Materials Literature
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This article presents a review on the main applications of the fourth fundamental circuit element, named "memristor", which had been proposed for the first time by Leon Chua and has recently been developed by a team at HP Laboratories led by Stanley Williams. In particular, after a brief analysis of memristor theory w…
The random process theory (RPT) has been widely applied to predict the joint probability distribution functions (PDFs) of asperity heights and curvatures of rough surfaces. A check of the predictions of RPT against the actual statistics of numerically generated random fractal surfaces and of real rough surfaces has be…
Persistent phosphors are a specific type of luminescent materials having the unique ability to emit light long after the excitation has ended. They are commonly used as emergency signage in near ideal, isothermal indoor situations. Recently, their energy storage capacity was relied on for outdoor situations, e.g. for…
OBJECTIVE: Ferumoxytol is increasingly reported as an alternative to gadolinium-based contrast agents for MR angiography (MRA), particularly for patients with renal failure. This article summarizes more than 3 years of clinical experience with ferumoxytol-enhanced MRA for a range of indications and anatomic regions. C…
Self-assembly of block copolymers is a powerful motif for spontaneously forming well-defined nanostructures over macroscopic areas. Yet, the inherent energy minimization criteria of self-assembly give rise to a limited library of structures; diblock copolymers naturally form spheres on a cubic lattice, hexagonally pac…
Alkaline phosphatase (ALP)-catalyzed hydrogelation has been extensively explored and found wide applications. Spectroscopic and electrochemical approaches are commonly employed for the detection of ALP activity. Herein, by rational design of a fluorescence probe Fmoc-K(FITC)FFYp (P1) (where FITC is fluorescein), we in…
Metallic helical metamaterials give rise to broadband and scalable chiro‐optical effects orders of magnitude higher than found in nature. While arrays of gold helices have been suggested as compact circular polarizers, where a large difference of the diagonal elements of the Jones transmission matrix is desired, chira…
Two-dimensional stacks of dissimilar hexagonal monolayers exhibit unusual electronic, photonic and photovoltaic responses that arise from substantial interlayer excitations. Interband excitation phenomena in individual hexagonal monolayer occur in states at band edges (valleys) in the hexagonal momentum space; therefo…
Slip strengths of 〈a〉 basal, 〈a〉 prism, and 〈c+a〉 pyramidal systems in commercially pure zirconium have been determined using micro-cantilever testing. A range of single crystal cantilevers 0.5 μm to 10 μm wide, oriented for single slip were prepared using focused ion beam (FIB) machining and subsequently deflected us…
Nanofibrillar hydrogels are an important class of biomaterials with applications as catalytic scaffolds, artificial extracellular matrixes, coatings, and drug delivery materials. In the present work, we report the results of a comprehensive study of nanofibrillar hydrogels formed by cellulose nanocrystals (CNCs) in th…
The development and validation of crystal plasticity models requires the ability to map deformation at the microstructural scale. Here, a new method of high-resolution deformation mapping is used to measure strain, material rotation and lattice rotation in austenitic stainless steel at sub-micron resolution. Electron…
High-power Li-ion hybrid supercapacitors are fabricated with a sophisticated design in which both electrodes are based on ultrafine 3D structures. With a maximum exposure of the exterior surface to facilitate fast interfacial reaction and remedy kinetic imbalance, the hybrid devices demonstrate high energy–power integ…
leaf extract as a reducing agent at room temperature. The resulting Ag nanoparticles/PVA mixture was employed to create Ag nanoparticles/PVA (polyvinyl alcohol) hybrid nanofibers via an electrospinning technique. The obtained nanofibers were confirmed by means of UV-Vis spectroscopy, The X-ray diffraction (XRD), Fouri…
Nanomaterials continue to bring promising advances to science and technology. In concert have come calls for increased regulatory oversight to ensure their appropriate identification and evaluation, which has led to extensive discussions about nanomaterial definitions. Numerous nanomaterial definitions have been propo…
Two-dimensional materials such as graphene and transition metal dichalcogenides have attracted great attention because of their rich physics and potential applications in next-generation nanoelectronic devices. The family of two-dimensional materials was recently joined by atomically thin black phosphorus which posses…
This work addresses as well the adsorption of CO2 as and the interaction of H2/CO2 gas mixtures over singles nano-sized rhodium crystallitess. This system has been studied using field emission techniques including Field Ion Microscopy (FIM) and Field Emission Microscopy Microscopies (FEM). Both FEM and FIM methods are…
Abstrak Selama ini pemodelan arus bocor isolator diasumsikan berupa rangkaian yang terdiri dari resistansi linear dan kapasitansi. Beberapa penelitian menunjukkan bahwa arus bocor tidak selamanya berbentuk sinusoidal murni. Oleh sebab itu, diperlukan adanya model arus bocor isolator yang mampu menggambarkan peristiwa…
In this work we use regularized determinant approach to study the discrete spectrum generated by relatively compact non-self-adjoint perturbations of the magnetic Schr\odinger operator $(-i\nabla - \textbf{\textup{A}})^{2} - b$ in dimension $3$ with constant magnetic field of strength $b>0$. The situation near the Lan…
The system of external, sloping construction barriers protecting the bearing structure and the building’s interior from the influence of environment’s adverse weather conditions is one of the crucial elements of interior’s thermal and acoustic protection. The steep roof effectively protects the interior against rain,…
Hydrogels are crosslinked polymers which has the ability to absorb water in aqueous media.Hydrogels are being prepared by different methods such as suspension polymerization, chemical or physical crosslinking, solution polymerization, radiation polymerization etc., and using different types of polymers. Hydrogels exhi…