Materials Literature
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Cu2ZnSnS4 (CZTS) thin films were prepared by a sol–gel sulfurization method. Sulfurization was carried out in H2S of various concentrations and the properties of the films were investigated. The CZTS thin films sulfurized at 500 °C for 1 h in 0.5 and 3% H2S atmospheres had large grains compared with the film sulfurize…
Art. 094101, 8 S.
Nonpolar Si-doped a-plane GaN layers were grown using metal organic chemical vapor deposition (MOCVD) with different silane (SiH4) flow rates. The on-axis full width at half maximum (FWHM) of X-ray rocking curves (XRCs) along the c- and m-axis directions showed that Si doping barely affected the anisotropy of a-plane…
Room-temperature photoluminescence (PL) has been studied in Cu(In,Ga)Se2 (CIGS) films with emphasis on the near-band-edge PL of CIGS during the solar cell fabrication process. A step-by-step PL spectrum mapping measurement was carried out on the following cell processes: depositions of CIGS absorber, CdS buffer, high-…
A series of polymers system based on poly(butyl methacrylate) (PBMA) and poly (hydroxyethyl methacrylate) semi-interpenetrating polymer networks (semi-IPN) (PBMA/ PHEMA = 70/30 by weight) have been attained by a sequential polymerization method using divinylbenzene (DVB) as cross-linking agent. Oil-absorptive fibers a…
BiOI nanolamellas and BiSI nanowires were synthesized using Bi(NO3)3·5H2O, (NH2)2CS and I2 as reactants in the solvothermal process with ethanol as the system media. The as-prepared samples were characterized by X-ray powder diffraction (XRD), scanning electronic microscopy (SEM), Energy-Dispersive X-ray Spectrometer…
This work contextualizes the research of materials that can be applied as artificial muscles. The main motivation of this research is the importance of the development of mechatronic systems for the replacement of traditional devices of actuation and motion based on rotational electrical motors by other devices that r…
We performed circulating modeling before the studying inter turn fault. It used a finite element method (FEM)-based model to consider the magnetic non-linearity. By integrating the developed model with a current controlled voltage source inverter (CCVSI) model, the distributed characteristics of an inter-turn fault op…
We report on the change in the structural and magnetic properties of magnetically soft ternary Co80-xFexB20 alloys as a function of composition, thickness, and annealing temperature. Compositions high in cobalt show a significant change in coercivity after annealing. This is explained using the random anisotropy model…
This paper presents an improved variable band hysteresis current controller for a two level three phase voltage source inverter. The controller takes the average voltages of the phase-leg switched outputs as an approximation to the load back-EMFs, and uses this result to vary the hysteresis bands to maintain constant…
High quality single crystals of heavy Fermion CeCoIn 5 superconductor have been grown by flux method with a typical size of (1 − 2) × (1 − 2) × (∼ 0.1) mm 3 . The single crystals are characterized by structural analysis from x-ray diffraction and Laue diffraction, as well as compositional analysis. Magnetic and electr…
A hybrid power system composited by ultracapacitor, battery, and Bi-directional DC/DC converter is studied in this paper, and the ultracapacitor paralleled with battery pack through DC/DC converter. A 20kW hybrid power system is designed and applied to acceleration and regenerative braking of electric vehicle, and a H…
Doxorubicin-encapsulating liposomal formulations, known as Doxil, have been used for the treatment of Kaposi's sarcoma and ovarian cancer. However, there is still a need for a drug delivery system for doxorubicin that limits the treatment's side effects, namely, mucositis and hand-and-foot syndrome. The AG73 peptide d…
We design an effective light trapping scheme through engineering metallic gratings and one-dimensional dielectric photonic crystals (PhCs) to increase the optical path length of light within the solar cells. This incorporation can result in broadband optical absorption enhancement not only for transverse magnetic pola…
Crystal structures of Citrobacter freundii methionine γ-lyase complexes with the substrates of γ- (L-1-amino-3-methylthiopropylphosphinic acid) and β- (S-ethyl-L-cysteine) elimination reactions and the competitive inhibitor L-norleucine have been determined at 1.45, 1.8, and 1.63 Å resolution, respectively. All three…
This paper presents a general method for predicting the cogging torque in surface-mounted permanent magnet machines having different slot sizes and uneven positions by synthesizing the cogging torque associated with each slot, which is obtained by the subdomain model. The developed model is applied to analyse the infl…
In this paper, nitrogen doped TiO2 photoanodes were achieved by calcining the mixture of urea and the commercial P25 nanoparticles slurry. Its application in the dye sensitized solar cells was examined. X-ray photoelectron spectroscopy indicated the N substituted the O atoms and formed N-Ti-O bonds. The optical band g…
This work was undertaken to help understand and interpret the ultrasonic wave reflection response of Portland cement paste as it transforms from a fluid-like suspension to a solid in the first hours after mixing. A high impact polystyrene buffer (delay line) was used to measure small changes in the P- and S-wave refle…
A pendant drop tensiometer, coupled with image digitization technology and a best-fitting algorithm, was built to accurately measure the surface tension of glass melts at high temperatures. More than one thousand edge-coordinate points were obtained for a pendant glass drop. These edge points were fitted with the theo…
A strict analytical expression for the Fermi energy of electrons in a thin metallic plate as a function of the plate thickness at a given electron density has been derived for the first time. The derivation has been carried out taking into account the size quantization in the free-electron approximation at zero temper…