High-Density Periodic Arrays of Self-Aligned Subwavelength Nanopyramids for Surface-Enhanced Raman Spectroscopy

2010 ◽  
Vol 114 (50) ◽  
pp. 21953-21959 ◽  
Author(s):  
Mingliang Jin ◽  
Vishnu Pully ◽  
Cees Otto ◽  
Albert van den Berg ◽  
Edwin T. Carlen
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
High Density ◽  
Periodic Arrays ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Wafer-scale fabrication of high-density nanoslit arrays for surface-enhanced Raman spectroscopy

2016 ◽  
Vol 27 (49) ◽  
pp. 49LT01 ◽  
Author(s):  
Mingliang Jin ◽  
Yunfei Zhu ◽  
Albert van den Berg ◽  
Zhang Zhang ◽  
Guofu Zhou ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
High Density ◽  
Wafer Scale ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoslit Arrays

Tailoring surface plasmons of high-density gold nanostar assemblies on metal films for surface-enhanced Raman spectroscopy

Nanoscale ◽  
2014 ◽  
Vol 6 (1) ◽  
pp. 616-623 ◽  
Author(s):  
Jiwon Lee ◽  
Bo Hua ◽  
Seungyoung Park ◽  
Minjeong Ha ◽  
Youngsu Lee ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Plasmons ◽  
Surface Enhanced Raman Spectroscopy ◽  
Metal Films ◽  
High Density ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Gold Nanostar

Magnetic field induced high–density SERS active assembly of Fe3O4@Au nanostar in glass capillary for food colorants detection

2021 ◽  
Author(s):  
Lihua Xu ◽  
Qianqian Ding
Keyword(s):  
Magnetic Field ◽  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Magnetic Core ◽  
High Density ◽  
Glass Capillary ◽  
Food Colorants ◽  
Gold Shell ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

The Fe3O4@Au nanostar, whose anisotropic shape couples the plasmons focused on the magnetic core with the branches of gold shell, makes it hold promise for surface enhanced Raman spectroscopy (SERS)...

High-density ordered Ag@Al2O3nanobowl arrays in applications of surface-enhanced Raman spectroscopy

2016 ◽  
Vol 27 (16) ◽  
pp. 165304 ◽  
Author(s):  
Mengyang Kang ◽  
Xiaoyan Zhang ◽  
Liwei Liu ◽  
Qingwei Zhou ◽  
Mingliang Jin ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
High Density ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

scholarly journals Optimization of High-Density Fe-Au Nano-Arrays for Surface-Enhanced Raman Spectroscopy of Biological Samples

Biosensors ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 181
Author(s):  
Giovanni Marinaro ◽  
Maria Laura Coluccio ◽  
Francesco Gentile
Keyword(s):  
Raman Spectroscopy ◽  
Porous Alumina ◽  
Thiol Group ◽  
Surface Enhanced Raman Spectroscopy ◽  
High Density ◽  
Raman Signal ◽  
Gold Nanowires ◽  
Alumina Membranes ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

The method of realizing nanostructures using porous alumina templates has attracted interest due to the precise geometry and cheap cost of nanofabrication. In this work, nanoporous alumina membranes were utilized to realize a forest of nanowires, providing a bottom-up nanofabrication method suitable for surface-enhanced Raman spectroscopy (SERS). Gold and iron were electroplated through the straight channels of the membrane. The resulting nanowires are, indeed, made of an active element for plasmonic resonance and SERS as the hexagonal distribution of the nanowires and the extreme high density of the nanowires allows to excite the plasmon and detect the Raman signal. The method to reduce the distance between pores and, consequently, the distance of the nanowires after electrodeposition is optimized here. Indeed, it has been predicted that the light intensity enhancement factor is up to 1012 when the gap is small than 10 nm. Measurements of Raman signal of thiol groups drying on the gold nanowires show that the performance of the device is improved. As the thiol group can be linked to proteins, the device has the potential of a biosensor for the detection of a few biomolecules. To assess the performance of the device and demonstrate its ability to analyze biological solutions, we used it as SERS substrates to examine solutions of IgG in low abundance ranges. The results of the test indicate that the sensor can convincingly detect biomolecules in physiologically relevant ranges.

Bacterial detection and differentiation via direct volatile organic compound sensing with surface enhanced Raman spectroscopy

2017 ◽  
Author(s):  
Caitlin S. DeJong ◽  
David I. Wang ◽  
Aleksandr Polyakov ◽  
Anita Rogacs ◽  
Steven J. Simske ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Bacterial Infections ◽  
Direct Detection ◽  
Point Of Care ◽  
Surface Enhanced Raman Spectroscopy ◽  
E Coli ◽  
Recent Emergence ◽  
Surface Enhanced ◽  
Volatile Organic ◽  
Surface Enhanced Raman

Through the direct detection of bacterial volatile organic compounds (VOCs), via surface enhanced Raman spectroscopy (SERS), we report here a reconfigurable assay for the identification and monitoring of bacteria. We demonstrate differentiation between highly clinically relevant organisms: <i>Escherichia coli</i>, <i>Enterobacter cloacae</i>, and <i>Serratia marcescens</i>. This is the first differentiation of bacteria via SERS of bacterial VOC signatures. The assay also detected as few as 10 CFU/ml of <i>E. coli</i> in under 12 hrs, and detected <i>E. coli</i> from whole human blood and human urine in 16 hrs at clinically relevant concentrations of 10<sup>3</sup> CFU/ml and 10<sup>4</sup> CFU/ml, respectively. In addition, the recent emergence of portable Raman spectrometers uniquely allows SERS to bring VOC detection to point-of-care settings for diagnosing bacterial infections.

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