ABSTRACT Carcinoembryonic antigen (CEA) is usually utilised as a reliable diagnostic and predictive marker of gastric cancer (GC). Herein, a target-responsive, label-free aptamer ‘signal-on’ fluorescent biosensing system was developed based on the synthesis of DNA-templated quantum dots via one-pot route and interactions with graphene oxide. CEA triggered aptamer-DNA hairpins hybridisation to release

ABSTRACT The thickness of dielectric spacer layer (DSL) plays an important role in performance of plasmonic solar cells. In this work, effect of thickness variation of ITO (indium tin oxide) DSL in silver (Ag) nanospheres/ITO/crystalline silicon(c-Si) structure on forward and backward scattering efficiencies has been investigated. Simulations were carried out using the open-source software MEEP via

ABSTRACT The present study reports the fabrication and characterization of nanofibrous scaffold comprising silk fibroin (SF) and polycaprolactone (PCL) incorporated with vitamin D3 (VD3). The optimized SF/PCL/VD3 nanofibers of average diameter 129±19 nm were obtained by electrospinning technique. The results of the contact angle measurements suggested that the presence of VD3 improves the wettability

ABSTRACT In this paper, we have achieved the hollow shell ZnS QDs with a simple preparation process, and deeply analysed the mechanism of hollow shell ZnS QDs (~10 nm). The co-doping of copper (Cu) and manganese (Mn) caused the cooperated effects on the ZnS quantum dots, in which hollow shell structure can be formed. The mechanism is that Mn2+ ions in ZnS matrix provide some diffusion channels allowing

ABSTRACT Zinc oxide (ZnO) nanoparticles are widely studied for the application of dye-sensitised solar cells (DSSCs). The control of nanoscale morphology and microstructural properties of ZnO is critical for DSSCs performance. The current study provides an insight about the effect of synthesis methods (i.e. co-precipitation and sol–gel) on structural, optical and electrical properties of ZnO nanoparticles

ABSTRACT In this study, bio-nanocomposites of chitosan (CS)/glycerol (Gly)/cellulose nanofibers (CNF) were prepared using the solvent casting method. Effects of Gly and CNF content on properties of nanocomposites were investigated by the FTIR, SEM, tensile, TGA, swelling test, solubility analysis, water vapour permeability and contact angle measurements. Results showed that solubility of the CS-Gly films

ABSTRACT Green synthesis of selenium nanoparticles (Se-NPs) was done using Abelmoschus esculentus extract as the capping and reducing agent and sodium selenite (Na2SeO3) as the selenium source. UV-Vis spectrum confirmed the formation of Se-NPs in the solution. According to the XRD pattern, the average particle size was estimated to be about 30.7 nm. The TEM images shown the spherical shape of Se-NPs

ABSTRACT Novel magnetically separable BiOBr/BiFeO3 heterostructures were fabricated via a facile in situ hydrothermal chemical etching process using cetyltrimethyl-ammonium bromide (CTAB) and sulphuric acid as etching agents to react with BiFeO3 particles. The effects of solution pH and CTAB amount on the structure, morphology, and optical properties of the as-prepared samples were investigated. It

ABSTRACT The energy problem is closely related to the survival and development of human beings. Nowadays, the research of fuel cells is making rapid progress, but the bottleneck of the development of fuel cells is slow oxygen reduction reaction (ORR) of cathode. At present, it is difficult to develop a kind of oxygen reduction catalyst with high performance, low energy consumption and low pollution

ABSTRACT In the present research, CuO nanopowders with high dispersivity were synthesised using a solution plasma method. The effect of K2CO3 as an electrolyte on the phase and morphology of the products was examined. The antibacterial activity was investigated by calculating the diameter of the inhibition zone, minimal inhibitory concentration (MIC), and minimal bactericidal concentration (MBC). The

ABSTRACT In this study, the effect of Cr content on microstructure, mechanical properties and corrosion behaviour of Ti6Al4V alloy produced by selective laser melting (SLM) was investigated. The microstructure exhibited that α' martensite and β phase are obtained in SLM processed Ti6Al4V alloy and Ti6Al4V-Cr system alloys. The increment of Cr content results in the increment of β phase amount. The

ABSTRACT The number of defects is the key indicator that affects the properties of the NiTi alloy fabricated by SLM and can be adjusted by the energy density. In this study, the NiTi alloy was manufactured by varying the laser power from 50 to 95 W and matching the scanning speed of 200 to 900 mm/s at the hatch spacing of 80 and 110 μm. The results showed that the energy density for manufacturing high

ABSTRACT The mineralisation and ion release behaviour of the bioactive glasses play a crucial role for their biomedical applications. It is, however, difficult to control these processes artificially in situ. Herein we utilised NIR radiation as an external stimuli to tailor these processes to match specific requirements. Therefore, the composite bone cements based on borosilicate glass incorporated

ABSTRACT Modern development in nanoscience and nanotechnology has contributed to the varied uses of metal and metal oxide nanoparticles in numerous arena of sciences, research organisations and industries. Among all metal oxides, copper oxide nanoparticles (CuO NPs) has reached more responsiveness as a result of its unique properties and applications. Herein, we report a one-step hydrothermal preparation

ABSTRACT In this study, a simple and one-step cost-effective preparation of rGO/Co3O4 nanocomposite was given out in different monomer concentrations of [rGO]o/[Co3O4]o= 1:1; 1:2; 1:5 and 1:10. The electroactive materials were characterized by many techniques, such as FTIR-ATR, XPS, TGA-DTA, Raman, BET surface analysis, GCD, SEM-EDX, XRD, TEM, CV, and EIS analysis. A symmetric supercapacitor applying

ABSTRACT Graphene (G) was produced and melt-blended with polyamide 6 (PA6) to study the mechanical, electrical, and flame-hindrance characteristics of PA6-G compounds. It resulted that G is well dispersed in PA6 up to 2.0 wt% owing to electrostatic contact. A clear increment in degradation temperature and a drop in extreme degradation degree is detected from the thermogravimetric experiment for PA6-G

ABSTRACT The Ag2O/TiO2 composite photocatalysts (PCs) were synthesised in a facile manner into applied photocatalytic decomposition of methylene blue (MB) dye under visible-light treatment. Then, physicochemical belongings of as-fabricated PCs were analytically categorised by powder XRD, FT-IR, HRSEM with an EDXS, HRTEM, UV-Vis DRS and PL spectroscopy. Associated with the pristine TiO2 and Ag2O, the

ABSTRACT Background: Lipid-polymer hybrid nanoparticles (LPHNP) are used for drug delivery due to their high advantages over polymeric or lipid nanoparticles. Materials and methods: Tamoxifen-Curcumin-loaded-LPHNPs (Tmx-Cu-LPHNPs) were synthetized by the ionic gelation method, and after characterization and calculation of the encapsulation efficiency, its antioxidant power, anti-cancer and anti-metastatic

ABSTRACT Nano-Li2FeSiO4/C composites (LFS/C-325 and LFS/C-221) and nano-Li2FeSiO4 (LFS-325 and LFS-221) with controlled porosity were prepared from the nano-fumed silicas with similar particle size and different porosity. N2 adsorption/desorption analysis reveals that the porosity of nano-Li2FeSiO4/C composites and nano-Li2FeSiO4 can be tuned by the choosing nano -fumed silica and LFS/C-325 possess

ABSTRACT We have synthesized new electrode material for the supercapacitor application. Polyoxovanadates (POVs) have been used for energy storage electrode materials due to their fast multi-electron redox properties. The formation of SDV/GO composites was confirmed using various analytical methods, e.g., Fourier transforms infrared spectroscopy (FTIR) and powder X-ray diffraction (XRD), followed by

ABSTRACT Nanogenerators have attracted particular attention during the last decade. Here, a novel functional triboelectric nanogenerator based on the foam (F-TENG) was inverted. In this design, the foam and the polyvinyl chloride (PVC) are used as the triboelectric materials. The F-TENG can be developed for mechanical energy harvesting, and it also can serve as human hand motion monitoring. Based on

ABSTRACT Low degradation rate is one of the main problems in iron-based alloys as potential biodegradable materials. In this study, Fe-30Mn-1 C-x(x = 0, 0.5, 1, 1.5)Cu alloys were designed to study the determining impact of copper addition and associated ageing treatment on the biodegradation behaviour of Fe-30Mn-1 C alloy system, in combination with the mechanical behaviour of the designed biomaterial

ABSTRACT The ZnO@NiCo-LDH core-shell nanostructures on carbon cloth (CC) are synthesised by a combination of hydrothermal and electrochemical deposition method. The effects of deposition times on the morphology, structure and electrochemical properties of the product are studied. The results show that deposition times at 300 s NiCo-LDH sheets are anchored onto the surface of ZnO NRs, forming a three-dimensional

ABSTRACT Ion substitution in hydroxyapatite (HA) lattice is a promising way to enhance its antibacterial activity and inhibit implant-related infections. In this study, HA/silver (HA/Ag) nanocomposites were synthesised through sol-gel method from two calcium (Ca) and phosphor (P) precursors. Our results showed that, by using P precursor, larger HA particles with higher crystallinity were produced,

ABSTRACT Ultrathin and vertical NiCo2O4 nanosheets were grown on nitrogen-doped reduced graphene oxide (NiCo2O4 NSs@N-rGO) through a simple one-step co-precipitation procedure. The NiCo2O4 NSs@N-rGO nanocomposites were investigated through X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and

ABSTRACT CoCrFeNi high-entropy alloy films were deposited under different substrate bias by magnetron sputtering using a simple splicing target. The hardness, elastic modulus and creep properties of the films were measured by nanoindentation. The results showed that with the increase in substrate bias, CoCrFeNi films were always mainly composed of FCC phase and demonstrated smooth and dense surface

ABSTRACT In recent years, the inorganic lead-based perovskites have significant consideration owing to their excellent structural stability. In this work, we explore the structural, electronic, and optical properties of α-CsPbI3 and Ge-incorporated α-CsPbI3 perovskites through first-principle calculations. The 12.5% of Ge-mixed CsPbI3 has pleasant structural stability compared to CsPbI3. The CsPb(1-x)GexI3

ABSTRACT This present study focuses on evaluation of mechanical properties of three dimensional (3D)-printed carbon fiber/polylactic acid (CF/PLA) composites, using fused deposition modeling (FDM) technique. The composites were prepared with different slicing parameters: layer heights or thicknesses, infill densities and layer patterns. The 3D-printed composite samples were subjected to tensile, flexural

ABSTRACT The aim of this study was to synthesize chitosan nanoparticles loaded with rapeseed extract (RPE-CN) and to evaluate its therapeutic effects. The RPE-CNwas synthesized (Ion gelation), characterized (DLS, FTIR, atomic and electron microscopy) and their toxicity was evaluated by MTT method.Anti-inflammatory and pro-apoptotic effects were evaluated by qPCR method. Its antioxidant power was measured

ABSTRACT The present research was aimed to develop Metoprolol succinate sustained-release tablet by wet granulation using novel polymersEulophia herbacae and Remusatia vivipara tuber mucilage as release retardants. The formulations were prepared using a 32 full factorial design. In the current research, two factors were tested each at three levels. The concentration of Eulophia herbacea mucilage (X1)

ABSTRACT Eu3+-doped CaWO4 nanophosphors were synthesised in series for different atomic wt% concentrations (0, 0.5, 1, 2, 5 and 10) of Bi3+ by polyol method. Their structure and morphology were characterised using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photoluminescence properties and energy transfer from Bi3+ to Eu3+ in CaWO4:Eu3+/Bi3+ nanophosphors were also investigated

ABSTRACT Superparamagnetic Fe3O4 has created major attention towards the drug delivery applications because it is used as the nanocarrier for delivering drugs to the specific tumour site and has less toxicity. The present report reveals a pH-responsive superparamagnetic iron oxide (Fe3O4) nanoparticle comprising with Polyethylene glycol-polymethyl methacrylate (PEG-PMMA) as a drug carrier. This magnetite

ABSTRACT Tendon is a fibrous connective tissue where the fibres as biophysical cues are key regulators to regenerate injured tendon. However, electrospun fibres are often mechanically insufficient for the tendon application. Here, we reported a method by using rough polymer surface as the reinforcement of fibres to promote surface fibre deposition and integration during electrospinning. Results showed

ABSTRACT A novel terbium (Tb3+) and ytterbium (Yb3+) co-doped optical quality CsGd(MoO4)2 single crystals were grown by the low-thermal-gradient Czochralski method. Photoluminescence spectra were measured and studied for Tb3+– Yb3+ doubly doped CsGd(MoO4)2 crystals at 77–340 K temperature range. Under 330 nm excitation the main peaks of Tb3+ and Yb3+ emission were observed. Decay curves were obtained

ABSTRACT Silver nanoparticles (AgNPs) were biosynthesized using the aqueous extract ofMentha  pulegium leaves and were characterized by Ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, Scanning electron microscopy, X-ray diffraction, Energy-dispersive X-ray spectroscopy, and X-ray fluorescence analysis. The bactericidal activity was assayed by disc diffusion and broth microdilution

ABSTRACT In this study, we grafted hydrophilic γ-polyglutamic acid (γ-PGA) with the hydrophobic drug methotrexate (MTX) to develop an amphiphilic and stimuli-responsive nanoparticles (MTX-SS-PGA NPs). The average size and zeta potential for MTX-SS-PGA NPs were 100.5 nm and −20.4 mV. In vitro drug release, the MTX cumulative release of nanoparticles within 72 h, which was more robust at 10 mM GSH (90

ABSTRACT The TaC/TiC/Stellite X-40 Co-based composite coatings with different contents were successfully cladded on a Cr-Zr-Cu alloy substrate. The microstructure, wear and corrosion resistance of the composite coatings were investigated by means of X-ray diffraction (XRD), optical microscope (OM), energy dispersive spectrometer (EDS), scanning electron microscope (SEM), sliding wear test, as well

ABSTRACT Green synthesis of nanoparticles is one of the recent trends nowadays owing to its reduced toxic effects. Our study is aimed at evaluating the biological potential viz., antioxidant and anti-inflammatory properties of gold nanoparticles (AuNPs) biosynthesised using an aqueous extract of Commiphora wightii. The AuNPs synthesis was preliminarily confirmed by colour change from yellow to purple

ABSTRACT In response to the critical needs of high power density, advanced thermal gap fillers (TGF) are required for the long-term reliability of electronics packaging. In this study, dispensable thermal gap filler (Al87GO6) with 87 wt.% Al2O3, 6 wt.% graphene oxide and 7 wt.% polymers were fabricated as two parts (Part A and Part B). The thermal conductivity of cured Al87GO6 (3.87 W/m.K) was 1.03

ABSTRACT Silver nanoparticles (AgNPs) has the potential for membrane development with antibacterial properties. However, the synthesis method and parameter are crucial factors in determining nanoparticles formation and nucleation process. This study presents the effects of precursor concentration and synthesis temperature towards AgNPs formation in two distinctive methods. The results have shown a

ABSTRACT In this study, a novel nitrated bacterial cellulose/2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/ammonium perchlorate nanoenergetic composite was successfully prepared by the sol–gel method and the freeze-drying technology. The structure and composition were characterised by means of scanning electron microscope, X-ray diffractometer and Fourier-transform infrared. The results

ABSTRACT Bi4BaTi4O15(BBTO), an Aurivillius oxide, which is a mixed metal bismuth–layered based oxide fabricated by chemical route, has shown highly efficient photocatalytic activity in degradation of organic dye besides possessing high dielectric constant. The obtained material was characterised by various techniques like Fourier Transform Infrared (FTIR), transmission electron microscope, Scanning

ABSTRACT In this work, the effect of High-Speed Milling (HSM) on Average Surface Roughness (Ra), Maximum Profile Height (Rz), Hardness (H), Young’s Modulus (E) and microstructure have been investigated. HSM with the range of 125–226 m/min is employed to reveal its impact on the machinability of Ti-6Al-7Nb alloy for biomedical application. Effects of Cutting Speed(vc), Feed per Tooth (fz) and Cutting

ABSTRACT Current research focuses on a simple and effective green approach using Tamarix aphylla leaves as capping and reducing agent for the synthesis of silver nanoparticles. The synthesised Ag-NPs were characterised by UV–vis spectroscopy, FTIR, EDX, XRD and SEM analysis. The synthesis of Ag-NP was optimised by examining pH and temperature at different proportions of the reactant mixture. The UV–vis

ABSTRACT A simple and cost-effective synthesis method for zeolitic imidazolate framework-8 (ZIF-8) was developed and loaded with metformin (MET@ZIF-8) for pH sensitive-release behaviour for the treatment of lung cancer. ZIF-8 and MET@ZIF-8 were subjected to particle size, zeta potential analysis and HR-TEM through which it shows evidence that the particles had spherical morphology and nanosize. Percentage

ABSTRACT Biodistribution and tumour agglomeration of chemotherapeutic drugs are improved by nanoparticles augmenting the ratio of efficacy and toxicity. Iron oxide nanoparticles have attracted growing attention in diagnosis, cancer therapy, and smart drug delivery. To simplify the combined therapy and targeting drug delivery such as using ultrasound, we developed magnetoliposome-encapsulated doxorubicin

ABSTRACT Hydrogels are significant hydrophilic materials with 3D polymeric network structures, which have received much attention in recent decades. DNA-based hydrogel materials have been widely used for tissue engineering, biosensors, bioanalysis, and clinical therapy on their excellent stability, bioanalysis, biocompatibility, and programmability. The addition of functional DNA (deoxyribonucleic

ABSTRACT Monetite (CaHPO4) was coated on the Ti-6Al-4 V substrate by hydrothermal method. SEM, XRD, EDS, XPS, Raman spectroscope, and tensile test were used to characterize the morphology, phase constitutes, elemental content, elemental valence states, chemical functional groups, and bonding strength of the coating, respectively. It was revealed that the elevated temperature and prolonged duration

ABSTRACT Niobates are regarded as prospective Li+-storage anode candidates due to the rich chemistry of niobium and crystal-structural openness. However, the exploration of niobates is still insufficient. In this study, we explore CuNb3O8 with a large theoretical capacity is 341.9 mAh g–1 as a high-performance anode compound. The reversible redox reaction among Nb5+, Nb4+ and Nb3+ during lithiation/delithiation

Abstract Biosensors are biological detection systems used for the analysis of chemicals with the help of biological species like enzymes, antibodies, etc. Nanoflowers for the detection of the glucose improve stability, strength and reduce mass transfer limitations. The main objective of the research work was to develop bioconjugated nanoflowers for effective and precise detection of the glucose in

ABSTRACT In this study, doped strontium fluorapatite (Sr-FAP) nanopowders were synthesised by sol-gel and used as a coating to modify Ti-6Al-4V substrates through CO2 laser cladding. The Ca ions of FAP were substituted by a different amount of Sr ions to increase bone cell differentiation and antibacterial properties. Lattice parameters and crystal size values of different samples decrease with increasing

ABSTRACT In order to develop a wound dressing with antibacterial activity, vancomycin-loaded chitosan nanoparticles (V-CNPs) were incorporated into alginate/aloe vera (Alg/Av) porous matrices. According to the SEM micrographs, Alg/Av/CNP dressings had porous structures and mean pore diameter was 109 ± 34 µm. The DSC graphs showed that adding aloe vera increases the stability of the scaffold. The FTIR

ABSTRACT The present investigation was computational predictability of Polyethylene Glycol (PEG) encapsulated modified release multiple unit pellets system (MUPS) tablet of Metoprolol succinate by quality by design (QbD). Quality target product profile (QTPP) and critical quality attributes (CQAs) of MUPS tablets were defined. Risk assessment was done using Ishikawa diagram and failure mode effect

(2021). Correction. Materials Technology. Ahead of Print.

ABSTRACT Aqueous supercapacitor shows a narrow operating voltage range because of the limitation of the water electrolysis, resulting in low energy density. In this work, a nanoporous MnO2 entangled hierarchical porous carbon skeleton (simplified to MHPC) has been successfully prepared. Aqueous asymmetric supercapacitor has been assembled by employing the MHPC as a positive electrode, a hierarchical

ABSTRACT To determine the effect of different temperature on the wear amounts of dental composite material prepared in Pre-heating Temperature (PTG,60°C) and Room Temperature (RTG,23°C). To increase the Degree of conversion (%DC) in material by pre-heating process, and to investigate the effects of the employed method on the amount of wear. To evaluate the effect of %DC on the material’s surface roughness

ABSTRACT This study aimed to determine the effect of the testing method configuration on the bi-axial flexural strength (BFS) of three resin-based dental composites (RDCs). A total of 180 disc-shaped samples (12 mm diameter x 1 mm thickness) for each RDC were fabricated using split back nylon mould. The BFS was determined for specimens made in three commercial RDCs; microhybrid (MH), nanofilled paste

ABSTRACT The objective of the present investigation is to functionalise nitrogen-doped carbon quantum dots (NCQDs) with hydroxyapatite (HAp) and study photoluminescence of the composites under ultraviolet radiation. NCQDs were prepared from microwave irradiation of 3:1 molar ratio of urea and citric acid mixture at 750 W for ~5 min. HAp was obtained via wet-chemical process from reacting 1 mol of calcium

ABSTRACT Recently, nanotherapy has been considered a promising and rapidly evolving field to combat cancer. Both gold nanoparticles and chitosan are interesting materials with biological and antitumor properties. The present study aimed to synthesise chitosan/gold nanocomposites (Cs/Au) using gamma irradiation technique and to study their anticancer, antibiofilm and antimicrobial activities. The synthesized

ABSTRACT Multifunctional motion sensors have broad applications in the field of the internet of things (IoT). An octopus-shaped self-powered motion sensor is proposed to monitor the acceleration, motion direction, rotation speed and angle of objects. The charge transfer analysis of the sensor is carried out based on the positive piezoelectric effect, contact electrification effect and electrostatic