Materials Literature
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A novel comb-like derivative CPEG-g-DNQ was prepared by incorporating light responsive 2-diazo-1,2-naphthoquinone (DNQ) groups into the structure of comb-like poly(ethylene glycol) (CPEG). DLS and TEM results showed that CPEG-g-DNQ self-assembled into spherical micelles with an average size of about 135 nm in water. U…
Purpose The purpose of this paper is to improve the mechanical and thermal properties of photosensitive resin for rapid prototyping (RP) by modifying with nano‐TiO 2 . Design/methodology/approach The silane coupling agent was selected to treat the surface of anatase nano‐TiO 2 particles. The IR spectrum showed that th…
Abstract Natural rubber grafted with poly(butyl acrylate) (NR‐g‐PBA) in an attempt to toughen polylactide (PLA) was prepared by grafting butyl acrylate onto natural rubber (NR) through emulsion polymerization. The purified NR‐g‐PBA was confirmed by Fourier transform infrared spectroscopy and nuclear magnetic resonance…
Nanoparticles resistant to salt-induced aggregation are continually being developed for biomedical and industrial applications. Because of their colloidal stability these functionalized nanoparticles are anticipated to be persistent aquatic contaminants. Here, we show that Corbicula fluminea, a globally distributed cl…
The oxidation and scale crystallization kinetics of Hi‐Nicalon TM ‐S SiC fibers were measured after oxidation in dry air between 700° and 1400°C. Scale thickness, composition, and crystallization were characterized by TEM with EDS , supplemented by SEM and optical microscopy. TEM was used to distinguish oxidation kine…
MOTIVATION: X-ray crystallography-based protein structure determination, which accounts for majority of solved structures, is characterized by relatively low success rates. One solution is to build tools which support selection of targets that are more likely to crystallize. Several in silico methods that predict prop…
Plant seedlings were exposed to single-walled carbon nanotube-quantum dot conjugates (SWCNT-QD) mixed in the growth medium in order to understand the interactions between these multicomponent nanosystems and plants. A combination of fluorescent and Raman-scattering 2D mapping analysis was used to clearly monitor the p…
Abstract Co ⋅ B‐based materials are widely used as catalysts for hydrogen generation through sodium borohydride self‐decomposition. In the mid 1990 s, the aqueous and organic chemistry involved in Co ⋅ B synthesis and handling was studied. Nevertheless, the exact microstructure of these catalysts has remained unsolved…
More confused than ever: Three types of N-confused corrole isomers (NCCs) were synthesized, and the structures of these isomers were revealed by single-crystal X-ray crystallography. The position of the confused pyrrole ring in the NCC has a pronounced effect on optical and anion-binding properties.
Possible superconductivity in the recently discovered (Tl,K)Fe x Se 2 compounds is studied from the viewpoint of doped Mott insulator. The Mott insulating phase is examined to be preferred in the parent compound at x =1.5 due to the presence of Fe-vacancies. Partial filling of vacancies at the Fe-sites introduces elec…
Abstract In this article, we show that given a thermoresponsive shape memory polymer, it is possible to alter a number of its properties, such as the recovery temperature, shape fixity ratio, maximum recovery stress, and final recovery stress (and even a right combination of some of them, e.g., the maximum recovery st…
There is a recognized need to create well-defined polymer probes for in vivo and clinical positron emission tomography (PET) imaging to guide the development of new generation polymer therapeutics. Using the RAFT polymerization technique in combination with the reactive ester approach, here we have synthesized well-de…
We present a detailed study of non-planar or 'stand-up' split ring resonators operating at terahertz frequencies. Based on a facile multilayer electroplating fabrication, this technique can create large area split ring resonators on both rigid substrates and conformally compliant structures. In agreement with simulati…
The role of the interface roughness of Bi-Te core/shell nanowires is reported in reducing lattice thermal conductivity, which are prepared by on-film formation of nanowire (OFF-ON) that is capable of growing high-quality single-crystalline Bi nanowires, and by the subsequent sputtering of Te onto the Bi nanowires. The…
Using femtosecond transient absorption and time-resolved photoluminescence spectroscopy, we studied the electron versus hole dynamics in photoexcited quasi-type-II heterostructured nanocrystals with fixed CdTe core radii and varying CdSe shell coverage. By choosing the pump wavelength in resonance with the core or the…
A novel stearic acid (SA)/3-aminopropyltrethoxysilane (APS) composite structure was fabricated using the combined method of the Langmuir-Blodgett technique and self-assembly monolayer (SAM) technique. Its frictional, adhesive properties and interface contact types between the atomic force microscope tip and the sample…
Chiral polymer brush films based on L(D)-valine units show different abilities to modulate protein adsorption onto the surface. This provides a novel biomimetic strategy for the design of biointerface materials and devices.
The electrochemical actuation of covalent carbon materials, such as graphene, immersed in liquid electrolytes has shown immense promise for a myriad of applications. To realize this potential, an intimate understanding of the physics behind the actuation is essential. With the use of ab initio density functional calcu…
Electron-density analyses of tetragonal and cubic 0.4 PbTiO3-0.6 BiFeO3 (PTBF) have indicated that the (Bi,Pb)-O bond in tetragonal PTBF exhibits strong covalency compared with that in cubic phase. Compared with Pb−O, the Bi−O exhibits stronger covalency, which would be a key factor of extremely large tetragonality an…
We report on high-resolution x-ray diffraction measurements of (Ga,Mn)As and (Ga,Mn)(As,P) epilayers. We observe a structural anisotropy in the form of stacking faults that are present in the (111) and (11$\overline{1}$) planes and absent in the ($\overline{1}$11) and (1$\overline{1}$1) planes. They occupy ${10}^{\ens…