While triboelectric nanogenerators (TENGs) made of biomaterials are becoming significant components of self-charged monitoring healthcare systems, most of them show low output performance and poor durability. Herein, a surfactant-free graphene oxide-polylactic acid (GO/PLA) nanocomposite with customizable honeycomb patterns is, for the first time, prepared via a scalable two-step solution method to

We investigated the luminescent properties of Ho3+ and Yb3+ co-doped AZrO3 (A = Ca, Sr, and Ba) perovskite nanocrystals synthesized using a combustion method. X-ray diffraction measurement revealed that these nanocrystals exhibited differences in their structural symmetries, varying from orthorhombic in CaZrO3 to cubic in BaZrO3, with an increase in their grain sizes and an enhanced degree of crystallinity

In this work, the influence of Graphene oxide (GO) on the sensing performance of Polyaniline (PANI) toward NH3 and CO gases at room temperature (RT) was comprehensively studied. The PANI/GO nanocomposite was synthesized by the “in-situ chemical oxidation polymerization” route in the presence of GO. The optical, spectroscopic and structural properties of as-prepared materials were studied through UV–vis

High-performance MXene based capacitive humidity sensor is fabricated by a drop casting method. The material is characterized by Fourier Transform Infrared Spectrometry (FTIR), Energy Dispersive X-ray Spectroscopy (EDX), Scanning Electron Microscopy (SEM), and X-ray Diffraction (XRD). The fabricated capacitive humidity sensor was tested at various frequencies (100Hz-1MHz) in a broad relative humidity

The stochastic nature of conductive filament formation and dissolution always leads to large fluctuations of key device parameters that hinder the practical applications of resistive random-access memories (RRAMs). Here, we report a simple bilayer oxide-based device structure of Al/TiOx/TiOy/FTO (x < y) employed to address this variability issue and improve the overall performance of memory devices

HfxZr1-xO2 and lanthanum-doped HfxZr1-xO2:La thin films are candidates for applications in ferroelectric random-access memory. Here, we explore the atomic and electronic structure of Hf0.5Zr0.5O2 and Hf0.5Zr0.5O2:La thin films grown by atomic layer deposition. Using X-ray photoelectron spectroscopy, it was found that the oxides under study have an almost identical electronic structure and a bandgap

Cellulose paper, a material that is naturally derived, low cost, lightweight, eco-friendly, and mechanically deformable, plays important roles in producing next-generation flexible electronics. Following the booms in the development of functional electronics, the soft actuators built from cellulose paper have attracted great attention. In this focused review, the milestones and recent achievements

Hydrogel-based supercapacitors with excellent mechanical properties can overcome several unsettled challenges that current wearable power supply devices confront as a result of the distinctive dense intriguing nanostructures of hydrogels, which serve as an ideal candidate with durability and reliability for supplying power to truly wearable electronics. More importantly, benefiting from the broadly

An economic low-temperature self-ignition solution combustion method was used to synthesize 1–11 mol% chromium ion (Cr3+) doped MgAl2O4 nanoparticles (NPs). The structural, morphological and energy gap variations due to the influence of Cr3+ on the host matrix were evidenced by powder X-ray diffraction (PXRD), Fourier transformed infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS)

The backreaction in dye-sensitized solar cells (DSSCs) was long ago recognized as one of the main causes of decreasing energy conversion efficiency. Hence, many different approaches have been attempted to reduce the backreaction. In the present work, we use nitrogen additives in the electrolyte to reduce the backreaction with TiO2 and I3−. Intensity-modulated photocurrent/photovoltage (IMPS/IMVS) and

Two-dimensional (2D) Ti3C2Tx MXene sheet possesses its interesting electrical and optical properties and has thus aroused widespread interest in a wide range of flexible optoelectronic device applications. A clear understanding of the friction behavior and performance, of MXene and other transparent materials (e.g., SiO2) will enable these promising applications. In this study, the frictional behaviors

The effect of interfacial layer (SnOx) on the performance of the complementary electrochromic devices (ECDs) was examined, revealing that the SnOx/WO3 bilayer cathodes could enhance the electrochromic performance, such as a superior long-term cycling stability over 10,000 cycles, a high coloration efficiency of 101.61 cm2 C−1 and a maximum transmittance modulation of 49.27%@633 nm. Moreover, compared

Organic small molecules are a very promising kind of materials in energy storage devices because they are green, low-cost and renewable resources. However, the poor of electrical conductivity of organic molecules limits their using as electrode materials. The combination of organic molecules and conductive carbon material is a useful method to enhance their electrical conductivity. Here, Gallic acid

A novel class of nanocrystalline/amorphous Gd3Ni/Gd65Ni35 composite microwires were created directly from melt-extraction through controlled solidification. X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area electron diffraction (SAED) confirmed the formation of a biphase nanocrystalline/amorphous structure in these wires. Magnetic and magnetocaloric experiments indicate

Wool-coiled MoSrOS bimetal oxysulfide catalysts were synthesized by a simple method. The catalysts were characterized by different instruments. The MoSrOS reduction activities were also investigated by the reduction of Cr(VI), Rhodamine-B (RhB), Methyl orange (MO), Methylene blue (MB) and 4-nitrophenol (4-NP). The results show that 100 mL (20 ppm) of 4-NP was completely reduced into 4-aminophenol (4-AP)

A three-dimensional reduced graphene oxide/nickel-cobalt sulfide (RGO/NiCo2S4) aerogel was fabricated by an efficient and facile one-step hydrothermal approach. The NiCo2S4 needle-like structure consisted of many small nanoparticles well attached to the surface of the RGO sheet. The prepared aerogel had high porosity and conductivity. As an active electrode material for supercapacitors, the RGO/NiCo2S4

The exploitation of methylammonium lead iodide perovskite-polymer composites is a promising strategy for the preparation of photoactive thin layers for solar cells. The preparation of these composites is a simple fabrication method with improved moisture stability when compared to that of pristine perovskite films. To deepen the understanding of the charge transport properties of these films, we investigated

Herein, we report on the facile fabrication of g-C3N4/SnO2 S-scheme heterojunctions for photocatalytic removal of NO under visible light. Optical and electrochemical investigations indicate the formation of these heterojunctions that enable bending at the interface of g-C3N4 and SnO2 and give rise to an efficient separation. A high photocatalytic 500-ppb NO removal performance of 35% and low NO2 generation

This study aimed to investigate the effects of cobalt (Co) substitution on the structural, physico-mechanical properties, as well as the in vitro bioactivity and biodegradability of akermanite (Ca2MgSi2O7). The XRD patterns showed that the Co substitution did not change the Ca2MgSi2O7 phase. The FESEM micrographs revealed that the partial substitution of Co increased the shrinkage and density of Ca2MgSi2O7

This work presents the controlled synthesis of TiO2/graphene photocatalysts by a hydrothermal method using TiCl4 as the precursor. The influence of the precursor concentration and the reaction time on the growth of TiO2 nanoparticles on graphene is studied and results in the ability to achieve the catalysts with desired TiO2 loadings and dispersion. By means of XPS, Raman, and UV-VIS diffuse reflectance

Composites made from multi-walled carbon nanotubes and polydimethylsiloxane exhibit an excellent piezoresistivity at elastic limits where strain sensitivity reaches 0.93∼0.96 and resistance change due to stretching and compressing matches with loading histograms. Resistance change becomes pulse-like as samples are bent and/or twisted, attributed to rapid increase in intertube spacing. Straining induces

In this article, polythiophene (PTh) and a polythiophene/molybdenum oxide nanocomposite (PTh/MoO3) were synthesized by an in-situ chemical oxidative method. The successful synthesis of both the materials was confirmed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The thermal stability of the

In this work, we study and discuss the proton conductivity properties of MOF-801. Specifically, MOF-801 possesses intrinsic proton carrier sites, μ3-OH groups, in clusters yielding the generation of hydrogen-bonding networks with guest water molecules at high relative humidity (RH), facilitating proton transport. Remarkably, this material has a high proton conductivity of 1.82 × 10-3 S cm-1 under 98%

In this study, a novel polycaprolactone– zeolite nanocomposite Y (PCL – Zeol) scaffold was fabricated as a carrier for sustained release of cisplatin (Cis) for bone cancer treatment. In this regard, after synthesis of Zeol with a proper morphological uniformity, Cis was loaded with a high loading capacity into the cavities of Zeol nanoparticles. Subsequently, PCL – Zeol scaffolds consisting of various

A high working temperature of the ZnO nanomaterial-based gas sensor could shorten the lifetime of the sensor and increase its power consumption. Enhancing the volatile organic compound (VOC) sensing performance of ZnO nanomaterial-based gas sensors in terms of gas response and temperature is vital for their practical application. Decoration of noble metals onto nanostructures is an effective approach

COVID-19 belongs to a typical class of viruses that predominantly affects the human respiratory system, thereby proving to be fatal to many. The virus, along with other air pollutant particulates poses a severe threat to the human respiratory organs. Since the most common transmission mode is respiratory fomites and aerosol particulates, it is necessary to prevent their ingression through a mask. The

Point-defect engineering is an effective way to control the mobility and transparent-conducting performance of sputtered fluorine-doped ZnO (FZO) thin films. In this study, doping with fluorine (F) is accomplished through a simple one-step deposition process and is demonstrated to enhance the crystal quality, eliminate the point defects, and boost the mobility as well as the performance of the films

Ti laminated composites were successfully prepared by employing metallic additive powders between Ti sheets, and using the spark plasma sintering process. Mo, Cr, Si and Co were inserted between Ti layers, and spark plasma sintering was carried out at 1250 °C. Regarding the Ti–Si laminated composite, the final products comprised divided sintered Si and Ti sheets which were not stuck together. A new

Vanillin (VN) is a flavouring substance commonly used in the food and pharmaceutical industry. The rampant use of VN has significant implications on human health. In this work, a sensitive and selective voltammetric sensor to detect VN in food essences and natural vanilla beans was elucidated using a poly(methyl orange) modified graphene paste electrode (PMOMGPE). The surface morphology of PMOMGPE

The osteoblast cell growth and cancer cell inhibition of titanium (Ti) metal implant coated with polyvinyl alcohol (PVA) reinforced hydroxyapatite (HAP) composite were investigated. The fibrous composite of PVA/HAP/folic acid (FA)/Methotrexate (MTX) was coated on the surface of a titanium plate and observed with microscopy. During the PVA/HAP/FA/MTX composite's preparation, the functional changes and

The introduction of 4D printing has revolutionized the manufacturing industry. Current research indicates that 4D printing, although at a nascent stage, is a promising technology that brings immense benefits that will soon outweigh high initial costs. 4D technology is considered an upgrade of 3D printing technology by the introduction of the fourth dimension: time. It has been shown that printed 4D

Cellulose nanocrystals (CNCs) extracted from jute fibers are moderately high in length (up to 1200 nm) and diameter (up to 90 nm). Poly(N,N-dimethylacrylamide-co-3-methacryloxypropyltrimethoxysilane) (pSiDm) is a custom made copolymer with trimethoxy silane groups at one end which facilitates to react with cellulose in an aqueous solution. A very simple, efficient, rapid, and eco-friendly method was

Three different silver nanoprisms (AgNPrs) were combined and used as light-trapping materials in organic solar cells (OSCs). These mixed AgNPrs (M-AgNPrs) increased the photocarrier generation in the OSCs due to the broadband absorption, which was attributed to mutual multiple plasmonic excitations covering the entire visible light region. The M-AgNPrs were incorporated into a poly(3,4-ethylenedioxythiophene):

Mechanical stimuli, including fluid shear stress, osmotic pressure gradient, and extracellular matrix stiffness, significantly affect cellular interactions with drugs in biological structures. This paper introduces an integrated concentration gradient generator (CGG) capable of providing cell monolayers with these stimuli and demonstrates its design, fabrication, and quantification procedures. The

The tertiary hybrid supercapacitor consisting of PEDOT:PSS wrapped reduced graphene oxide/Ni0.5Co0.5Fe2O4 (PGNC) was developed and its supercapacitance performance has been compared with that of the reduced graphene oxide (rGO)/Ni0.5Co0.5Fe2O4 (GNC), carbon nanotube (CNT)/Ni0.5Co0.5Fe2O4 (CNC) and carbon nanotube/reduced graphene oxide/Ni0.5Co0.5Fe2O4 (CGNC). Among all, PGNC exhibits an excellent specific

Micro-structured molecular semiconductor film-based surface-enhanced Raman scattering (SERS) probes are an important analytical tool for both fundamental and technological research. This study proposed a novel zinc oxide (ZnO)-based, three-dimensional (3D) semiconductor nanoflower (NF) superstructure probe with unique physicochemical properties, including engineered hotspots allowing an arrangement

The separation of circulating tumor cells (CTCs) that originate from tumor or cancer tissue plays an important role in cancer diagnostics, progression analyses, and treatment proficiency. Cancer metastasis occurs when CTCs spread throughout the body and invade healthy tissues, which leads to new tumors in that area. Although a dramatic rate of death begins from CTCs spreading around the body, valuable

We prepared a hybrid electrode comprosed of a silver nanowires/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (AgNW/PEDOT:PSS) nanocomposite for flexible organic light-emitting diodes (FOLEDs). To increase the conductivity of PEDOT:PSS, diethylene glycol (DEG) was introduced into the PEDOT:PSS solution. The PEDOT:PSS layer shows a higher figure of merits (FoM) when prepared with the optimum

The optimization of the high frequency giant magnetoimpedance (GMI) effect and its magnetic field sensitivity in melt-extracted Co69.25Fe4.25Si13B12.5Nb1 amorphous microwires was systematically studied through a multi-step Joule annealing (MSA) technique. The surface morphology, microstructure, surface magnetic property, and radio frequency GMI response of the Co-rich microwires were explored using

GaOOH powders of submicron dimensions were synthesized through a simple, surfactant-free hydrothermal synthesis at pH values of 7 and 14. Sn and Cr at concentrations of 2 mol% and 1 mol%, respectively, were successfully incorporated into a GaOOH lattice at pH = 7. The synthesized powders were characterized through XRD, SEM, UV-Vis spectroscopy, XPS, and PL spectroscopy to untangle their structural

Abstract In the present paper, various fluxes assisted Eu3+ doped SrTiO3 nanophosphors were prepared via a solution combustion route. Among all fluxes, NH4F was found to be an appropriate one, which can reduce the forming temperature, improve morphology and enhance the luminescence intensity by two-fold to that of without added flux. Hence, NH4F assisted with SrTiO3:Eu3+ nanophosphor was utilized to

Abstract Dielectrophoresis (DEP) is known as an attractive and frugal technique to manipulate biological particles in microfluidics. This study presents the advanced solution strategy of a DEP-based microfluidic channel for focusing and separating cancerous cells in continuous flow. Theoretical calculations were carried out to define the favorable parameters in the electric field operation of the microchip

Abstract The micro/nano surface structure of triboelectric layers possesses a critical impact on the performance of triboelectric nanogenerators (TENG). Here, we present a solution for the enhancement of the triboelectric performance by utilizing a Q-switched Pulsed Laser (QSL) that directly writes on an Aluminum surface in the net configuration. The crinkled nanostructure of the surface of Polytetrafluoroethylene

Abstract Novel and highly effective red emitting phosphor Pr3+ doped (1-11 mol %) Lanthanum Oxyfluoride (LaOF) nanoparticles were synthesized as part of solid state white light emitting diodes by a low temperature solution combustion method using Centellaasiatica leaf extract as a reducing agent. The structural and optical characterization of the nanophosphor is described. The nanophosphor shows a

Abstract In this work, we have synthesized BaWO4-MoS2 nanocomposites by the simple co-precipitation method and investigated their photocatalytic activities with Rhodamine B as a test contaminant. The BaWO4/MoS2 photocatalyst was characterized by X-ray diffraction (XRD), Energy dispersive X-ray analysis (EDAX), Fourier Transform Infra-Red spectroscopy (FT-IR), and Scanning Electron Microscopy (SEM)

Abstract The acellular adipose matrix (AAM) represents a promising source of biomaterial for applications in soft tissue regeneration. In this study, we aimed to prepare an injectable AAM to serve as a ready-to-use allograft. A fabrication procedure including harvesting, delipidating, and decellularizing was established. Accordingly, we proposed a mechanical disruption during delipidation and a final

Abstract Temperature dependent changes in the structural, nanomorphological and optical characteristics of the 2D layered molybdenum diselenide (MoSe2), processed by electrophoretic coating (EPC) method, were examined. EPC processed MoSe2 was subjected to Raman spectroscopy confirming distinct active modes of A1g, E 1 1g and E 2 2u at 240.9 cm-1, 282.53 cm-1 and 337.7 cm-1, respectively. The in- and

Abstract In the present investigation the wet chemical combustion method is used for the first time to prepare La10Si6O27 phosphors by incorporating Dy3+(1-11 mol %) cations (LNPs). The powder X-ray diffraction patterns of LNPs display the oxyapatite hexagonal phase. The estimated crystallite size, using Scherer's method, is between 20-30 nm and the same was confirmed via Transmission Electron Microscopy

Abstract In the present study, we have follwed the hydrothermal path for the synthesis of gold nanoparticles (Au NPs) from the biomaterial Elaeocarpus ganitrus seeds extract, which is a rapid, eco-friendly, non-chemical way. The prepared NPs were thoroughly analysed by powder x-ray diffraction and high resolution transmission electron microscopy studies and were also tested for anticancer studies.

Abstract In this work, we report a novel strategy to enhance the dielectric breakdown strength and the energy storage performance of lead-free relaxor ferroelectric ceramics through the fabrication of semiconductor/relaxor 0–3 type composites based on 0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3 [BZCT] and ZnO. X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM) measurements

Abstract 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 a 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

Abstract The aim of this study is to explore 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

Orange-red emitting praseodymium (Pr3+) activated yttrium molybdenum oxide (Y2MoO6) nanophosphors (NPs) were synthesized via low-temperature solution combustion method using Aloe vera gel as a surfactant and fuel. The synthesized NPs were subjected to structural, morphological, optical, and electrical studies. The powder X-ray diffraction (PXRD) study reveals that the Y2MoO6 composite consists of a