Ultrafast surface-enhanced Raman spectroscopy

The Analyst ◽  
2015 ◽  
Vol 140 (15) ◽  
pp. 4922-4931 ◽  
Author(s):  
Emily L. Keller ◽  
Nathaniel C. Brandt ◽  
Alyssa A. Cassabaum ◽  
Renee R. Frontiera
Keyword(s):  
Raman Spectroscopy ◽  
Chemical Reactions ◽  
Time Resolution ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Ultrafast surface-enhanced Raman spectroscopy (SERS) with pico- and femtosecond time resolution has the ability to elucidate the mechanisms by which plasmons mediate chemical reactions.

Spiers Memorial Lecture : Surface-enhanced Raman spectroscopy: from single particle/molecule spectroscopy to ångstrom-scale spatial resolution and femtosecond time resolution

2017 ◽  
Vol 205 ◽  
pp. 9-30 ◽  
Author(s):  
Anne-Isabelle Henry ◽  
Tyler W. Ueltschi ◽  
Michael O. McAnally ◽  
Richard P. Van Duyne
Keyword(s):  
Raman Spectroscopy ◽  
Spatial Resolution ◽  
Single Molecule ◽  
Time Resolution ◽  
Glucose Sensor ◽  
Surface Enhanced Raman Spectroscopy ◽  
Memorial Lecture ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Four decades on, surface-enhanced Raman spectroscopy (SERS) continues to be a vibrant field of research that is growing (approximately) exponentially in scope and applicability while pushing at the ultimate limits of sensitivity, spatial resolution, and time resolution. This introductory paper discusses some aspects related to all four of the themes for this Faraday Discussion. First, the wavelength-scanned SERS excitation spectroscopy (WS-SERES) of single nanosphere oligomers (viz., dimers, trimers, etc.), the distance dependence of SERS, the magnitude of the chemical enhancement mechanism, and the progress toward developing surface-enhanced femtosecond stimulated Raman spectroscopy (SE-FSRS) are discussed. Second, our efforts to develop a continuous, minimally invasive, in vivo glucose sensor based on SERS are highlighted. Third, some aspects of our recent work in single molecule SERS and the translation of that effort to ångstrom-scale spatial resolution in ultrahigh vacuum tip-enhanced Raman spectroscopy (UHV-TERS) and single molecule electrochemistry using electrochemical (EC)-TERS will be presented. Finally, we provide an overview of analytical SERS with our viewpoints on SERS substrates, approaches to address the analyte generality problem (i.e. target molecules that do not spontaneously adsorb and/or have Raman cross sections <10−29 cm2 sr−1), SERS for catalysis, and deep UV-SERS.

Recent Advances in Plasmon-Enhanced Raman Spectroscopies for Catalytic Reactions on Bifunctional Metallic Nanostructures

Nanoscale ◽  
2021 ◽  
Author(s):  
Hai-Sheng Su ◽  
Hui-Shu Feng ◽  
Xiang Wu ◽  
Juan-Juan Sun ◽  
Bin Ren
Keyword(s):  
Raman Spectroscopy ◽  
Reaction Mechanism ◽  
Chemical Reactions ◽  
Surface Enhanced Raman Spectroscopy ◽  
Catalytic Performance ◽  
Metallic Nanostructures ◽  
Catalytic Reactions ◽  
Characterization Methods ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Metallic nanostructures exhibit superior catalytic performance for diverse chemical reactions and the in-depth understanding of reaction mechanism requires versatile characterization methods. Plamon-enhanced Raman spectroscopies (PERS), including surface-enhanced Raman spectroscopy (SERS),...

scholarly journals Observing Metal-Catalyzed Chemical Reactions in Situ Using Surface-Enhanced Raman Spectroscopy on Pd−Au Nanoshells

2008 ◽  
Vol 130 (49) ◽  
pp. 16592-16600 ◽  
Author(s):  
Kimberly N. Heck ◽  
Benjamin G. Janesko ◽  
Gustavo E. Scuseria ◽  
Naomi J. Halas ◽  
Michael S. Wong
Keyword(s):  
Raman Spectroscopy ◽  
Chemical Reactions ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Catalyzed

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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