ABSTRACT Chemical precipitated and followed by calcinations is a versatile process for synthesising undoped ZnO and Mn (5, 10 and 15 wt%) doped ZnO nanoparticles at pH-10 and calcinations temperature of 450°C for 2 hours were followed for synthesising all the samples. The structural properties evaluated via XRD pattern revealed the hexagonal wurzite phase and with the grain size of 19 to 9 nm. Variation

ABSTRACT In the present study, the effects of Eu content and sintering temperature on microstructural development and in vitro bioactive characteristic of Eu-doped monticellite-based ceramics prepared using boron derivative waste were investigated. Spherical closed porosities with a diameter below 20 μm were observed on cross-section of all ceramics. The increment of Eu content from 1% to 10% resulted

ABSTRACT The wounds caused by either burning or trauma are recognised potentially dangerous. Hydrogels are perceived as promising materials in wounds care applications. In the first step, various compounds were fabricated to obtain the optimal composition and then characterised using several techniques, including a water vapour passage test, antibacterial test, scanning electron microscopy, water absorption

ABSTRACT Guided bone regeneration (GBR) is an effective approach for oral and maxillofacial surgery. The membranes were fabricated by particle deposition into layer-by-layer of silk fibroin (SF)/poly (vinyl alcohol) (PVA)/silk fibroin (SF). These membranes were varied amount of PVA: 0, 100, 200, and 300 ml of 5% (w/v) PVA (control, PVA100, 200, and 300, respectively). Morphology and molecular structure

ABSTRACT The inherent biodegradable of PCL is a major challenge for its use in various commercial applications. Thermally exfoliated graphene oxide (TEGO) reinforced polycaprolactone (PCL) based bio-composite films were prepared by solution casting method. Extended probe ultrasonication was employed to ensure efficient dispersion of TEGO. The microstructure and properties of the obtained PCL/TEGO bio

ABSTRACT A novel gradient graphene composite composed of three-layers was fabricated by fused deposition modelling (FDM) with graphene oxide (RGO)/polylactic acid (PLA) as the printing filaments. Based on the analysis of the electromagnetic parameters of samples with different graphene contents, the thickness range of each functional layer was determined by the reflection loss model. The results show

ABSTRACT To appraise influence of polymerisation of restorative dental composites on physical, mechanical and chemical properties at various setting depths. The cylindrical samples (5 mm diameter, 2.5 mm height, and n = 6) of microhybrid and nanohybrid composites were fabricated. Nanohardness was performed from the surface to the core of the sample in stages, i.e., stage 1–5. Additional chemical and

ABSTRACT In this research, the Polycaprolactone/Gelatin/Hydroxyapatite nanoparticles (PGH) scaffold was successfully fabricated through electrospinning technique and the physical, chemical, and biological properties were assessed. The morphological observation exhibited relatively bead-free uniform fibers and the fiber diameter, pore size, and porosity were 616 nm, 9 μm, and 86 %, respectively.Next

ABSTRACT This paper reports a novel magnetic composite photocatalyst ZnO/Bi24O31Br10@SrFe12O19 (ZBBSF) fabricated via a hydrothermal method. The structural characteristics of ZBBSF and the probable photocatalytic mechanism for rhodamine-B (RhB) degradation under visible light were investigated. Application of ZBBSF in a primary treatment of landfill leachate was also evaluated. Crystal and microscopic

ABSTRACT The central magnetic flux density is usually simulated via finite element methods that require a significant amount of inputs and computation resources. We develop the Gaussian process regression (GPR) model to shed light on the statistical relationship between structural descriptors of the iron yoke and the central magnetic flux density for superconducting solenoids. The model is highly stable

ABSTRACT E-beam evaporated metal-oxide thin films have been studied with different stoichiometries as carrier transport materials for large-scale perovskite solar cell devices. The thin films are deposited through a reactive evaporation of pure metals in various oxygen atmosphere pressures. The measured optical and electrical properties were used in numerical modelling using SCAPS-1D software to demonstrate

ABSTRACT All-solid-state Li-ion batteries, have become increasingly important because of their highly reliable solid electrolyte materials. Flexible solid polyethylene oxide (PEO) based electrolytes have been widely studied. Nevertheless, this material exhibits low lithium-ion conductivity. Herein, we report the optimisation of the composition of PEO/polyvinylidene fluoride (PVDF)-based electrolytes

ABSTRACT Direct metal laser sintering (DMLS) of Ti6Al4V is being widely used to manufacture biomedical implants. The rapid solidification process can result in undesired microstructure that imparts poor ductility and end up residual stresses. An optimum heat treatment minimizes distortion and enables a desirable microstructure. In this work, we have examined the efficacy of heat treatment in vacuum

ABSTRACT Anodisation with electrochemical cathodic deposition method was employed to modify the surface of Ti implants with a bilayer coating made of Sr- doped titania (Sr-TiO2) and hydroxyapatite doped with magnesium (Mg-HAp). The Mg-HAp/Sr-TiO2 bilayer coating was compared with pure TiO2 and Sr-TiO2 single-layer coating. The Sr incorporation into TiO2 and Mg substitution into HAp strengthened their

Barium strontium titanate (BST)-based complex ceramics are lead-free high performance ferroelectric or relaxor materials for applying on electronics and energy storages. Here, based on Ba0.7Sr0.3TiO3, a giant dielectric enhancement is achieved by trace sodium niobate doping. The dielectric constants and strengths are enhanced up to 13850 and 330 kV/cm with acceptable loss behaviours. In combination

Ni1-xCoxO1-δ (Where x = 0.01, 0.03, 0.05, 0.07, 0.09) (CNO) based nanostructured materials were synthesized by facile soft chemical route and characterised for application as electrodes in electrochemical supercapacitors. The prepared materials were studied by XRD, FITR, particle size, EDAX equipped with SEM, TEM and electrochemical studies such as CV, GCD and impedance analysis. XRD has confirmed

Scaffold fabrication methods have a vital role in cartilage tissue engineering (CTE). For a long time, extracellular matrix (ECM) derivatives have been used to improve chondrogenesis and cartilage regeneration. In this study, polycaprolactone (PCL) scaffolds were prepared by 3D-printing and salt-leaching methods. Then, the prepared scaffolds were coated with fibrin and different acellular solubilised

Selective Laser Sintering (SLS) is an accepted and improving technique for additive manufacturing in many different areas, from the applications of aerospace to automotive, consumer products to dental and medical materials. Lightweighting is a significant issue, especially in terms of the automotive and aerospace industries, mainly to increase fuel efficiency and reduce CO2 emission. The density reduction

The development of wearable electronics has attracted wide publicity. However, conventional batteries will face environmental pollution and cyclic charging. In this work, we report a novel washable textile triboelectric nanogenerators (WT-TENG) based on the transparent tape film and the polytetrafluoroethylene (PTFE) film. The WT-TENG can still maintain stable output performance after being cleaned

The heat transfer and friction characteristics of thermosyphon solar flat plate collector using Al 2 O 3 /water nanofluid as working fluid with helical twist insert and its impacts are analysed. Thermal behaviour, heat augmentation and pressure drop characteristics of the modified collector are compared with those of conventional riser tube collector. Alumina nanofluid of 0.1%, 0.3% and 0.5% volume

The successful implantation depends on the favorable biocompatibility of the implant. In this paper,microgrooves on the surface of Ti-6Al-4V titanium alloy implants were made by laser processing technology,scanning electron microscopy and surface profilometer were used to observe the laser textured titanium samples,firstly. Then, the liquid-solid contact angle-measuring instrument was used to characterize

The present investigation aims to explore therapeutic potential of biogenic synthesised silver nanoparticles (AgNPs) mediated using endophytic fungus extract isolated from Tinospora cordifolia. The synthesised AgNPs characterised using various physicochemical analyses. In FTIR, amide I and II bands of protein and hydroxyl groups of phenolic hydroxyl confirming bioactive metabolites presence over AgNPs

A new porous 3D coordination polymer (CP), namely [Mn2(Htpim)2(odpa)]·8H2O (1, Htpim = 2,4,5-tri(4-pyridyl)-imidazole, odpa = 4,4′-oxydiphthalate), was successfully synthesized. Furthermore, complex 1 could be applied as a probe displaying good ion sensing property of Cr3+ ion by fluorescence quenching. For the treatment of the temporary osteoporosis of the hip (TOH), the biological function of the

Surface architecture belonging to flora and fauna is preferred because of their unique three dimensional micro/nanostructures, which can be utilised as novel support in SERS based chemical detection. In this work, we have fabricated biomimetic SERS substrates by replicating the wings of two different beetles with interesting surface morphology by employing soft lithography technique. Micro-bowls and

By utilising the mixed-ligand approach, a novel coordination polymer based on Zn(II) ions as nodes have been synthesised by the Zn(NO3)2 · 6H2O reacting with 1,4-H2NDC in the presence of a second N-donor ligand L, and its chemical formula is {[Zn(L)1.5(1,4-NDC)]·H2O} n (1, 1,4-H2NDC = 1,4-naphthalenedicarboxylic acid and L = N,N′-di(4-pyridyl)suberoamide). The as-synthesised complex 1 reveals outstanding

In this research work, we report a facile one pot synthesis of Sn doped SrO (Sr1-xSnxO1-δ; where x = 0.1, 0.2, 0.3 and 0.4) based two dimensional nanoparticles. The physico-chemical properties of the prepared materials were characterized by XRD, EDAX, SEM and TEM. XRD confirmed that the prepared samples are cubic. The presence of appropriate atomic percentage of elements was predicted by EDAX. SEM

Severe plastic deformation such as equal channel angular pressing (ECAP) could change the mechanical and corrosion resistance of Mg alloys. The effects of ECAP extrusion on the mechanical and biodegradable properties of an extruded Mg-1.5Zn-0.5Y-0.5Zr alloy were studied in this work. After two passes and four passes ECAP extrusion, the microstructure, mechanical properties and degradation behaviours

The glass system of composition (AgPO3) 1-x (Ag2SO4) x [where x= 0, 0.15, 0.20, 0.25 Mol%] was prepared using the conventional melt quenching technique. The molar volume and density were determined to characterise the structure of the glasses obtained. X-ray diffraction was used to confirm the amorphous nature of the glass samples used. The absorbance and transmittance were measured in the spectral

The present study explores the therapeutic potential of gelatin nanoparticles as a carrier for the delivery of linezolid, a repurposed drug for the treatment of Mycobactrium tuberculosis. However, it has significant issues of large dose and toxicity. To overcome this problem, linezolid loaded mannosylated gelatin nanoparticles were prepared for specific targeting to alveolar macrophages. The system

The intention of this study was to prepare polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) films and to improve their physicochemical properties by cross-linked with amino acids. Thus, the bio-composite films/membranes of PVA/CMC were an amalgamation with L- Histidine as the crosslinker via solution casting scheme. The effect of the L-Histidine addition on blend films was explored by various

The present investigation deals with the columnar structured growth of Mn doped ZnO (MZO) thin films by radio frequency sputtering technique. The X-ray diffraction and the processed electron diffraction pattern confirmed the hexagonal wurtzite structure and the film growth direction along (101) plane. The structure of grown film was compared with the pristine ZnO film and the JCPDS card No. 00-36-1451

AgBr/BiVO4 photocatalysts with heterojunction structures were prepared using a hydrothermal method. To analyse phase composition and microstructure, samples were characterised by X-ray diffraction and scanning electron microscopy, respectively. Photoluminescence measurements were used to characterise the recombination rate of photogenerated electron–hole pairs. The phase structure, chemical state and

S. aureus (SA) and P. aeruginosa (PA) contaminations in thermally hurt patients have controlled invasive illness producing humanity. Gold nanoparticles (AuNPs) engaged in behaviour have limits owed to their oxidative damage. Current examinations demonstrated the biosynthesis of highly biocompatible AuNPs from rich antioxidant of aqueous cutting of Aerva javanica (A. javanica). The cell viability of

Stretchable conductors are important ingredients in the new emerging wearable systems. Here, intrinsically stretchable con­ductors (ISCs) based on carbon nanomaterials with a good balance of properties are prepared through synergistic combination of graphene and carbon black (CB) into the matrices of thermoplastic polyurethane (TPU). The inks are prepared through mixing graphene and CB with adjustable

Novel MnS @ Mn3O4/C nanoflakes are prepared via two step method using natural polysaccharide. The structural, morphological and electrochemical features of the nanocomposite are investigated by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance analysis. This synergetic

(2020). Preface. Materials Technology: Vol. 35, No. 9-10, pp. 507-508.

N-type organic semiconductors are of great importance for organic electronics. Nevertheless, the development of n-type organic semiconductors is far lagged than its counterpart of p-type organic semiconductors. Herein, a linear acenaphthene-imide-fused pyrazinacene-quinone (AIPQ) with high planarity is readily prepared via a two-fold condensation reaction. The incorporation of electron-withdrawing

Mg-Zn-Ca metal glass shows good promising applications in biomaterials. MAO coating and Ca-P coating was applied on Mg69Zn27Ca4 metal glass in order to improve the alloy biodegradation resistance and biocompatibility. Microstructure observation, electrochemical experiment, immersion experiment and cell cytotoxicity experiment (MG63 cells) were carried out. The result revealed that Ca-P coating exhibited

This work proposes a digital methodology for producing patient-specific wrist immobilisation splint and evaluates form, fit and functional aspects of the fabricated splint by finite element analysis and post production performance testing. The upper limb of a volunteer is first scanned using a 3D scanner, then the data is reverse engineered to obtain a CAD model of the desired splint. Finally, A polyamide

Friction stir processing (FSP) can play an important role in grain refinement, redistribution of second phase and texture evolution. In this study, different rotation speed was employed during FSP to process Mg-Zn-Nd (ZN20) alloy with different grain size, texture and distribution of second phase. Immersion test combined with observation on corrosion morphology was carried out to evaluate the corrosion

Designing a scaffold with appropriate level of porosity, mechanical strength and bioactivity is essential for bone tissue engineering. In this study, a hydroxyapatite (HAp)/diopside nanocomposite scaffold was fabricated through foam replication method. The optimal sample was specified using central composition design (CCD) statistical method regarding HAp to diopside weight ratio, sintering temperature

Metal Assisted Chemical Etching (MACE) is applied for generation of SiNWs (SiNWs). For the first time, the curved SiNWs are directly generated using MACE approach without any surface post-treatment after formation of SiNWs. This leaves the surface of the SiNWs intact without changing the surface composition. For comparison, straight SiNWs are generated under the same etchant and catalyst conditions

S. aureus  and S. epidermidis are the most common bacteria responsible for causing implant infections. We propose that 3D-printed antimicrobial biomedical devices are a rational solution for the prevention of infection. 3D printed polylactic acid (PLA) constructs were alkali-treated to increase hydrophilicity and functionalized using a suspension of Zinc/HNTs-Ag-Chitosan Oligosaccharide Lactate (ZnHNTs-Ag-COS)

The adsorption properties of two kinds of metal–organic frameworks (MOFs), PCN-228ʹ and PCN-230, have been studied by the grand canonical Monte Carlo (GCMC) method for the absorption of N2, H2, CH4/H2 mixed gas. Their pore size distributions are analysed by the Horvath-Kawazoe (HK) method. The PCN-230 exhibits an outstanding volumetric density for hydrogen storage endowed by its ultralow density and

The objective of present work was to isolate the mucilage as polysaccharide from the seeds of Cassia obtustifolia and to modify the isolated polysaccharide chemically by thiolation and carboxymethylation to develop novel excipient for drug delivery application. The attempts were made to enhance mucoadhesive potential of Cassia obtustifolia seed mucilage by thiolation and to reduce the disintegration

Objective: To construct a porous titanium-based implant with good biocompatibility and appropriate modulus matching human bone. Methods: Porous titanium with triangular, quadrangular and hexagonal prism as structure monomer were constructed by 3D printing, and the effects of pore structures on the mechanical and biological properties of materials were investigated by computational simulation, mechanical

Drug release properties for transdermal route can be better modified as per requirement which is mostly dependent upon the carrier system. In case of organic film-forming systems, the physical properties may not be achieved for successful delivery of drug through transdermal route. A novel organic-inorganic hybrid film-forming gel may fulfil these expectations to many extend. The present study focuses

The growing need for sustainable technologies has attracted considerable interest in the synthesis of ecofriendly materials. This paper reports the anti-inflammatory and antibacterial activities of sustainable silver nanoparticles (AgNPs) fabricated using endophytic fungus extracted from a medicinal plant, Cassia fistula. Fourier transform-infrared and UV-visible were used for AgNPs characterisation

In recent years, the usage of hydrogels in tissue regeneration and controlled drug release systems have been increasing rapidly due to their water holding capacity and 3D structure. In this study chitosan and dextran sulphate sodium were prefered to form pH-sensitive hydrogel by physical interaction. The biodegradability of the chitosan and the therapeutic properties of dextran sulphate sodium make

In this study,we prepared the 15-5 PH stainless steel samples using the wire-arc additive manufacturing (WAAM) technique. The performances for as-welded samples and samples after post-weld heat treatment (1050°C×1 h) was studied systematically. The main phases are martensite and grain boundary precipitates. There are many dislocations in the crystal structure of the as-welded samples. The Cu phase

Density functional theory (DFT) method was carried out to investigate the molecular interaction between metalloporphyrin-based sensor and propanol. The relative energies were used to determine the most stable state of metalloporphyrin and its complexes at three different spin states for further theoretical studies. The low-spin states were found to be the most stable states for cobalt porphyrin (CoP)

Innovative temperature measurements based on contactless luminescence thermometry require materials that exhibit a significant change of the luminescence parameters in set temperature range. PbMoO4 and PbMoO4 doped with copper ions single crystals with optically good quality are grown using low-thermal-gradient Czochralski technique. PbMoO4 and PbMoO4:Cu2+ samples reveal intense photoluminescence band

In this research, Al2O3-Ag anodic coating was synthesised by a single-step anodising and the antibacterial properties were investigated. The microstructure of the coatings was studied by FESEM and XRD analyses. The hardness test was also carried out to assess the mechanical properties of the coatings. Antimicrobial susceptibility and colony count test (CFU) methods were used to evaluate the antibacterial

The effects of Mg on microstructure, defects and properties of Al–Si alloy deposited by Wire and Arc-based Additive Manufacturing (WAAM) were investigated. The WAAM alloys were characterised by the metallographic microscope, X-ray diffraction, scanning electron microscope, computed tomography and electronic universal testing machine. The results show that the secondary dendrite arm spacing (SDAS) and

In this work, novel injectable and radiopaque calcium phosphate bone cements were prepared using zirconia short fiber as a radiopacifier. The radiopacity, setting time, injectability, anti-washout ability, microstructure, mechanical property, and the in vitro cytocompatibility of the novel cements were evaluated thoroughly. The results reveal that the incorporation of zirconia fiber significantly improves

Magnesium (Mg) and its alloys are promising materials for a wide range of biomedical applications due to its biodegradability. Nevertheless, their rapid corrosion dictates the need to develop strategies to control these materials’ corrosion rate. In fact, several surface modification techniques have been used to retard the corrosion of Mg and its alloys. Laser technology can be used to tailor Mg surfaces

A novel coordination polymer (CP) based on Eu(III) ion as node [EuK(BPDSDC)(DMF)(H2O)2]n (1, DMF = N,N-dimethylformamide) was produced via application of the bifunctional carboxylic acid sulphonate ligand of the biphenyl-3,3′-disulfonyl-4,4′-dicarboxylate (BPDSDC4 −). Furthermore, complex 1 could be applied as a probe for sensing Cu2+ ion via fluorescence quenching. The coefficient of quenching Ksv

The aim of the present research was to find out the in vitro biological behaviour by evaluating the bioactivity of scaffolds for bone tissue engineering and to examine the mechanism of baghdadite and apatite formation. For this purpose, baghdadite scaffolds with polycaprolactone and graphene nanocomposite coatings were fabricated using polymeric sponge and dip-coating methods. Results showed that regarding

In this research, an aqueous extract of Daphne mucronata leaves with different salt sources including Zn(NO3)2 and ZnSO4 solutions were used to synthesize ZnO-N and ZnO-S NPs, respectively. The physicochemical, antibacterial, antioxidant, and cytotoxic properties of these NPs were also surveyed. SEM and TEM images confirmed that the ZnO-N and ZnO-S NPs were polydispersed with spherical and plate shape

Protonated g-C3N4/MoS2 heterojunction with enhanced photocatalytic activity was prepared by treating g-C3N4/MoS2 with formic acid and using a hydrothermal method. The microstructure and morphology of the heterojunctions were analysed by XRD, FTIR, SEM, TEM, and XPS technology, respectively. The photodegradation experiment results verified that the formic acid treatment has a positive effect on the