Directed assembly of bimetallic nanoarchitectures by interfacial photocatalysis with plasmonic hot electrons

Author(s):  
Gregory T. Forcherio ◽  
Jonathan Boltersdorf ◽  
Joshua P. McClure ◽  
Asher C. Leff ◽  
David R. Baker ◽  
...  
1981 ◽  
Vol 42 (C7) ◽  
pp. C7-215-C7-220 ◽  
Author(s):  
V. Bareikis ◽  
A. Galdikas ◽  
R. Miliu¡yté ◽  
J. Pozhela ◽  
Viktoravičius
Keyword(s):  

1981 ◽  
Vol 42 (C7) ◽  
pp. C7-117-C7-122 ◽  
Author(s):  
R. Brunetti ◽  
C. Jacoboni ◽  
L. Reggiani
Keyword(s):  

2016 ◽  
Vol 187 (09) ◽  
pp. 971-979
Author(s):  
Vladimir A. Gritsenko
Keyword(s):  

2008 ◽  
Author(s):  
Sabrina Habtoun ◽  
Christian Bergaud ◽  
Monique Dilhan ◽  
David Bourrier

2009 ◽  
Vol 68 (6) ◽  
pp. 549-554
Author(s):  
Yu. Ye. Kamenev ◽  
F. F. Sizov ◽  
V. N. Dobrovolsky

2017 ◽  
Author(s):  
Pedro M. R. Paulo ◽  
David Botequim ◽  
Agnieszka Jóskowiak ◽  
Sofia Martins ◽  
Duarte M. F. Prazeres ◽  
...  

<div> <div> <div> <p>We have employed DNA-directed assembly to prepare dimers of gold nanoparticles and used their longitudinally coupled plasmon mode to enhance the fluorescence emission of an organic red-emitting dye, Atto-655. The plasmon- enhanced fluorescence of this dye using dimers of 80 nm particles was measured at single molecule detection level. The top enhancement factors were above 1000-fold in 71% of the dimers within a total of 32 dimers measured, and, in some cases, they reached almost 4000-fold, in good agreement with model simulations. Additionally, fluorescence lifetime correlation analysis enabled the separation of enhanced from non-enhanced emission simultaneously collected in our confocal detection volume. This approach allowed us to recover a short relaxation component exclusive to enhanced emission that is attributed to the interaction of the dye with DNA in the interparticle gaps. </p> </div> </div> </div>


Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Wenhao Wang ◽  
Lucas V. Besteiro ◽  
Peng Yu ◽  
Feng Lin ◽  
Alexander O. Govorov ◽  
...  

Abstract Hot electrons generated in metallic nanostructures have shown promising perspectives for photodetection. This has prompted efforts to enhance the absorption of photons by metals. However, most strategies require fine-tuning of the geometric parameters to achieve perfect absorption, accompanied by the demanding fabrications. Here, we theoretically propose a Ag grating/TiO2 cladding hybrid structure for hot electron photodetection (HEPD) by combining quasi-bound states in the continuum (BIC) and plasmonic hot electrons. Enabled by quasi-BIC, perfect absorption can be readily achieved and it is robust against the change of several structural parameters due to the topological nature of BIC. Also, we show that the guided mode can be folded into the light cone by introducing a disturbance to become a guided resonance, which then gives rise to a narrow-band HEPD that is difficult to be achieved in the high loss gold plasmonics. Combining the quasi-BIC and the guided resonance, we also realize a multiband HEPD with near-perfect absorption. Our work suggests new routes to enhance the light-harvesting in plasmonic nanosystems.


1965 ◽  
Vol 9 (1) ◽  
pp. 69-70 ◽  
Author(s):  
P. J. Price
Keyword(s):  

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