Electronic Levels Research Articles

Formula omitted]-type doping modulation of double GaAs/AlGaAs quantum wells

Utilizing the FEniCS Project and Python programming, we conduct a comprehensive characterization and analysis of the n-type doped layer in double quantum wells made of GaAs and featuring AlGaAs barriers through self-consistent Schrödinger–Poisson simulations. The main findings reveal that the dimensions of the system and the doping layer significantly influence the electronic properties, energy levels, Fermi energy, wave functions, and electron density. Upon doping the intermediate barrier, electrons exhibit notable migration from the doping region to the quantum well zones, particularly pronounced for thin barriers. Conversely, for large barriers, the emergence of a new well, akin to a real quantum well, imposes constraints on the movement of charge carriers. The electron density varies in accordance with the impurity density, which assumes significant importance as the quantum well and barrier width are reduced. The Fermi energy level, which play a crucial role in semiconductors, rises with a decrease in quantum well width or an increase in doped layer width and n-type doping density, remaining almost unaffected by variations in barrier width.

Observations on Valence‐Band Electronic Structure and Surface States of Bulk Insulators Based on Fast Stabilization Process of Sample Charging in UPS

AbstractThe valence‐band electronic structure is one of the most basic properties of materials and ultraviolet photoelectron spectroscopy (UPS) is the most commonly used technique for its measurement. To obtain credible UPS spectra on insulator surfaces, eliminating the charging effects at the surfaces is essential but is very difficult. Here, a reliable measurement for the valence‐band structure of bulk insulators is shown. It has been observed that, during UPS measurements without any charge compensation, the charging on irradiated insulator surfaces reaches its steady state very quickly and the fluctuation of the charging‐induced surface potential is very small. Therefore, the whole UPS spectrum undergoes just a parallel shift and can be calibrated by comparison with the corresponding X‐ray photoelectron spectroscopy (XPS) spectrum even though XPS often has a poorer resolution than UPS. From the calibrated valence‐band spectra, it is found that noticeable electronic energy levels (i.e., the “surface states”) exist in the bandgap, and based on the density of states (DOS) calculations, the surface states are attributed to the truncation of the bulk periodic structure at the surfaces. This work is anticipated to provide a way to obtain the valence band structure and the surface states of bulk insulators which play crucial roles in many physical processes.

PLIF Flame Study on the Qualitative and Quantitative Measurement of OH Species for Conventional and Alternative Jet Fuels; Experimental and Theoretical Investigations

ABSTRACT The hydroxyl molecule is one of the most important intermediate species in the chemistry of combustion processes and plays an important role in the chemical reactions of a hydrocarbon-air flame. However, investigation on a laser-based quantitative measurement of OH in heavy liquid hydrocarbon flames remains very scarce. Thus, in this study, OH radicals were measured qualitatively with the aid of planar laser-induced fluorescence in atmospheric pressure studies of burner stabilized laminar flames of kerosene and alcohol-to-jet (ATJ) fuel. These qualitative profiles were then put on a quantitative basis by analysis of the impact of temperature on the Boltzmann distribution of OH over the ground electronic state rotational energy levels and the use of a simple methane reference flame and its modeling using ANSYS Chemkin-Pro. The quantitative profiles in turn were used to validate the developed chemical kinetic mechanisms of kerosene and ATJ combustion. An experimental apparatus has been developed to investigate the temperature profile and the OH relative amounts of kerosene and ATJ laminar flames in an optimized premixed flat flame burner, under three different air/fuel ratio conditions. Fine wire type thermocouples were applied to provide reliable temperature profiles for the fuel flames. In general, reasonable agreement were observed between the experimental OH results and the simulations for the target fuel flames in the case of kerosene, while a higher peak value of OH was predicted in the ATJ model output compared to the PLIF derived data.

Electron transfer enhanced catalytic activity of nitrogen doped reduced graphene oxide supported CuCo2O4 towards the fast reduction of 4-nitrophenol in water

There has been a growing interest in the design and development of graphene based composite materials with superior performances for environmental catalytic applications. But in most of the studies the synthesis conditions require elevated temperatures and expensive working setups (high temperature furnaces, autoclaves, inert atmosphere conditions etc.). In this reported work, the nitrogen doped reduced graphene oxide supported CuCo2O4 (NG/CuCo2O4) composites were prepared through a simple one pot synthesis method under mild conditions (∼95 °C and air atmosphere) and successfully employed as catalysts for the reduction of toxic 4-nitrophenol (4NP). The characterization results revealed the successful formation of NG/CuCo2O4 composites with a possible charge transfer interaction between nitrogen doped reduced graphene oxide support of CuCo2O4. The NG/CuCo2O4 hybrids exhibited robust catalytic activity in 4NP reduction with an activity factor of 261.5 min−1 g−1. A 4NP conversion percentage which is as high as 99.5% was achieved within 11 min using the NG/CuCo2O4 catalyst. The detailed kinetic analysis confirmed the Langmuir-Hinshelwood model for the NG/CuCo2O4 catalysed 4NP reduction. The nitrogen doped reduced graphene oxide support modified the electronic levels of CuCo2O4 nanoparticles through electron transfer interactions and enhanced the catalytic activity of CuCo2O4 in NG/CuCo2O4 through improved adsorption of reactant ions and effective generation of active hydrogen species. The good reusability and stability along with profound activity of NG/CuCo2O4 catalyst makes it a promising material for wide scale catalytic applications.

Atomic level dispersed nickel coupled with silver nanoparticle to boost the efficiency of CO2 conversion to CO via spin electrons regulation

Modulating the electronic configuration by coupling multi-scale active sites for electrocatalytic conversion of CO2 to CO is extremely challenging in terms of structural analysis and mechanism elucidation. Herein, a catalyst NiAD/AgNPs@CN with both atomic-level dispersed Ni and Ag nanoparticles on N-doped carbon substrate has been designed to reveal the true active sites and catalytic mechanism in complex materials. NiAD/AgNPs@CN exhibits CO Faraday efficiency (FECO) of 99.97% at −0.88 V (vs. RHE) in H-type cell and 91.77% FECO with a high current density of 79.70 mA/cm2 in flow cell. DFT calculations show that the tiny change in the energy level of spin electrons at atomic sites has a significant impact on the CO2 activation. The regulation of atomic Ni on Ag sites is the main reason for improving CO2RR performance. This work gives a new understanding on the catalytic mechanism of composite materials structured by atomic-level dispersed metal and nanoparticles.

Effect of Codoping Zinc Oxide Nanoparticles with Sulfur and Nitrogen on Its Energy Bandgap, Antioxidant Properties, and Antibacterial Activity

Zinc oxide nanoparticles (ZnO-NPs) are used in various fields such as industrial, environmental remediation, catalytic, and antibacterial applications. However, their ability to absorb visible light is limited due to their high-energy bandgap and fast electron-hole recombination, which restricts their use. To enhance the efficiency of ZnO-NPs in medical and other applications, surface functionality can be modified through doping. Here, we investigated the effects of S and N doping on the energy bandgap of ZnO-NP and their antimicrobial and antioxidant activities. The results showed that the optical bandgap energy of pure ZnO-NPs was 2.98 eV while that of 6% N-ZnO, 4% S-ZnO, and S4-N6-ZnO was 2.78, 2.69, and 2.63 eV, respectively. The energy bandgap reduction is attributed to the changes in the electronic level of zinc oxide as the result of doping. The crystal size of pure ZnO-NPs, 6% N-ZnO, 4% S-ZnO, and S4-N6-ZnO was 29.06, 27.05, 29.02, and 25.06 nm, respectively, as calculated from XRD data using FWHM. Following the bandgap and particle size reduction, the antimicrobial activities of the dual-doped ZnO-NPs surpassed that of the pure ZnO-NPs. Moreover, dual doping improved the antioxidant activity of ZnO-NPs from 52.45% to 88.89% for the optimized concentration. Therefore, incorporating S and N as dual dopants can enhance the functionality and efficiency of ZnO-NPs in various fields.

Coherent Electron-Vibron Interactions in Surface-Enhanced Raman Scattering (SERS).

In this Letter we identify coherent electron-vibron interactions between near-resonant and nonresonant electronic levels that contribute beyond standard optomechanical models for off-resonant or resonance surface-enhanced Raman scattering (SERS). By developing an open-system quantum model using first molecular interaction principles, we show how the Raman interference of both resonant and nonresonant contributions can provide several orders of magnitude modifications of the SERS peaks with respect to former optomechanical models and over the fluorescence backgrounds. This cooperative optomechanical mechanism allows for generating an enhancement of nonclassical photon pair correlations between Stokes and anti-Stokes photons, which can be detected by photon-counting measurements. Our results demonstrate Raman enhancements and suppressions of coherent nature that significantly impact the standard estimations of the optomechanical contribution from SERS spectra and their quantum mechanical observable effects.

Solvation model, Vibrational analysis, Electronic level, Non-Covalent interactions and Molecular docking investigations of 6-Chloro-2-(4-Aminophenyl)-1H-Benzimidazole

6-Chloro-2-(4-Aminophenyl)-1H-Benzimidazole compound were synthesized and characterized by SC-XRD, FT-IR, FT-Raman, UV–Vis, 1H NMR, and 13C NMR and analyzed with experimental data. The DFT approach with the B3LYP functional and 6-311++G(d,p) basis set was used to calculate the geometry parameters and wavenumbers of the title compound. Electronic absorption spectra and 1H–13C NMR studies have been computed in gas and solvents (dimethylsulfoxide, chloroform, and H2O) by using the TD-DFT and the IEFPCM solvation model. The HOMO-LUMO energy band gap has also been determined. To identify the electron localization density and weak interactions, the Multiwin-3.8 was subjected to a topological analysis and non-covalent interactions, including ELF, LOL, DORI and ED.Studies of donor–acceptor connections were performed using NBO analysis. To calculate contributions to the molecular orbitals, TDOS was determined. Molecular electrostatic potential (MEP) reveals the chemical reactivity sites for the reaction. The antibacterial activity of the compound has been assessed with a zone of inhibition by the well diffusion method using a panel of selected gram-positive Staphylococcus aureus (MTCC-3160), Enterococcus faecalis (MTCC-3159) and gram-negative Pseudomonas aeruginosa (MTCC-4030), Escherichia coli (MTCC-1667) bacterial strains that have shown better activity than the standard drug (Ciprofloxacin). Finally, molecular docking and pharmacokinetics have been agreed upon to understand the binding energy of the ligand–protein interaction.

Study of infrared quenching in silicide-silicon-silicide structures

Infrared quenching (IR Q) in silicide-silicon-silicide and silicide-silicon-metal structures has been studied. Silicides are obtained through the process of diffusion doping of silicon with manganese atoms. Infrared quenching was detected in the irradiation energy range of 0.31-0.75 eV when illuminated with local light hv≥Eg. Attachment levels for electrons were found: Ec-0.31 eV, Ec-0.38 eV, Ec-0.51 eV. The long-wave limit of photoconductivity (PC) was established to be 0.38 eV by studying the spectral characteristics of silicide-silicon-silicide structures.

Nicotinonitriles as potential inhibitors of α-glucosidase, tyrosinase, and urease enzymes: Synthesis, characterization, in vitro, and in silico studies

In an effort to develop novel enzyme inhibitors with potent activity and high selectivity, a series of nicotinonitrile derivatives was synthesized. Cyano pyridone intermediates undergo nucleophilic substitution reactions with variously substituted phenacyl halides to yield the nicotinonitriles 1–20. All nicotinonitriles exhibited moderate to excellent in vitro enzyme inhibitory activities against α-glucosidase, tyrosinase, and urease. Compound 1 (IC50 = 27.09 ± 0.12 µM) selectively displayed more significant activity than the standard acarbose (IC50 = 40.00 ± 0.70 µM). Compound 1 also showed good urease inhibition (IC50 = 33.04 ± 0.70 µM); however, it exhibited activity less than the standard acetohydroxamic acid (IC50 = 27.00 ± 0.50 µM).Furthermore, the most effective compound of the series against tyrosinase compared to the standard kojic acid (IC50 = 16.9 ± 1.30 µM) was 16 with an IC50 value of 10.55 ± 0.08 µM. In contrast, this compound showed no activity against α-glucosidase and urease. DFT calculations were carried out to analyze electronic transitions and energy levels (HOMO and LUMO) in nicotinonitrile derivatives, offering insights into their chemical reactivity and stability. Molecular docking studies and molecular electrostatic potential (MEP) revealed the interactions of the active compounds with the amino acid residues at the active sites of the enzymes, thereby shedding light on the mechanism of enzyme inhibition. Therefore, compound 1 can be further studied as a promising α-glucosidase and urease inhibitor, while compound 16 is an effective tyrosinase inhibitor.

Shpol’skii effect: new interpretation for the nature of the spectral multiplet structure and Bethe-splitting

New approach to the interpretation of the multiplet structure in the Shpol’skii spectra based on the symmetry consideration of the impurity molecule and crystal matrix is proposed. The reasons and peculiarities of doublet structure formation in the spectra of molecules without inversion center and highly symmetric molecules are considered. It is shown that the structure of electron density distribution in the naphthalene molecule causes a doubly degenerate of the electronic level of its ground state. The calculated data are compared with the experimental results. The main research stages and directions in the field of narrow-line spectroscopy of organic molecules are marked.

First-principles investigation of the Mg, Cu segregation at Al Σ5 (310) and Σ9 (221) symmetrical tilt grain boundaries

The segregation of alien solute atoms at grain boundaries (GBs) in nanocrystalline materials can dramatically affect their macroscopic properties. As important solutes in Al alloys, Mg and Cu atoms have been experimentally observed to segregate at GBs, which would render a significant impact on the material. In this work, first-principles calculations were used to conduct a systematic and comprehensive investigation to reveal the segregation behavior of Mg and Cu atoms at Al Σ5 (310) and Σ9 (221) GBs and its effect on GB properties. The negative segregation energy demonstrates that both Mg and Cu have a strong tendency to segregate to the Al GBs. Moreover, the segregation of Mg and Cu atoms can reduce the GB energy, indicating an increased thermodynamic stability of the GBs. Mechanical properties are explored by a combination of canonical Griffith fracture model with ab-initio tensile test method. Results reveal that the doped Mg will embrittle both GBs due to the elongation of interatomic bonds and depletion of charge density across the GBs. Contrarily, the segregated Cu contributes greatly to enhancing the GB strength by creating strong Cu-Al bonds with surrounding Al at GBs. Besides, the increased tensile separation displacement of GBs with Cu segregation also suggests an improved resistance to fracture, especially the Σ9 (221) GB. This work provides a theoretical understanding for the changes in microscopic properties of Al GBs caused by Mg and Cu segregation from an atomic and electronic level.

Functional nanoporous graphene superlattice

Two-dimensional (2D) superlattices, formed by stacking sublattices of 2D materials, have emerged as a powerful platform for tailoring and enhancing material properties beyond their intrinsic characteristics. However, conventional synthesis methods are limited to pristine 2D material sublattices, posing a significant practical challenge when it comes to stacking chemically modified sublattices. Here we report a chemical synthesis method that overcomes this challenge by creating a unique 2D graphene superlattice, stacking graphene sublattices with monodisperse, nanometer-sized, square-shaped pores and strategically doped elements at the pore edges. The resulting graphene superlattice exhibits remarkable correlations between quantum phases at both the electron and phonon levels, leading to diverse functionalities, such as electromagnetic shielding, energy harvesting, optoelectronics, and thermoelectrics. Overall, our findings not only provide chemical design principles for synthesizing and understanding functional 2D superlattices but also expand their enhanced functionality and extensive application potential compared to their pristine counterparts.

Coupled Electron-Nuclear Dynamics Induced and Monitored with Femtosecond Soft X-ray Pulses in the Amino Acid Glycine.

The coupling of electronic and nuclear motion in polyatomic molecules is at the heart of attochemistry. The molecular properties, transient structures, and reaction mechanism of these many-body quantum objects are defined on the level of electrons and ions by molecular wave functions and their coherent superposition, respectively. In the present contribution, we monitor nonadiabatic quantum wave packet dynamics during molecular charge motion by reconstructing both the oscillatory charge density distribution and the characteristic time-dependent nuclear configuration coordinate from time-resolved Auger electron spectroscopic data recorded in previous studies on glycine molecules [Schwickert et al. Sci. Adv. 2022, 8, eabn6848]. The electronic and nuclear motion on the femtosecond time scale was induced and probed in kinematically complete soft X-ray experiments at the FLASH free-electron laser facility. The detailed analysis of amplitude, instantaneous phase, and instantaneous frequency of the propagating many-body wave packet during its lifecycle provides unprecedented insight into dynamical processes beyond the Born-Oppenheimer approximation. We are confident that the refined experimental data evaluation helps to develop new theoretical tools to describe time-dependent molecular wave functions in complicated but ubiquitous non-Born-Oppenheimer photochemical conditions.

Mapping the Catalytic-Space for the Reactivity of Metal-free Boron Nitride with O2 for H2O-Mediated Conversion of Methane to HCHO and CO.

Transition-metal based catalysts have been widely employed to catalyze partial oxidation of light alkanes. Recently, metal-free hexagonal-boron nitride (h-BN) has emerged as a promising catalyst for the oxidation of CH4 to HCHO and CO; however, the intricate catalytic surface of h-BN at molecular and electronic levels remains inadequately understood. Key questions include how electron-deficient boron atoms in h-BN reduce O2, and whether the partial oxidation of methane over h-BN exhibits similarities to traditional transition-metal catalysts. In our study, we computationally-mapped in-detail the surface catalytic-space of h-BN for methane oxidation. We considered different structures of h-BN and show that these structures contain numerous sites for O2 binding and therefore various routes for methane oxidation are possible. The activation barriers for methane oxidation via various paths varies from ~83 to ~123 kcal mol-1. To comprehend the differences in activation barriers, we employed geometrical, orbital and distortion/interaction analysis (DIA). Orbital analysis reveals that methane activation over h-BN in presence of dioxygen follows a standard hydrogen atom transfer mechanism. It is also shown that water plays an intriguing role in reducing the barrier for HCHO and CO formation by acting as a bridge.

Using e-scaffolding to develop students’ scientific reasoning through inquiry-based learning

Introduction. Through inquiry-based learning (IBL), scaffolding is provided to help students develop their scientific reasoning (SR). However, the results obtained by students vary depending on their prior knowledge because the strategies of scaffolding vary on demand. Therefore, the different levels of scaffolding should be provided to all students based on their prior knowledge to facilitate their internalisation of new information in the classroom.Aim. The present research aimed to examine students’ SR in a course involving two electronic scaffolding levels (e-scaffolding) in IBL.Methodology and research methods. The authors conducted a mixed-methods explanatory study followed by semi-structured interviews and think-aloud exercises with two classes (experimental and control) of 64 physics students in Indonesia for eight weeks. The authors collected the quantitative data by testing their prior knowledge and SR and obtained the qualitative data from the interviews and the think-aloud exercises, learning activities, photos, videos, and teachers’ notes. ANOVA analysis of the quantitative data and thematic analysis of the qualitative data were performed.Results and scientific novelty. To our knowledge, our research marks the first instance of providing scaffolding with a tiered level option, a feature previously limited to a single level. It was found that there were significant differences in students’ SR based on students’ prior knowledge of the subject. E-scaffolding developed more on SR for students with low prior knowledge. Taking notes as a habit and switching roles during experiments helped improve students’ SR. It was observed that the students with low prior knowledge still needed e-scaffolding buttons to master physics concepts. Meanwhile, the students with high prior knowledge employed e-scaffolding buttons only to answer task completion.Practical significance. Based on the research findings, the tiered e-scaffolding produced in this work opens a new potency to be applied by physics teachers to enhance student’ SR. Additionally, educational technology developers may consider tiered e-scaffolding designs to provide an adaptive system.

Using e-scaffolding to develop students’ scientific reasoning through inquiry-based learning

Introduction. Through inquiry-based learning (IBL), scaffolding is provided to help students develop their scientific reasoning (SR). However, the results obtained by students vary depending on their prior knowledge because the strategies of scaffolding vary on demand. Therefore, the different levels of scaffolding should be provided to all students based on their prior knowledge to facilitate their internalisation of new information in the classroom.Aim. The present research aimed to examine students’ SR in a course involving two electronic scaffolding levels (e-scaffolding) in IBL.Methodology and research methods. The authors conducted a mixed-methods explanatory study followed by semi-structured interviews and think-aloud exercises with two classes (experimental and control) of 64 physics students in Indonesia for eight weeks. The authors collected the quantitative data by testing their prior knowledge and SR and obtained the qualitative data from the interviews and the think-aloud exercises, learning activities, photos, videos, and teachers’ notes. ANOVA analysis of the quantitative data and thematic analysis of the qualitative data were performed.Results and scientific novelty. To our knowledge, our research marks the first instance of providing scaffolding with a tiered level option, a feature previously limited to a single level. It was found that there were significant differences in students’ SR based on students’ prior knowledge of the subject. E-scaffolding developed more on SR for students with low prior knowledge. Taking notes as a habit and switching roles during experiments helped improve students’ SR. It was observed that the students with low prior knowledge still needed e-scaffolding buttons to master physics concepts. Meanwhile, the students with high prior knowledge employed e-scaffolding buttons only to answer task completion.Practical significance. Based on the research findings, the tiered e-scaffolding produced in this work opens a new potency to be applied by physics teachers to enhance student’ SR. Additionally, educational technology developers may consider tiered e-scaffolding designs to provide an adaptive system.

Optical properties of semiconductor nanoparticles doped with 3d and 4f block elements

Doped inorganic nanoparticles (NPs) have enabled researchers across multiple disciplines to create new materials with unique optical, electronic, magnetic, electrical, chemical, and/or compositional properties. In the quest for generating newer functional materials with controlled optical and electronic properties, the use of d- and f-block elements as dopants in the inorganic NPs remain at the forefront of research. This article summarizes experiments that identify the important control parameters, in the form of NP core and surface properties, for promoting host-sensitized dopant emission from d- and f-doped inorganic/semiconductor NPs. We conclude that energy offsets between the dopant and NP electronic levels and an understanding of the charge trapping mechanisms can be used to predict dopant luminescence, and we claim that these features can be used to choose NP host materials by design, rather than by trial and error.

Unveiling the luminescence property of Pr-incorporated barium cerate perovskites for white LED applications

Abstract The various structural and conductive attributes of barium cerate, BaCeO3 position it as a highly promising matrix for energy storage purposes. The current study illustrates that barium cerate can be effectively tailored by introducing trivalent praseodymium ions, thereby enhancing its optical properties as well. In this work, single-phased orthorhombic crystalline powders of barium cerate incorporated with Pr3+ (BaCeO3: Pr3+) were synthesized using the gel combustion procedure, followed by calcination. We conducted a comprehensive investigation into their crystal structure, vibrational characteristics, optical properties, and potential applications in wLEDs. The structure refinement indicates that Pr3+ occupies Ce4+ site, which results in the expansion of the cell and facilitates the generation of defects such as Pr Ce ′ ${\mathrm{Pr}}_{\text{Ce}}^{\prime }$ and oxygen vacancies V O ⋅ ⋅ ${V}_{\text{O}}^{\cdot \cdot }$ . By correlating information gathered from diffuse reflectance spectra with that obtained from photoluminescence spectra, we gained a deeper understanding of the electronic level structure and the mechanism of energy transfer. We successfully achieved a finely tuned cool white light emission with very low color purity (CP), a high color rendering index (CRI), and a high correlated color temperature (CCT) with a quantum efficiency of 36.3 % by exciting the material with a 321 nm wavelength. Because of the transfer of energy within activators through dipole–dipole interaction, luminescence quenching occurs when Pr3+ concentration reaches 1 wt%. To the best of our knowledge, this is the initial investigation of luminescence properties of Pr-incorporated barium cerate perovskites.

Scanning Spin Probe Based on Magnonic Vortex Quantum Cavities.

Performing nanoscale scanning electron paramagnetic resonance (EPR) requires three essential ingredients: First, a static magnetic field together with field gradients to Zeeman split the electronic energy levels with spatial resolution; second, a radio frequency (rf) magnetic field capable of inducing spin transitions; finally, a sensitive detection method to quantify the energy absorbed by spins. This is usually achieved by combining externally applied magnetic fields with inductive coils or cavities, fluorescent defects, or scanning probes. Here, we theoretically propose the realization of an EPR scanning sensor merging all three characteristics into a single device: the vortex core stabilized in ferromagnetic thin-film discs. On one hand, the vortex ground state generates a significant static magnetic field and field gradients. On the other hand, the precessional motion of the vortex core around its equilibrium position produces a circularly polarized oscillating magnetic field, which is enough to produce spin transitions. Finally, the spin-magnon coupling broadens the vortex gyrotropic frequency, suggesting a direct measure of the presence of unpaired electrons. Moreover, the vortex core can be displaced by simply using external magnetic fields of a few mT, enabling EPR scanning microscopy with large spatial resolution. Our numerical simulations show that, by using low damping magnets, it is theoretically possible to detect single spins located on the disc's surface. Vortex nanocavities could also attain strong coupling to individual spin molecular qubits with potential applications to mediate qubit-qubit interactions or to implement qubit readout protocols.