New approaches for the synthesis of magnetite (Fe3O4) nanoparticles (NPs) are of considerable interest due to their potential applications in various fields, such as biomedicine, industry, environmental remediation, and catalysis. This study presents a novel approach for synthesizing Fe3O4 NPs using high-energy electron beam (EB) irradiation starting from organic (acetylacetonates) iron precursors. EB irradiation is a challenging nanoparticle synthesis method, being at the same time efficient and rapid. The synthesis is carried out at room temperature and is based on the water radiolysis process. This eliminates the need for chemical-reducing agents and may provide precise control over particle formation. Using high-energy EB irradiation of an organic Fe precursor, we demonstrate the successful synthesis of well-dispersed Fe3O4 NPs with controlled size, morphology and magnetic properties, as proven by morpho-structural, Mössbauer spectroscopy and magnetic investigations. In particular, using organic iron precursors, such as iron acetylacetonates, NPs with distinct surface characteristics and improved thermal stability compared to those synthesized from inorganic precursors were obtained. These findings suggest that integrating organic precursors in EB-assisted synthesis can enhance the functional properties of Fe3O4 NPs, making them more suitable for specific applications. The versatility of this method opens up new avenues for the targeted design of nanomaterials with specific functionalities, paving the way for advanced applications in various technological fields. The current study is also motivated by the lack of literature data on the synthesis of metallic iron or iron oxide NPs mediated by EB radiolysis.

Graphene oxide (GO) provides a versatile platform for the development of antimicrobial and anti-adhesive materials, particularly when combined with covalently immobilized bioactive compounds but translating antibiotic activity into a stable layer without clinically relevant drug leaching remains challenging. Here, we report a covalently engineered GO-moxifloxacin (GO-MOX) composite obtained by grafting MOX onto ethylenediamine-functionalized GO via carbodiimide coupling. The successful functionalization was supported by complementary physicochemical analyses, including FTIR, NMR, Raman, XPS, TGA, SEM/EDS and XRD. TGA indicated a high MOX loading of approximately 44.75 wt%, while HPLC analysis revealed that extractable/free MOX represented only 0.0586% of the total MOX content, supporting the predominantly covalent and minimally releasing character of the material. GO-MOX showed pronounced antimicrobial activity against representative ESKAPEE pathogens, with MIC values of 7.81 μg/mL against E. coli and 62.5 μg/mL against the tested Gram-positive strains. In the antimycobacterial assay, GO-MOX markedly inhibited the growth of both drug-susceptible and rifampicin/isoniazid-resistant Mycobacterium tuberculosis strains under the tested conditions. Anti-adherence activity was observed at sub-inhibitory concentrations, with MBEC values of 1.95 μg/mL for E. coli and 7.81 μg/mL for S. aureus, suggesting interference with early bacterial attachment. Additional analyses on mature biofilms formed on titanium substrates showed that GO-based treatments, particularly GO-MOX, affected biofilm viability, promoted membrane permeabilization, and altered extracellular matrix components, including extracellular proteins, nucleic acids/eDNA-like fractions and polysaccharides. In vitro cellular assays showed that normal MRC-5 fibroblasts recovered metabolic activity to ≥80% after 72 h, whereas A549 cells displayed a concentration- and time-dependent decrease in viability. ROS generation and Caspase-3 activity further suggested that the selective antiproliferative response observed in A549 cells may be associated, at least in part, with oxidative stress-mediated apoptotic mechanisms. In silico target prediction and structural inspection of MOX-topoisomerase complexes suggested that GO-MOX may retain a MOX-related contribution involving bacterial DNA gyrase/topoisomerase IV, while GO may provide additional contact-associated interfacial effects. Overall, GO-MOX emerges as a promising antimicrobial and anti-adhesive nanoplatform with cell-selective antiproliferative effects, supporting its further investigation for the future development of biomedical antimicrobial surfaces and coatings.

Functionalized gold nanoparticles (AuNPs) have emerged as versatile platforms in therapeutic research, yet their specific roles in regenerative medicine, particularly in modulating prokaryotic and eukaryotic cell responses, enhancing antioxidant defense, and supporting tissue repair mechanisms, remain insufficiently elucidated. In this study, we have obtained gold nanoparticles initially functionalized with the well-established antioxidant lipoic acid and subsequently with thiosalicylic acid. Their final modification with the 6-amino-chromen-2-one, a coumarin derivative with recognized antioxidant and pharmacological relevance, generated novel composite systems, distinguished by enhanced biological performance. The novel structures have been comprehensively characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), infrared spectroscopy (IR), and thermal analysis. Their biological properties were evaluated through antimicrobial and anti-adherence assays against standard and clinical strains, as well as antioxidant and biocompatibility (hemolytic/anti-hemolytic/cytotoxicity) assays. The findings highlight the strong therapeutic potential of functionalized AuNPs, demonstrating enhanced antimicrobial efficacy, antioxidant protection, and cytocompatibility. Their capacity to reduce oxidative stress and combat microbial infections show promise for advanced biomedical applications, such as controlled drug delivery and tissue regeneration.

Structural and electronic transport features of high quality epitaxial metastable fcc W and beta-W2N thin films compatible with spintronic multilayer nanosystems are reported in a parallel approach. The epitaxial layers have been successfully prepared in a broad range of thicknesses from a few to tens of nanometers. The scalable method of auxiliary plasma assisted substrate magnetron sputtering was used. The epitaxy relationship between the thin films and MgO (100) single-crystal substrate is highlighted by high resolution XRD investigations of the reciprocal space. Electron transport properties are discussed with respect to the striking behavior observed via resistivity over temperature cycles. The chemical stability as active buffer layers of both fcc W and beta-W2N thin films is shown in spintronic configurations, where a thin film of Fe is interposed between W or W2N layers. The reported results show that the obtained high quality W based epitaxial layers are superior template-matched buffers for epitaxial Fe layers, enabling a new class of functional spintronic heterostructures.

Rapidly solidified Fe-Pd-Ga ferromagnetic shape memory ribbons, containing 1 and 3 at. % Ga, were obtained, and annealed at 950 degrees C for 15 and 30 min. Gallium substitution destabilizes the cubic lattice but preserves ferromagnetic order; thereby, it modifies phase stability and magnetic sensitivity. The combined effects of composition and heat treatment on microstructure, martensitic transformation temperatures, transformation heat, kinetics, and magnetic-field-induced transformation shift are presented. Magnetic sensitivity is evaluated using thermomagnetic and magneto-elastic measurements, being further validated through Clausius-Clapeyron analysis. Short-time heat treatment enhances structural relaxation and significantly increases the transformation heat, whereas prolonged annealing promotes grain growth and precipitate formation without suppressing thermoelastic behavior. Increasing Ga content results in a pronounced linear increase of the martensitic transformation temperature with magnetic field, from approximately 0.6 K T-1 for 1 at. % Ga to about 1.45 K T-1 for 3 at. % Ga. The good agreement between thermomagnetic measurements and Clausius-Clapeyron analysis confirms that the transformation shift is primarily governed by intrinsic thermodynamic parameters. The smaller magneto-elastic response indicates that microstructure limits strain expression. Therefore, functional control requires tuning the balance between intrinsic thermodynamic driving forces and microstructure-dependent magneto-elastic effects through composition and heat treatment. This enables the design of thermally adaptive and magnetically programmable materials, where 3 at. % Ga composition is suitable for active magnetic control and that of 1 at. % Ga is optimized for enhanced thermal stability and precision sensing.

Y-branched TiO2 nanotubes (NTs) were produced by anodizing titanium plates derived from aerospace production leftovers and subsequently engineered to develop an enhanced TiO2-based photocatalytic system. The NTs were electrochemically reduced to obtain reduced TiO2 nanotubes (rTN) with a narrowed bandgap, followed by surface modification with polydopamine (PD) and silk fibroin-derived quantum dots (QDs) to promote enhanced UV and visible-light photocatalysis for wastewater treatment. The QDs were hydrothermally synthesized from Bombyx mori silk fibroin. Scanning Electron Microscopy (SEM) revealed spherical QD agglomerates encapsulated within the PD layer, while Energy Dispersive X-ray Spectroscopy (EDX) confirmed the presence of carbon and nitrogen originating from both PD and QD. The resulting rNT/PD/QD photocatalyst exhibited a significantly reduced bandgap (1.03 eV), increased Urbach energy (1.35 eV), and moderate hydrophilicity. A high double-layer capacitance (Cdl) indicated an enlarged electrochemically active surface due to the combination of treatments. Electrochemical characterization demonstrated reduced electrical resistance, higher charge density, and lower electron-hole recombination, leading to improved interfacial charge transfer efficiency and electrochemical stability during multi-cycle cyclic voltammetry measurements. Preliminary photocatalytic tests show that the rNT/PD/QD photocatalyst achieved a degradation efficiency of 79.26% for methyl orange (MO) and 35% for tetracycline (TC).

In this study, multilayer borophene-like nanosheets were synthesized via a solvothermally activated liquid-phase exfoliation route to achieve controlled thickness, composition, and crystal structure. The effect of different solvents, including dimethylformamide (DMF), acetone and ethylene glycol on the morphology, microstructure, and electrochemical hydrogen storage performance of the obtained nanosheets was systematically investigated. The successful formation of multilayer nanosheets was confirmed by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy, field emission scanning electron microscopy and transmission electron microscopy analyses. The results demonstrate that the solvent boiling point plays a critical role in determining the morphology, with higher-boiling solvents favoring the formation of larger two-dimensional nanosheets, while lower-boiling solvents promote smaller particles due to faster nucleation. The electrochemical performance was evaluated in 3 M KOH using cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy. All boron nanosheets exhibit significantly improved hydrogen storage capacity compared to bulk boron. Notably, the DMF-derived sample delivers a high specific capacity of 944.44 mAh g−1 at 10 mA g−1, approximately 4.5 times higher than the precursor, highlighting its strong potential for electrochemical energy storage applications.

This work presents a detailed analysis of the structural and magnetic configuration of bulk Gd₃Fe₅O₁₂ obtained by spark plasma sintering (SPS) at 1100 °C for a dwell time of 1 min. While X-ray diffraction analysis proves formation of the single phase with the gadolinium iron garnet structure, temperature dependent Mössbauer spectroscopy provides more insight on the atomic scale occupancy and local magnetic configurations. It is shown that SPS processing does not alter significantly nor the compound stoichiometry or the compensation temperature, as compared to a reference sample obtained by conventional solid-state reaction and previously reported by our group. In both samples, a limited cationic inversion of about 10

We approach a cost effective, environmentally friendly, synthesis route of a non-precious electrocatalysts for the anodic oxidation of bioethanol. SnO2 and SnO2-Graphene Nanoplatelets are decorated with nano-crystallized Ni filaments and clusters with peculiar surface chemistry. The electrocatalysts are obtained by subsequently depositing different Ni species by wet impregnation in the presence or absence of a reducing agent (Na borohydride). The effect of the Ni deposition parameters on the crystalline and porous structures, on the surface chemistry and on the electrochemical behavior is highlighted. It is found that the use of a lower temperature (200 degrees C) thermal treatment in the presence of a reducing agent leads to an increase of more than five times of the specific surface area. Electrocatalytic performance is assessed in alkaline medium and, apparently, graphene addition to the SnO2-nickel support allows diminishing the Tafel slope with ca. 20 %, down to 106 mV decade(-1). Such value, that favorably compares to those in the literature, together with the good resistance to fouling that the results of the chronoamperometric and electrochemical impedance spectroscopy (EIS) measurements demonstrate, show that the composites are worthy of development as active materials for biofuel cell applications.

Scalable, wafer-compatible routes to compositionally graded transition-metal dichalcogenide multilayers remain limited, particularly in the sub-10 nm regime relevant to device stacks. Here, we demonstrate the synthesis of vertically graded Mo1-xWxS2 films by sequential magnetron sputtering of W and MoSx precursor layers, followed by confined-space sulphurisation. By varying the sulphurisation temperature (550, 800, and 850 °C) and time (45 and 60 min), we identify 800 °C for 45 min (10 °C min-1 ramp) as the optimal conditions balancing conversion and morphological stability. X-ray reflectivity and X-ray diffraction reveal continuous layered films with a strong (002) texture for sulphurisation temperatures ≥800 °C. Raman spectroscopy, supported by multipeak deconvolution of the A1g(Γ) and E12g(Γ) modes, indicates Mo-W mixing and not an abrupt MoS2/WS2 bilayer interface. Cross-sectional high-resolution transmission electron microscopy confirms a layered Mo1-xWxS2 multilayer structure under all sulphurisation conditions, with crystallinity highest under the optimised 800 °C and 45 min conditions. Scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy confirms a vertical Mo/W composition gradient. X-ray photoelectron spectroscopy reveals a temperature-dependent alloy composition, with the surface W content increasing progressively with sulphurisation temperature, consistent with thermally driven Mo/W interdiffusion across the vertical composition gradient. These results establish sulphurised MoSx/W precursor stacks as a practical thin-film route to vertically graded Mo1-xWxS2, compatible with large-area physical-vapour processing.

Current demands in the field of functional textiles include the integration of specific characteristics, such as self-cleaning, antimicrobial efficacy and possible wound healing properties. Green synthesis of nanoparticles represents a promising strategy to address these challenges, combining biocompatibility and ecological safety with effective antimicrobial and antioxidant performance. In this study, silver nanoparticles (AgNPs) have been synthesized using different ratios of Crataegus monogyna extract: AgNO3. Physically stable AgNPs with spherical shape, particle main diameters ranging from 61.9 to 85.4 nm and appropriate polydispersity indices were produced. Crataegus monogyna presented high phenolic content (30.58 ± 2.20 mg/g) and strong antioxidant activity (96 ± 1.6 µmol TE/g). The obtained nanoparticles were characterized by TEM, EDX, and XRD analysis. When applied to cotton and wool textiles, the AgNPs adhered uniformly, caused minimal colour change, and exhibited enhanced antimicrobial activity against bacterial and fungal strains compared to other plant-derived AgNPs, with values between 8 and 13.5 mm. The treated textiles demonstrated strong performance against Staphylococcus aureus with inhibition zones of 11 ± 0.53 for cotton and 13.5 ± 0.42 for wool. These findings highlight the potential of Crataegus monogyna-based AgNPs as effective and fabric-compatible antimicrobial agents.

Chronic inflammation and persistent infections represent major obstacles to effective wound healing, underscoring the urgent need for innovative, eco-friendly biomaterials capable of combating microbial contamination and oxidative stress. In this study, we investigated the in vitro biological activities of a gold-titanium dioxide (AuNPs/TiO2) composite, synthesized via an environmentally friendly approach, employing an ethylenediamine-hyaluronic acid derivative as both a reducing and stabilizing agent. The composite was analyzed using various techniques, including Transmission Electron Microscopy, X-ray elemental mappings, X-ray diffraction, and X-ray spectroscopy. We evaluated the biological properties of the material through antimicrobial and anti-adherence assays, alongside hemolysis, cytotoxicity, oxidative stress levels, and wound healing potential. The green-derived AuNPs/TiO2 demonstrated moderate to potent antimicrobial and anti-adhesion activity (minimum inhibitory concentrations ranging from 0.625 to 5 mg/mL) against both standard and clinical isolates. The material showed low hemolysis rates (<5 %) at bioactive concentrations. Additionally, keratinocyte viability and membrane integrity were largely preserved at the tested concentrations, with no detectable increase in pro-inflammatory nitric oxide levels. Intracellular antioxidant defenses were maintained, and lipid peroxidation was minimal. In an in vitro scratch assay, AuNPs/TiO2 promoted keratinocyte migration, suggesting a promising potential to enhance tissue repair. In summary, the biomaterial exhibits promising multifunctional properties, including effective antimicrobial and anti-adhesion activity, excellent biocompatibility with minimal hemolysis, and the ability to enhance keratinocyte migration and intracellular antioxidant defenses. These findings highlight its potential as a safe and effective biomaterial for accelerating wound healing and addressing infection-related challenges.

Although the accidental or intentional explosions produced in industrial facilities or in urban areas are events with low probability, they have a high destructive potential and potential for human injuries and/or fatalities. One of the types of such events is given by detonation of improvised explosive devices (IEDs)—dirty bombs for terrorist purposes—which may produce a high number of metallic fragments. Studying mass and spatial distributions of these fragments is useful for evaluating their lethality and destructive potential and may help to implement adequate protective measures. This work brings a closer insight into the fragment dispersion around the detonation of a steel-enclosed C4 charge with cylindrical symmetry. In this respect a specific approach involving both detonation experiments and numerical simulations performed by home-made and commercial software packages for investigation of the fragmentation process and accompanying angular scattering of the fragments was proposed. Special algorithms, which allow the estimation of the spatial distributions of fragments from the numerical analysis of perforations made by the metallic fragments generated by such IEDs on surrounding material walls, are developed. Further, numerical simulations of a similar IED device provided output parameters related to the statistical distributions of mass, kinetic energy and position of the fragments. Experimental fragmentation generated a recovered mass distribution (94 fragments of 67.5 g) that was compared with that extracted from simulation, revealing a reasonable agreement on the 0.3–1 g range. In the case of simulations, 300 fragments from a total number of 374 showed a mass ranging from 0.004 to 0.3 g. The simulations showed that the middle part of the steel case generated fragments of kinetic energy over 4 kJ and its ends generated fragments of kinetic energy under 1 kJ. Experimental fragment scattering distributions were investigated with specific home-made numerical algorithms, which, based on a set of images, analysed the correlations between spatial coordinates of perforations made by fragments on surrounding special panels and provided histograms that are discussed in relation with the fragment-induced lethality degree.

Herein we present a comparative study among different spray-coated nanometric mesoporous electron transporting layers (ETLs) in perovskite solar cells (PSC), namely m-TiO2, 2 , m-SnO2 2 and m-SnO2 2 quantum dots (mSnO2QDs). 2 QDs). The solutions used for deposition were prepared from commercial pastes and colloidal suspensions for m-TiO2 2 and m-SnO2. 2 . For m-SnO2QDs 2 QDs in-house QDs solutions were prepared. The formamidiniummethylamonium-potassium (FAMA@10 K) has been used as light absorber material in the fabricated PSCs. The structural, compositional and morphological studies, correlated with the photovoltaic performance of PSCs, indicate that the m-SnO2 2 QDs layer is the best candidate among the three investigated mesoporous ETLs. Compared with the suspensions used for the other two ETLs, the in-house prepared SnO2 2 QDs solution presents smaller agglomerates of nanoparticles and results in the formation of a thinner, more uniform and compact mesoporous ETL. The FAMA@10 K perovskite deposited on m-SnO2 2 QDs ETL presents a lower roughness, better uniformity and a higher amount of PbI2. 2 . Our work unveils that the SnO2 2 QDs solution can be easily produced in laboratory and when is deposited as mesoporous scaffold in a PSC with FAMA@10 K perovskite, the power conversion efficiency increases up to 14.90 %, being with up to 27 % larger than in the PSCs with m-TiO2 2 and mSnO2 2 ETLs prepared from commercial solutions. By modeling the J-V dynamic hysteresis with more than 90 % match between the calculated and experimental J-V data, for all three types of mesoporous ETLs, the relevant parameters that explain the hysteresis magnitude and account for ionic-induced recombination processes in PSCs were determined.

Layers of HfO2 and (Hf,Zr)O2 crystalline nano-particles are synthesized via direct liquid injection atomic layer deposition, and a comprehensive set of structural, chemical, and electrical characterizations is employed to elucidate their phase composition and functional behavior. X-ray photoelectron spectroscopy revealed a compositional contrast between the films: (Hf,Zr)O2 layers contained up to 45% stoichiometric oxide, while pure HfO2 films are dominated by sub-oxides, especially under strongly reducing conditions, in which exclusively sub-oxide phases and p-type semiconducting behavior is revealed. Electrical measurements indicated room-temperature stabilization of polar phases and tetragonal-to-orthorhombic phase transition with a Curie temperature near 200 K. FTIR spectroscopy confirmed the presence of tetragonal and orthorhombic HfO2 phases, providing insight into minor features observed ≈30° (2θ) in X-ray diffraction patterns. Notably, devices incorporating an AlN interlayer demonstrated a significant enhancement in pyroelectric performance, suggesting this strategy to advance the pyroelectric performance of HfO2-based materials, supporting their development for lead-free sensor technologies.

A multiphase high‐entropy diboride (Ti 0.25 Ta 0.25 Hf 0.25 Zr 0.25 )B 2 is obtained by spark plasma sintering from a mixture of single‐metal diborides. The as‐prepared material at the microscale can be defined as a composite where grains of a Ta‐rich/Ti‐poor complex diboride phase are the reinforcement and grains of Ta‐poor/Ti‐rich complex diboride are the matrix. However, at the nanoscale, the grains are heterogeneous, composed of regions with a multitude of complex diboride compositions. The interface between nanoregions is compositionally graded and has an irregular shape. The four‐metal diboride shows a deformation‐resistant mechanism under bending load. A strengthening process is active, increasing the room temperature bending strength (326 MPa) by ≈50% at 1800 °C (488 MPa). A ductile behavior with a deformation strain of ≈7.5% is observed at 2000 °C while bending strength (407 MPa) is ≈25% above the value at room temperature. At 2000 °C, observation of dislocations propagating from one compositional nanoregion to another and with a different density suggests dislocation contribution, first of all, to plasticity. The peculiar heterogeneity of this material at nano‐ and microscales is considered the reason for the remarkable mechanical response to bending load at different temperatures.

The precise control of the magnetic compensation temperature (θc) in ferrimagnetic garnets is essential for the development of cutting-edge ultrafast customizable spintronic devices. In this work we demonstrate how fine variation in stoichiometry and cation distribution in iron gadolinium garnets significanty influences θc. Two samples of Gd3Fe5O112 garnets synthesized via a new hydrothermal method and a conventional solid-state reaction, respectively, were considered. The complex study was carried out using a complex approach combining X-ray diffraction, magnetometry, and Mössbauer spectroscopy. Atomic-scale analysis revealed with unprecedent accuracy a cationic inversion between Fe3+ ang Gd3+ at octahedral and dodecahedral sites in both samples, and their chemical compositions were determined as Gd2.70Fe4.76O11.9 and Gd2.96Fe4.68O11.5, respectively. These local rearrangements have been shown to have a consistent influence on θc (290 K and 317 K, respectively) around room temperature, emphasizing the high sensitivity of exchange interactions to internal atomic order. Results clearly illustrate the strong correlation between the processing, atomic configuration and macroscopic magnetic behavior, establishing a new paradigm for the design of garnet-based materials with tunable θc. The strategy for the accurate determination of cation inversion illustrated in this work exhibits great potential in guiding material innovations for next-generation spintronics.

Composites were obtained by using a commercial bicomponent epoxy resin (containing Al2O3 and SiO2) and cubic BN (cBN) (0-50 wt.%). Two preparation methods were used: (a) the cBN powder was first mixed with the resin base and further with the hardener, and (b) the cBN powder was first mixed with hardener and afterwards with the resin base. Both methods show a similar enhancement trend in the thermal conductivity from 0.77 W/mK in the resin without additive to 1 and 1.5 W/mK in the ones filled with 30 and 50 wt.% cBN, respectively. A reasonable decrease in bending strength from 74 for 0 wt.% cBN to 70 or 64 MPa for 30 wt.% cBN added by method (a) or (b), respectively, occurs. The bending strain at breakage decreased from 5.58% to 2.65 or 3.78%. High sensitivity vs. processing was also found for electrical properties measured for frequencies of 1-107 Hz. An increasing amount of cBN decreased the room temperature conductivity, dielectric constant, and dielectric loss tangent and modified the shape of the curves vs. frequency. However, in samples with 30 wt.% or more of cBN, a partial recovery to a high insulating state was observed.

We report on the Matrix Assisted Pulsed Laser Evaporation, laser technology for depositing biocompatible, antimicrobial, hydrophilic, and biodegradable complex hybrid polymeric system loaded with essential cypress-oil and magnetite nanoparticles as resorbable implants, capable of targeting possible hyperthermia applications, an anticancer moderate field heating therapy. Magnetite nanoparticles based on iron oxide (Fe3O4) coated with Cypress essential oil (denoted: Fe3O4- Cypress) and embedded in PLGA (poly(lactic-co-glycolic acid) (denoted: PLGA-Fe3O4- Cypress-) and PLGA - poly(3,4-ethylene dioxythiophene) doped with poly(styrene sulfonate) anions) (PEDOT: PSS) mixture (denoted: PLGA-Fe3O4- Cypress- PEDOT: PSS) were used as MAPLE targets. The controlled drug delivery of the active Cypress oil, an antimicrobial therapeutic agent from Fe3O4- Cypress nanoparticles could be possible by applying an external radio frequency (RF) magnetic field. The Fe3O4-Cypress-based powders as well as the final hybrid coatings have been characterized in terms of stoichiometry, morphology, magnetic, antimicrobial properties, biocompatibility, and response to external physical stimuli. FTIR analyses confirmed the quasi-stoichiometric laser transfer of organic compounds while the XRD evidenced the semicrystalline structure of deposited thin films. SEM and AFM images evidence that conductive polymer addition led to the films' relief flattening and a decrease in the coatings' thickness and roughness by changing the polymeric packaging. The samples containing conductive polymer exhibited 3 times higher current and corrosion rate values.,. All coatings are hydrophilic and revealed enhanced cellular viability when cultured with osteoblast-like MG-63 cells. The composite structures exhibited significant antimicrobial activity against Gram-positive (Staphylococcus aureus), and Gram-negative (Escherichia coli) bacteria, as well as to the opportunistic yeast Candida albicans.

Non-volatile electronic memory elements are very attractive for applications, not only for information storage but also in logic circuits, sensing devices and neuromorphic computing. Here, a ferroelectric film of guanine nucleobase is used in a resistive memory junction sandwiched between two different ferromagnetic films of Co and CoCr alloys. The magnetic films have an in-plane easy axis of magnetization and different coercive fields whereas the guanine film ensures a very long spin transport length, at 100 K. The non-volatile resistance states of the multiferroic spintronic junction with two-terminals are manipulated by a combined action of small external magnetic and electric fields. Thus, the magnetic field controls the relative orientation of the magnetization of the metallic ferromagnetic electrodes, that leads to different magnetoresistance states. The orientation and the magnitude of the electric field controls the orientation of the polarization of the guanine ferroelectric barrier, that leads to different electroresistance states, respectively. Moreover, we have observed a strong interfacial coupling of the two parameters. Consequently, positive and negative magnetoresistance hysteresis loops corresponding to spin rectification effects and non-hysteretic (erased) resistive states are manipulated with the electric field by switching the orientation of the electrical polarization of the organic ferroelectric.