Enriching surface-enhanced Raman Spectral signatures in combined static and plasmonic electrical fields in self-powered substrates

Nano Energy ◽  
2021 ◽  
pp. 106737
Author(s):  
Haitao Li ◽  
Hui Yin ◽  
Han Dai ◽  
Hiang Kwee Lee ◽  
Yanying Cui ◽  
...  
Keyword(s):  
Electrical Fields ◽  
Spectral Signatures ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Self Powered ◽  
Raman Spectral

scholarly journals Imaging and SERS Study of the Au Nanoparticles Interaction with HPV and Carcinogenic Cervical Tissues

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3758
Author(s):  
Andrea Ceja-Fdez ◽  
Ramon Carriles ◽  
Ana Lilia González-Yebra ◽  
Juan Vivero-Escoto ◽  
Elder de la Rosa ◽  
...  
Keyword(s):  
Multiphoton Microscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Rapid Screening ◽  
Emission Region ◽  
Sem Images ◽  
Spectral Signatures ◽  
Two Photon ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Gold Nps

In this work, gold NPs were prepared by the Turkevich method, and their interaction with HPV and cancerous cervical tissues were studied by scanning electron microscopy, energy-dispersive x-ray spectroscopy, confocal and multiphoton microscopy and SERS. The SEM images confirmed the presence and localization of the gold NPs inside of the two kinds of tissues. The light absorption of the gold NPs was at 520 nm. However, it was possible to obtain two-photon imaging (red emission region) of the gold NPs inside of the tissue, exciting the samples at 900 nm, observing the morphology of the tissues. The infrared absorption was probably due to the aggregation of gold NPs inside the tissues. Therefore, through the interaction of gold nanoparticles with the HPV and cancerous cervical tissues, a surface enhanced Raman spectroscopy (SERS) was obtained. As preliminary studies, having an average of 1000 Raman spectra per tissue, SERS signals showed changes between the HPV-infected and the carcinogenic tissues; these spectral signatures occurred mainly in the DNA bands, potentially offering a tool for the rapid screening of cancer.

scholarly journals Surface-enhanced Raman Spectral Measurements of 5-Fluorouracil in Saliva

Molecules ◽  
2008 ◽  
Vol 13 (10) ◽  
pp. 2608-2627 ◽  
Author(s):  
Stuart Farquharson ◽  
Alan Gift ◽  
Chetan Shende ◽  
Frank Inscore ◽  
Beth Ordway ◽  
...  
Keyword(s):  
Spectral Measurements ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Raman Spectral

Surface enhanced Raman spectral studies of 2-bromo-1,4-naphthoquinone

2015 ◽  
Vol 138 ◽  
pp. 113-119 ◽  
Author(s):  
K. Geetha ◽  
M. Umadevi ◽  
G.V. Sathe ◽  
P. Vanelle ◽  
T. Terme ◽  
...  
Keyword(s):  
Spectral Studies ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Raman Spectral

scholarly journals Towards enhanced optical sensor performance: SEIRA and SERS with plasmonic nanostars

The Analyst ◽  
2017 ◽  
Vol 142 (6) ◽  
pp. 951-958 ◽  
Author(s):  
O. Bibikova ◽  
J. Haas ◽  
A. I. López-Lorente ◽  
A. Popov ◽  
M. Kinnunen ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Optical Sensor ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silicon Substrates ◽  
Mid Infrared ◽  
Spectral Signatures ◽  
Sensor Performance ◽  
Infrared Reflection ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We report the development of plasmonic chip-based systems comprising self-assembled gold nanostars at silicon substrates that enable concomitantly enhanced Raman (surface enhanced Raman spectroscopy; SERS) and mid-infrared (surface enhanced infrared reflection or absorption spectroscopy; SEIRA) spectral signatures.

scholarly journals Using PDMS Plasma Cavity SERS Substrate for the Detection of Aspartame

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Lvming Chen ◽  
Chaoqun Ma ◽  
Lei Li ◽  
Chun Zhu ◽  
Jiao Gu ◽  
...  
Keyword(s):  
Spectral Characteristics ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Artificial Sweetener ◽  
Characteristic Peak ◽  
Peak Intensity ◽  
Relative Standard ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Raman Spectral

Surface-enhanced Raman spectroscopy (SERS) was used to simply and sensitively detect the artificial sweetener aspartame added to purified water. In this paper, a cavity formed spontaneously by silver ion droplets, and liquid polydimethylsiloxane (PDMS) is used as an SERS substrate to integrate plasma nanoparticles into optical devices. Firstly, Raman spectral characteristics of aspartame powder and aspartame aqueous solution were analyzed. Secondly, the effect of aspartame content in purified water on SERS intensity was investigated by using the prepared PDMS plasma cavity to test the samples. Thirdly, the SERS calibration curve was established by using the characteristic peak intensity of aspartame, and a good linearity relationship between the concentration of aspartame added in purified water and the characteristic peak intensity of 1588(±5) cm-1 was obtained. The linear regression equation and correlation coefficient (r) were y = 11412.73874 x + 107.36722 and 0.99593, respectively. The average recovery of aspartame in purified water was 101–106%, and the relative standard deviation (RSD) was 0.121–0.496%. The experimental results show that using this method can detect aspartame in purified water correctly, which is expected to be used in the identification and detection of sweeteners in purified water.

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