Results 31 to 40 of about 16,509 (300)
Sol-Gel Thin Films for Plasmonic Gas Sensors
Sensors, 2015 Plasmonic gas sensors are optical sensors that use localized surface plasmons or extended surface plasmons as transducing platform. Surface plasmons are very sensitive to dielectric variations of the environment or to electron exchange, and these effects
Enrico Della Gaspera +1 more
doaj +1 more source
Quantum Dot-Induced Blue Shift of Surface Plasmon Spectroscopy
Nanomaterials, 2022 We experimentally demonstrate the spectral blue shift of surface plasmon resonance through the resonant coupling between quantum dots (QDs) and surface plasmons, surprisingly in contrast to the conventionally observed red shift of plasmon spectroscopy ...
Than Thi Nguyen +4 more
doaj +1 more source
Electrical Excitation of Surface Plasmons [PDF]
Frontiers in Optics 2012/Laser Science XXVIII, 2011 We exploit a plasmon mediated two-step momentum downconversion scheme to convert low-energy tunneling electrons into propagating photons. Surface plasmon polaritons (SPPs) propagating along an extended gold nanowire are excited on one end by low-energy electron tunneling and are then converted to free-propagating photons at the other end.
Bharadwaj, Palash +2 more
openaire +4 more sources
Designing Plasmonic Gratings with Transformation Optics
Physical Review X, 2015 Plasmonic gratings that support both localized and propagating plasmons have wide applications in solar cells and optical biosensing. In this paper, we report on a most unusual grating designed to capture light efficiently into surface plasmons and ...
Matthias Kraft +3 more
doaj +1 more source
Forty-Nanometer Plasmonic Lithography Resolution with Two-Stage Bowtie Lens
Micromachines, 2023 Optical imaging and photolithography hold the promise of extensive applications in the branch of nano-electronics, metrology, and the intricate domain of single-molecule biology.
Yan Meng +4 more
doaj +1 more source
Optics Express, 2007 Employing an interferometric cavity ring-down technique we study the launching, propagation and reflection of surface plasmons on a smooth gold-air interface that is intersected by two parallel, sub-wavelength wide slits. Inside the low-finesse optical cavity defined by these slits the surface plasmon is observed to make multiple bounces.
Kuzmin, N.V. (author) +3 more
openaire +4 more sources
Tunable grating-assisted surface plasmon resonance by use of nano-polymer dispersed liquid crystal electro-optical material [PDF]
, 2007 This paper reports on the experimental observation of the displacement of a surface plasmon resonance (SPR) excited by a metallic diffraction grating. This effect is achieved by the use of an electro-optical material composed of nano-sized droplets of ...
Bougrenet de la Tocnaye, Jean-Louis de +4 more
core +1 more source
A phased antenna array for surface plasmons. [PDF]
Sci Rep, 2016 Surface plasmon polaritons are electromagnetic waves that propagate tightly bound to metal surfaces. The concentration of the electromagnetic field at the surface as well as the short wavelength of surface plasmons enable sensitive detection methods and ...
Dikken DJ +4 more
europepmc +2 more sources
Surface Plasmon Polaritons on Metallic Surfaces
Optics and Photonics News, 2007 A unified theoretical study of surface plasmon polaritons on flat metallic surfaces and interfaces is undertaken to clarify the nature of these electromagnetic waves, conditions under which they are launched, and the restrictions imposed by Maxwell's equations that ultimately determine the strength of the excited plasmons. Finite Difference Time Domain
Armis R, Zakharian +2 more
openaire +2 more sources
Surface Plasmons in Silicon Nanowires
Advanced Photonics Research, 2021 Plasmon resonances (PRs) in metallic nanostructures have been extensively studied, whereas reports on PR in silicon nanowires (Si NWs) are very few, partial, and they refer to structures larger than 100 nm.
Giovanni Borgh +6 more
doaj +1 more source