Materials Literature
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We have developed an ultrafine bubble generating system, ultrafineGALF, upgrading the microGALF system to a flow rate of 0.24 m3/h. The ultrafineGALF system can generate a dense population of more than 109 ultrafine bubbles per ml. The density and size distribution of these bubbles have been measured using a NanoSight…
Putative global minima for Ga(N)⁺ clusters with size "N" ranging from 49 to 70 are found by employing the Kohn-Sham formulation of the density functional theory, and their evolution is described and discussed in detail. We have discovered a unique growth pattern in these clusters, all of which are hollow core-shell st…
Hollow CdS nanostructures have been synthesized by a two-step ionic exchange route, which consists of a first synthesis of Ag2S intermediated hollow frames derived from the reaction of S2− ions with AgCl cube-tetrapods, and a subsequent ion-exchange conversion of the obtained Ag2S to CdS hollow nanoframes. The investi…
The role of interchain interactions in determining the band gap of trigonal selenium (t-Se) is studied by expanding the orbital of t-Se as a linear combination of Bloch orbitals (LCBO) of isolated Se chains (IC-Se) within the plane-wave density functional theory method. Using the LCBO, it is revealed that anisotropic…
Multiblock sulfonated poly(arylene ether sulfone)s were synthesized to investigate the structural effects on their membrane properties. Three different types of sulfonated hydrophilic blocks were used; their structures possessed different acidity and local concentration of sulfonic acid groups. For the comparison betw…
A facile controlled-release delivery system has been developed with hydroxypropylmethylcellulose/poly(acrylic acid) (HPMC/PAA) hybrid nanogels by surfactant-free polymerization in aqueous solution. The effect of temperature, reaction time, and amount of cross-linker on the size and morphology of the nanogels has been…
Treatment of [TaCl 2 (CH 3 ) 3 ] with 2 equiv of NaOAr′ (OAr′ = 2,6-bis(diphenylmethyl)-4- tert -butylphenoxide) yields cleanly the bis-aryloxide trimethyl complex [(Ar′O) 2 Ta(CH 3 ) 3 ] ( 1 ), which is isolated in 92% yield and is spectroscopically and structurally characterized. Addition of 2 equiv of HOAr′ to [TaC…
Abstract Atomic layer deposition (ALD) using (MeCp)PtMe3 and O2 gas or O2 plasma is a well‐established technique for the deposition of thin films of Pt, but the potential of ALD to deposit platinum oxide (PtOx) has not yet been systematically explored. This work demonstrates how PtOx can be deposited by plasma‐assiste…
Traditional insulation paper (pressboard) used in power transformers has weaknesses such as poor thermostability, low breakdown voltage, and high permittivity, which leads to its degradation or even breakdown over time. For this paper, in order to judge if they could be used as new insulation materials for transformer…
The photoresist material SU-8 has found a variety of applications in microfabricated systems, such as microelectromechanical (MEMS) and lab-on-a-chip devices. Although the bulk properties of SU-8 are appropriate for many such applications, tailoring its surface-chemical properties has, until now, proven to be challeng…
Without any external additives such as growth factors, polymer beads containing methacrylic acid (MAA) promoted functional vascularization in vivo leading to faster cutaneous wound healing in diabetic mice and improved skin graft integration in Wistar rats. The aim of this work is to understand this material-driven va…
Currently, maintaining image quality during conjugate change is most frequently achieved through careful lens design with the multiconfiguration optimizing method and physical shifts of the lenses within the system such that the system remains in focus. However, in applications with operational limitations, such as en…
Abstract Experimental compaction curves for mud are key factors in sedimentary basin models but they are poor at predicting porosity evolution beyond 2.5 km depth, where chemical compaction dominates shale diagenesis. This study presents the results of experimental simulation of diagenesis and low-grade metamorphism o…
We present a joint photoelectron imaging spectroscopic and theoretical investigation on the triatomic ZrC2(-) anion. Vibrationally resolved spectrum was acquired at 532 nm photon energy. Electron affinity for the neutral ZrC2 cluster was determined to be 1.60 ± 0.07 eV. The CCSD(T) level of theory was used to explore…
We investigated the effect of specific interactions on the structure of interfaces between a brush and a hydrogel on the polymer chain length scale. We used a model system for which the interactions between the brush and the gel are switchable. We synthesized weak polyelectrolyte brushes of poly(acrylic acid) and hydr…
Methyl 13(1)-(di)cyanomethylene-pyropheophorbides were synthesized by Knoevenagel reactions of the corresponding 13(1)-oxo-chlorins prepared from modifying chlorophyll-a with malononitrile or cyanoacetic acid. Alternatively, methyl 13(1)-cyanomethylene-pyropheophorbides were produced by Wittig reactions of 13(1)-oxo-c…
Eccentric Au@(SiO2,TiO2) core–shell nanostructure that consists of a 20 nm Au core coated with mixed SiO2–TiO2 oxides shell was fabricated by a facile sol–gel method. The prepared samples were characterized by means of TEM, EDS, FTIR, and N2 adsorption–desorption isotherms. The results showed that incorporation of TiO…
Over the past few years there have been an increasing number of applications calling for ultra-low roughness (ULR) surfaces. A critical demand has been driven by EUV optics, EUV photomasks, X-Ray, and high energy laser applications. Achieving ULR results on complex shapes like aspheres and X-Ray mirrors is extremely c…
The design and experimental demonstration of an open cavity in the microwave region is presented. The resonance condition is achieved through the cancellation of lightpaths in positive and negative refractive index materials. The positive index material is a structured aluminium surface supporting a spoof surface plas…
The reaction of ClO2(•) with S2O3(2-) in aqueous solution is a component of the "crazy clock" reaction of ClO2(-) with S2O3(2-), and under conditions of excess S2O3(2-) the absorbance at 360 nm due to ClO2(•) decays with sigmoidal kinetics. A chain reaction mechanism is inferred on the basis that very small concentrat…