Materials Literature
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Despite the excellent work function adjustability of conjugated polyelectrolytes (CPEs), which induce a vacuum level shift via the formation of permanent dipoles at the CPE/metal electrode interface, the exact mechanism of electron injection through the CPE electron transport layer (ETL) remains unclear. In particular…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Xiangjun Liu, Gang Zhang, Qing-Xiang Pei, Yong-Wei Zhang; Phonon thermal conductivity of monolaye…
Among oxide catalysts, ceria is a technologically important material because of its wide applications as a promoter in three-way catalysts for the elimination of toxic exhaust gases, low-temperature water-gas-shift reaction, oxygen sensors, oxygen permeation membrane systems, and fuel cells. The catalytic activities o…
Doping of graphene via low energy ion implantation could open possibilities for fabrication of nanometer-scale patterned graphene-based devices as well as for graphene functionalization compatible with large-scale integrated semiconductor technology. Using advanced electron microscopy/spectroscopy methods, we show for…
The Mn atom, because of its special electronic configuration of 3d(5)4s(2), has been widely used as a dopant in various two-dimensional (2D) monolayers such as graphene, BN, silicene and transition metal dichalcogenides (TMDs). The distributions of doped Mn atoms in these systems are highly sensitive to the synthesis…
In this paper, we report on rf power induced change in the structural and optical properties of nickel oxide (NiO) thin films deposited onto glass substrates by rf magnetron sputtering technique. The crystallinity of the film was found to increase with increasing rf power and the deposited film belong to cubic phase.…
Step by step: A robust and rapid method for the layer-by-layer assembly of polymers and nanoparticles on strong and elastic aerogels has been developed. Thin films of biomolecules, conducting polymers, and carbon nanotubes were assembled, which resulted in aerogels with a number of functions, including a high charge-s…
Abstract Pt/CeO 2 catalysts with various Pt loadings were prepared by a conventional incipient wetness impregnation method that employed CeO 2 cubes (c‐CeO 2 ), rods (r‐CeO 2 ), and octahedra (o‐CeO 2 ) as the support and Pt(NH 3 ) 4 (NO 3 ) 2 as the metal precursor. Their structures and catalytic activities in CO oxi…
Subcentimeter single-crystalline graphene grains, with diameter up to 5.9 mm, have been successfully synthesized by tuning the nucleation density during atmospheric pressure chemical vapor deposition. Morphology studies show the existence of a single large nanoparticle (>~20 nm in diameter) at the geometric center of…
Ultra-thin copolymer films are deposited by initiated chemical deposition (iCVD) to investigate their performance under the condensation of water vapor. By forming a grafted interface between the coating and the substrate, the films exhibit stable dropwise condensation even when subjected to 100 °C steam. The applicab…
Superhydrophobic micro/nanostructured surfaces for dropwise condensation have recently received significant attention due to their potential to enhance heat transfer performance by shedding water droplets via coalescence-induced droplet jumping at length scales below the capillary length. However, achieving optimal su…
In response to the challenges of cancer chemotherapeutics, including poor physicochemical properties, low tumor targeting, insufficient tumor cell internalization/bioavailability, and side effects, we developed a unique tumor-targeted micellar drug-delivery platform. Using paclitaxel as a model therapeutic, a nanoprep…
Graphene has attracted increasing attention due to its unique electrical, optical, optoelectronic, and mechanical properties, which have opened up huge numbers of opportunities for applications. An overview of the recent research on graphene and its derivatives is presented, with a particular focus on synthesis, prope…
Two-dimensional (2D) polymers assemble organic subunits into covalently linked, high-aspect-ratio networks with long-range order. Despite recent advances in 2D polymerization, scalable and general methods to access few- and single-layer materials are limited. Here we exfoliate a hydrazone-linked covalent organic frame…
A facile and novel one‐step method of growing nickel‐cobalt layered double hydroxide (Ni‐Co LDH) hybrid films with ultrathin nanosheets and porous nanostructures on nickel foam is presented using cetyltrimethylammonium bromide as nanostructure growth assisting agent but without any adscititious alkali sources and oxid…
La literatura relacionada con hidrógeno en aceros contiene suficiente evidencia para invalidar el análisis de la permanencia en hidrógeno como un fenómeno simple de difusión. Una descripción más adecuada supone que los átomos de hidrógeno se mueven al azar de acuerdo con la primera ley de Fick pero que la red contiene…
Se precipitaron e identificaron carburos en una aleación Zr-2.5% Wt Nb. La precipitación se realizó a 555 °C (fundamentalmente fase a de (Zr, Nb)), y a 716 °C (campo bifásico a (Zr, Nb) + beta (Zr, Nb)), después de un tratamiento térmico a aproximadamente 1100°C (beta (Zr, Nb)), durante el cual el C había sido difundi…
En este trabajo se desarrolla una formulación multiescala aplicada a problemas de transferencia de calor que incluyen fuentes térmicas dependientes de la temperatura. La metodología se basa en el concepto de Volumen Representativo Elemental (RVE), dominio sobre el cual se modela una microestructura heterogénea. Median…
The goal of this work is to present a novel reduced-order model based on the Proper Orthogonal Decomposition (POD) and a reduced goal-oriented integration rule, applied to materials that exhibits a clear non-linear geometrical behavior, these two strategies work together in order to reduce considerably the computation…
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