scholarly journals Coherent anti-Stokes Raman scattering with single-molecule sensitivity using a plasmonic Fano resonance

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Yu Zhang ◽  
Yu-Rong Zhen ◽  
Oara Neumann ◽  
Jared K. Day ◽  
Peter Nordlander ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Molecule ◽  
Fano Resonance ◽  
Anti Stokes

Seeing a single molecule vibrate through time-resolved coherent anti-Stokes Raman scattering

2014 ◽  
Vol 8 (8) ◽  
pp. 650-656 ◽  
Author(s):  
Steven Yampolsky ◽  
Dmitry A. Fishman ◽  
Shirshendu Dey ◽  
Eero Hulkko ◽  
Mayukh Banik ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Molecule ◽  
Time Resolved ◽  
Anti Stokes

Engineering of Fano resonance in a cross bowtie nanostructure for surface enhanced coherent anti-Stokes Raman scattering

2017 ◽  
Vol 46 (10) ◽  
pp. 1006005
Author(s):  
张祖银 Zhang Zuyin ◽  
朱海军 Zhu Haijun ◽  
宋国峰 Song Guofeng
Keyword(s):  
Raman Scattering ◽  
Fano Resonance ◽  
Surface Enhanced ◽  
Anti Stokes

Single-Molecule Detection of a Cyanine Dye in Silver Colloidal Solution Using Near-Infrared Surface-Enhanced Raman Scattering

1998 ◽  
Vol 52 (2) ◽  
pp. 175-178 ◽  
Author(s):  
Katrin Kneipp ◽  
Harald Kneipp ◽  
Geurt Deinum ◽  
Irving Itzkan ◽  
Ramachandra R. Dasari ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Molecule ◽  
Near Infrared ◽  
Colloidal Solution ◽  
Single Molecule Detection ◽  
Cyanine Dye ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Anti Stokes

Single-molecule Raman spectroscopy of a cyanine dye in aqueous silver colloidal solution with the use of surface-enhanced Raman scattering at near-infrared excitation (NIR-SERS) is reported. A characteristic Poisson distribution of SERS signals due to the Brownian motion of single dye molecule-loaded silver particles reflects the probability of finding 0, 1, or 2 1,1'-diethyl-2,2'cyanine (PIC) molecules in the probed volume during an actual measurement and is evidence that single-molecule detection by SERS has been achieved. Spectra measured in 1 s collection time with 100 mW nonresonant 830 nm excitation provide a clear “fingerprint” of a single PIC molecule by showing its typical Raman lines between 700 and 1700 cm−1. Single-molecule Raman signals are also detected for the first time at the anti-Stokes side of the excitation laser. Effective Raman cross sections for PIC of ∼10−16 cm2 per molecule can be inferred from the ratio between “pumped” anti-Stokes and Stokes signals.

scholarly journals High-resolution imaging of graphene by tip-enhanced coherent anti-Stokes Raman scattering

2019 ◽  
Vol 12 (01) ◽  
pp. 1841003 ◽  
Author(s):  
Xiaolong Kou ◽  
Qian Zhou ◽  
Dong Wang ◽  
Jinghe Yuan ◽  
Xiaohong Fang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Molecule ◽  
High Sensitivity ◽  
Single Atom ◽  
Raman Signal ◽  
Vibrational Coherence ◽  
Order Of Magnitude ◽  
Resolution Imaging ◽  
Molecular Signals ◽  
Anti Stokes

Coherent anti-Stokes Raman scattering (CARS) is able to enhance molecular signals by vibrational coherence compared to weak Raman signal. The surface or tip enhancement are successful technologies, which make it possible for Raman to detect single molecule with nanometer resolution. However, due to technical difficulties, tip-enhanced CARS (TECARS) is not as successful as expected. For single molecular detection, high sensitivity and resolution are two main challenges. Here, we reported the first single atom layer TECARS imaging on Graphene with the highest resolution about 20[Formula: see text]nm, which has ever been reported. The highest EF[Formula: see text] is about 104, the similar order of magnitude with SECARS (EF of tip is usually smaller than that of substrates). Such resolution and sensitivity is promising for medical, biology and chemical applications in the future.

scholarly journals Selective Imaging of Microplastic and Organic Particles in Flow by Multimodal Coherent Anti-Stokes Raman Scattering and Two-Photon Excited Autofluorescence Analysis

2021 ◽  
Vol 93 (12) ◽  
pp. 5234-5240
Author(s):  
Tomoko Takahashi ◽  
Krzysztof Pawel Herdzik ◽  
Konstantinos Nikolaos Bourdakos ◽  
James Arthur Read ◽  
Sumeet Mahajan
Keyword(s):  
Raman Scattering ◽  
Two Photon ◽  
Organic Particles ◽  
Anti Stokes
Sign in / Sign up

Export Citation Format

Share Document