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1 article(s) from Gucciardi, Pietro Giuseppe

Low cost tips for tip-enhanced Raman spectroscopy fabricated by two-step electrochemical etching of 125 µm diameter gold wires

Antonino Foti,
Francesco Barreca,
Enza Fazio,
Cristiano D’Andrea,
Paolo Matteini,
Onofrio Maria Maragò and
Pietro Giuseppe Gucciardi

Beilstein J. Nanotechnol. 2018, 9, 2718–2729, doi:10.3762/bjnano.9.254

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Figure 1: (a) Experimental setup. (b) Details of the tip immersion zone, highlighting the geometry and positi...

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Figure 2: Temporal evolution of the two step electrochemical etching process. (a) A meniscus is formed at the...

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Figure 3: (a) SEM images of a pilum-shaped tip with details shown in (b), (c) and (d) on the apical part, sho...

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Figure 4: (a) SEM image of a tip highlighting the dimensions of the tapered zones. The dashed lines are a con...

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Figure 5: (a) SEM image of an etched tip (t₁ = 20 s, V₁ = 5 V_DC, t₂ = 75 s, V₂ = 2.1 V_DC) and details on its ...

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Figure 6: (a) Sketch of the scanning configuration for the mapping of the light emitted by the tip. The tip i...

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Figure 7: TERS spectra (colored lines) of different molecules acquired with the tip in contact with the surfa...

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Figure 8: TERS signal of oligomers when the STM feedback loop is on (red line) and when it is off (black line...

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Figure 9: (a) STM image of Au(111) terraces on which R6G 10⁻⁴ M is adsorbed (∆V = 0.05 V – tip positive, curr...

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Figure 10: (a) TERS map and point spectra (b) acquired at the locations indicated with the labels 1, 2, 3, at ...

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Published 22 Oct 2018

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