Materials Literature
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Probes for detecting highly reactive oxygen species (hROS) are critical to both understanding the etiology of the disease and optimizing therapeutic interventions. However, problems such as low stability due to autoxidation and photobleaching and unsuitability for biological application in vitro and in vivo, as well a…
We compute the zero-point renormalization (ZPR) of the optical band gap of diamond from many-body perturbation theory using the perturbative ${G}_{0}{W}_{0}$ approximation as well as quasiparticle self-consistent $GW$. The electron-phonon coupling energies are found to be more than 40% higher than standard density fun…
Upconversion nanoparticles (UCNPs) have shown considerable promises in many fields; however, their low upconversion efficiency is still the most serious limitation of their applications. Herein, we report for first time that the homogeneous doping approach based on the successive layer-by-layer method can greatly impr…
A method to reduce the surface roughness of a spray-casted polyurethane/silica/fluoroacrylic superhydrophobic nanocomposite coating was demonstrated. By changing the main slurry carrier fluid, fluoropolymer medium, surface pretreatment, and spray parameters, we achieved arithmetic surface roughness values of 8.7, 2.7,…
We report a simple and rapid method for fabricating a surface-enhanced Raman scattering (SERS) substrate, which offers good flexibility, excellent optical transparency, and high SERS activity. Specifically, the SERS substrate (AuNPs/PMMA film) was obtained through self-assembly of gold nanoparticles (AuNPs) on newborn…
A three-dimensional hierarchical graphene/polypyrrole aerogel (GPA) has been fabricated using graphene oxide (GO) and already synthesized one-dimensional hollow polypyrrole nanotubes (PNTs) as the feedstock. The amphiphilic GO is helpful in effectively promoting the dispersion of well-defined PNTs to result in a stabl…
We measure the optical-absorption spectra and optical conductivities of excitons and trions in monolayers of metal dichalcogenide MoS${}_{2}$ and compare the results with theoretical models. Our results show that the Wannier-Mott model for excitons with modifications to account for small exciton radii and large excito…
INTRODUCTION: Bearing in mind that many promising drug candidates have the problem of reaching their target site, the concept of advanced drug delivery can play a significant complementary role in shaping modern medicine. Among other nanoscale drug carriers, superparamagnetic iron oxide nanoparticles (SPIONs) have sho…
The Paton Welding Journal, 2014, №05. International Scientific-Technical and Production Journal «The Paton Welding Journal» «The Paton Welding Journal» has been published monthly since 2000 in English, ISSN 0957-798X. «The Paton Welding Journal» is a cover-to-cover English translation of the «Avtomaticheskaya Svarka»…
FeAl 3 and FeAl 2 intermetallic alloys composition was produced by conventional casting technique. Typically these intermetallic alloys are susceptible to hydrogen environment embrittlement. In this process, water vapor in the air induced cleavage fracture of intermetallic alloys. In order to take advantage of this ph…
Scheelite type BaMoO 4 nanorods have been synthesised by modified acrylamide assisted sol–gel process. The prepared samples were characterised by X-ray diffraction (XRD), Fourier transform infrared (FTIR), Fourier transform Raman (FT-Raman), scanning electron microscope–energy dispersive X-ray (SEM–EDX) and transmissi…
A set of adsorbents belonging to a class of amorphous, nanoporous materials composed of spherosilicate building blocks, containing isolated titanium metal sites, was investigated for their ability to separate equimolar binary gas mixtures of CH 4 /H 2, CO 2 /H 2, and CO 2 /CH 4 . The cubic silicate building blocks (sp…
Owing to the individuality of intermetallic compounds, they are regarded as a special class of materials. As such, there is a need to develop a step-by-step methodology for solution of their structure. The current paper adapts the methodology of structure solution from precession electron diffraction (PED) zonal data…
We present experimental evidence for differences in surface energy losses between (a) electrons entering a solid from vacuum and (b) electrons leaving the solid into vacuum. Although these so-called in-out asymmetries have been long assumed to exist on theoretical grounds, the present work constitutes a clear experime…
Abstract Herein, we report three different hyper‐cross‐linked polymers (HCPs), which were synthesised by means of copper‐catalysed Huisgen 1,3‐dipolar cycloaddition (CuAAC). These polymers represent novel porous networks as these are the first examples of frameworks based on a rigid pseudo‐octahedral monomer ( para ‐s…
We propose a method of positioning a colloidal quantum dot (QD) using a nanohole on a Si substrate processed by oxidation with scanning probe microscope (SPM). We investigated two methods for the formation of the nanohole. Using oxide as a positive mask, we found that the hole of QD diameter and depth was not possible…
We demonstrate how to prepare extraordinarily deformable, gas-filled, spherical capsules from nonmodified cellulose. These capsules have a low nominal density, ranging from 7.6 to 14.2 kg/m(3), and can be deformed elastically to 70% deformation at 50% relative humidity. No compressive strain-at-break could be detected…
Two kinds of different size distribution calcium carbonate (CaCO 3 ) particles were blended and filled into ultra‐high molecular weight polyethylene (UHMWPE). The torque of UHMWPE/CaCO 3 samples was measured with Haake torque rheometer. The results showed that the process torque of UHMWPE/CaCO 3 samples was decreased…
Plasmonic nanostructures hold immense potential for structure-based color engineering at the subwavelength length scale. In this paper, we will review representative works that demonstrate promising strategies to exploit the rich mechanisms of surface plasmons for color engineering across the visible spectrum. By vary…
A bottom up approach is employed in the design of novel materials: first, gas-phase “double bubble” clusters are constructed from high symmetry, Th, 24 and 96 atom, single bubbles of ZnO and GaN. These are used to construct bulk frameworks. Upon geometry optimization—minimisation of energies and forces computed using…