scholarly journals Large scale preparation of surface enhanced Raman spectroscopy substrates based on silver nanowires for trace chemical detection

2015 ◽  
Vol 7 (24) ◽  
pp. 10359-10363 ◽  
Author(s):  
Qiang Wang ◽  
Xingchen Zhao ◽  
Zhuanni Yu ◽  
Ruiqin Tan ◽  
Jing Lan

Surface enhanced Raman spectroscopy (SERS) substrates based on silver nanowires can be easily and precisely prepared one time. These SERS substrates presented good uniformity and performance for the detection of crystal violet and 1,2-di(4-pyridyl)ethylene.

RSC Advances ◽  
2017 ◽  
Vol 7 (75) ◽  
pp. 47373-47379 ◽  
Author(s):  
Jihua Shi ◽  
Tingting You ◽  
Yukun Gao ◽  
Xiu Liang ◽  
Chenling Li ◽  
...  

A flexible and reusable SERS substrates were prepared by electrospinning Ag nanoparticles in reversed micelle into poly(ε-caprolactone) nanofibers.


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.


ACS Nano ◽  
2020 ◽  
Vol 14 (7) ◽  
pp. 8838-8845 ◽  
Author(s):  
Soniya S. Raja ◽  
Chang-Wei Cheng ◽  
Yungang Sang ◽  
Chun-An Chen ◽  
Xin-Quan Zhang ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Mustafa Culha ◽  
Brian Cullum ◽  
Nickolay Lavrik ◽  
Charles K. Klutse

While surface-enhanced Raman spectroscopy (SERS) has been attracting a continuously increasing interest of scientific community since its discovery, it has enjoyed a particularly rapid growth in the last decade. Most notable recent advances in SERS include novel technological approaches to SERS substrates and innovative applications of SERS in medicine and molecular biology. While a number of excellent reviews devoted to SERS appeared in the literature over the last two decades, we will focus this paper more specifically on several promising trends that have been highlighted less frequently. In particular, we will briefly overview strategies in designing and fabricating SERS substrates using deterministic patterning and then cover most recent biological applications of SERS.


2021 ◽  
Vol 31 (4) ◽  
Author(s):  
Quynh-Ngan Luong ◽  
Tran Cao Dao ◽  
Thi Thu Vu ◽  
Manh Cuong Nguyen ◽  
Nhu Duong Nguyen

Surface-enhanced Raman spectroscopy (SERS) is increasingly being used as a method for detecting traces of contaminants in a variety of specimens. In order to maximize SERS’s performance, the most important thing is to have highly active SERS substrates. In this report, we present a simple method for synthesizing silver nanodendrites (AgNDs) on the surface of a copper (Cu) plate using chemical deposition method. The results showed that, after fabrication, a large number of fern-like AgNDs formed on the Cu surface. These AgNDs are distributed evenly across the entire Cu surface with a relatively thick density. The prepared AgNDs were applied as SERS substrates for detecting Rhodamine 6G (R6G) in chili powders. The results showed that, using the prepared AgNDs substrates, as low as 10−10 M R6G in chili powders can be detected. This demonstrates the applicability of fabricated AgNDs as a highly active SERS substrate.


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