Tip-enhanced Raman spectroscopy: application to the study of single silicon nanowire and functionalized gold surface

Kazemi-Zanjani, Nastaran; Pashaee, Farshid; Lagugné‐Labarthet, François

doi:10.1117/12.981727

Cited by 1 publication

(3 citation statements)

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“…The three edges of the tetrahedral pyramid can clearly be distinguished; ( c ) Raman spectra of a nanocrystalline diamond tip coated with 20 nm of silver (adapted from [37]).…”

Section: Figurementioning

confidence: 99%

“… ( a ) Vertical deflection image of the nanocrystalline diamond tip and cantilever coated with a thin layer of titanium (5 nm) and silver (20 nm); ( b ) Raman intensity map of the same tip and cantilever. The three edges of the tetrahedral pyramid can clearly be distinguished; ( c ) Raman spectra of a nanocrystalline diamond tip coated with 20 nm of silver (adapted from [ 37 ]). …”

Section: Figurementioning

confidence: 99%

“… ( a ) AFM image of a single silicon nanowire and the topography cross section of the same nanowire. (Reproduced from [ 37 ]); ( b ) Total Raman signal when the metal tip is close to the sample. The full width at half maximum indicates a spatial resolution of ∼450 nm as compared to a topographical cross section of ∼300 nm as provided by the AFM.…”

Section: Figurementioning

confidence: 99%

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Tip-Enhanced Raman Imaging and Nano Spectroscopy of Etched Silicon Nanowires

Kazemi-Zanjani¹,

Kergrene²,

Liu³

et al. 2013

Sensors

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Tip-enhanced Raman spectroscopy (TERS) is used to investigate the influence of strains in isolated and overlapping silicon nanowires prepared by chemical etching of a (100) silicon wafer. An atomic force microscopy tip made of nanocrystalline diamond coated with a thin layer of silver is used in conjunction with an excitation wavelength of 532 nm in order to probe the first order optical phonon mode of the [100] silicon nanowires. The frequency shift and the broadening of the silicon first order phonon are analyzed and compared to the topographical measurements for distinct configuration of nanowires that are disposed in straight, bent or overlapping configuration over a microscope coverslip. The TERS spatial resolution is close to the topography provided by the nanocrystalline diamond tip and subtle spectral changes are observed for different nanowire configurations.

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“…The three edges of the tetrahedral pyramid can clearly be distinguished; ( c ) Raman spectra of a nanocrystalline diamond tip coated with 20 nm of silver (adapted from [37]).…”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%