Advanced Materials Research Vol. 643

Abstract: As a new intelligent material, Nano-Magnetorheological Material (Nano-MRM) gets a wide range of great concern to researchers and its application scope is very broad. For diagnosis and treatment cancer in one of the most difficult types of intracranial aneurysm, the work established the most practical model on Nano-MRM in intracranial aneurysm therapy research and analyzed quantitatively. The results are effective. Hope the work can be a strong impetus to human progress in the anti-cancer project.

Abstract: In this paper, nano-TiO2 particles with an average size of smaller than 25 nm, were stable dispersion to water-based hot rolling liquid for steel strip under the effects of dispersant and ultrasonic. The stability of the rolling liquid with nano-TiO2 was characterized by sedimentation method. The tribological properties of the hot-rolling liquid doped with nano-TiO2 were evaluated by using a universal friction and wear tester. Besides, the lubricity of the water-based hot rolling liquid doped with nano-TiO2 for steel strip was evaluated on a hot-rolling tester by using the rolling liquid without nano-TiO2 for comparison. Results indicate that TiO2 Nano-particles as additive are stable dispersion to hot-rolling liquid with appropriate dispersant and process for more than 7 days, also have good friction-reducing, anti-wear, and cooling properties.

Abstract: Tissue defects and organ failure have seriously threatened the health and life of human beings and are challenges in modern medicine we have been trying to overcome. They are often treated with tissue and organ transplantation. Although autologous tissue transplantation is not bothered by immune rejection, it could cause defects of the donor site and create new pains. Therefore, scientists are striving to explore more ideal principles and methods while working hard to improve the existing treatments as most as possible. The rise and development of tissue engineering will be possible to provide adequate safe “autologous” tissues and organs to repair human body. Cartilage damage is one of the main causes of osteoarthritis. However, it has limited self-repair ability. Thus, cartilage tissue engineering, especially nanomaterials as a new treatment modality provides a therapeutic potential.

Abstract: External micro vibration is an important obstacle factor for the measuring result of scanning tunneling microscopy. In order to achieve better result, the influence of vibration must be eliminated. In this study, a large range new sensor with two nano stages is built up to detect the micro vibration for the compensation of the results. Finnaly, the vibration detection experiments are made to illustrate the rationality of the sensor.

Abstract: The synthesis of a mannose-bearing disaccharide containing a thiol spacer at the reducing end was carried out to provide a tethered sugar suitable for attaching to gold nanoparticles. Such sugar is designed to mimic carbohydrates involved in cell-surface interactions. The molecule was constructed via Schmidt glycosylation of an appropriately protected glycosyl donor and an acceptor, followed by removal of protective groups and reductive amination to introduce a protected thiol spacer at the reducing end of the glycan. Subsequent removal of the thiol protective group gave the target disaccharide in a satisfactory yield.

Abstract: We have studied the approach for dynamic micromagnetic equilibrium conditions (Brown’s equations) in terms of nucleation theory provide micromagnetic solutions for linearized forms of the equilibrium equations. We focus on the case of ferromagnetic resonance here described for a ferromagnetic sphere with uniform magnetization and with no losses. With the linear approximation we have derived uniform and symmetric resonance mode to the micromagnetic equations describing the dynamic properties of the near single-domain states by ignoring the magnetostatic potential gradient in symmetric case. Moreover, using numerical integration solution to calculate exchange and magnetic energy, both resonance modes are proved to be effective approximate solution of Brown’s equations in the nanometer range.

Abstract: We report on the utilization of Pd-Pt nanodendrites (Pd-Pt NDs) to create a highly responsive glucose biosensor. Glucose oxidase was simply mixed with Pd-Pt NDs and cross-linked on the Pt electrode with chitosan (CHIT) medium by glutaraldehyde. The biosensor showed low linear detection limit (0.6 μM), wide linear detection range (0.001-5 mM). The excellent performance of the biosensor is attributed to relatively large surface areas and particularly catalytic active of Pd-Pt NDs, and good biocompatibility of CHIT, which enhances the enzyme absorption and promotes electron transfer between redox enzymes and the surface of electrodes. This composite film can be easily extended to immobilize other biomolecules.

Abstract: A heat sensitive color-developing nanocapsule as leucocompound delivery carrier was prepared by emulsion polymerization. The nanocapsules were characterized by Malvern particle size analysis, scanning electron microscopy (SEM) and UV/visible spectrophotometer. The heat sensitive color-developing curves of absorbency at different temperature were investigated. The effects of core/wall mass ratio on the heat sensitive color-developing properties of nanocapsules were discussed in detail. The particle size analysis demonstrates that the particle sizes mostly concentrate between 124 nm and 312 nm. SEM result shows that the nanocapsules have smooth surface. The resultant nanocapsules have the highest heat sensitive color-developing absorbency with the the core/wall mass ratio being 1:8.

Abstract: This paper explores the sol-gel titanium dioxide the conditions of experiments to determine the best conditions. The photodegradation capability of alizarin red has been enhanced by using immobilized TiO2 particles, where the titanium sol synthesized by a sol-gel method was used as the binder for the immobilization. Optimal conditions of TiO2 film, alizarin red concentration, solution pH, and UV irradiation intensity have been found to enhance the photodegradation efficiency.

Abstract: In this paper, titanium tetrachloride with inorganic salts as raw materials in the experiment, TiO₂ is prepared by the hydrolyzation method in (NH₄)₂SO₄-modified TiCl₄ solution, the maximal photocatalytic activity is observed at the mole ratio of TiCl₄: (NH₄)₂SO₄=1:2, the water-bath temperature of 90°C. The photocatalytic degradation efficiency is influenced by the initial cresol red concentration, the solution pH, irradiation time and the UV irradiation intensity. The short degradation time shows that the nanometer TiO₂ can be used as an easy and efficient method to degrade the cresol red solution in wastewater.