scholarly journals Quantum Yield Limits for the Detection of Single-Molecule Fluorescence Enhancement by a Gold Nanorod

ACS Photonics ◽  
2020 ◽  
Vol 7 (9) ◽  
pp. 2498-2505
Author(s):  
Xuxing Lu ◽  
Gang Ye ◽  
Deep Punj ◽  
Ryan C. Chiechi ◽  
Michel Orrit
Keyword(s):  
Quantum Yield ◽  
Single Molecule ◽  
Fluorescence Enhancement ◽  
Gold Nanorod ◽  
Single Molecule Fluorescence

Thousand-fold Enhancement of Single-Molecule Fluorescence Near a Single Gold Nanorod

2012 ◽  
Vol 52 (4) ◽  
pp. 1217-1221 ◽  
Author(s):  
Haifeng Yuan ◽  
Saumyakanti Khatua ◽  
Peter Zijlstra ◽  
Mustafa Yorulmaz ◽  
Michel Orrit
Keyword(s):  
Single Molecule ◽  
Gold Nanorod ◽  
Single Molecule Fluorescence

scholarly journals Mixed metal zero-mode guides (ZMWs) for tunable fluorescence enhancement

2020 ◽  
Vol 2 (5) ◽  
pp. 1894-1903
Author(s):  
Abdullah Al Masud ◽  
W. Elliott Martin ◽  
Faruk H. Moonschi ◽  
So Min Park ◽  
Bernadeta R. Srijanto ◽  
...  
Keyword(s):  
Single Molecule ◽  
Fluorescence Enhancement ◽  
Zero Mode ◽  
Single Molecule Fluorescence ◽  
Mixed Metal

Mixed metal ZMWs tune single molecule fluorescence enhancement.

Combining gold nanoparticle antennas with single-molecule fluorescence resonance energy transfer (smFRET) to study DNA hairpin dynamics

Nanoscale ◽  
2018 ◽  
Vol 10 (14) ◽  
pp. 6611-6619 ◽  
Author(s):  
Jinyong Hu ◽  
Meiyan Wu ◽  
Li Jiang ◽  
Zhensheng Zhong ◽  
Zhangkai Zhou ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Gold Nanoparticle ◽  
Fluorescence Resonance Energy Transfer ◽  
Single Molecule ◽  
Fluorescence Enhancement ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Dna Hairpin ◽  
Single Molecule Fluorescence ◽  
Fluorescence Resonance

Gold nanoparticle antennas as a promising platform not only for fluorescence enhancement but also for the studies of single-molecule kinetics.

scholarly journals Engineering single-molecule fluorescence with asymmetric nano-antennas

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Wenqi Zhao ◽  
Xiaochaoran Tian ◽  
Zhening Fang ◽  
Shiyi Xiao ◽  
Meng Qiu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Single Molecule ◽  
Near Infrared ◽  
Signal To Noise Ratio ◽  
Single Molecule Fluorescence ◽  
Theory Analysis ◽  
Asymmetric Structures ◽  
Coupled Mode ◽  
Nir Dye ◽  
Universal Scheme

AbstractAs a powerful tool for studying molecular dynamics in bioscience, single-molecule fluorescence detection provides dynamical information buried in ensemble experiments. Fluorescence in the near-infrared (NIR) is particularly useful because it offers higher signal-to-noise ratio and increased penetration depth in tissue compared with visible fluorescence. The low quantum yield of most NIR fluorophores, however, makes the detection of single-molecule fluorescence difficult. Here, we use asymmetric plasmonic nano-antenna to enhance the fluorescence intensity of AIEE1000, a typical NIR dye, by a factor up to 405. The asymmetric nano-antenna achieve such an enhancement mainly by increasing the quantum yield (to ~80%) rather than the local field, which degrades the molecules’ photostability. Our coupled-mode-theory analysis reveals that the enhancements stem from resonance-matching between antenna and molecule and, more importantly, from optimizing the coupling between the near- and far-field modes with designer asymmetric structures. Our work provides a universal scheme for engineering single-molecule fluorescence in the near-infrared regime.

Thousand-fold Enhancement of Single-Molecule Fluorescence Near a Single Gold Nanorod

2012 ◽  
Vol 125 (4) ◽  
pp. 1255-1259 ◽  
Author(s):  
Haifeng Yuan ◽  
Saumyakanti Khatua ◽  
Peter Zijlstra ◽  
Mustafa Yorulmaz ◽  
Michel Orrit
Keyword(s):  
Single Molecule ◽  
Gold Nanorod ◽  
Single Molecule Fluorescence

Single-molecule fluorescence enhancement of a near-infrared dye by gold nanorods using DNA transient binding

2018 ◽  
Vol 20 (31) ◽  
pp. 20468-20475 ◽  
Author(s):  
Weichun Zhang ◽  
Martín Caldarola ◽  
Xuxing Lu ◽  
Biswajit Pradhan ◽  
Michel Orrit
Keyword(s):  
Fluorescence Imaging ◽  
Single Molecule ◽  
Gold Nanorods ◽  
Near Infrared ◽  
Fluorescence Enhancement ◽  
Plasmonic Nanostructures ◽  
New Materials ◽  
Single Molecule Fluorescence ◽  
Molecular Fluorescence ◽  
Near Infrared Dye

Fluorescence enhancement by plasmonic nanostructures enables the optical detection of single molecules with weak fluorescence, extending the scope of molecular fluorescence imaging to new materials and systems.

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