Materials Literature
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Cellular MRI uses superparamagnetic iron oxide nanoparticles to label cells (in vitro or in vivo) for detection in magnetic resonance images. The infiltration of inflammatory macrophages can be visualized in brain diseases, such as multiple sclerosis, stroke and Alzheimer‘s disease, and correlates with disease severit…
Metal Enhanced Fluorescence (MEF), a phenomenon arising when a fluorophore is in closed proximity to a metallic structure such as metallic films or nanostructures, is seen as a way to increase the amount of reactive oxygen species produced by the irradiation of the protoporphyrin IX (PpIX), a photosensitizer commonly…
It is well established that ototoxic antibiotics and acoustic trauma can damage cochlear hair cells and cause hearing loss. Previous studies using transcanal LLLT (Low level laser therapy) showed that LLLT can promote recovery of hearing thresholds and cochlear hair cells. However, its mechanism has not been studied.…
Ultrasound-induced inertial cavitation is a mechanical process used for site-localized therapies such as non-invasive surgery. Initiating cavitation in tissue requires very high intensity focused ultrasound (HIFU) and low-frequencies. Hence, some applications like thrombolysis require targeted contrast agents to reduc…
Processes to achieve high spatial resolution ion implantation induced quantum well intermixing in GaAs/AlGaAs superlattices have been developed. Ion implantation has been carried out using various doses of 4 MeV As2+ ion beam, followed by rapid thermal annealing at various temperatures for 60 s. Low temperature photol…
Metal Enhanced Fluorescence (MEF) takes advantage of the coupling between surface plasmons, in either a metallic thin film or metallic nanoparticles, and fluorophores located in proximity of the metal, yielding an increase of the fluorophore emission. While MEF has been widely studied on metallic nanoparticles with th…
We report a method to fabricate SERS fiber probe by femtosecond laser micromachining on a microfiber tip. Multimode optical fibers are tapered to outer diameter of 4 to 20 μm. Femtosecond laser pulses are used to form nanostructures on the cleaved endface of the microfiber tip. This endface is then activated by silver…
Proper stewardship of our environment necessitates biodiversity preservation and the wise use of resources. Species that may be pests, such as some algae, may also be used innovatively to mitigate their ecological impact. In this study, we extracted polysaccharide mixtures from three algae-Undaria, Laminaria, and Ulva…
Due to its unique zero-bandgap structure, linear disperion of electrons and compatibility with various optoelec- tronic platforms, graphene has become one of the principal materials of interest with strong development for many nonlinear optical devices. Functionalized graphene-composites exhibit excellent optical limi…
The incorporation of CdO and CuO in the crystal structure of calcium silicate hydrates (C–S–H) during hydrothermal treatment at 200°C was examined. The synthesis of C–S–H was carried out in unstirred suspensions for 4, 8, 12, 16, 24, 48 and 72 h at 200°C. The molar ratios of the primary mixture were CaO/(SiO2+X) = 0·5…
Enzyme-assisted 3D lithography: A peptide substrate for transglutaminase factor XIII (FXIIIa) can be caged with a photo-deprotectable group and immobilized to the hydrogel framework. The substrate can be decaged by using multiphoton light to anchor cell-signaling motifs in a spatial specific manner.
The inhibition efficiency of polyvinylalcohol (PVA) in controlling corrosion of aluminium in well water in the absence and presence of Zn2+ has beenevaluated by weight loss method. The formulation consisting of 250 ppm of PVA and 25 ppm of Zn2+ offers 85 % inhibition efficiency. It is found that the inhibition efficie…
Bacterial and cancer cells that are resistant to current specific therapy have become an increasingly important public health problem over the past several decades. Consequently, the search for new anti-infection and anti-cancer treatments of drug resistant microbes has attracted a lot of attention. Recently, nanostru…
The surface chemical states of RF-magnetron sputtered Ba0.5Sr0.5TiO3 (BST5) thin films deposited at different oxygen mixing percentage (OMP) was examined by x-ray photoelectron spectroscopy. The O1s XPS spectra indicate the existence of three kinds of oxygen species (dissociated oxygen ion O2 −, adsorbed oxide ion O−…
Poly(urethane-imide)s were prepared using a new method based on Michael addition and elimination reactions of bis(nitroethyl)urethane oligomers (PUNO2) with bismaleimides. The bis(nitroethyl)urethane oligomers were synthesized from poly(tetramethylene oxide) glycol of molecular weight 650, 1000, 1500 and 2000 (Teratha…
The influence of crystallization reaction time on CaCO3 microparticle growth from supersaturate aqueous solutions, in the presence of a conjugate drug-copolymer, has been investigated. The polymer conjugate, P(NVP-MA-Ox), is based on poly(N-vinylpyrrolidone-co-maleic anhydride) as the support and 2-amino-5-(4-methoxyp…
X-ray powder diffraction data, unit-cell parameters, and space group for loratadine (C 22 H 23 ClN 2 O 2 ) are reported [ a = 28.302(18) Å, b = 4.996(3) Å, c = 29.154(19) Å, β = 109.158(2)°, unit-cell volume V = 3894.25 Å 3 , Z = 8, and space group C 2/ c ]. All measured lines were indexed and are consistent with the…
A sleeve and its matched spindle are key components of a cotton picker, whose performances affect picking cotton efficiency directly. To enhance the sleeve strength and wear resistance, it is desired to add coatings on the inner surface of the sleeve. In this paper, influences of the coatings on the mechanical perform…
Abstract The surface dielectric properties of acid‐etched low‐density polyethylene (LDPE) were analysed in the frequency range from 20 Hz to 200 kHz. Samples were treated with various acids for a period of one hour, at temperatures ranging from 20 to 70 °C. After the treatment, the samples were analysed with Fourier t…
A novel water-soluble intrinsically conducting polymer was prepared. Sol-gel-reaction of tetraethoxysilane was carried out in the presence of the self-doped polymer to obtain organic/inorganic hybrid conducting material. Incorporation of electrically conducting polymer into silica is considered to be an effective meth…