Materials Literature
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Purpose: To characterize the dose response of optically stimulated luminescence (OSL) from Al2O3:C detectors (OSLDs) using continuous wave (CWOSL) and pulsed (POSL) stimulations and different detection windows.Methods: Al2O3:C OSLDs were irradiated for a dose range from 0.1 to 200 Gy using a Co-60 source. Readouts of…
In this paper, the effects of cutting parameters and tool geometry parameters on the damaged layer were investigated with precision cutting of high strength alloy experiments. The mechanical and thermal effects on microstructure of sub-surfaces in precision turning high strength alloy are studied with a scanning elect…
Abstract In this paper, an effective synthesis route for CdSe/ZnS core/shell quantum rod fabricated by a single‐molecular precursor is introduced. From the experiment results, the optimum volume ratio of as‐prepared CdSe to ZnS raw material can be achieved of 1:1.7. The photoluminescence intensity of CdSe/ZnS increase…
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Este artigo apresenta a aplicação de uma técnica de controle do tipo backstepping a sistemas de pós-tratamento de gases de escape em veículos diesel operando com catalisadores SCR (selective catalytic reduction). A lei de controle é projetada para um modelo reduzido do sistema SCR, adequado ao controle em malha fechad…
Abstract Sharp, uniform, stable, and environment‐hard field‐emitter arrays (FEAs) have been fabricated by Transfer‐Mold fabrication method. These FEAs have potential for realizing stable and low operation voltage field‐emission displays and field‐emission lamps that are resistant to highly oxidizing atmospheres during…
The cell characteristics of an alloy FePt nano-dot (ND) charge trapping memory with a high- k dielectric as a blocking oxide was investigated. Adoption of a high- k Al 2 O 3 material as a blocking oxide for the metal nano-dot memory provided a superior scaling of the operation voltage compared to silicon oxide under a…
Graphene demonstrated potential for practical applications owing to its excellent electronic and thermal properties. Typical graphene field-effect transistors (FETs) and interconnects built on conventional SiO2/Si substrates reveal the breakdown current density on the order of 108A/cm2, which is ~100× larger than the…
Nanomagnetic logic, though inherently energy efficient, has been historically limited by the energy overhead of the local write operations The ability to rotate magnetizations with strain rather than an applied field opens up the possibility of highly pipelined and fast, Bennett-clocked, low power logic with energy ef…
Abstract Defective silica sphere arrays having locally hexagonal‐closed‐packed structure but lack of long range ordering were incorporated into phosphorescent organic light emitting diode devices as grating to extract the waveguided modes. With a 0.5 μm grating, the current and power efficiency were enhanced by 55% an…
Purpose: To extend CADx techniques for High Spectral and Spatial Resolution (HiSS) breast MRI, and to assess the ability of the Lorentzian‐fit‐ subtraction residual maxima of the water resonance spectra to distinguish between benign and malignant breast lesions on a voxel‐by‐voxel basis. Methods: HiSS high resolution…
The initiation mechanism of a negative pulsed discharge in pressurized carbon dioxide including supercritical (SC) phase was studied using pulsed Schlieren and photomultiplier techniques. The appearance of the negative streamer at its initial stage was quite different from the positive one: a bush of negative polarity…
Purpose: It is known that the PSL (photo‐stimulated luminescence) signal fades with time after x‐ray irradiation and eventually reaches a plateau. The purpose of this work is to determine whether x‐ray generated electrons stored in non‐dosimetric shallow traps can be liberated prior to dose readout. If so, we would ac…
In order to prepare chitosan-based nanoparticles for drug delivery, we synthesis chitosan-poly(methacryloyl polyethylene glycol succinic acid, MA-PEG400-SA) nanoparticles in aqueous solution via template polymerization. The structure of the chitosan-poly(MA-PEG400-SA) nanoparticles was characterized by FT-IR spectra,…
PURPOSE: This study aims to investigate the prompt secondary gamma spectrum and thedepth-dose distributions of incident 40 MeV protons onto various phantom materials.The goal is to find a relationship between the secondary prompt gamma emissions andthe range of the incident particles. METHODS: ) and the built-in Geant…
The composition and sequence structure of a serial of ethylene-propylene diene (EPDM) were analyzed according to the 13C-NMR analysis. The stress-induced crystallization was occurred in EPDM 3080 which the segment chains of methylene were long enough. The mechanical properties of stress-induced crystallization of EPDM…
The precipitation behavior of nitrides and carbides occurred in aging process for 10Cr21Mn16NiN austenitic stainless steel at intermediate temperature was investigated by use of thermodynamic calculation, metallography and electron microscopy analysis. The precipitates evolved from chain-like initiatively along grain…
Abstract The paper‐like cholesteric liquid crystal display (Ch‐LCD) has become the next generation of electronic readers in consuming market. The embedded fully symmetric self‐biased switched‐capacitor (FSSBSC) with single‐inductor high voltage bipolar‐output (SIHBO) converter is proposed to achieve the energy and are…
The work presents a Mossbauer study of changes in the structure and phase composition of Fe-Cr-Co-W-Ga alloys with mechanical and magnetic properties appropriate for a new application of them as materials for rotors of high-speed engines. The changes are traceable to variations of the initial composition. A comparison…
Fracture failure behavior of the electric resistance welding (ERW) seam weld of Φ355.6×10.3 mm L360 in high internal pressure was investigated in this paper. The mechanical, metallurgical and fractographic characteristics were studied to clarify the reason of fracture failure for the ERW seam weld. The experimental re…