Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Topological insulators are a novel class of quantum materials in which time-reversal symmetry, relativistic (spin-orbit) effects and an inverted band structure result in electronic metallic states on the surfaces of bulk crystals. These helical states exhibit a Dirac-like energy dispersion across the bulk bandgap, and…
Abstract magnified image A brief review on beta gallium oxide (β‐Ga 2 O 3 ) nanowires (NWs) and nanostructures (NS) is presented in this article. β‐Ga 2 O 3 is a wide‐bandgap ( E g ∼ 4.9 eV) semiconductor and can be doped with n‐ and p‐type dopants, which can lead to applications in many functional devices. Here, we w…
In solid-state semiconductor-sensitized solar cells, commonly known as extremely thin absorber (ETA) or solid-state quantum-dot-sensitized solar cells (QDSCs), transfer of photogenerated holes from the absorber species to the p-type hole conductor plays a critical role in the charge separation process. Using Sb2S3 (ab…
Hydrophilic functional semiconductor nanocrystals that are also compact provide greatly promising platforms for use in bioinspired applications and are thus highly needed. To address this, we designed a set of metal coordinating ligands where we combined two lipoic acid groups, bis(LA)-ZW, (as a multicoordinating anch…
The thinner the better: SnO2 sheets that are five atomic layers thick are an efficient catalyst for the oxidation of CO. These sheets, which have 40% surface atom occupancy and are fabricated by a scalable ethylenediamine-assisted pathway, show remarkably improved catalytic performances compared to other SnO2 species,…
There has been an emerging interest in stretchable power sources compatible with flexible/wearable electronics. Such power sources must be able to withstand large mechanical strains and still maintain function. Here we report a highly stretchable H3PO4-poly(vinyl alcohol) (PVA) polymer electrolyte obtained by optimizi…
Semiconductor nanoparticles (or quantum dots, QDs) exhibit unique optical and electronic properties such as size-controlled fluorescence, high quantum yields, and stability against photobleaching. These properties allow QDs to be used as optical labels for multiplexed imaging and in drug delivery detection systems. Lu…
We report a highly versatile and one-pot microwave route to the mass production of three-dimensional graphene-carbon nanotube-iron oxide nanostructures for the efficient removal of arsenic from contaminated water. The unique three-dimensional nanostructure shows that carbon nanotubes are vertically standing on graphen…
Conductive, flexible, and durable reduced RGO textiles with a facile preparation method are presented. BSA proteins serve as universal adhesives for improving the adsorption of GO onto any textile, irrespective of the materials and the surface conditions. Using this method, we successfully prepared various RGO textile…
A self-healing thermo-reversible elastomer is synthesized by cross-linking a hydrogen bonding polymer network with chemically-modified graphene oxide. This nanocomposite allows for both rapid and efficient self-healing (in only several minutes) at room temperature, without the need for any external stimuli (e.g., heat…
Solid oxide fuel cells (SOFC) are the cleanest, most efficient, and cost-effective option for direct conversion to electricity of a wide variety of fuels. While significant progress has been made in anode materials with enhanced tolerance to coking and contaminant poisoning, cathodic polarization still contributes con…
A new type of core-shell upconversion nanoparticles which can be effectively excited at 795 nm has been designed and synthesized through spatially confined doping of neodymium (Nd(3+)) ions. The use of Nd(3+) ions as sensitizers facilitates the energy transfer and photon upconversion of a series of lanthanide activato…
As argilas bentoníticas se constituem um insumo imprescindível a elaboração de fluidos de perfuração. Novos depósitos foram encontrados nos Municípios de Cubati, Pedra Lavrada e Sossego, PB, fato que pode representar uma interessante alternativa tecnológica a futura escassez das argilas bentoníticas de Boa Vista, PB,…
O estado da Paraíba e o maior produtor nacional de argilas bentoniticas do país. Atualmente, as variedades mais nobres de argilas bentoniticas produzidas no Brasil, principalmente no município de Boa Vista, PB, estão se exaurindo devido aos anos de exploração desordenadas. Por outro lado, recentemente, foram descobert…
The observation of non-bulk superconductivity with an unexpectedly high onset transition temperature Tc up to ~ 49 K in non-superconducting single crystalline CaFe2As2 upon rare-earth doping has raised interesting questions concerning its origin. Several possibilities including interfacial mechanism have been proposed…
We formulate a relaxed linear elastic micromorphic continuum model with symmetric Cauchy force-stresses and curvature contribution depending only on the micro-dislocation tensor. Our relaxed model is still able to fully describe rotation of the microstructure and to predict non-polar size-effects. It is intended for t…
References .............................................................................................................. 105 external environment; therefore, the macroscopic properties of dendrimers can be tuned by the nature of peripheral functionalities.11-13 During the past decade, a great number of dendrimer stru…
Chemotherapy is the clinical treatment of disease with chemical drugs, and has been researched and performed over several hundreds of years. Compared to surgery, it is regarded as noninvasive, relatively cheaper, easy for public assessment, and less dangerous. However, there are also some risks and side effects when d…
Fabrication of advanced nanomaterials with multiple components, complex structure, and integrated functionality has become a trend in materials design for nanotechnology. The use of biological materials is advantageous over traditional top-down processing to produce these advanced nanomaterials in terms of exquisite s…
This chapter contains sections titled: Preliminaries Cell Models Hole Models Significant Liquid Structures Scaled-Particle Theory