Materials Literature
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Herein, the hydrothermal stability of amorphous silica-alumina (ASA) is investigated under conditions relevant for the catalytic conversion of biomass, namely in liquid water at 200 °C. The hydrothermal stability of ASA is much higher than that of pure silica or alumina. Interestingly, the synthetic procedure used pla…
The interfacial polymer‐nanosheet behavior is investigated to fully understand the interfacial interaction mechanism. The emphasis is placed on the discussion whether a “polymer glassy layer” in the proximity of the nanosheet exists or not. Results indicate that a “polymer glassy layer” actually exists near the nanosh…
A novel biocompatible polymer is developed for antimicrobial and nonstick coatings of wound dressing. The polymer is formed by copolymerization of carboxybetaine ester analogue methacrylate (CB-ester) and small partial poly(ethylene glycol) methacrylate (PEGMA) for cross-linking by hexamethylene diisocyanate (HDI), wh…
There is a growing requirement for piezoelectric materials and systems which can operate in extreme environments, for example, oil & gas, and aerospace. Here, we present the high temperature BiFeO3-K0.5Bi0.5TiO3-PbTiO3 (BF-KBT-PT) polycrystalline perovskite system. X-ray diffraction, impedance analysis, and Berlincour…
The missing link: Studies on the biosynthesis of riboflavin have failed to characterise dephosphorylation of the intermediate 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione 5'-phosphate. We show that this reaction can be catalysed in Escherichia coli by YigB and YbjI and in plant chloroplasts by AtcpFHy1, which are…
An account is presented of the history of the controversy between supporters of the crystallite and random network theories, which dominated the structural theories of network glasses for approximately 50 years, and is very poorly, if not inaccurately, covered in many textbooks. The development of the various theories…
Sirolimus has recently been introduced as a therapeutic agent for breast and prostate cancer. In the current study, conventional and Stealth liposomes were used as carriers for the encapsulation of sirolimus. The physicochemical characteristics of the sirolimus liposome nanoparticles were investigated including the pa…
1,7‐Octadiene (OD) was plasma polymerised onto silicon wafers and glass slides under a broad range of input specific energies and deposition times to study the hydrophobicity of deposited films. Deposition of plasma polymerised 1,7‐octadiene (ppOD) film resulted in decrease of glass slide surface free energy (SFE) fro…
Ag nanostructures with surface-enhanced Raman scattering (SERS) activities have been fabricated by applying laser-direct writing (LDW) technique on silver oxide (AgOx) thin films. By controlling the laser powers, multi-level Raman imaging of organic molecules adsorbed on the nanostructures has been observed. This phen…
Mesoporous titanium-silicates have been prepared following the evaporation-induced self-assembly (EISA) methodology and characterized by elemental analysis, XRD, N2 adsorption, SEM, DRS UV–Vis and Raman techniques. The use of acetylacetone during synthesis allowed the formation of highly dispersed dimeric and/or small…
Novel amphiphilic molecules composed of naphthylacryl and L-glutamide moieties (1-NA and 2-NA) have been designed and their organogel formation in various organic solvents as well as their self-assembled nanostructures have been investigated. Both compounds formed organogels in many organic solvents, ranging from nonp…
High‐purity ternary laminated compound Ti 3 SiC 2 was successfully synthesized by a microwave heating method in the flowing argon for the first time. The mixtures of titanium, silicon, and graphitic carbon (C gc ) or activated carbon (C ac ) with different molar ratios were used to investigate the reaction mechanisms.…
Using ab initio molecular dynamics simulations, we perform a comparative study of the defect accumulation process in silicon carbide (SiC) and zirconium carbide (ZrC). Interestingly, we find that the fcc Si sublattice in SiC spontaneously and gradually collapses following the continuous introduction of C Frenkel pairs…
PURPOSE: To develop a noninvasive MRI method for determining the germination and infection of tumor-homing bacteria in bacteriolytic cancer therapy using endogenous CEST contrast. METHODS: The CEST parameters of the anaerobic gram-positive bacterium Clostridium novyi-NT (C. novyi-NT) were first characterized in vitro,…
PURPOSE OF REVIEW: To summarize the most recent preclinical and clinical advancements in therapeutic nano-oncology. RECENT FINDINGS: First-generation nanotherapies are well tolerated in humans and evidence shows that they are efficacious, while at the same time reducing the burden of side-effects. Most of these therap…
Embedding a thermoelectric generator (TEG) in a biological body is a promising way to supply electronic power in the long term for an implantable medical device (IMD). It can resolve the service life mismatch between the IMD and its battery. This paper is dedicated to developing a real prototype, which consists of an…
A confined colloidal glass, under the imposition of a uniform shear stress, is investigated using numerical simulations. Both at macro- and microscales, the consequent dynamics during the onset of flow is studied. When the imposed stress is gradually decreased, the time scale for the onset of steady flow diverges, ass…
Integration of metamaterials onto a flexible substrate can provide many advantages such as transparency, deformability, light weight and biocompatibility. Here we demonstrate a simple and convenient nickel sacrificial layer-assisted transfer method to fabricate visible-near infrared (IR) metamaterials embedded into a…
Surfaces of carbon steel (CS) exposed to mixed cultures of iron-oxidizing bacteria (FeOB) and dissimilatory iron-reducing bacteria (FeRB) in seawater media under aerobic conditions were rougher than surfaces of CS exposed to pure cultures of either type of microorganism. The roughened surface, demonstrated by profilom…
High Resolution Image Download MS PowerPoint Slide Elastic and anelastic properties of a member of the BiFeO 3 –CaFeO 2.5 perovskite solid solution (BCFO), which is known to have multiple instabilities, have been investigated by resonant ultrasound spectroscopy. This phase, with 64% Bi and 36% Ca on the A site, is ant…