Graphene is considered to be an excellent fast saturable absorber (SA) with a broad operation bandwidth due to its ultrafast carrier dynamics and linear energy-momentum relation near the Dirac point [1]. Since Bao, Zh...
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ISBN:
(纸本)9781457705328
Graphene is considered to be an excellent fast saturable absorber (SA) with a broad operation bandwidth due to its ultrafast carrier dynamics and linear energy-momentum relation near the Dirac point [1]. Since Bao, Zhang, et al. employed it to successfully mode-lock a fiber laser for the first time [2], extensive efforts [3] have been devoted to developing this popular field, i.e., graphene-based ultrafast photonics.
Superparamagnetic FePt nanoparticles (NPs) have attracted considerable attention due to their extremely promising potentials as the diagnostic and therapeutic reagent in biomedical *** the present study,water-soluble ...
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Superparamagnetic FePt nanoparticles (NPs) have attracted considerable attention due to their extremely promising potentials as the diagnostic and therapeutic reagent in biomedical *** the present study,water-soluble FePt NPs about 4 nm in diameter and oil-soluble FePt NPs about 6 nm in diameter were successfully synthesized using amino acids and oleic acid/oleylamine as the capping reagent,*** component,size and magnetic property of FePt NPs were tuned through adjusting the reactant molar ***,the anticancer activities of FePt NPs with different capping reagents were evaluated using different brain tumor cell lines (such as U251,U87,H4) as the *** growth prohibition of tumor cells by NPs was measured through MTT assay,while the interaction of NPs and tumor cells was observed through transmission electron microscopy (TEM).The results show that FePt NPs capped with oleic acid/oleylamine displayed better cytotoxic effects toward brain tumor cells than L-cysteine-capped FePt *** is interesting that the cellular uptake of FePt NPs seem to be similar in three cell *** conclusions,we synthesized successfully superparamagnetic FePt NPs with the different component using different capping reagents,which displayed different anticancer activities on Human brain tumor *** results also provide a promising potential of superparamagnetic FePt NPs as the multifunctional diagnostic and therapeutic reagent in biomedical fields.
The increasing needs from industry for efficient and economic manufacturing lead to the emergence and rapid development of integrated computational materials engineering (ICME) that integrates manufacturing simulation...
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ISBN:
(纸本)9780470943199
The increasing needs from industry for efficient and economic manufacturing lead to the emergence and rapid development of integrated computational materials engineering (ICME) that integrates manufacturing simulation, advancedmaterials models and component performance analysis into a whole comprehensive framework, which can be used to optimize the manufacturing process, materials selection and product design. Modeling and simulation of process-structure- property is one of the primary themes of ICME. The present paper presents some latest research and development of modeling and simulation of magnesium (Mg) alloy castings at different length scales for predicting the microstructure and mechanical properties of the casting components, where macro-scale simulation of mold filling and solidification, micro-scale model of microstructure evolution during solidification, and mechanical property model based on structure information are demonstrated. The macro-scale simulation of the casting process took the process parameters as initial inputs and provided thermal history of the whole casting for micro-scale modeling. In the micro-scale modeling, the dendritic structure of primary phase was simulated in both two dimensions (2D) and three dimensions (3D) using a modified cellular automaton (MCA) model that takes heterogeneous nucleation, solute diffusion, interface curvature, and growth anisotropy into account. In the mechanical property modeling, main strengthening mechanisms of Mg-Al series cast Mg alloy were considered. Using the current model the yield strength distribution of Mg alloy wheel casting for automobile was predicted. Material property tests were carried out and the capability of the model was evaluated.
Consumable DE-GMAW is a novel GMAW process with higher greater productivity. However, the consumable DE-GMAW process can hardly maintain stable without a proper control. Aiming at this problem, a rapid prototyping con...
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Research work of wire extension control with Dual freedom PID controller in pulsed MIG welding process of aluminum alloy. In the condition of optimum parameters, the simulations were firstly completed by separately us...
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A real-time synchronous acquisition and control system was designed to meet the requirements of measurement and control for pulsed MIG welding process of aluminum alloy using virtual instrument design software LabVIEW...
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Both in-phase and anti-phase two-soliton bound states were observed in a carbonnanotube based mode-locked fiber laser. This paper also reports preliminary results of bound states with graphene as the saturable absorbe...
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