Exciton-plasmon coupling in two-dimensional plexitonic nano grating

Asgari, Nasrin; Hamidi, Seyedeh Mehri

doi:10.1016/j.optmat.2018.05.011

Cited by 23 publications

(9 citation statements)

References 31 publications

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“…As seen in several examples, weak couplings can control the emission strengths of excitons. [205][206][207][208] On the other hand, when g > γ QE and κ, strong coupling occurs; thus, a coherent energy exchange between the two quantum states (e.g., plasmons and excitons) occurs before they are radiated to free space or damped; this produces a hybridized channel. [209][210][211] This coherent oscillation of the hybridized states splits the emission peak into two and corresponds to the hybrid plasmon-exciton state known as a plexciton, in a process referred to as Rabi splitting.…”

Section: Plasmon-emitter Coupling From 2d Materials To Organic and Inorganic Materials In Plasmonic Gapmentioning

confidence: 99%

Quantum Plasmonics: Energy Transport Through Plasmonic Gap

2021

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scanning tunneling microscopy (STM), [5,6] atomic force microscopy (AFM), [7] and other techniques allowing resolution to be reduced to the atomic scale can help realize atomic-scale world exploration. This is the starting point of the nanotechnology era; since its inception, this technology has changed the nature of almost every human-made object. Six decades after Richard Feynman's lecture, we find that there is still plenty of room at the bottom, through the incorporation of nanophotonics. [8] To elucidate: quantum plasmonics has emerged as an attractive research field in new nanophotonics; research is underway to reveal and accurately describe the quantum nature of electrons at the bottom of extremely confined nano-or sub-nanometer scale materials, using light. [9,10] By exploring the quantum mechanical interactions of matter with light (in particular, using the coherent interactions between the plasmonic cavity and the material), [11][12][13][14][15][16][17][18] these efforts seek to establish new frontiers in information processing technology and to satisfy the everincreasing requirements for speed and capacity in quantum computing, quantum cryptography, and quantum metrology. They might also suggest research fields beyond this, involving the ultimate miniaturization of photonic components and the extreme limits of the light-matter interaction. These advantages may help solve some fundamental problems of electronics, such as those of bandwidth, frequency, and energy consumption. [19] In this review, we describe recent developments in the research of exotic materials capable of mediating quantum plasmonics and inducing quantum energy transport. We briefly provide classical and quantum descriptions of matter, from the bulk, nano, and cluster scales down to atomic matter, exploring the band structures via their optical responses. By considering a single nanoplasmonic material, we describe the theoretical and experimental findings pertaining to assembled nanoplasmonic structures, in the context of the plasmonic gap distance and the type of advanced functional material. The plasmonic gap herein refers to a nanometer or sub-nanometer gap that transports (couples, tunnels, exchanges, confines) electromagnetic energy between plasmonic resonators. Advanced functional materials within an extremely confined metallic resonator are described; these include air/vacuum, aliphatic and conjugated molecules, 2D materials, organic and inorganic materials with At the interfaces of metal and dielectric materials, strong light-matter interactions excite surface plasmons; this allows electromagnetic field confinement and enhancement on the sub-wavelength scale. Such phenomena have attracted considerable interest in the field of exotic material-based nanophotonic research, with potential applications including nonlinear spectroscopies, information processing, single-molecule sensing, organic-molecule devices, and plasmon chemistry. These innovative plasmonics-based technologies can meet the ever-increasing demands for speed and ca...

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Section: Plasmon-emitter Coupling From 2d Materials To Organic and Inorganic Materials In Plasmonic Gapmentioning

confidence: 99%

Quantum Plasmonics: Energy Transport Through Plasmonic Gap

2021

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“…1 b. Actually, this structure was selected since 2D grating acts like a Bragg reflector due to its bandgap in reflection spectrum in visible regim 15 , 16 as well as providing a good surface lattice resonance because of gold nanorods at the interface of each unit cell. For investigating the effect of scorpion venom on stimulation of nervous system in humans҆ neurons in transmission measurement setup, fluidic channel was required according to Fig.…”

Section: Methodsmentioning

confidence: 99%

Detection of scorpion venom by optical circular dichroism method

Mazhdi

Hamidi

2021

Sci Rep

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Various efforts have been made to detect minimum amounts of any toxic materials in water or the neurotoxic effect of venom (Odontobuthus Doriae Scorpion) in the human’s blood serum nerve by high-sensitivity, accurate, and low-cost sensors in order to enhance life style. Therefore, the present study was done to investigate reliability of two-dimensional plasmonic structure and circular dichroism (CD) in toxic samples in order to measure and determine venom concentrations and its neurotoxic effect on humans҆ blood serum Neurotransmitter analytes. Our results confirmed dependency of CD signal to neurotoxic effect of venom concentrations and good sensitivity of this sensor with the help of achiral plasmonic structure.

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“…Nowadays, one of the significant issues in nanoscience studies is the enhancement and tunability of strong light-matter interactions [1] due to the direct impact in fields of Bose-Einstein condensation of exciton-polariton, [2][3][4] lasing, [1,5] quantum vortices, [6] superfluidity, [7,8] entangled photon pairs, [9] polariton bistability, [10] and also exciton-plasmon coupling. [11][12][13] According to the importance of the exciton-plasmon coupling, new hybrid systems can arise when the plasmonic structures combine with the excitonic ones as a plexcitonic [14][15][16] systems in which various coupling regimes can be observed by changing the optical properties of the plasmonic and excitonic mediums. The plexciton possess both optical properties of plasmon and exciton modes to have attractive applications in molecular and material science such as spectroscopy, [17,18] thresholdless lasing, [19] photoswitching, [20,21] solar cells, [22] bioimaging, [23] cancer detection, [24,25] plasmonic transistors [26] and modulators, [27] military and civilian fields, [28] optical memories, [29] quantum information processing, [30] and so on.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, one of the significant issues in nanoscience studies is the enhancement and tunability of strong light–matter interactions [ 1 ] due to the direct impact in fields of Bose–Einstein condensation of exciton–polariton, [ 2–4 ] lasing, [ 1,5 ] quantum vortices, [ 6 ] superfluidity, [ 7,8 ] entangled photon pairs, [ 9 ] polariton bistability, [ 10 ] and also exciton–plasmon coupling. [ 11–13 ]…”

Section: Introductionmentioning

confidence: 99%

Strong Exciton–Plasmon Coupling in Waveguide‐Based Plexcitonic Nanostructures

Mahinroosta

Hamidi

2020

Physica Status Solidi (b)

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A new 2D plexcitonic structure based on coupled‐resonator optical waveguides is demonstrated to enhance light–matter interactions in the J‐aggregate molecules coupled to the plasmonic resonator. For this purpose, four different plexcitonic structures are defined by adjusting the coverage of dye medium over the plasmonic structures and applying forward or backward illumination direction, which are examined by the finite difference time domain method. The results show that several parameters could be used to sweep plasmon–exciton coupling in the weak, intermediate, and strong coupling regimes such as the type of structures (single or array of nanodisks), the radius of nanodisks, the direction of the incident light, and the concentration of J‐aggregate molecules. From the presented results, there are remarkable values for Rabi splitting by tuning these parameters, and it is achieved that the sample with coverage of dye in the style of the plasmonic pattern in backward illumination offers higher strength of the plasmon–exciton coupling, and then Rabi splitting is about 670 meV for the radius set to 90 nm. This amount of splitting in this new kind of plexcitonic structure can open new insight in low cost and efficient hybrid structures.

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Exciton-plasmon coupling in two-dimensional plexitonic nano grating

Cited by 23 publications

References 31 publications

Quantum Plasmonics: Energy Transport Through Plasmonic Gap

Quantum Plasmonics: Energy Transport Through Plasmonic Gap

Detection of scorpion venom by optical circular dichroism method

Strong Exciton–Plasmon Coupling in Waveguide‐Based Plexcitonic Nanostructures

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