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2 article(s) from Yan, Yongda

Label-free highly sensitive probe detection with novel hierarchical SERS substrates fabricated by nanoindentation and chemical reaction methods

Jingran Zhang,
Tianqi Jia,
Yongda Yan,
Li Wang,
Peng Miao,
Yimin Han,
Xinming Zhang,
Guangfeng Shi,
Yanquan Geng,
Zhankun Weng,
Daniel Laipple and
Zuobin Wang

Beilstein J. Nanotechnol. 2019, 10, 2483–2496, doi:10.3762/bjnano.10.239

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Figure 1: SEM images of the arrayed triangular cavities with different feeds in AgNO₃ solution before and aft...

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Figure 2: SEM images of the arrayed triangular cavities with different feeds in AgNO₃ solution for 10 minutes...

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Figure 3: (a) SEM image of the arrayed triangular cavities with f_x = 2 μm, f_y = 2 μm in AgNO₃ solution after ...

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Figure 4: Weight percent of Ag for structures prepared with different feeds in the internal cavity (black squ...

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Figure 5: (a) SEM image of a single Ag/Cu pyramidal structure on the substrate with a feed of f_x = 10 μm, f_y ...

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Figure 6: (a) Raman spectrum of R6G molecules at 10⁻⁸ mol/L with different feeds, as defined in Table 1, on Ag/Cu su...

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Figure 7: Raman intensity mapping image of the arrayed Ag/Cu substrate with a feed of 5 μm in the x-direction...

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Figure 8: (a) Raman spectra of R6G molecules at 10⁻⁸mol/L with different feeds on Ag/Cu substrates with a cor...

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Figure 9: (a) Electric field distribution in the air of a Ag nanoparticle with radius of 100 nm. (b) Electric...

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Figure 10: (a) Electric field distribution of a single Ag nanoparticle with a radius of 100 nm on the pile-up ...

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Figure 11: (a) Raman spectra of MG molecules at 10⁻⁷mol/L on hierarchical SERS Ag/Cu substrates with a corrosi...

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Figure 12: Raman spectrum of MG molecules at different concentrations on Ag/Cu substrates.

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Figure 13: Schematic diagram of the hierarchical SERS substrate with Ag nanoparticles on the arrayed pyramidal...

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Full Research Paper

Published 13 Dec 2019

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Fabrication of gold-coated PDMS surfaces with arrayed triangular micro/nanopyramids for use as SERS substrates

Jingran Zhang,
Yongda Yan,
Peng Miao and
Jianxiong Cai

Beilstein J. Nanotechnol. 2017, 8, 2271–2282, doi:10.3762/bjnano.8.227

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Figure 1: Schematic of the SERS substrate basic fabrication process steps with close-packed, arrayed Au pyram...

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Figure 2: AFM images of cavities with different feed rates (a–d) (with f_x and f_y specified in the images) on ...

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Figure 3: Three-dimensional and sectional AFM images of (a) arrayed pyramids on a Cu(110) surface with f_x = 1...

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Figure 4: SEM image of the dimension of 500 × 500 μm² arrayed triangular cavities on the Cu (110) surface wit...

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Figure 5: Three-dimensional and sectional AFM images of (a) arrayed pyramids on the PDMS surface after nanoim...

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Figure 6: Raman spectra of R6G molecules on a structured PDMS substrate coated with a 10 nm thick gold film a...

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Figure 7: Three-dimensional and sectional AFM images of (a) arrayed pyramids on the PDMS surface after nanoim...

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Figure 8: Raman spectra of R6G molecules on the gold-coated PDMS substrate at a concentration of 10⁻⁶ M with ...

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Figure 9: Two-dimensional and sectional AFM images of arrayed pyramids on PDMS substrates (a) the first time ...

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Figure 10: AFM images of the gold films of (a) 10 nm (b) 50 nm thickness on PDMS substrates.

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Figure 11: (a) AFM image of the commercial Q-SERS substrate and an enlarged image of the local position. (b) R...

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Full Research Paper

Published 01 Nov 2017

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