Cascaded logic gates in nanophotonic plasmon networks

Abstract

Optical computing has been pursued for decades as a potential strategy for advancing beyond the fundamental performance limitations of semiconductor-based electronic devices, but feasible on-chip integrated logic units and cascade devices have not been reported. Here we demonstrate that a plasmonic binary NOR gate, a 'universal logic gate', can be realized through cascaded OR and NOT gates in four-terminal plasmonic nanowire networks. This finding provides a path for the development of novel nanophotonic on-chip processor architectures for future optical computing technologies.

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

“…However, the larger difference between CIDs at terminals of another nanowire (c or d) and the illuminating terminal showed that the CID could be manipulated by the chirality of a nanostructure, such as through the coupling angle between two Ag nanowires, the morphology of the Ag terminals, and the distance of the coupling. [6][7][8][9] In this system, the CID increased while the crossing angle was less than 90 6 (terminal c) and Nanowire supported plasmonic waveguide for RE-SERS YZ Huang et al 14 decreased, while the crossing angle was larger than 90 6 . These experimental results demonstrated that the ROA could be remotely excited and enhanced by chiral PSPPs, which had the potential to remotely determine the molecular chirality or the absolute configuration or conformation of a chiral living cell.…”

“…The former could overcome the traditional diffraction limit in dielectric optics and be the key approach to overcoming the bottleneck of the miniaturization of nanophotonic devices and large-scale on-chip integrated circuits for next-generation information technology. [5][6][7][8][9][10][11] The extremely enhanced EM field caused by the latter has great application values in various fields, such as surface-enhanced spectrum, [12][13][14][15] surface plasmon resonance sensors, [16][17][18][19] ultra transmission, 20,21 plasmonic trapping, 22,23 plasmonic-enhanced emission, 24,25 quantum communication, 26,27 super-resolution microscopy, 28 cloaking, 29 photothermal cancer therapy, 30,31 steam generation, 30,32,33 holography, 34 photovoltaics [35][36][37] and water splitting. [38][39][40] One of the most promising applications of SPPs, especially localized SPPs, is surface-enhanced Raman scattering (SERS), which has been studied both theoretically and experimentally for many decades.…”

Impact of the Crosslinker’s Molecular Structure on the Aggregation of Gold Nanoparticles

“…In terms of electro-optic devices, AuNP could act as plasmonic waveguides [10][11][12][13]. Additionally, films of interlinked AuNP can be used to study the conductance of molecules [5,14,15].…”

The surface plasmon modes of self-assembled gold nanocrystals

“…In the case of metal nanocrystals, one motivation for achieving such assembly is the possibility of creating materials with tunable optical resonances, which would facilitate the development of plasmonics. Surface plasmon resonances allow control of light below the diffraction limit and provide a potential platform for biosensing 3 , for fabrication of metamaterials [4][5][6][7][8] , nanocircuits 9 , subwavelength waveguides 10,11 , and nonlinear optics 12 . The coupling of surface plasmon modes is strongest at very small separations (o5 nm); however, it is extremely challenging to fabricate such systems by top-down lithography at present, even with high-resolution electron beam lithography.…”