In this article, heterostructures from graphene (G) and molybdenum disulfide (MoS2) were used as electrode materials in a hybrid supercapacitor. A general and facile method for the preparation of a G/MoS2 hybrid supercapacitor has been developed. Using a slurry technique, the G/MoS2 hybrid supercapacitor electrode was fabricated and its electrochemical performances in aqueous solution were investigated

Iron oxide nanostructures have been studied extensively because of their excellent magnetic, optical, electrical, and catalytic properties. This work introduces a simple process to synthesize directly bi-phase α-/γ-Fe2O3 submicron flowers on an Fe foil in NH4OH. The flowers are assembled by using many nanoplates with an estimated thickness of 20–80 nm. The shapes and dimensions of the flowers can be

The evolution of next-generation neural interfaces toward high-density, high-fidelity, and long-term recordings coupled with the advent of complex fabrication techniques drives the development of 3D nanostructures to bridge the neuron-artificial device interface. This is largely due to several observations of high signal-to-noise ratios recorded from high-aspect-ratio 3D nanoelectrodes enabled by an

Microfluidics has demonstrated enormous potential through its role in recent advances in biological sciences. However, designing a new and customized microfluidic platform, gaining a better understanding of its function and the underlying physics still pose significant technical challenges. On the one hand, experimental approaches have been commonly used for the development of microfluidic devices

Diatomite is mined in Phu Yen province, Vietnam and the Fe2O3-diatomite materials are synthesized by a simple process for the photo-Fenton reaction of rhodamine B (RhB) degradation. The pure diatomite and Fe2O3-diatomite materials have large pore structures representing the high adsorption ability and efficient photocatalysis. Characterizations of diatomite-Fe2O3 materials were determined by X-ray

A dominant interfacial recombination pathway in the dye sensitized solar cell (DSSC) was suppressed by coating graphene oxide (GO) on the titanium dioxide (TiO2) nanoparticle layer via the electrophoretic deposition (EPD) method. DSSC utilizing 5 min coating of GO by EPD on TiO2 nanoparticle layer showed 5% enhancement in the photo-conversion efficiency (from 5.7% to 6.0%), and 5% enhancement in the

In this paper, we report on the synthesis of solid polymer electrolytes (SPEs) on the basis of 95 wt.% PEO and 5 wt.% of anhydrous cobalt (II) chloride hexahydrate (CoCl2·6H2O), hereafter called PCL5, by the spin-coating technique using different types of glass (normal, quartz, ITO) substrates. The PCL5 electrolyte exhibits the highest conductivity and the lowest optical bandgap and hence, it was selected

A manganese oxides mediator was electrodeposited onto a low-cost pencil graphite electrode (PE) from an easily available and affordable potassium permanganate precursor. The modified manganese oxides coated PE (MnOxides/PE) was previously utilized as a hydrogen peroxide sensor according to its electrocatalytic activity for hydrogen peroxide oxidation in an ammonium buffer (pH 9.0) medium. The amperometric

Suitable three-dimensional scaffolds showing controllable drug delivery properties, known as multifunctional scaffolds, have gained increasing interest for soft tissue engineering. Here, tetracycline hydrochloride-encapsulated polylactic acid (TCH-PLA) microparticles prepared by using the double emulsion/solvent evaporation method were incorporated into a gelatin matrix. Highly interconnected porous

The lithium titanate (LTO) nanoparticles have been prepared by a chemical and green synthesis method and characterized by XRD, FE-SEM, FTIR, Raman, CV and EIS analysis. The XRD result ensured that the LTO exhibits a cubic spinel structure with the space group of Fd3m. The surface morphology of the prepared anode materials has been studied by FE-SEM and TEM analysis. The LTO nano anode material prepared

To promote and enhance the biological responses of the implant hydroxyapatite (HAP) coatings these are modified by substitution with various ions for the development of bioactive bone implants. In the present work, we have fabricated a MgO/Tb,Eu-HAP dual substituted hydroxyapatite coating on borate passivated 316L stainless steel (316L SS) by the electrodeposition method. The MgO/Tb,Eu-HAP dual substituted

This study deals with the fabrication and tribo-mechanical characterization of magnesium (Mg)-silicon carbide (SiC)- graphite (Gr) hybrid metal matrix composite (MMC). The hybrid MMCs were fabricated by a mechanical alloying process and their mechanical and tribological properties were investigated as well as compared with those of the base material and the Mg-Gr composite. The morphology analysis

Micro-nanoscale core-shell particles are distinguishable from other particle types because of their unique composition. Core-shell particles combine the features of both the core and shell materials, while exhibits smart properties resulting from their materials. In the past few years, the research community has paid increasing attention to the generation and application of core-shell structures. The

Human-pathogenic viruses are still a chief reason for illness and death on the globe, as epitomized by the COVID-19 pandemic instigated by a coronavirus in 2020. Multiple novel sensors have been invented because diseases must be detected and diagnosed as early as possible, and recognition methods have to be carried out with minimal invasivity. Sensors have been particularly developed focusing on miniaturization

Flexible electronics are excepted to be an important support for the next electronic age, and their quick, cost-effective, and easily realized fabrication is a key factor that motivating the on-going applications. The fabricating technique derived from day-to-day handwriting has prompted the advancement of producing flexible electronics with readily available, low-cost and user-friendly tools. Combined

In this work, for the first time we report a novel method on the fracture toughness enhancement of 3 mole % yttria-stabilized tetragonal zirconia polycrystalline (3Y-TZP) ceramics through the incorporation of 8 mole % magnesia-partially stabilized zirconia (8Mg-PSZ) powders having high fracture toughness. Highly densified composites (x3Y-TZP/y8Mg-PSZ; where x and y vary between 0.25-0.75 wt. %) were

The current study reports on the electroanalysis of Riboflavin (RF) on the surface of a poly DL-phenylalanine modified carbon paste sensor (PDLPAMCPS). The developed sensor caused a noticeable electrocatalytic action for the redox activity of RF in a phosphate buffer solution (PBS) of pH 6.5. This analysis was evaluated using differential pulse voltammetry (DPV) and cyclic voltammetry (CV) techniques

Al doped zinc oxide (AZO) thin films are attempted to be formed on glass substrates via solution processing with 0, 0.5, 1, 2, 3, and 4 at% Al doping concentrations. Analysis of X-ray diffraction patterns and scanning electron microscopy micrographs indicate that the AZO thin films belong to the wurtzite hexagonal structure with (100), (002), (101), (102), (110), (103), (112) and (201) orientations

Amorphous lithium niobate (LiNbO3) films were deposited onto silicon substrates by the radio-frequency magnetron sputtering method in a pure Ar environment and an Ar+O2 gas mixture with various oxygen contents. The oxide charge existing in as-grown films has two components: the positive +Qox distributed in the bulk of a film and the negative -Qox located at the film/substrate interface with a maximum

The aim of this study is the exploration of the potential of Layered Double Hydroxides (LDHs) materials for the treatment of contaminated waters by organic pollutants, using a combined dual process, namely adsorption-photocatalysis. In fact, a series of LDHs of ZnCr-X where (X = Cl, SO4 and CO3) were synthesized and characterized by several techniques such as DRX, FTIR, BET, TEM, and UV-Visible spectrophotometry

Herein, a series of SrTiO3:Nd3+ (1-11 mol %) nanophosphors has been prepared via the conventional hydrothermal route. Their anti-counterfeiting and latent fingerprint visualization applications are reported which show important level-III features and unclonable tags. The cubic structure was confirmed by powdered X-ray diffraction studies with space group Pm-3m (No-221). The photoluminescence (PL) characterization

It is noticed that the buoyantly convective flow of non-Newtonian fluids equipped in the closed cavities is not investigated at the large frame in comparison with the viscous fluids. This is because of the complication of computational boundaries. Therefore, the present analysis is a notable attempt to examine the non-Newtonian fluid equipped in a rhombus-shaped enclosure. The heated T-shaped fin is

The bioreduction of Zinc nitrate hexahydrate using crude leaf extract of Gulmohar, by combustion method at 4000 C is carried out to form the ZnO nanostructures. They were characterized by UV- Visible spectroscopy, XRD analysis, FTIR spectroscopy, SEM, and TEM analysis for the structural and morphological details. The antibacterial activity of pure wurtzite ZnO NPs was carried out by the Resauzarin

To ensure the magnetostrictive softness, the homogeneity, the decrease of the shear-lag effect and the space-saving construction of narrowed longitudinal-transverse L-T magnetoelectric (ME) composites, a novel parallel-connected-multi-bars (PCMB) geometry of PZT/Metglas is proposed and investigated by simulation and experiment. In this case, Metglas layers are structured in different geometries from

NASICON-type electrolyte is one of the possible solid-state electrolytes to be employed in solid-state energy devices. The Li1+xAlxSn2-xP3O12 NASICON-based solid electrolyte materials were fabricated using a mechanochemical milling method at 650 °C for 8 h, where x is from 0 to 0.8. From the X-ray diffraction (XRD) analysis, the crystallographic phases of the parent material and the partial aluminium

Electrochemical hydrogen evolution reaction (HER) using non-precious compounds has gained substantial interest in the development of water electrolyzers. Herein, we report the synthesis of Copper sulfide (Cu2S) micro-hexagons via a hydrothermal method, followed by some of the important physiochemical characterizations and electrochemical measurements towards the HER. Cu2S micro-hexagons could catalyze

The structural, electronic, magnetic, thermoelectric and thermodynamic properties of Ba3MnNb2O9 have been investigated using the full-potential linearized augmented plane wave method. Besides, the thermodynamic properties of the materials of interest have been studied using the quasi-harmonic Debye model accommodating the lattice vibrations effects. A comparison between the computed crystal structure

A colorimetric chemosensor for hydrogen peroxide (H2O2) and biosensor for cholesterol is developed in this work following a ‘label-free and reagentless’ concept. In this strategy, silver nanoparticles (AgNPs) are used as a bifunctional probe, namely, a chemical capture probe for H2O2 recognition and a signal probe for displaying detection results. The working principle of these colorimetric sensors

The monitoring and classification of different gases using a single resistive semiconductor sensor are challenging because of the similar response characteristics. An array of separated sensors can be used as an electronic nose, but such arrays have a bulky structure and complex fabrication processes. Herein, we easily fabricated a gas-sensor array based on edge-grown SnO2 nanowires for the real-time

Excellent conducting solid polymer electrolyte films were prepared by using Polyvinyl alcohol (PVA) and Iron alum through a reactive blending process. The effect of the concentration of the iron alum on the conducting behavior was studied in detail by varying the concentration of the alum in the PVA matrix. The functionality was studied using the Infrared (FT-IR) spectroscopic technique. A thermal

In this study, carbon-encapsulated hematite nanocubes with an edge length of ~20 nm (α-Fe2O3@C) were prepared by a two-step hydrothermal method using glucose as a carbon source. The α-Fe2O3@C nanocomposite was found to exhibit enhanced adsorption efficiency for inorganic chromium (VI) ions as compared to bare α-Fe2O3 nanocubes. At optimized conditions, the maximum adsorption capacity and removal efficiency

In this article, we provide an in-depth review of important works on phase segregation which occurs as a result of mixing organic semiconductors with polymeric additives. Throughout the discussion, the indispensable correlations among phase segregation, crystal growth, layer structure and film morphology are showcased using specific examples that mainly entail small-molecule organic semiconductors

3D lion's mane like AlV3O9 microspheres deposited on the well-exfoliated graphene were successfully synthesised through a facile solvothermal method where the graphene sheet was prepared solely via the liquid phase exfoliation process. The highly electrical conductive graphene was introduced as a conductive substrate or a backbone to support the diffusion of the electrolyte ions (OH−). In order to

We report on a controlled process of atomic-scale material design based on calcination-temperature-induced structural variation and its influence on capacitive energy storage characteristics of spinel-structured NiCo2O4 rods (NCOR). Precisely, morphology-tuned NCOR were grown through a facile solvothermal process followed by a controlled calcination. The meticulous thermal-kinetics study revealed that

In the present work, ZnO:Dy3+ nanophosphors were synthesized by a simple, cost effective and eco-friendly route using the aqueous extract of Azadirachta Indica leaves. The prepared ZnO:Dy3+ nanophosphors were characterized using X-ray diffraction (XRD), Fourier Transformed Infra-Red (FTIR), Raman, UV-VIS diffuse reflectance (UVDR) spectroscopy and Photoluminescence (PL), Transmission Electron Microscopy

A high-performance non-volatile memory with low power consumption for long battery life and for large data storage is one of the key requirements of the wearable and other electronic Internet of Things (IoT) devices. In this study, we have fabricated and investigated the resistive switching behavior of an RRAM device using the nanocomposite of polyvinyl alcohol (PVA) and graphene oxide (GO) as the

We present a performance enhancement evaluation of n + doped graded InGaN drain/source region-based HfO2/InAlN/AlN/GaN/AlN on SiC metal-oxide-semiconductor high electron mobility transistor (MOS-HEMTs) with a T-shaped gate. Impact on the device characteristics with the inclusion of a HfO2 surface passivation layer and an AlN buffer layer in the MOS-HEMT structure as a performance booster has been analyzed

Tissue engineering is emerging as a modern medicine fascination towards the establishment of human tissue banks; yet, these approaches typically involve cultures of only one type of cell and, therefore, do not recapitulate the native tissue physiology in toto. Co-culture models, comprised of different cell types, can potentially create the next level of complexity. However, conventional approaches

In the present study, we report on the synthesis of ZnO nanoparticles using Tilia Tomentosa (Ihlamur) leaves extract followed by calcination at 400 °C for 15 min. The prepared ZnO nanoparticles were characterized by XRD and SEM to study the phase and microstructure, respectively. The XRD analysis showed the absence of impurity peaks and the SEM image confirmed the spherical nature of the prepared ZnO

The consequence of the site selective substitution of La3+ ions in modifying the local crystal structure in red emitting titanate perovskites and the resulting enhancement of the luminescence properties were investigated in two distinct series of red phosphors of Sr1-x-yLaxTiO3:yEu3+ and Sr1-x/2-yLaxTi1-x/2O3:yEu3+. Herein, the red emission line was found sharply magnified for the substitutions at

A new method for the determination of dopamine (DA) and paracetamol (PCT), based on the azo “coupling reaction with oxidized 2,4-dinitrophenylhydrazine (DNPH), has been established. This method was based on the fact that in the HCl buffer solution, potassium ioadate oxidized 2,4-dinitrophenylhydrazine to form the diazonium chloride at 0–5 °C and then the diazonium ion reacted with the phenolic compounds

In this study, pH responsive carboxylic cellulose acetate nanoparticles (CCA NPs) have been evaluated as drug nanocarriers for controlled release of drug. Herein, carboxylic cellulose acetate (CCA) was initially synthesized via oxidation of cellulose using a 2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl (TEMPO) as an oxidant and followed by the acetylation of carboxylic cellulose in the presence of iodine

The structural and magnetic properties of Fe/Fe3O4 nanocomposites, synthesized by combined high energy ball milling and controlled oxidation, have been studied. An X-ray diffraction analysis of the crystal structure of the nanocomposites confirmed the coexistence of Fe and Fe3O4 phases. An increase of the oxygen concentration during oxidation process led to the formation of a higher fraction of the

This work investigates the effect of the ratio of the explored Pt area in the electrolyte medium and the photoanode area (REP) on the performance of dye-sensitized solar cells (DSCs). It is found that the power conversion efficiency of DSCs increases by the ascending REP. The highest power conversion efficiency, which was obtained for the cell with the REP of 64/49, was 8.40%. Furthermore, a relationship

Investigations of structural defects and their associated impact on the optical properties of optical materials are essential expediencies because different methods are involved in the preparation of those materials for display applications. Lanthanide ion doping is a simple structural probing strategy that facilitates the challenges of identifying the structural defects. Pure and terbium (Tb3+) doped

Li–Nb–O amorphous films were deposited onto Si substrates by the radio-frequency magnetron sputtering method in an Ar environment and an Ar(60%)+O2(40%) gas mixture. A positive effective fixed oxide charge Qeff having negative, -Qeff, and positive, +Qeff, components, exists in the as-grown heterostructures. -Qeff is located near the substrate/film interface, whereas + Qeff is determined by a deficit

Indium-substituted yttrium iron garnet samples, Y3Fe5−xInxO12 (x = 0–0.7, step 0.1), were prepared using a citrate solgel method. Synchrotron X-ray diffraction (SXRD) measurements combined with the Rietveld refinement technique were used to investigate the crystallization, structure parameters and lattice distortion in the samples. Magnetization and Curie temperature of the samples were measured with