Au nanoring arrays as surface enhanced Raman spectroscopy substrate for chemical component study of individual atmospheric aerosol particle

2021 ◽  
Vol 100 ◽  
pp. 11-17
Author(s):  
Hanyun Cheng ◽  
Xu Dong ◽  
Yang Yang ◽  
Yiqing Feng ◽  
Tao Wang ◽  
...  
2018 ◽  
Vol 20 (11) ◽  
pp. 1570-1580 ◽  
Author(s):  
Peter N. Tirella ◽  
Rebecca L. Craig ◽  
Darrell B. Tubbs ◽  
Nicole E. Olson ◽  
Ziying Lei ◽  
...  

Due to their small size, measurements of the complex composition of atmospheric aerosol particles and their surfaces are analytically challenging.


2017 ◽  
Author(s):  
Caitlin S. DeJong ◽  
David I. Wang ◽  
Aleksandr Polyakov ◽  
Anita Rogacs ◽  
Steven J. Simske ◽  
...  

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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