Materials Literature
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We reported the basal-plane thermal conductivity in exfoliated bilayer hexagonal boron nitride h-BN that was measured using suspended prepatterned microstructures. The h-BN sample suitable for thermal measurements was fabricated by dry-transfer method, whose sample quality, due to less polymer residues on surfaces, is…
Due to its noncentrosymmetric lattice structure, a monolayer of transition metal dichalcogenides (TMD) possesses a very special type of spin-orbit coupling (SOC) called Ising SOC. Unlike Rashba SOC, Ising SOC pins electron spins to the out-of-plane rather than the in-plane direction. In TMD materials, the Ising SOC is…
Colloidal stability of graphene oxide (GO) is studied in aqueous and organic media accompanied by an improved aggregation model based on Derjaguin-Landau-Verwey- Overbeek (DLVO) theory for ultrathin colloidal flakes. It is found that both magnitude and scaling laws for the van der Waals forces are affected significant…
Biomaterials based on polyelectrolyte complexation are an innovative concept of coatings and packaging production to be applied in a wide range of food products. The aim of this study was to obtain and characterize a sodium alginate–chitosan complex material with variable degree of polyion interactions by complexation…
An extremely simple in situ self-transformation methodology is developed to introduce pseudocapacitance into the MOF system resulting in a largely boosted electrochemical performance: a three-fold increase in capacitance as well as improved rate capacity. An all-solid-state hybrid flexible supercapacitor is fabricated…
Cellulose nanocrystals obtained from natural sources are of great interest for many applications. In water, cellulose nanocrystals form a liquid crystalline phase whose hierarchical structure is retained in solid films after drying. Although tactoids, one of the most primitive components of liquid crystals, are though…
Carbon nanotubes (CNTs) represent one of the most studied allotropes of carbon. The unique physicochemical properties of CNTs make them among prime candidates for numerous applications in biomedical fields including drug delivery, gene therapy, biosensors, and tissue engineering applications. However, toxicity of CNTs…
Ni-CeO2 is a highly efficient, stable and non-expensive catalyst for methane dry reforming at relative low temperatures (700 K). The active phase of the catalyst consists of small nanoparticles of nickel dispersed on partially reduced ceria. Experiments of ambient pressure XPS indicate that methane dissociates on Ni/C…
Luminescent materials consisting of boron clusters, such as carboranes, have attracted immense interest in recent years. In this study, luminescent organic-inorganic conjugated systems based on o-carboranes directly bonded to electron-donating and electron-accepting π-conjugated units were elaborated as novel optoelec…
For the first time, two types of highly anisotropic, highly transparent wood composites are demonstrated by taking advantage of the macro-structures in original wood. These wood composites are highly transparent with a total transmittance up to 90% but exhibit dramatically different optical and mechanical properties.
To meet the growing energy demands in a low-carbon economy, the development of new materials that improve the efficiency of energy conversion and storage systems is essential. Mesoporous materials offer opportunities in energy conversion and storage applications owing to their extraordinarily high surface areas and la…
<p>This work is concerned with analysis of cross-plane thermal transfer in nanofilms.</p><p>The paper presents a developed general model of phonon radiation transfer (EPRT) based on the Boltzmann transport equation. The EPRT model assumes that the thermal transfer inside a dielectric or metal medium…
Improved Y and Mn alternately doped Ba0.6Sr0.4TiO3 (BST) films have been prepared by sol-gel method at preheating temperature of 550°C, and the structures and dielectric properties of the films have been studied. The doped concentration of Y keeps at 1% mol ratio, while that of Mn has three different doped concentrati…
Purpose – The purpose of this paper is to provide an overview and some recent advances in the models, analysis and simulation of thermal transport of phonons as related to the field of microscale/macroscale heat conduction in solids. The efforts focus upon a fairly comprehensive overview of the subject matter from a u…
Abstract We report the growth of ZnO nanowires on mesoscale periodically patterned silicon. The aim of this work is to go towards fabrication of multifunctional heterostructured materials for increasing the specific surface area and light absorption properties. ZnO nanowires (NWs) were grown by chemical bath depositio…
In this work, we report Mn-Fe heterodoped ZnSe tetrapod nanocrystals (NCs) synthesized to synergistically enhance contrast in both T1- and T2-weighted magnetic resonance imaging (MRI). The proposed NCs were prepared using a customized heteroarchitecture such that the manganese (Mn) is confined in the core and iron (Fe…
In this paper, we propose a special chiral metamaterial (CMM) structure with a unit cell lacking mirror symmetry, which exhibits asymmetric transmission (AT) of terahertz radiation (1.4–2.3 THz) propagating through it in opposite directions. It is constructed by double-layered four complementary U-shaped resonators on…
Ferroelectric x BiInO 3 −(1 −x )PbTiO 3 ( x = 0.15, 0.20, 0.25, and 0.30) thin films are deposited on (101)SrRuO 3 /(100)Pt/(100)MgO substrates by an RF‐magnetron sputtering method. By adjusting the deposition conditions, the electric properties of the thin films are optimized. The ferroelectricities of the thin films…
El cáncer es la segunda causa de muerte en el mundo. El tratamiento alternativo de hipertermia magnética consiste en elevar la temperatura de las células cancerígenas por medio de nanopartículas magnéticas. En este trabajo se presenta la síntesis y la caracterización de dos ferritas de zinc-calcio (Zn0.50Ca0.50Fe2O4 y…
The composite materials with a matrix from polymer and silicone binders, reinforced by the hollow spherical inclusions (microspheres) are commonly referred to as spheroplastics. A widespred microsphere material is glass, but, it is also possible to use ceramic, carbon, and polymeric microspheres having a diameter with…