of AgNO3 and NH3•H2O as 500 μl: 250 μl. (b) Comparison of Raman signals from samples fabricated at different conditions with volumes of AgNO3 and NH3•H2O as 400 μl: 200 μl (black) 500 μl: 250 μl (red), and 600:300 μl (blue).

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: (a) Schematic diagram of nanocapsules assembled on interdigital microelectrodes, (b) the attraction of molecule to the nanocapsules with the electric fields, (c) Raman image of Nile blue molecules (with background fluorescence of Nile blue molecules and Ag NPs) on arrays of assembled nanocapsules on microelectrodes (enhanced image), and (d) the corresponding optical microscopy image

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: (a) Raman spectrum of Nile blue (250 nM) detected from a nanocapsule in solution, which demonstrated that 595 cm−1 was the most prominent Raman peak and well separated from others. (b) Frequency dependent Raman intensity enhancement at 595 cm−1 of Nile blue molecules (100 nM) recorded after applying an electric field at 20 V and 200 kHz to 1 MHz (the curve in orange is an eye guide.)

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: Time dependent Raman intensity at 595 cm−1 of Nile blue molecules (100 nM) recorded before and after applying an electric field at 200 kHz (a) 5 V, (b) 10 V, (c) 15 V, and (d) 20 V

Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Electric-Field Enhanced Molecule Detection in Suspension on Assembled Plasmonic Arrays by Raman Spectroscopy J. Nanotechnol. Eng. Med. 2014;5(4):040906-040906-6. doi:10.1115/1.4030769 Figure Legend: Time dependent Raman intensity of Nile blue molecules (100 nM) at 595 cm−1 recorded when the E-field is turned on and off alternatively at 20 V, 200 kHz