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Narrowing the Linewidth of the Plasmonic Cavities for Strong Light-Matter Coupling
No full textLinewidths of plasmonic cavities play an important role in strong light-matter coupling. Here, we report an extensive study of reducing the linewidths of various plasmonic cavities via substrate engineering. The engineered substrate was fabricated by depositing a 2 nm SiO2 film on a 100 nm silver film, which was itself deposited on the SiO2/Si wafer substrate. The plasmonic bowtie cavities show a linewidth of 340 meV on SiO2/Si substrate, which gets reduced to 115 meV on the engineered insulator-metal-insulator (IMI) substrate. Further, silver nanocubes and gold nanospheres exhibit a reduction in linewidths from ≈ 490 to ≈ 157 meV and from ≈ 409 to ≈ 218 meV, respectively. Our study reveals that silver nanoparticles exhibit a larger reduction in the linewidths compared to gold nanoparticles. Further, within silver nanoparticles, the dimer structure exhibits similar linewidth reduction as single nanoparticles. Using these reduced linewidths, we further demonstrated strong light-matter coupling by integrating these plasmonic nanoparticles on the engineered IMI substrate with the semiconductor quantum dots (QDs). The dark-field scattering spectra of the QD-coupled system exhibit Rabi splitting ≈ 277 meV for silver nanocubes and ≈ 156 meV for gold nanospheres
Self-healing Coal fly ash Construction Brick for CO2 and Dust Adsorption
No full textAs a common byproduct of thermal power plants, coal fly ash (CFA) is often dumped in landfills, where it can cause environmental damage. As a result, in this work, porous construction bricks were made utilizing a byproduct of a thermal power plant, coal fly ash, and baking yeast to absorb carbon dioxide and dust. Yeast was utilized for pore formation, CFA detoxifying, and crack repair. The physical properties of prepared porous bricks are characterized using .X-ray diffraction (XRD), scanning electron microscopy (SEM), confocal microscopy (CM), and Fourier transform infrared spectroscopy (FTIR) According to the XRD analysis, the brick is made up of quartz, hematite, and mullite. The Porous Brick absorbed 36% of water and 2.5% of dust. The porous fly ash brick has demonstrated superior strength (17.5MPa) and load bearing capacity as compared to traditional bricks in compressive testing. For analysis of the fly ash bricks' ability to absorb carbon dioxide, a gas chromatograph equipped with a Flame Ionization Detector (FID) was utilized. A high adsorption capability of 94.69 percent of CO2 was found for the produced geopolymer bricks. The yeast involvement promote and facilitates the self healing ability of the coal flay ash brick (CFB)
SEPSIS: I Can Catch Your Lies – A New Paradigm for Deception Detection
No full textDeception is the intentional practice of twisting information. It is a nuanced societal practice deeply intertwined with human societal evolution, characterized by a multitude of facets. This research explores the problem of deception through the lens of psychology, employing a framework that categorizes deception into three forms: lies of omission, lies of commission, and lies of influence. The primary focus of this study is specifically on investigating only lies of omission. We propose a novel framework for deception detection leveraging NLP techniques. We curated an annotated dataset of 876,784 samples by amalgamating a popular large-scale fake news dataset and scraped news headlines from the Twitter handle of "Times of India", a well-known Indian news media house. Each sample has been labeled with four layers, namely: (i) the type of omission (speculation, bias, distortion, sounds factual, and opinion), (ii) colors of lies (black, white, grey, and red), and (iii) the intention of such lies (to influence, gain social prestige, etc) (iv) topic of lies (political, educational, religious, racial, and ethnicity). We present a novel multi-task learning [MTL] pipeline that leverages the dataless merging of fine-tuned language models to address the deception detection task mentioned earlier. Our proposed model achieved an impressive F1 score of 0.87, demonstrating strong performance across all layers including the type, color, intent, and topic aspects of deceptive content. Finally, our research aims to explore the relationship between lies of omission and propaganda techniques. To accomplish this, we conducted an in-depth analysis, uncovering compelling findings. For instance, our analysis revealed a significant correlation between loaded language and opinion, shedding light on their interconnectedness. To encourage further research in this field, we are releasing the SEPSIS dataset and code at https://huggingface. co/datasets/ankurani/deception
Comparison and improvement of the energy efficiency of membrane technologies for brine separation
No full textMon R2: A Hub-Filament System with an Infrared Bubble at the Hub Center
No full textA multiwavelength, multiscale study of the Mon R2 hub-filament system (HFS) reveals a spiral structure, with the central hub containing more mass than its filaments. C18O(1-0) emission detected by the Atacama Large Millimeter/submillimeter Array (ALMA) reveals several accreting filaments connected to a molecular ring (size ∼0.18 pc × 0.26 pc). The molecular ring surrounds the infrared (IR) ring (size ~0.12 pc × 0.16 pc), which is not usually observed. The IR ring encircles IR-quiet regions and a population of embedded near-IR sources, including the massive stars IRS 1 and IRS 2. ALMA HNC(3-2) line data reveal a mirrored B-shaped feature (extent ∼19,000 au × 39,000 au) toward the eastern part of the molecular ring, suggesting expansion at ~2.25 km s−1. Distinct HNC substructures in both redshifted and blueshifted velocity components are investigated toward the B-shaped feature. The presence of these braid-like substructures in each velocity component strongly suggests instability in photon-dominated regions. A dusty shell-like feature (extent ~0.04 pc × 0.07 pc; mass ~7 M⊙) hosting IRS 1 is identified in the ALMA 1.14 mm continuum map, centered toward the base of the B-shaped feature. The IR and dense molecular rings are likely shaped by feedback from massive stars, driven by high pressures of between 10−8 and 10−10 dyn cm−2, observed within a 1 pc range of the B0 zero-age main-sequence star powering the ultracompact H ii region. Overall, these outcomes support the idea that the Mon R2 HFS transitioned from IR-quiet to IR-bright, driven by the interaction between gas accretion and feedback from massive stars
Mordell-Tornheim zeta functions and functional equations for Herglotz-Zagier type functions
No full textThe Mordell-Tornheim zeta function and the Herglotz-Zagier function F(x) are two important functions in Mathematics. By generalizing a special case of the former, namely Θ(z,x), we show that the theories of these functions are inextricably woven. We obtain a three-term functional equation for Θ(z,x) as well as decompose it in terms of the Herglotz-Hurwitz function Φ(z,x). This decomposition can be conceived as a two-term functional equation for Φ(z,x). Through this result, we are not only able to get Zagier's identity relating F(x) with F(1/x) but also a two-term functional equation for Ishibashi's generalization of F(x), namely, Φk(x), which has been sought after for over twenty years. We further generalize Θ(z,x) by incorporating two Gauss sums, each associated to a Dirichlet character, and decompose it in terms of an interesting integral which involves the Fekete polynomial as well as the character polylogarithm. This result gives infinite families of functional equations of Herglotz-type integrals out of which only two, due to Choie and Kumar, were known so far. The first one among the two involves the integral J(x) whose special values have received a lot of attention, more recently, in the work of Muzzaffar and Williams, and in that of Radchenko and Zagier. Analytic continuation of our generalization of Θ(z,x) is also accomplished which allows us to obtain transformations between certain double series and Herglotz-type integrals or their explicit evaluations
Viable scaling mechanism ensuing anomalous Hall effect in Si/Ni multilayers from 2 K-300 K
No full textA systematic study of the scaling mechanisms driving the anomalous Hall effect (AHE) in Si/Ni multilayers was conducted from 2 K to 300 K on [Si(40Å)/Ni(tNiÅ)]20 multilayers. Structural analysis revealed polycrystalline Ni layers and amorphous Si layers. As tNi decreased, Ni nanocrystallite size reduced, while the surface-to-volume ratio and Si/Ni interface roughness increased. Multilayers with tNi≥40Å exhibited ferromagnetic behavior, while those with tNiNi also increased longitudinal resistivity due to enhanced interface roughness, higher surface-to-volume ratio, and increased tunneling between Ni nanocrystallites. AHE studies showed that Hall resistance peaked with decreasing tNi but declined for tNi<40Å, due to superparamagnetism. Skew scattering dominated Hall resistance enhancement at all temperatures, but as the temperature increased from 2 K to 300 K, a transition from skew scattering to the side-jump mechanism was observed
