Materials Literature
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In this study, a group of carbon cryogels have been synthesized using resorcinol formaldehyde as precursors, and altered via catalysis and activation, to obtain varied nanostructures and pore size distributions. To understand the relation between structure and electrochemical properties, an alternate approach to de Le…
We report on a design of a TM-mode based metamaterial-loaded waveguide. Network analyzer measurements demonstrated a left-handed propagation region for the TM11 mode at around 10 GHz. A beamline experiment was performed with the metamaterial-loaded waveguide. In this experiment, a 6 MeV electron beam passes through th…
Application of stimuli in sequence to developing cultures in vitro offers the potential to intricately direct cell development and differentiation by following the template of native tissue behavior. We hypothesize that administration of mechanical stimulation at the peak of growth factor-induced cell activity will di…
We report on the formation of linear assemblies of citrate-stabilized spherical gold nanoparticles (GNPs) in the presence of acetanlide in aqueous medium. The length of the assembly was dependent on the concentration of acetanilide. At higher concentrations branching of the assembly occurred instead of an increase in…
Intermolecular sensitization of lanthanide ions was effectively implemented in the development of fluorescent sensors targeting cyclin A. A chelating unit has been conjugated to peptides containing a known cyclin A binding motif (CBM). Upon interaction of the modified terbium-chelating peptides with the cyclin A subst…
Thermal and optical behaviours of a series of highly π‐conjugated hockey stick‐shaped non‐symmetrical 1,2,4‐oxadiazoles, with liquid crystalline properties, have been studied. All of them presented liquid crystalline phases, in particular smectic and nematic phases typical of calamitic compounds. Although these substa…
The mechanical properties of individual WS2 nanotubes were investigated and directly related to their atomic structure details by in situ transmission electron microscope measurements. A brittle mode deformation was observed in bending tests of short (ca. 1 μm in length) multilayer nanotubes. This mode can be related…
BACKGROUND: Drug-eluting polymer implants present a compelling parenteral route of administration for cancer chemotherapy. With potential for minimally invasive, image-guided placement and highly localized drug release, these delivery systems are playing an increasingly important role in cancer management. This is par…
The effect of an ultrafine-grained (UFG) structure formed in an aluminum alloy 1570 using severe plastic deformation by high-pressure torsion (HPT) at room temperature and at temperatures of 100 and 200°C on the mechanical properties (strength and plasticity) has been investigated. The specific features of the UFG sta…
Carboxylic acid-functionalized single walled carbon nanotubes (SWNTs) prepared via the reaction of an amino acid, NH2(CH2) n CO2H where n = 1 (glycine, GLY), 5 (6-aminohexanoic acid, AHA), 10 (11-aminoundecanoic acid, AUDA), with fluorinated single walled carbon nanotubes (F-SWNTs) have been characterized by MAS 13C N…
Equilibrium argon adsorption from the gas phase on mesoporous MCM-41 silica of hexagonal structure is directly studied by in situ synchrotron powder X-ray diffraction (XRD) measurements at SPring-8. The diffraction intensity data is analyzed by extending the previously developed analytical formula for the crystal stru…
Filtered cathodic vacuum arc (FCVA) deposition is characterized by plasma beam directionality, plasma energy adjustment via substrate biasing, macroparticle filtering, and independent substrate temperature control. Between the two modes of FCVA deposition, namely, direct current (dc) and pulsed arc, the dc mode yields…
Evidences of an intramolecular exciplex intermediate in a photoinduced electron transfer (ET) reaction of double-linked free-base and zinc phthalocyanine-C60 dyads were found. This was the first time for a dyad with phthalocyanine donor. Excitation of the phthalocyanine moiety of the dyads results in rapid ET from pht…
A commercial activated carbon was modified by surface treatment using three chemicals, nitric acid, hydrogen peroxide, and ammonia, respectively. The modified carbons were characterized by N2 adsorption-desorption isotherms and FTIR spectroscopy. The resultant carbon electrode-based electric double-layer capacitors (E…
To understand the environmental impacts of carbon nanotubes (CNTs), the toxicity study was carried out with water-soluble multi-walled carbon nanotubes (MWCNTs) using zebrafish (Danio rerio) as a model system. Zebrafish embryos were treated with different concentrations of MWCNTs. Teratogenic effects were evaluated th…
Core-shell ZnO:MgO nanocrystals have been synthesized by a sequential preparative procedure and capped with carboxymethyl beta-cyclodextrin (CMCD) cavities, thereby rendering the surface of the nanocrystals hydrophilic and the particles water-soluble. The water-soluble CMCD-capped ZnO:MgO nanocrystals emit strongly in…
Polarization-dependent structures have been formed on the silicon surface under the action of femtosecond laser pulses. Some model concepts are proposed to describe changes in the response of the semiconductor surface caused by the generation of a nonequilibrium electron-hole plasma and explain the excitation of surfa…
A new and simple method for preparation of hollow calcium carbonate nanospheres under mild conditions is developed. Hollow vaterite nanospheres are achieved by water-induced phase transformation of poly(4-sodium styrene sulfonate)-stabilized amorphous calcium carbonate (PSS−ACC) in water−ethanol solution at room tempe…
It was found that luminol could react with AgNO 3 in the presence of gold colloid to generate chemiluminescence (CL) at 425 nm. UV−visible spectra and X-ray photoelectron spectra showed that AgNO 3 was reduced by luminol to Ag in the CL reaction, which covered on the surface of gold nanoparticles to form Au/Ag core/sh…
The morphology of Mg/Al layered double hydroxides (LDHs) has been manipulated by hydrothermal treatment following the nucleation by coprecipitation or urea hydrolysis method in sodium dodecanesulfonate (SAS) aqueous solution. It is observed that the dodecanesulfonate (AS) serves as both of the interlayer anion and the…