Article
Optics
Tatjana Gric, Edik Rafailov
Summary: In this study, we investigate the propagation of surface plasmon polaritons at the interface of metal-free metamaterial with anisotropic inclusions. By incorporating anisotropic semiconductor sheets into the structure, the anisotropy effect of conventional nanostructured metamaterial is enhanced, offering a wide range of tunability features and control over the propagation length of surface plasmon polaritons.
Article
Physics, Multidisciplinary
M. Taghadosi
Summary: This work theoretically investigates the propagation of surface plasmons in a quantum collisional semiconductor plasma using the quantum hydrodynamic model. The general dispersion equation of surface plasmons is derived and solved, taking into account collisional effects and quantum tunneling of electrons and holes. It is found that collisions play a significant role in the decay or growth of surface plasmons. Additionally, the quantum tunneling of electrons and holes is shown to increase the phase velocity, group velocity, and growth rate of instability. The growth rate of instability is also decreased with the increase of the ratio of hole density to electron density and the ratio of electron effective mass to hole effective mass.
WAVES IN RANDOM AND COMPLEX MEDIA
(2023)
Article
Physics, Fluids & Plasmas
Bahaa F. Mohamed, Rehab A. Albrulosy
Summary: This study examines the excitation of electrostatic high frequency surface waves (SWs) in semi bounded magnetized plasma using a quantum hydrodynamic (QHD) model. Various quantum effects including recoil effect, Fermi degenerate pressure and exchange-correlation potential are considered. A general analytical expression for the dispersion relation is derived using the linearized QHD model and Poisson's equation in the presence of a static magnetic field. The study finds that exchange and correlation effects decrease the other quantum effects and shift the wave frequency to lower frequencies. It also shows that the group velocities of small wavelength modes are very large with higher quantum effects, while for long wavelength modes they are higher with small quantum effects. The wide range of applications in various fields makes SW investigation an important area of quantum research.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Materials Science, Ceramics
Suyue Jin, Huiping Gao, Hao Zhang, Feng Xu, Ying Sun, Wenwu You, Gencai Pan, Huafang Zhang, Zhenlong Zhang, Yanli Mao
Summary: The research successfully enhanced the upconversion luminescence of rare-earth ions by adjusting the absorption characteristics and morphology of semiconductor nanocrystals. By fabricating Glass/NaYF4: Yb3+, Er3+/TiO2: W@SiO2 layered structure films, the green and red light emission intensities were enhanced by approximately 15.9 and 17.8 times, respectively.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Lisheng Zhang, Yiyuan Zhang, Xueyan Wang, Duan Zhang
Summary: The study focused on preparing an Au nanoporous array photocatalyst driven by surface plasmons, investigating the redistribution of excited carriers and processes, and introducing sodium borohydride for reverse photocatalysis. The research aims to enable drawing of graphics and achieving information encryption on the micro/nano scale.
Article
Physics, Fluids & Plasmas
Roberto A. Colon Quinones, Thomas Carlton Underwood, Mark A. Cappelli
Summary: "The study investigates the Ku-band tunability of a gas plasma resonator generated by laser-induced gas breakdown, achieved through adjusting gas pressure and laser pulse energy. Microwave scattering characteristics of the plasma resonator were obtained by loading a waveguide with a single plasma element. Optical imaging and analysis of complex transmission waveforms demonstrated the dynamic expansion of the plasma and its potential applications in all-plasma metamaterials with tunable opacity and resonance frequency."
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Feng Xu, Ying Sun, Huiping Gao, Suyue Jin, Zhenlong Zhang, Huafang Zhang, Gencai Pan, Miao Kang, Xinqi Ma, Yanli Mao
Summary: By synthesizing NaCsWO3@NaYF4@NaYF4:Yb,Er nanoparticles to enhance the UCL intensity, which were then used in PSCs, the power conversion efficiency of highly efficient PSCs reached 18.89%, showing a significant improvement compared to the control group.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Lin Zhu, Zhu Mao, Peng Li, Menglei Xu, Zhen Meng, Lei Chen, Bing Zhao
Summary: This study discusses the influence of controllable carriers on localized surface plasmon resonance (LSPR) in (Ag)x(MoO3)y composites, as verified by SERS testing and UV-Vis-NIR absorption spectra. It was found that the LSPR absorption wavelength can be easily tuned from 950 to 735 nm by changing the sputtering power of MoO3. The relationship between carrier density and SERS intensity change caused by electromagnetic enhancement was investigated using Hall effect measurements. These findings provide insights into tunable LSPR and the contribution of electromagnetic effects to SERS.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Multidisciplinary
Chunlei Sun, Caiyan Qin, Han Zhai, Bin Zhang, Xiaohu Wu
Summary: Plasmonic nanofluids exhibit excellent optical properties in solar energy absorption and can enhance absorption efficiency by adjusting the structure and performance of nanoparticles. Specially designed plasmonic Ag dimer nanoparticles have a broader absorption range and show great potential for application in solar thermal conversion technology.
Article
Chemistry, Multidisciplinary
Chun-Yuan Wang, Yungang Sang, Xinyue Yang, Soniya S. Raja, Chang-Wei Cheng, Haozhi Li, Yufeng Ding, Shuoyan Sun, Hyeyoung Ahn, Chih-Kang Shih, Shangjr Gwo, Jinwei Shi
Summary: This study demonstrates a strong coupling system achieved by coupling localized surface plasmon modes. Under specific conditions, a root N scaling of Rabi splitting energy is observed, along with a confirmed giant Rabi splitting in the visible spectral range. Additionally, the coupling strength reaches the ultrastrong coupling regime in some cases, representing about 10% of the mode energy.
Review
Biochemistry & Molecular Biology
Zhimin Yuan, Xianglin Zhu, Zaiyong Jiang
Summary: With the development of the world economy and global industrialization, the demand for energy is increasing, leading to excessive carbon dioxide emissions. CO2 hydrogenation technology is considered a potential solution, as it can convert CO2 into valuable chemicals. Metal/semiconductor catalysts have shown good activity in carbon dioxide hydrogenation reactions and have attracted widespread attention. This review summarizes recent research on metal/semiconductor catalysts for photocatalytic CO2 hydrogenation, providing guidance for the design of highly active catalysts and looking forward to future developments.
Article
Physics, Fluids & Plasmas
Myoung-Jae Lee, Young-Dae Jung
Summary: The dissipation of ion-acoustic surface waves in a fully ionized and semi-bounded plasma was studied, considering non-zero ion temperature and ion-ion collisions in the dielectric permittivity. The damping rate calculated includes collisionless Landau damping and collisional dissipation, with significant collisionless damping observed at wavelengths larger than the electron Debye length. Collisional dynamics and ion temperature dominate wave damping at wavelengths smaller than the electron Debye length.
PLASMA PHYSICS AND CONTROLLED FUSION
(2021)
Article
Chemistry, Physical
Sweety Biswasi, Deepshikha Gogoi, Arup R. Pal
Summary: A high performance and operationally stable thin film transistor device has been successfully fabricated using an organic framework implemented with rubrene crystals and gold nanoparticles. The device demonstrates a one-step process to synthesize crystalline rubrene gold nanocomposite and serves as a plasmon transistor for plasmon resonance energy detection. The device exhibits excellent p-channel characteristics and high responsivity at the peak wavelength of plasmonic absorption.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Sweety Biswasi, Deepshikha Gogoi, Arup R. Pal
Summary: A high performing and operationally stable thin film transistor device has been fabricated successfully with organic framework implemented by synthesis of rubrene crystals with gold nanoparticles. The device shows low-light responsiveness and p-type characteristics, with excellent p-channel characteristics demonstrated by maximum field effect mobility and responsivity reached. The ability to collect hot carriers from nanostructures of Au NPs contributes to increased drain current and modulation of channel conductivity.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Sweety Biswasi, Deepshikha Gogoi, Arup R. Pal
Summary: In this study, a high-performance and operationally stable thin film transistor device was successfully fabricated by synthesizing rubrene crystals with gold nanoparticles to form an organic framework. A novel approach for synthesizing the active material in the form of crystalline rubrene composite (CRC) was adopted, showing potential for a wide range of applications due to its versatile plasmonic nanostructures.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Multidisciplinary
A. P. Misra, M. Shahmansouri, N. Khoddam
Summary: The theory of surface electromagnetic waves at optical frequencies along the interface of an isotropic metallic plasma and a uniaxial crystal is revisited using the Drude-Lorentz model for the complex dielectric material permittivity. Numerical studies reveal that the characteristics of SEMWs are significantly modified compared to results with the Drude model, especially in the short-wavelength spectra and with a small deviation of the orientation of the optical axis. Excitation of such SEMWs may have novel applications in transporting EM signals in a specified direction at optical frequencies.
Article
Engineering, Aerospace
T. D. Kaladze, A. P. Misra, Animesh Roy, Debjani Chatterjee
Summary: This study investigates the nonlinear propagation of internal gravity waves in the weakly ionized, incompressible Earth's ionosphere using the fluid theory approach. The effects of the terrestrial inhomogeneous magnetic field in the weakly ionized ionospheric layers are considered. It is shown that the presence of Pedersen conductivity can cause the decay and disappearance of solitary dipolar vortices in the ionospheric conducting fluids.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Geochemistry & Geophysics
Debjani Chatterjee, A. P. Misra
Summary: The study revisited the nonlinear theory of acoustic-gravity waves in the atmosphere taking into account the effects of the Coriolis force, identifying the coupling between high-frequency acoustic-gravity waves and low-frequency internal gravity waves. The Earth's angular velocity enhances the frequency of internal gravity waves and significantly modifies the nonlinear coupling between acoustic-gravity waves and internal gravity waves.
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
(2021)
Correction
Physics, Fluids & Plasmas
Amar P. Misra, Debjani Chatterjee, Gert Brodin
PHYSICS OF PLASMAS
(2022)
Article
Physics, Multidisciplinary
A. Abdikian, M. Eghbali, A. P. Misra
Summary: The theory of low-frequency, long wavelength, electrostatic drift ion-acoustic waves in a nonuniform rotating magnetoplasma with two temperature superthermal electrons is investigated. In the linear limit, the coupling of these waves and drift waves by the density inhomogeneity generates a new wave mode that depends on the density gradient, rotational frequency, and spectral indexes of the superthermal electrons. In the nonlinear regime, an evolution equation for the drift ion-acoustic waves is derived, and its exact solitary and periodic wave solutions are obtained. Numerical analysis shows that these solutions are significantly influenced by the background density gradient, superthermality of electrons, and Coriolis force.
Article
Physics, Fluids & Plasmas
H. H. Pajouh, M. Shahmasouri, M. -J. Lee, Y. -D. Jung
Summary: The basic features of surface dual modes on the plasma slab and their damping rates are investigated in this study. The functional perturbation method is used to evaluate the integral of kinetic wave dispersion relation and derive the wave frequency as well as the relevant Landau damping decrement of the electrostatic surface modes. The influence of ion temperature and geometrical effects on the damping rate of surface dual modes is examined. It is found that the damping rate increases with ion temperature and the propagation of surface waves in plasma slab is more difficult compared to semi-infinite plasma due to the interaction with additional boundary conditions.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2022)
Article
Physics, Fluids & Plasmas
Amar Prasad Misra, Animesh Roy, Debjani Chatterjee, Tamaz D. Kaladze
Summary: The theory of low-frequency internal gravity waves (IGWs) is reexamined in the stable stratified weakly ionized Earth's ionosphere. The formation and dynamic evolution of dipolar vortex structures, as well as the emergence of chaos in wave-wave interactions, are studied with and without the presence of Pedersen conductivity. The latter is shown to inhibit the formation of solitary vortices and the onset of chaos.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2022)
Article
Physics, Multidisciplinary
Jyoti Turi, A. P. Misra
Summary: This study examines the generation and instabilities of magnetohydrodynamic (MHD) waves in rotating plasmas in the galaxy, taking into account the effects of magnetic fields, self gravity, diffusion-convection of cosmic rays, and gas and cosmic-ray pressures. The coupling of different types of waves and their stability are significantly modified by the rotation and diffusion of cosmic fluids. The deviation of the rotation axis from the direction of the static magnetic field leads to coupling between Alfven waves and classical Jeans modes.
Article
Astronomy & Astrophysics
Sima Roy, Amar P. Misra
Summary: The evolution of electromagnetic solitons in relativistic degenerate dense astrophysical plasmas is studied, and the conditions for the existence and stability of moving solitons are analyzed. The results show that the stability regions shift due to relativistic degeneracy, the fraction of classical to degenerate electrons, and the EM wave frequency. The stability of moving solitons depends on the degree of electron degeneracy, the soliton eigenfrequency, and the soliton velocity.
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
(2022)
Article
Physics, Fluids & Plasmas
Rupak Dey, Gadadhar Banerjee, Amar Prasad Misra
Summary: This study investigates the propagation of ion-acoustic solitary waves with arbitrary amplitude in unmagnetized, collisionless, homogeneous electron-positron-ion plasmas with finite temperature degeneracy. The results show that the wave dispersion is significantly modified by the presence of positron species and the effects of finite temperature degeneracy of electrons and positrons. In the nonlinear regime, Sagdeev's pseudopotential approach is utilized to analyze the nonlinear IA-SWs in terms of parameters related to the finite temperature degeneracy, background number densities, and thermal energies. It is found that both subsonic and supersonic IA-SWs can exist in partially degenerate e-p-i plasmas, which is different from classical electron-ion plasmas.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2022)
Editorial Material
Physics, Multidisciplinary
Amar Prasad Misra, Amol Holkundkar
FRONTIERS IN PHYSICS
(2023)
Article
Mathematics, Applied
Subhrajit Roy, Animesh Roy, Amar P. P. Misra
Summary: This study investigates the nonlinear dynamics of circularly polarized dispersive Alfven wave envelopes coupled to driven ion-sound waves in a uniform magnetoplasma. A low-dimensional dynamical model is proposed to describe the nonlinear wave-wave interactions by restricting the wave dynamics to a few harmonic modes. The existence of periodic, quasi-periodic, and chaotic states is established by analyzing Lyapunov exponent spectra, bifurcation diagrams, and phase-space portraits. The chaotic motion predicted in this low-dimensional model can be a prerequisite for the onset of Alfvenic wave turbulence observed in higher dimensional models relevant to the Earth's ionosphere and magnetosphere.
Article
Physics, Multidisciplinary
Debjani Chatterjee, Amar P. Misra, Samiran Ghosh
Summary: The influence of neutrino flavor oscillations on magnetohydrodynamic (MHD) waves and instabilities in neutrino-beam driven magnetoplasmas is studied. The authors derive a general dispersion relation using the neutrino MHD model, which shows the resonant interactions between MHD waves, neutrino beam, and neutrino flavor oscillations. It is found that neutrino flavor oscillations contribute to the wave dispersion and enhance the instability of oblique magnetosonic waves. However, the shear-Alfven wave remains unaffected. This enhancement of magnetosonic wave instability can be significant for long-wavelength perturbations in high neutrino number density and/or strong magnetic field regimes, providing a convincing mechanism for type-II core-collapse supernova explosion.
Article
Mechanics
Sima Roy, A. P. Misra, A. Abdikian
Summary: In this study, we investigated the modulational instability of a linearly polarized electromagnetic wave envelope in an intermediate regime of relativistic degenerate plasmas at a finite temperature. By deriving a one-dimensional nonlinear Schodinger equation, we found that the stability of the wave depends on the values of the EM wave frequency and the parameter xi(e). We also discovered that increasing the values of beta(e) and xi(e) can significantly reduce the instability growth rate. Additionally, we analyzed the profiles of various types of solitons and discussed their characteristics in different regimes of beta(e).
Article
Physics, Multidisciplinary
T. D. Kaladze, A. P. Misra
Summary: The study investigates the impact of thermal expansion of the Earth's atmosphere on the stability of vertical stratification of fluid density and temperature. It demonstrates that this influence leads to the instability of incompressible flows. By modifying the thermal expansion coefficient, a new expression for the Brunt-Vaisala frequency is derived, and a critical value for the thermal expansion coefficient that triggers the instability is revealed.
