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6 ± 0.5 K and 93.8 ± 0.2 K, respectively. With Ni substitution the TC values were found to be enhanced to 104.5 ± 0.4 K for MgAl2O4(100) and 108.5 ± 0.6 K for MgO (100) substrates. X-ray photoelectron spectroscopy (XPS) suggests Cr3+oxidation states in the films, while Co ions are present in a mixed Co2+/Co3+oxidation state. The substitution of Ni at Co site significantly modifies the line shape of the core level as well as the valence band. Ni ions are also found to be in a mixed 2+/3+ oxidation state. O 1s core level display asymmetry related to possible defects like oxygen vacancies in the films. © 2020 IOP Publishing Ltd.Spin-flip scattering from magnetic impurities has a strong pair-braking effect in $s$-wave superconductors where increasing the concentration of impurities rapidly destroys superconductivity. For small Kondo temperature $T_K$ the destruction of superconductivity is preceded by the reentrant superconductivity at finite temperature range $T_c2 less then T less then T_c1$, while the normal phase reappears at $T less then T_c2 \sim T_K$. Here we explore the superconducting phase in a periodic system modeled as the Anderson lattice with additional attractive on-site (Hubbard) interaction $g$ acting on the conduction band electrons. We solve the equations using dynamical mean field theory which incorporates Kondo physics, while the pairing interaction is treated on the static mean-field level. For large coupling $g$ we find reentrant superconductivity which resembles the case with diluted impurities. However, we find evidence that reentrant superconductivity is here not a consequence of many-body correlations leading to the Kondo effect, but it rather stems from a competition between the single-particle hybridization and superconducting pairing. An insight into the spectral functions with in-gap structures is obtained from an approximate noninteracting dual model whose solution interpolates between several exact limits. © 2020 IOP Publishing Ltd.In this study, we demonstrate a self-excited oscillation induced in cholesteric liquid crystalline droplets under a temperature gradient. At equilibrium, a winding Maltese cross pattern with a point defect was observed via polarised microscopy in the droplets dispersed in an isotropic solvent. When the temperature gradient was applied, the pattern was deformed owing to the Marangoni convection induced by the gradient. Here, when both the droplet size and temperature gradient were sufficiently large, the periodic movement of the defect together with the pattern deformation was observed, which demonstrated the self-excited oscillation of the director field. To describe this phenomenon, we theoretically analysed the flow and director fields by using Onsager's variational principle. This principle enabled the simplified description of the phenomenon; consequently, the time evolution of the director field could be expressed by the phenomenological equations for the two parameters characterising the field. These equations represented the van der Pol equation, which well expressed the mechanism of the self-excited oscillation. © 2020 IOP Publishing Ltd.We disclose fabrication of silver nanoparticles (Ag-NPs) surface functionalized with gelatin at different concentrations (G10/G20/G40 AgNPs) with average particle size ~ 200nm, bioconjugated with antisera antibodies (AsAb) of major and clinically significant blood groups (CSBG) at different titres from neat to 1128. Bioconjugation by ionic interaction at pH 7.4, enabled 'end-on' configuration with the -NH2 group of the antibody free for interaction with the RBC antigen as confirmed by FTIR. Tube agglutination test (TAT) revealed optimum agglutination with G20NPs, while SDS PAGE confirmed optimal titre as 18 for the major blood groups A, B, AB and O. Bioconjugated AgNPs coated onto microtitre assay plates with major and CSBG to enable simultaneous identification, validated against the TAT on 400 random blood samples for major blood groups revealed high accuracy (95%). While similar accuracy was seen for most of the clinically significant blood groups with only false negatives, the method was not found suitable for Kell, Kidd and Duffy groups. The absence of false positives reflects high safety, and eliminates the risk of a mismatched blood transfusion. The method only necessitates use of diluted blood hence could enable point of care detection, with the significantly lower AsAb requirement also providing a cost advantage. © 2020 IOP Publishing Ltd.Research in spintronic has attracted much attention in the last few years due to the technological progress in generating and manipulating spin currents in miniaturized devices. Notwithstanding dissipative effects are inherent to experiments, in many theoretical works the damping of spin waves is included later by phenomenological arguments or even disregarded. Among the many techniques that have been used to treat magnetic models, bosonic representations is one of them. In this work, we chose the Holstein-Primakoff bosonic formalism to treat a ferromagnetic model with a priori inclusion of the damping term. Damping is included through a non-Hermitian term in the Hamiltonian and we showed that the well-known coherent state formalism can be generalized to properly represent the dissipative magnon model. The obtained results are then used to describe the precession magnetization in spintronic experiments, as the spin pumping process. © 2020 IOP Publishing Ltd.A new perspective approach to how to create a new and locally nanostructured graphene-based material is reported on. We studied the electric and structural properties for the partially fluorinated graphene (FG) films obtained from a FG-suspension and nanostructured by high-energy Xe ions. Local shock heating in ion tracks is suggested to be the main driving force of the changes. It was found that ion irradiation leads to the formation of locally thermal expanded FG and its cracking into nanosized nanoparticles with embedded small (~1.5-3 nm) graphene quantum dots, which band gap was estimated as 1-1.5 eV, into them. A further developed approach was applied to correction of the functional properties of the printed FG-based crossbar memristors. Selleckchem PDS-0330 Dielectric FG films with small quantum dots may offer prospects in graphene-based electronics due to their stability and promising properties. © 2020 IOP Publishing Ltd.