Materials Literature
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Several well-known analytical techniques exist for the force profile analysis of permanent-magnet linear synchronous motors. These techniques, however, make significant simplifications in order to obtain the magnetic field distribution in the air gap. From the field distribution, the force profile can be found. These…
We have studied nonlinear flow behavior of entangled DNA solutions using particle tracking velocimetry in Couette and cone/plate geometries. At apparent shear rate γ̇ app < 0.1 s −1, the velocity profile is linear across the gap. Beyond the terminal region with γ̇ app < 40 s −1, the velocity profile becomes temporaril…
We present numerical renormalization group calculations for the zero-bias conductance of quantum dots made from semiconducting carbon nanotubes. These explain and reproduce the thermal evolution of the conductance for different groups of orbitals, as the dot-lead tunnel coupling is varied and the system evolves from c…
This work investigates the effect of pH during sol−gel synthesis on the brookite content and average anatase and brookite particle sizes. In general, anatase is the primary product of such sol−gel syntheses; however, significant amounts of brookite are frequently observed. Rietveld refinements of powder X-ray diffract…
Recently, there has been an increased attention and rapid development in the field of nanoscale collective electronic dynamics on surfaces of metal nanostructures, which is due to excitations called surface plasmons (SPs). This field, known as nanoplasmonics, is very promising for such applications as the next generat…
The DNA damage checkpoint and the spindle assembly checkpoint (SAC) are two important regulatory mechanisms that respond to different lesions. The DNA damage checkpoint detects DNA damage, initiates protein kinase cascades, and inhibits the cell cycle. The SAC relies on kinetochore-dependent assembly of protein comple…
We report structures of ${X}_{13}$ clusters for 26 metal elements found by global optimization of the energy calculated by density functional theory. The icosahedron is unstable in 19 of those cases. There are at least 11 truly distinct structures among the 26 global minima. Differences in geometries between elements…
Electrical doping is essential to achieve efficient photocurrent extraction in small-molecular-weight organic solar cells. It is shown that such doping creates strong electric fields at the donor-acceptor interface that prevent geminate electron–hole recombination.
We present the technology and performance of InAlN/AlN/GaN MOS HEMTs with gate insulation and surface passivation using Zr or Hf . About 10-nm-thick high- dielectrics were deposited by MOCVD before the ohmic contact processing. Plasma pretreatment allowed the reduction of the temperature of the ohmic contact annealing…
BACKGROUND: Blood oxygen level-dependent MRI (BOLD MRI) can be used to assess intra-renal oxygen bioavailability by measuring the R2(*) level, which reflects tissue deoxyhaemoglobin levels. This study was designed to identify the significance of BOLD MRI in differentiation of acute rejection (AR) and acute tubular nec…
The unique strategy for electrochemiluminescence (ECL) sensor based on the quantum dots (QDs) oxidation in aqueous solution to detect amines is proposed for the first time. Actually, there existed two QDs ECL peaks in anhydrous solution, one at high positive potential and another at high negative potential. However, h…
Aiming to achieve suitable polymeric biomaterials with controlled physical properties for hard and soft tissue replacements, we have developed a series of blends consisting of two photo-cross-linkable polymers: polypropylene fumarate (PPF) and polycaprolactone fumarate (PCLF). Physical properties of both un-cross-link…
Biotechnological companies and regulatory agencies are pursuing the complete characterization of protein therapeutics in every detail as a means to mitigate risks of product quality related safety issues. During the characterization of a recombinant humanized monoclonal antibody (referred to as rhuMAb), electrospray m…
Found in many large eukaryotic cells, particularly in plants, cytoplasmic streaming is the circulation of their contents driven by fluid entrainment from particles carried by molecular motors at the cell periphery. In the more than two centuries since its discovery, streaming has frequently been conjectured to aid in…
ADAMTS20 (Adisintegrin-like and metalloprotease domain with thrombospondin type-1 motifs) is a member of a family of secreted metalloproteases that can process a variety of extracellular matrix (ECM) components and secreted molecules. Adamts20 mutations in belted (bt) mice cause white spotting of the dorsal and ventra…
Nanostructured TiO2 with different hierarchical morphologies were synthesized via a warmly hydrothermal route. The properties of the products were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, N2 adsorption, UV-vis spectroscopy, etc. Two of the products, TiO2 1D na…
Single-crystalline, precise size-controlled nanowires and ultralong microwires with lengths reaching several millimeters of organic semiconductor 1 were prepared in large scale by cast assembly. The size and density of the nanowires and microwires could be controlled by simply adjusting the concentration of 1 in casti…
“Click” chemistry is a powerful method for post-polymerization modification of polymers and other materials. Because of the importance of lactide-based functional polymers in materials and medical applications, we synthesized 3,6-dipropargyl-1,4-dioxane-2,5-dione, an acetylene-functionalized glycolide monomer. Its sub…
Two novel porous zeolitelike metal-organic frameworks (ZMOFs) were constructed via the single metal ion-based molecular building block approach from rigid and directional tetrahedral building units and pyrimidinecarboxylate bridging ligands; their ion exchange and hydrogen sorption properties were evaluated.
We show that it is possible to distinguish between homogeneous and heterogeneous dislocation nucleation on the basis of differences in experimentally measured theoretical strengths. From nanoindentation tests, the critical shear stress for dislocation nucleation in two different Mo-alloy single crystals (Mo-3Nb and Mo…