Materials Literature
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The heat transfer coefficients of several individual single-walled carbon nanotubes (SWCNTs) were measured using a micro-Raman spectroscopy technique in an atmosphere environment. A 514 nm laser was focused in the middle of a suspended SWCNT and the local temperature rise was measured by monitoring the downshifts of t…
Conducting polymer composites have many interesting physical properties and important application potentials. Suitable combinations of metal nanoparticles with conductive polymers can result in composite materials having unique physical and chemical properties that can have wide application potential in diverse areas.…
Hydrophobic macromolecular contrast agents (MMCAs) are highly desirable to provide safe and efficient magnetic resonance (MR) visibility to implantable medical devices. In this study, we report on the synthesis and evaluation of novel biodegradable poly(ε-caprolactone)-based MMCAs. Poly(α-propargyl-ε-caprolactone-co-ε…
Ferroelectrets in the form of electrically charged micro-porous foams exhibit a very large longitudinal piezoelectric coefficient d33. The structure has hence received wide application interests as sensors particularly in acoustic devices. During charging process, electrical breakdown (Paschen breakdown) takes place i…
The corrosion inhibition of mild steel in hydrochloric acid solution in the presence of three different molecular weights of polyvinyl alcohol (PVA) designated as PVA-I, PVA-II, and PVA-III corresponding to 14,000, 72,000, and 125,000 g mol−1, respectively, was investigated using electrochemical impedance spectroscopy…
Various ratios (30/70%, 70/30%, 50/50% with and without nanosilver) of chitosan (CS; 60–120.000 g/mol) and polyethylene oxide (PEO; 600.000 g/mol) blended nanofibers in the nanofibrous scaffolds were obtained by using electrospinning at ambient atmosphere. Homogenous CS solutions were prepared in 90% aqeous acetic aci…
This paper describes the investigation and development of a novel magnetic drug delivery nanosystem (labeled as MO-20) for cancer therapy. The drug employed was oncocalyxone A (onco A), which was isolated from Auxemma oncocalyx, an endemic Brazilian plant. It has a series of pharmacological properties: antioxidant, cy…
Temperature-responsive polymers with a lower critical solution temperature (LCST) have attracted much attention in biomedical and biotechnological fields. It is important to tune their cloud point temperature (Tc) in a broad temperature range as desired by the applications. In this study, new thermo-responsive 2-hydro…
A new approach to prepare α-FeOOH/reduced graphene oxide (RGO) at room temperature has been developed. Instead of reducing graphene oxide (GO) with the most commonly used reagents, which are highly toxic or explosive, Fe²⁺ was used as the reducing reagent. Fe²⁺ efficiently reduced GO under mild conditions to form α-Fe…
Ready to load: A shear stress regulated assembly route has been used to fabricate silica nanotubes and hollow mesostructures thereof. The packed silica nanotubes were employed as support for loading gold nanoparticles for efficiently catalyzing the epoxidation of styrene with high conversion and selectivity towards st…
We report femtosecond stimulated Raman spectroscopy measurements of lattice dynamics in semiconductor nanocrystals and characterize longitudinal optical (LO) phonon production during confinement-enhanced, ultrafast intraband relaxation. Stimulated Raman signals from unexcited CdSe nanocrystals produce a spectral shape…
Following technological advancements, there is a growing population of cellular phone and computer users. However, these electronic instruments cause electromagnetic waves, negatively influencing users’ health or precision instruments’ malfunction. Therefore, shielding electromagnetic wave becomes an important matter.…
We have observed that the vapor-phase deposition of polymers onto liquid substrates can result in the formation of polymer films or particles at the liquid-vapor interface. In this study, we demonstrate the relationship between the polymer morphology at the liquid-vapor interface and the surface tension interaction be…
Verschiedene Formen: Das Wachstum des SiO2-Kerns binärer Tetrapoden, Hexapoden und Dodecapoden führt zu tetra-, hexa- bzw. dodecavalenten SiO2-Partikeln. Die Oberfläche der multivalenten Partikel kann regioselektiv funktionalisiert werden, wobei Partikel mit anisotroper Geometrie und Reaktivität erhalten werden.
In this paper, we proposed a novel optical film 'Collimation Film with Equivalent Focal Reflective Aperture' (CFEFRA) that can collocate with the proper light guide plate (LGP) to provide a highly collimated planar light source (HCPLS) that not only has high intensity peak but also good uniformity. The CFEFRA has micr…
Most of the time, the hydrodynamics effects in plasma modelling, used to describe CVD diamond deposition processes operating at a moderate pressure and gas flow (assisted by microwave plasma or by a hot filament), are neglected. As a matter of fact, the transport of the reactive species in such reactors is mainly cont…
The influences of alkoxy group number and loading method of silane coupling agents on the mechanical properties of a styrene-butadiene rubber/silica composite were investigated. Mercapto functional silane coupling agents with dialkoxy and trialkoxy structures were used. The pre-treatment method and the integral blend…
A 3,6,9,12,15,18,21-heptaoxatricosane-1,23-diyl bis(4-((4-(dimethylamino)benzylidene)amino)benzoate) was synthesized and characterized by spectroscopy analysis. The corrosion inhibition effect of the synthesized compound on carbon steel in hydrochloric acid solution had been investigated using potentiodynamic polariza…
This paper investigates the effects of boron and calcium co-doping on the measured energy resolution of Gd3Ga3Al2O12:Ce (GGAG: Ce). For this study, three samples of GAGG were grown using the Czochralski method. The first sample was doped with Ce3+and was used as a reference for comparison. The next two samples were ad…
We synthesized the Eu3+ activated SrWO4 nanocrystalline microspheres by a simple and facile synthesis route. X-ray diffraction patterns exhibited a unique phase of SrWO4:Eu3+ scheelite structure with an average crystallite size of 58.9 nm. Fourier transform infrared spectra revealed the presence of absorption bands of…