Materials Literature
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The preparation of thermoresponsive PNIPAAm hydrogel scaffolds with encapsulated AuNPs showed high analyte-trapping ability and tailored plasmonic properties with high sensing efficiency.
The new cesium pentaborate HP-CsB5 O8 is synthesized under high-pressure/high-temperature conditions of 6 GPa and 900 °C in a Walker-type multianvil apparatus. The compound crystallizes in the orthorhombic space group Pnma (Z=4) with the parameters a=789.7(1), b=961.2(1), c=836.3(1) pm, V=0.6348(1) nm(3) , R1 =0.0359…
A new methodology has been demonstrated for ultratrace detection of Hg(2+), working at the limit of a few tens of metal ions. Bright, red luminescent atomically precise gold clusters, Au@BSA (BSA, bovine serum albumin), coated on Nylon-6 nanofibers were used for these measurements. A green emitting fluorophore, FITC (…
Vascular diseases are increasing health problems affecting > 25 million individuals in westernized societies. Such patients could benefit from transplantation of tissue-engineered vascular grafts using autologous cells. One challenge that has limited this development is the need for cell isolation, and risks associate…
Ultra-high-temperature composite materials HfB 2 -SiC containing 45 vol % SiC were prepared by spark plasma sintering. The behavior of a sample of this composition under exposure to a subsonic jet of dissociated air of a high-frequency induction plasmatron was studied; the total time was more than 30 min. Under certai…
We review the scientific history of random close packing (RCP) of equal spheres, advocated by J D Bernal as a more plausible alternative to the non-ideal gas or imperfect crystal as a structural model of simple liquids. After decades of neglect, computer experiments are revealing a central role for RCP in the theory o…
In this work, SMPUs with non-planar ring structures in the hard segments display a low degree of phase separation but excellent shape recoverability (shape recovery rate ∼99% with 500% strain). The accepted wisdom is that there are two criteria for SMPUs possessing good shape recoverability: (i) high degree of phase s…
In this Progress Report some recent trends and future perspectives towards the use of nanomaterials for smart food packaging and quality control of food are given. The examples and discussion are meant to illustrate the potential use of nanotechnology for food sustainability rather than to review the state of the art…
We present the design, simulation, fabrication, and characterization of an out-of-plane reconfiguration of terahertz (THz) U-shape metamaterial. The U-shape metamaterial is consisted of bilayer cantilevers with different coefficient of thermal expansion. The electromagnetic tunability of U-shape metamaterial is accomp…
This paper reports an experimental investigation on the macroscopic mechanical behaviors and damage mechanisms of the plain-woven (2D) C/SiC composite under in-plane on- and off-axis loading conditions. Specimens with 15°, 30°, and 45° off-axis angles were prepared and tested under monotonic and incremental cyclic ten…
Spider silk proteins undergo a complex series of molecular events before being converted into an outstanding hierarchically organized fiber. Recent literature has underlined the crucial role of the C-terminal domain in silk protein stability and fiber formation. However, the effect of pH remains to be clarified. We ha…
A new vacuum-channel transistor with a carbon nanotube cathode and nanometer-scale channel length-called a slit-type vacuum-channel transistor is proposed and investigated. The suggested device structure features distinguishable cutoff, linear, and saturation regions with a negligible gate leakage current. Its channel…
Pr x Ce 1– x O 2−δ can potentially serve as both the cathode and anode in solid oxide fuel cells (SOFCs), given that it exhibits significant mixed ionic-electronic conductivity (MIEC) under both cathodic and anodic conditions. While MIEC is strongly dependent on oxygen nonstoichiometry (δ), there have been few ways to…
We demonstrate in this article the first use of a family of cross-linked polymers synthesized from acetylenic monomers (diethynylbenzene and phenylacetylene) as new polymer precursors for high-yield synthesis of nanoporous activated carbons of tuneable textural properties. A range of cross-linked polymers of varying c…
Laser-ablation-generated AuCeO2(+) and CeO2(+) oxide clusters were mass-selected using a quadrupole mass filter and reacted with H2 in an ion trap reactor at ambient conditions. The reactions were characterized by mass spectrometry and density functional theory calculations. The gold-cerium bimetallic oxide cluster Au…
Abstract This paper deals with a mathematical model describing the inward solidification of a melt of phase change material within a container of different geometrical configuration like slab, circular cylinder or sphere under the most generalized boundary conditions. The thermal and physical properties of melt and so…
The quality and temperature stability of 1 nm Bi 2 Te 3 /5 nm Sb 2 Te 3 superlattices prepared by molecular beam epitaxy for the first time was investigated by in situ and ex situ X-ray diffraction and transmission electron microscopy. Upon heating, the superlattice structures are not stable against interdiffusion of…
Zinc oxide (ZnO) nanostructures are among the most interesting nanomaterials due to their remarkable performance in optics, electronics, semiconducting materials, and photocatalysis. Recent literature reports the synthesis and characterization of ZnO–polymer nanocomposites which are more flexible materials for various…
Self-assembled plasmonic structures combine the specificity and tunability of chemical synthesis with collective plasmonic properties. Here we systematically explore the effects of symmetry breaking on the chiroptical response of an assembly of plasmonic nanoparticles using simulation. The design is based on a tetrahe…
Abstract High‐power micro‐supercapacitors based on micrometers‐thick graphitic petal electrodes have been designed and fabricated. The electrodes were prepared by using microwave plasma chemical vapor deposition and patterned by optical lithography and reactive ion etching. Charge/discharge rates up to 100 000 mV s −1…