Excitation laser energy dependence of surface-enhanced fluorescence showing plasmon-induced ultrafast electronic dynamics in dye molecules

2013 ◽  
Vol 87 (23) ◽  
Author(s):  
Tamitake Itoh ◽  
Yuko S. Yamamoto ◽  
Hiroharu Tamaru ◽  
Vasudevanpillai Biju ◽  
Norio Murase ◽  
...  
Keyword(s):  
Energy Dependence ◽  
Laser Energy ◽  
Dye Molecules ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Surface Enhanced ◽  
Electronic Dynamics ◽  
Excitation Laser

Nanoparticle Tracers in Reservoir-On-A-chip by Surface-Enhanced Raman Scattering - Fluorescence SERS-SEF Imaging Technology

2021 ◽  
Author(s):  
Sehoon Chang ◽  
Shannon L. Eichmann ◽  
Wei Wang
Keyword(s):  
Porous Media ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Composite Nanoparticles ◽  
Dye Molecules ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Abstract Nanoparticles or nanocomposite fluids are injected into oil reservoirs for reservoir tracing or to improve injectivity or recovery of oil. Effective application of nanoparticles in fluid flooding still needs to be investigated. Dual-mode surface-enhanced Raman scattering (SERS) - surface-enhanced fluorescence (SEF) composite nanoparticles have been developed as nanoparticle reservoir tracers. This presentation discusses their transport and detectability in porous media, providing valuable information for understanding the role of nanoparticles in EOR process. The dual-mode surface-enhanced Raman scattering (SERS) - surface-enhanced fluorescence (SEF) composite nanoparticles are synthesized composed of Ag or Au metal cores, specific dye molecules, and a SiO2 shell materials. To optimize maximum signal enhancement of both phenomena such as SERS and SEF, the distance between core metal nanoparticles and dye molecules are precisely controlled. The synthesized composite nanoparticles barcoded with dye molecules are detectable by both fluorescence and Raman spectroscopies due to the SERS-SEF phenomena. Both fluorescence and Raman microscopic images of dye embedded surfaceenhanced Raman scattering (SERS) surface-enhanced fluorescence (SEF) composite nanoparticles in water phase successfully were collected within microfluidic reservoir-on-a-chip. The reservoir-on-a-chip utilized in this study fabricated based on reservoir rock geometry and coated with calcium carbonate. The synthesized SERS-SEF composite nanoparticles in water solution have been flooded into the microfluidic reservoir-on-a-chip and imaged for probing interfacial behavior of fluids such as liquid-liquid interfaces and studying the behavior of nanoparticles at liquid-rock interfaces. The precise synthesis method to produce the composite nanoparticles has been developed for the embedded dye molecules to generate noticeably enhanced detectability due to the strong SERS phenomenon. In conclusion, SERS-SEF nanoparticles barcoded with the fingerprinted Raman and fluorescence signals can provide a possible pathway toward SERS-SEF nanoprobe as various barcoded tracers to understand fluid behavior in porous media. Composite nanoparticle synthesis and its detection in flow technologies have been developed for visualization of the fluid flow behavior in porous media representing reservoir rock geometry. The results of the high-resolution nanoparticle fluid imaging data in reservoir-on-a-chip can be applied to understand mechanism of nanoparticle fluid assisted chemical enhanced oil recovery.

The Detection of a Fluorescent Dye by Surface-Enhanced Fluorescence with the Addition of Silver Nanoparticles and Its Application for the Space Station

2020 ◽  
Vol 20 (5) ◽  
pp. 3195-3200 ◽  
Author(s):  
Jian Wu ◽  
Yongjun Du ◽  
Chunyan Wang ◽  
Tao Chen
Keyword(s):  
Silver Nanoparticles ◽  
Fluorescence Detection ◽  
Microfluidic Chip ◽  
Fluorescent Dye ◽  
Fluorescence Signal ◽  
Fast Method ◽  
Dye Molecules ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Surface Enhanced

Surface-enhanced fluorescence detection has large potential for detecting many chemical and biological trace analytes. This paper presents a novel method for preparing silver nanomaterials in microfluidic chip channels for the surface-enhanced fluorescence detection of fluorescent dye (SYBR Green I) molecules. Microfluidic chip channels were fabricated by a 248-nm excimer laser. Silver nanoparticles (Ag-NPs) were prepared inside the microfluidic chip channels by directly heating the silver precursor solution. The influence of different temperatures on the sizes of the silver nanoparticles was studied. Then, the surface-enhanced fluorescence technology based on the microfluidic system was used to detect the fluorescent dye molecules. As a result, the fluorescence signal of the fluorescent dye molecules was significantly enhanced by the silver nanoparticles. In addition, the effect of particle size on the fluorescence signal was studied. This simple and fast method is suitable for a fluorescent PCR (polymerase chain reaction) system and has good application prospects for detecting harmful microorganisms in a spacecraft.

Simultaneous SERS and surface-enhanced fluorescence from dye-embedded metal core–shell nanoparticles

2014 ◽  
Vol 16 (19) ◽  
pp. 8791-8794 ◽  
Author(s):  
Yan Zhou ◽  
Peng Zhang
Keyword(s):  
Core Shell ◽  
Dye Molecules ◽  
Enhanced Fluorescence ◽  
Metal Core ◽  
Surface Enhanced Fluorescence ◽  
Shell Nanoparticles ◽  
The Core ◽  
Surface Enhanced ◽  
Core Shell Nanoparticles

We demonstrate a methodology to prepare Au-core–Ag-shell nanoparticles displaying both SERS and surface-enhanced fluorescence (SEF) activities simultaneously by embedding dye molecules between the core and the shell.

scholarly journals Surface enhanced fluorescence of Ag nanostructure films prepared by DC magnetron sputtering

2020 ◽  
Author(s):  
V. Atimayulerd ◽  
N. Srisuai ◽  
S. Boonruang ◽  
S. Kalasung ◽  
C. Chananonnawathorn ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Dc Magnetron Sputtering ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Surface Enhanced

Study on surface enhanced fluorescence based on Ag@razor clam substrate

2021 ◽  
Vol 488 ◽  
pp. 126863
Author(s):  
Hongwen Cao ◽  
Zhen Sun ◽  
Liting Guo ◽  
Na Li ◽  
Zubin Shang ◽  
...  
Keyword(s):  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Razor Clam ◽  
Surface Enhanced

scholarly journals Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering

Plasmonics ◽  
2014 ◽  
Vol 9 (6) ◽  
pp. 1371-1376 ◽  
Author(s):  
Signe Damm ◽  
Frances Lordan ◽  
Antony Murphy ◽  
Mark McMillen ◽  
Robert Pollard ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Nanorod Array ◽  
Gold Nanorod ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Surface Enhanced

High Contrast Surface Enhanced Fluorescence of Carbon Dot Labeled Bacteria Cells on Aluminum Foil

2020 ◽  
Vol 30 (6) ◽  
pp. 1477-1482 ◽  
Author(s):  
Rostislav Bukasov ◽  
Zhanar Kunushpayeva ◽  
Alisher Rapikov ◽  
Saida Zhunussova ◽  
Alisher Sultangaziyev ◽  
...  
Keyword(s):  
Aluminum Foil ◽  
High Contrast ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Carbon Dot ◽  
Surface Enhanced

scholarly journals Monitoring individual cell-signaling activity using combined metal-clad waveguide and surface-enhanced fluorescence imaging

The Analyst ◽  
2018 ◽  
Vol 143 (22) ◽  
pp. 5559-5567 ◽  
Author(s):  
Thomas Söllradl ◽  
Kevin Chabot ◽  
Ulrike Fröhlich ◽  
Michael Canva ◽  
Paul G. Charette ◽  
...  
Keyword(s):  
Cell Signaling ◽  
Fluorescence Imaging ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Individual Cell ◽  
Live Cell ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Surface Enhanced ◽  
Signaling Activity

Validation of a combined metal-clad waveguide and surface enhanced fluorescence imaging platform for live cell imaging.

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