We used force-field-based molecular dynamics to study the interaction between polymers and carbon nanotubes (CNTs). The intermolecular energy single-walled was computed, morphology of adsorbed surface investigated. Furthermore, "wrapping" by polymer chains examined. It found that specific monomer structure plays a very important role in determining strength polymers. results our suggest with backbone containing aromatic rings are promising candidates for noncovalent binding into composite...

We report the experimental determination of elastic properties suspended multilayer WSe2, a promising two-dimensional (2D) semiconducting material combined with high optical quality. The WSe2 membranes have been fabricated by mechanical exfoliation bulk and transfer exfoliated flakes onto SiO2/Si substrates pre-patterned hole arrays. Then, indentation experiments performed on these an atomic force microscope. results show that 2D modulus increases linearly while prestress decreases as number...

Development of wearable sensing platforms is essential for the advancement continuous health monitoring and point-of-care testing. Eccrine sweat pH an analyte that can be noninvasively measured used to diagnose aid in a wide range physiological conditions. Surface-enhanced Raman scattering (SERS) offers rapid, optical technique fingerprinting biomarkers present sweat. In this paper, mechanically flexible, nanofibrous, SERS-active substrate was fabricated by combination electrospinning...

Abstract This report presents a simple and efficient method of layer thinning p‐type doping WSe 2 with vapor XeF . With this approach, the surface roughness thinned can be controlled to below 0.7 nm at an etched depth 100 nm. By selecting appropriate exposure times, 23‐layer 109‐layer down monolayer bilayer, respectively. In addition, etching rate exhibits significant dependence on pressure thus tuned easily for or patterning applications. From Raman, photoluminescence, X‐ray photoelectron...

4D printing can be defined as the fabrication of structures using smart materials that allow final object to change its shape, properties, or function in response an external stimulus such light, heat, moisture. The available technologies, materials, and applications have evolved significantly since their first development 2013, with prospective within aerospace, manufacturing, soft robotic industries. This review focuses on technologies currently for fabricating these structures....

Nanofibers of the poorly water-soluble antibiotic ciprofloxacin (CIP) were fabricated in form an amorphous solid dispersion by using poly(vinyl pyrrolidone) as a polymer matrix, low-cost electrospinning method. The solubility nanofibers well their vitro diffusion remarkably higher than those CIP powder or physical mixture two components. fiber size and morphology optimized, it was found that addition to solution decreased nanofiber diameter, leading increased specific surface area....

Plastic microfibres originating from laundry wastewater are released in significant numbers to the environment due a current lack of suitable removal technology. Advanced oxidation processes could offer promising option mitigate problem their ability destruct organic pollutants rather than transferring them other forms. In this study, effect UV irradiation and hydrogen peroxide treatment on microplastics (MPs) was determined. MPs mass loss, carbonyl index (CI) change, physical changes...

Polyphenylene sulphide composites with recycled carbon fibres are of high interest due to their promising mechanical properties. Poor interface adhesion between fibre and thermoplastic matrix, however, remains a major problem in composite manufacturing. Herein, novel one-step method using bio-inspired copolymerisation dopamine graft silica nanoparticles onto the surface is reported. Comprehensive investigations were conducted fabricate treated characterise modified samples by analysing...

The phase separation of high-density polyethylene (HDPE)-polypropylene (PP) blends was studied using atomic force microscopy in tapping mode to obtain height and images. results are compared with those from scanning electron imaging connected the thermomechanical properties blends, characterised through differential calorimetry, dynamic mechanical analysis (DMA), tensile testing. Pure PP, as well 10:90 20:80 weight ratio HDPE-PP showed a homogeneous morphology, but 25:75 exhibited...

The manufacturing process of a new generation thermoplastic fibre-metal laminates (TP-FMLs) was investigated. A vacuum assisted resin infusion method used to produce the hybrid laminates. effect various chemical and physical treatments on surface morphology aluminium (Al) alloy sheets bond strength at metal-composite interface examined. wettability, topography composition treated Al were studied by employing contact-angle goniometry, coherence scanning interferometry, profilometry X-ray...

Rheology and atomic force microscopy (AFM) were employed to examine the microstructure of β-sitosterol:γ-oryzanol organogels in sunflower oil. Using time-resolved rheology, we followed gel formation, paying specific attention fibril aggregation process, which had not been studied detail previously for this system. AFM, observed structures directly obtained detailed information on structure, far exceeding previous studies. Our analysis suggests that though gels are formed by self-assembly...

There is a potential for direct model manufacturing of abdominal aortic aneurysm (AAA) using 3D printing technique generating flexible semi-transparent prototypes. A patient-specific AAA was manufactured fused deposition modelling (FDM) technology. flexible, thermoplastic polyurethane (TPU), called Cheetah Water (produced by Ninjatek, USA), used as the transparent material manufacture with hydrophilic support structure printed polyvinyl alcohol (PVA). Printing parameters were investigated to...

Genetically identical bacteria possess varying numbers of surface-adhering patches.

Abstract Leading edge erosion (LEE) affects almost all wind turbines, reducing their annual energy production and lifetime profitability. This study presents results of an investigation into 18 operational farms to assess the validity current literature consensus surrounding LEE. Much historical research focuses on rain erosion, implying that this is predominant causal factor. However, showed impact excessive airborne particles from seawater aerosols or adverse local environments such as...

The addition of piezoelectric zinc oxide (ZnO) fillers into a flexible polymer matrix has emerged as potential piezocomposite materials that can be used for applications such energy harvesters and pressure sensors. A simple approach the fabrication PDMS-ZnO nanocomposites based on two ZnO fillers: nanoparticles (NP) nanoflowers (NF) is presented in this paper. effect fillers' geometry size thermal, mechanical properties discussed. sensors were fabricated sandwich-like structure using...

Herein, the one-step fabrication of novel three-dimensional sponge-like piezoelectric electrospun nanofiber structures is reported. Ferroelectric polymers are biocompatible and flexible materials that present attractive opportunities for portable energy harvesters efficient wearable electronic devices. While being compatible with diverse methods, thicker denser 3D forms have only been obtained from extruder-based, low-yield approaches. Electrospinning polyvinylidene fluoride (PVDF)...

This paper provides evidence and discusses the variability in thermomechanical behaviour of virgin recycled polypropylene/high-density polyethylene blends without addition other components, which is sparse literature. Understanding performance polymer critical importance order to facilitate re-entering materials consumer market and, thus, contribute towards a circular economy. an area that requires further research due inhomogeneity materials. Therefore, thermal mechanical properties were...

We analyze the surface morphology of metals after plastic deformation over a range scales from 10 nm to 2 mm, using combination atomic force microscopy and scanning white-light interferometry. demonstrate that an initially smooth during develops self-affine roughness almost four orders magnitude in scale. The Hurst exponent $H$ one-dimensional profiles is found decrease with increasing strain then stabilizes at $H \approx 0.75$. By analyzing their statistical properties we show can be...

In this paper, we study the polymer conformation of chemically end-grafted chains in bad-solvent conditions using a scanning force microscope. The layers were prepared by exposing gold substrate dilute toluene solution thiol-terminated polystyrene (PS-SH). Although adsorption process took place good-solvent conditions, imaging was performed water (bad solvent for chains). For short incubation times and low concentrations, identified individual chains. longer (higher surface coverage),...

Strengthening of carbon nanotube/epoxy resin composites was achieved by adding a small amount copolymer (0.03 wt% epoxy resin) as dispersant. Tensile testing used to measure mechanical properties. Young's modulus and fracture stress the nanotube with were found be about 50% higher than for pure resin, 20% composite without dispersing agent. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)