Materials Literature
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Fe$_{3}$Si/Ge(Fe,Si)/Fe$_{3}$Si thin film stacks were grown by a combination of molecular beam epitaxy and solid phase epitaxy (Ge on Fe$_{3}$Si). The stacks were analyzed using electron microscopy, electron diffraction, and synchrotron X-ray diffraction. The Ge(Fe,Si) films crystallize in the well oriented, layered t…
Germanium single crystal having 45 mm diameter and 100 mm length of 7N+ purity has been grown by Czochralski method. Structural quality of the crystal has been characterized by Laue diffraction. Electrical conduction and Hall measurements are carried out on samples retrieved from different parts of the crystal along t…
Abstract Nanoparticles are increasingly being used as advantageous alternatives to commonly used contrast agents in bioimaging, not only due to their improved imaging capabilities but also their great potential in theranostics. Herein, carbon quantum dots (CQDs) codoped with nitrogen and lanthanides (i.e., Gd and Yb)…
Abstract Flexible planar micro‐supercapacitors (MSCs) with unique loose and porous nanofiber‐like electrode structures are fabricated by combining electrochemical deposition with inkjet printing. Benefiting from the resulting porous nanofiber‐like structures, the areal capacitance of the inkjet‐printed flexible planar…
Two-dimensional materials have been extensively studied over the last two decades as they represent a class of materials with properties applicable in catalysis, sensing, optical devices, nanoelectronics, supercapacitors, and semiconductors. The properties of 2D materials can be tuned by exfoliation into mono- or few-…
Mesoporous silica nanoparticles (MSNs) have been widely investigated as a nanocarrier for the delivery of various cargoes in nanomedicine. The application of MSNs in tissue engineering is a relatively newly emerged field that has gained much research interest. In this review, the recent advances in the tissue-engineer…
In the present work, we report the antioxidant, antimicrobial and cytotoxic activities of quercetin-capped gold nanoparticles (AuNPsQct). The synthesis of AuNPsQct was confirmed by UV–Vis spectroscopy, FTIR and transmission electron microscopy (TEM) analyses. The FTIR spectrum showed the integrity of the quercetin mol…
Abstract Understanding the relation between the time-dependent resistance drift in the amorphous state of phase-change materials and the localised states in the band gap of the glass is crucial for the development of memory devices with increased storage density. Here a machine-learned interatomic potential is utilise…
Conductive metal–organic frameworks (c-MOFs) show great potential in electrochemical energy storage thanks to their high electrical conductivity and highly accessible surface areas. However, there are significant challenges in processing c-MOFs for practical applications. Here, we report on the fabrication of c-MOF na…
Abstract MXenes have shown promise in myriad applications, such as energy storage, catalysis, EMI shielding, among many others. However, MXene oxidation in aqueous colloidal suspensions when stored in water at ambient conditions remains a challenge. It is now shown that by simply capping the edges of individual MXene…
We present a global optimizer, based on a conditional generative neural network, which can output ensembles of highly efficient topology-optimized metasurfaces operating across a range of parameters. A key feature of the network is that it initially generates a distribution of devices that broadly samples the design s…
Abstract Invited for the cover of this issue is the group of Sophie Laurent from the University of Mons, Belgium. The cover image shows a blood vessel containing the bimodal probe reported in this paper.
Reversible Solid Oxide Cells (SOC) are quite susceptible to variations in operating parameters, and especially the switching of operating modes is not yet well understood. Effects like thermal stress from changes in the current density pattern, as well as carbon deposition and nickel oxidation can destroy SOC. Thus, i…
Solid oxide fuel cell (SOFC) is a promising electrochemical energy conversion device that can directly produce electricity from chemical fuels. On the other hand, in the Ni-zirconia cermet currently used for the SOFC anode, the electron conducting pathways through the Ni metal phase can be easily destroyed by redox pr…
This study proposes the use of all-ceramic modified four-point bending specimens consisting of a thin porous electrode layer sandwiched between two dense electrolyte beams to determine the fracture energy of the electrolyte/electrode interface. The sandwich arrangement was effective to prevent the premature vertical c…
Operando methods, including thermal imaging, infrared emission and Raman spectroscopy, are combined with simultaneous electrochemical measurements to characterize carbon removal and partial oxidation of methane on Ni/YSZ anodes of operating solid oxide fuel cells (SOFCs). Results for carbon removal indicate that the C…
Detailed chemical information from electrode surfaces at operating conditions is essential for rational development of solid oxide cell (SOC) electrodes but so far, because of harsh operating conditions very little is known about mechanistic aspects of surface reactions as well as surface thermodynamics at SOC electro…
Metal oxide addition is one of the major techniques to improve the performance of SOFC cermet anodes. However, the effects of the metal oxide addition on hydrogen oxidation activity of the anodes have not been clarified so far. In this study, Ni-CaO/YSZ anodes were prepared to examine the interaction between YSZ and C…
This paper reports a stability test comparison between ammonia- and syngas-fueled anode-supported cells (ASC). The planar (50 x 50 mm 2 ) ASC is consisted of 400-mm-Ni-YSZ anode, 3-mm-YSZ electrolyte, and 12-mm-LSC-GDC cathode together with metallic frames and current collectors which are sandwiched by a pair of rib-c…
An improvement of efficiency is one of the important technological issues to realize the distribution of SOFC technology. The NEDO has initiated the project on high efficiency and toughness of SOFC cell-stacks from 2018 to 2019. The target of this project is (1) making a concept for high-efficient SOFC cell-stacks ove…