In this paper we describe a new Mueller matrix (MM) microscope that generalizes and makes quantitative the polarized light microscopy technique. instrument all elements of MU are simultaneously determined from analysis in frequency domain time-dependent intensity beam at every pixel camera. The variations created by two compensators continuously rotating different angular frequencies. A typical measurement is completed little over one minute it can be applied to any visible wavelength. Some...

Nowadays, major research efforts are being carried out, in order to fulfil the demand for sustainable hydrogen production. To accelerate this process, it is important develop efficient and inexpensive materials, going beyond precious metals and, if possible, using metal-free electrocatalysts. Carbon compounds could be an ideal candidate material, thanks their abundancy nature possibility organised nanostructures with beneficial morphologies. Here, we report deposition of vertical graphene...

It is now clear that growing flat graphene nanostructures from the gas phase on planar substrates possible. One of keys to success —particularly in producing a very large specific surface reduced space— use 3D carbon (i.e., vertical nanowalls, VGNWs) over substrate as growth template for deposition electrochemically active materials (as, example, transition metal oxides (TMO)). Vertical also known petal-like, flakes or graphene, can achieve area 1100 m2/g, which comparable greater than...

Organizing a post-fossil fuel economy requires the development of sustainable energy carriers. Hydrogen is expected to play significant role as an alternative it among most efficient Therefore, nowadays, demand for hydrogen production increasing. Green produced by water splitting produces zero carbon emissions but use expensive catalysts. and economical catalysts constantly growing. Transition-metal carbides, especially Mo

Abstract The wetting properties of polyamide 6 rods treated with radiofrequency (RF) low-temperature plasma (LTP) using three different non-polymerizing gases (air, nitrogen and water vapour) were determined the Wilhelmy contact-angle technique. Information on acidic or basic nature ionizable groups generated rod surface was obtained titration. wettability depends gas used, it tends to decrease time elapsed after treatment when samples are kept in an air environment. However, can be...

Flexible lithium-ion batteries (LIBs) have gained significant interest as potential power source solutions for wearable and flexible electronic devices. However, the fabrication of LIBs with optimal flexibility, mechanical stability, high energy density remains a formidable challenge researchers. Transition metal carbides are being investigated capable anode materials advanced lithium ion batteries. In this study, we explore growth molybdenum (Mo2C) vertically-oriented graphene nanowalls...

The functionalization of molybdenum oxide (MoO3) nanoparticles is presented as a method to significantly enhance the cycling stability lithium-ion battery (LIB) anodes based on silicon nanowire (SiNW) arrays. Transition-metal oxides have emerged promising candidates for advanced anode materials in modern Li-ion batteries. In this study, we explore novel approach involving deposition MoO3 via unique drop-casting technique onto pre-fabricated SiNW arrays, fabricated using straightforward...

In the world of advanced energy conversion and storage, silicon nanostructures have garnered immense interest scientists innovators alike with their unique structural, electrical, optical electrochemical properties, setting stage for a brighter, more sustainable future. Amidst array top-down methods, one method stands out as an approach-change: Metal-assisted chemical etching (MacEtch). It is highlighted its cost-effectiveness, simplicity, versatility scalability, making it crucial point in...

Vertical graphene nanowalls (GNWs) have emerged as a highly promising architectural structure, offering vast surface area teeming with active sites and expediting ion diffusion. In our relentless pursuit of bolstering their specific capacitance, we unveil groundbreaking supercapacitive augmentation, incorporating defect-engineered ZnO nanorods (ZNRs) branching out from the GNWs. The realization this hierarchical structure is achieved through meticulous multi-step process, featuring...

Research for the development of noble metal-free electrodes hydrogen evolution has blossomed in recent years. Transition metal carbides compounds, such as W

Efficient hydrogen evolution via water electrolysis requires the use of advanced electrocatalysts. To date, preparation support composites with a high load catalytically active species remains critical challenge. This study demonstrates effectiveness simultaneous laser ablation two targets—a transition metal target and graphite target—for synthesizing 3D nanoporous carbon/transition carbide composites. By varying position followed by postannealing treatment, stoichiometry resulting can be...

To determine self-consistently the time evolution of particle size and their number density in situ multi-angle polarization-sensitive laser light scattering was used. Cross-polarization intensities (incident scattered with opposite polarization) measured at 135° ex transmission electronic microscopy analysis demonstrate existence nonspherical agglomerates during early phase agglomeration. Later development both techniques reveal spherical particles again. The presence strong...

Multiwall carbon nanotubes grown by plasma enhanced chemical vapour deposition were functionalized H2O treatment. Through a controlled functionalization process of the (CNTs) we able to modify and tune their reactivity, expanding range potential applications in field energy environment. In particular, different oxygen groups attached surfaces (e.g. carboxyl, hydroxyl carbonyl), which changed physicochemical properties. order optimize main operational parameters treatment, pressure power,...

Nanostructured Si thin films, also referred as polymorphous, were grown by plasma-enhanced chemical vapor deposition. The term “polymorphous” is used to define silicon material that consists of a two-phase mixture amorphous and ordered Si. plasma conditions set obtain films from the simultaneous deposition radical nanoparticles. Here, careful analysis electron transmission microscopy diffraction reported with aim clarify specific atomic structure nanocrystalline particles embedded in films....

Abstract The effect of water vapour plasma treatment on the shrinkage behaviour and chemical properties surface keratin fibres was studied. wettability shrink resistance wool were improved even at low times. values advancing contact angles treated with provide evidence formation hydrophilic groups in surface. Analysis by XPS reveals that oxidation fatty acid monolayer (F‐layer) prevails over its removal early stages treatment. increase time results a progressive F‐layer. Copyright © 2003...