scholarly journals Fabrication of Au and Ag – Coated AFM Probes for Tip-Enhanced Raman Spectroscopy

2021 ◽  
Vol 2015 (1) ◽  
pp. 012013
Author(s):  
L S Basalaeva ◽  
N N Kurus ◽  
E E Rodyakina ◽  
K V Anikin ◽  
A G Milekhin

Abstract In this work, approaches for fabrication metal coated probes for Tip Enhanced Raman Spectroscopy (TERS) are considered. It was proposed to use optical characterization of probes to achieve the effective TERS of semiconductor nanoobjects. The shape and size of the metal cluster at the tip apex determines the position of the localized surface plasmon resonance, the electromagnetic field enhancement and, thus, TERS performance. The possibility of optimizing the characteristics of the probes for TERS studies of nanoobjects has been investigated.

Author(s):  
Jiawei Zhang ◽  
Gitanjali Kolhatkar ◽  
Andreas Ruediger

The localized surface plasmon resonance (LSPR) position in tip-enhanced Raman spectroscopy (TERS) is of great importance to the understanding and interpretation of the relative intensity of different enhanced Raman modes....


2020 ◽  
Vol 28 (18) ◽  
pp. 25998
Author(s):  
Jiawei Zhang ◽  
Azza Hadj Youssef ◽  
Andreas Dörfler ◽  
Gitanjali Kolhatkar ◽  
Alexandre Merlen ◽  
...  

2010 ◽  
Vol 114 (8) ◽  
pp. 3346-3353 ◽  
Author(s):  
Sabine Szunerits ◽  
Slimane Ghodbane ◽  
Joanna Niedziółka-Jönsson ◽  
Elisabeth Galopin ◽  
Frederik Klauser ◽  
...  

Laser Physics ◽  
2016 ◽  
Vol 26 (4) ◽  
pp. 046001 ◽  
Author(s):  
S Firdous ◽  
S Anwar ◽  
A Waheed ◽  
M Maraj

2007 ◽  
Vol 61 (9) ◽  
pp. 994-1000 ◽  
Author(s):  
Alyson V. Whitney ◽  
Francesca Casadio ◽  
Richard P. Van Duyne

Silver film over nanospheres (AgFONs) were successfully employed as surface-enhanced Raman spectroscopy (SERS) substrates to characterize several artists' red dyes including: alizarin, purpurin, carminic acid, cochineal, and lac dye. Spectra were collected on sample volumes (1 × 10−6 M or 15 ng/μL) similar to those that would be found in a museum setting and were found to be higher in resolution and consistency than those collected on silver island films (AgIFs). In fact, to the best of the authors' knowledge, this work presents the highest resolution spectrum of the artists' material cochineal to date. In order to determine an optimized SERS system for dye identification, experiments were conducted in which laser excitation wavelengths were matched with correlating AgFON localized surface plasmon resonance (LSPR) maxima. Enhancements of approximately two orders of magnitude were seen when resonance SERS conditions were met in comparison to non-resonance SERS conditions. Finally, because most samples collected in a museum contain multiple dyestuffs, AgFONs were employed to simultaneously identify individual dyes within several dye mixtures. These results indicate that AgFONs have great potential to be used to identify not only real artwork samples containing a single dye but also samples containing dyes mixtures.


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