Results 11 to 20 of about 4,215,224 (290)

Metal-enhanced e-type fluorescence [PDF]

Applied Physics Letters, 2008
In this letter, we report metal-enhanced e-type fluorescence. Eosin in close proximity to silver island films (SiFs) shows enhanced e-type fluorescence with an approximately two-fold higher intensity observed from SiFs, as compared to a control sample. Our findings suggest two complementary mechanisms for the enhancement: surface plasmons can radiate e-
Yongxia, Zhang, Kadir, Aslan, Michael J R, Previte, Chris D, Geddes   +3 more
openaire   +3 more sources

Metal-enhanced excimer (P-type) fluorescence [PDF]

Chemical Physics Letters, 2008
In this Letter, we report the first observation of metal-enhanced excimer (P-type) fluorescence from pyrene. Pyrene in close proximity to silver island films (SIFs) shows enhanced pyrene excimer emission with a ?2.5-fold higher emission intensity observed from SIFs and 5×10?3M pyrene, as compared to a quartz control sample containing no silver ...
Yongxia, Zhang, Kadir, Aslan, Michael J R, Previte', Chris D, Geddes   +3 more
openaire   +3 more sources

Metal-Enhanced Fluorescence of Carbon Nanotubes [PDF]

Journal of the American Chemical Society, 2010
The photoluminescence (PL) quantum yield of single-walled carbon nanotubes (SWNTs) is relatively low, with various quenching effects by metallic species reported in the literature. Here, we report the first case of metal enhanced fluorescence (MEF) of surfactant-coated carbon nanotubes on nanostructured gold substrates.
Hong, Guosong, Tabakman, Scott M., Welsher, Kevin, Wang, Hailiang, Wang, Xinran, Dai, Hongjie   +5 more
openaire   +4 more sources

Spectral shifts in metal-enhanced fluorescence

Applied Physics Letters, 2014
We report a 2 nm red shift in the fluorescence spectra observed for Rhodamine 800 dissolved in glycerol on copper substrates as compared to glass reference samples, suggesting a wavelength dependence of metal enhanced fluorescence. The full width half maximum of the blue-red spectra is about 1 nm narrower as compared to the reference sample.
Karolin, Jan, Geddes, Chris
openaire   +2 more sources

Metal-Enhanced Fluorescence of Nanocomplexes. [PDF]

Materials (Basel)
Metal-enhanced fluorescence (MEF) has found widespread application in biomedical sensing and in vivo tissue imaging systems. To enhance MEF efficiency, it is necessary to optimize the interaction between metal nanoparticle plasmon and the fluorophore molecule.
Yakunin AN, Zarkov SV, Avetisyan YA, Akchurin GG, Tuchin VV.   +4 more
europepmc   +3 more sources

Aluminum foil as a substrate for metal enhanced fluorescence of bacteria labelled with quantum dots, shows very large enhancement and high contrast

Sensing and Bio-Sensing Research, 2020
Very high surface/metal enhanced fluorescence was observed for E. coli single bacteria cells labeled with composite CdSeS/ZnS quantum dots (QDs) on three substrates: aluminum foil, aluminum film and gold film.
Alisher Sultangaziyev, Aktilek Akhmetova, Zhanar Kunushpayeva, Alisher Rapikov, Olena Filchakova, Rostislav Bukasov   +5 more
doaj   +1 more source

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

Beilstein Journal of Nanotechnology, 2022
Since the initial discovery of surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF), these techniques have shown huge potential for applications in biomedicine, biotechnology, and optical sensors. Both methods rely on the high
Ioana Marica, Fran Nekvapil, Maria Ștefan, Cosmin Farcău, Alexandra Falamaș   +4 more
doaj   +1 more source

Controllable Synthesis of Biocompatible Fluorescent Carbon Dots From Cellulose Hydrogel for the Specific Detection of Hg2+

Frontiers in Bioengineering and Biotechnology, 2021
Heavy metal ions overload can seriously harm human health. Simple and effective strategies for the specific detection of heavy metal ions are of great important.
Hailong Huang, Hao Ge, Zhipeng Ren, Zhijian Huang, Min Xu, Xianghui Wang   +5 more
doaj   +1 more source

Metal-Enhanced Fluorescence (MEF) [PDF]

Biophysical Journal, 2009
In recent years our laboratories have described the favorable interactions and outcomes of both plasmon supporting particles (Ag, Au, Cu, Zn, Ni, Cr) and substrates with electronically excited states. These favorable effects have included enhanced fluorescence emission from singlet states, S1 and S2, as well as enhanced phosphorescence yields from ...
Zhang, Yongxia, Aslan, Kadir, Geddes, Chris D.   +2 more
openaire   +1 more source

Metal-enhanced fluorescence of single green fluorescent protein (GFP) [PDF]

Biochemical and Biophysical Research Communications, 2008
The green fluorescent protein (GFP) has emerged as a powerful reporter molecule for monitoring gene expression, protein localization, and protein-protein interaction. However, the detection of low concentrations of GFPs is limited by the weakness of the fluorescent signal and the low photostability.
Yi, Fu, Jian, Zhang, Joseph R, Lakowicz
openaire   +2 more sources