Materials Literature
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Fabrication of nanostructures with great complexity and regularity is a topic of intense current interest because of their importance both in fundamental theories and applications. Here we report an interesting finding of the formation of ordered polymeric double helices with precise structures and high stability. The…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Z. Qiu, T. An, K. Uchida, D. Hou, Y. Shiomi, Y. Fujikawa, E. Saitoh; Experimental investigation o…
Fatigue is a damage accumulation process in which material property deteriorates continuously. For the usual failure mode of mechanical components under vari-able loading, fatigue life prediction issues are very impor-tant for selection, design, and safety assessments of these components. Based on continuum damage mec…
We introduce a unified subclass of the function class Σ of biunivalent functions defined in the open unit disc. Furthermore, we find estimates on the coefficients |a2| and |a3| for functions in this subclass. In addition, many relevant connections with known or new results are pointed out.
In this study, novel hierarchical rose-like Cu1.8Se microspheres with a porous three-dimensional (3D) framework were successfully synthesized by using a one-pot in situ growth method at low temperature (60 °C). The Cu1.8Se microspheres covered the surface of the 3D porous framework. The formation mechanism was investi…
Ionic polymer-metal composites (IPMCs) consist of a thin ionomer plated with metal electrodes. IPMCs exhibit large bending deformations when a small voltage is applied between its electrodes. This bending process is the result of variations in the cation and solvent distribution inside the IPMC. The bending behavior d…
A sol–gel-based approach to the fabrication of tin oxide (SnO 2 ) thin films containing SnO 2 -coated gold nanoparticles is described. In this approach, gold nanoparticles with a mean diameter of ∼15 nm were coated with thin layers of SnO 2 . The composite particles were ∼55 nm in diameter with SnO 2 shells that were…
Heats of formation were predicted for nine ZnX complexes (X = Zn, H, O, F 2, S, Cl, Cl 2, CH 3, (CH 3 ) 2 ) using 14 density functionals, MP2 calculations, and the CCSD and CCSD(T) coupled-cluster methods. Calculations utilized the correlation consistent cc-pVTZ and aug-cc-pVTZ basis sets. Heats of formation were most…
Virtual screening involves the generation of structure libraries, automated analysis to predict properties related to application performance and subsequent screening to identify lead systems and estimate critical structure–property limits across a targeted chemical design space. This approach holds great promise for…
We have investigated temperature-dependent photoluminescence (PL) of green and blue light-emitting InGaN/GaN multiple quantum wells at different excitation powers. Two InGaN-related PL peaks centered at around 2.4 and 2.7 eV are assigned to quasi-quantum dot (QD) emissions (PD) and the InGaN matrix emission (PM), resp…
In this study, an energy model based on the first law of thermodynamics is developed to evaluated energy efficiency and specific energy consumption. The influences of hot air temperature and initial weight of coffee beans on energy consumption are considered. Furthermore, a comparison between combined microwave–hot ai…
The authors report a new chemical approach for the selective atomic layer deposition of ultrathin layers of zirconium oxide (ZrO2) on copper patterned silicon surfaces. Instead of using common atomic layer deposition (ALD) oxygen sources such as water, oxygen, or ozone, the authors use ethanol, which serves as oxygen…
PURPOSE: To improve slice coverage of gradient echo spin echo (GESE) sequences for dynamic susceptibility contrast (DSC) MRI using a simultaneous-multiple-slice (SMS) method. METHODS: Data were acquired on 3 Tesla (T) MR scanners with a 32-channel head coil. To evaluate use of SMS for DSC, an SMS GESE sequence with tw…
High resolution x-ray diffraction based reciprocal space mapping is employed to investigate vertical correlation in submonolayer Zn(Cd)Te/ZnCdSe type-II quantum dots (QDs). The average lateral deviation from one dot to another is found to decrease from 13%–17% to 8%–11% with an increase in QD size. Narrower photolumin…
We studied state of the art perpendicularly magnetized tunnel junctions to identify performance improvement opportunities. The free layer has both a low damping and a large anisotropy. Conversely, the perpendicular remanence of the reference layer requires its encapsulation and its coupling with the hard layer. The we…
A phenomenological model for the study of the charge recombination process in dye-sensitized solar cells is presented. The model combines a tight binding description of the system with a rate expression for the charge recombination, and it is used to describe the role of defects of different energies and in different…
The work function of indium tin oxide (ITO) was modified using caesium fluoride (CsF). Various concentrations of CsF was spin-coated on top of ITO and baked while the residual CsF was washed away with DI water. The work function of all the ITO samples was measured using ultraviolet photoelectron spectroscopy and it wa…
Intravaginal mucoadhesive microspheres of tenofovir disoproxil fumarate (TDF) has been formulated using chitosan as the matrix-forming mucoadhesive polymer and evaluated. Ionotropic gelation method was used to produce the microspheres. Drug-polymer compatibility, percentage yield, particle size determination by optica…
We have investigated CdTe thin film solar cells without activation treatment and with CdCl2 activation treatment at temperatures between 370 and 430 °C using a constant activation time of 25 min. For this purpose, CdS/CdTe layers were deposited by closed-space-sublimation on FTO coated float glass. The solar cells wer…
The Haupt-effect is a rather seldom used hyperpolarization method. It is based on the interdependence between nuclear spin states and rotational states of nearly free rotating methyl groups having C3 symmetry. A sudden change in temperature from 4.2 K to room temperature by fast dissolution yields considerably enhance…