Materials Literature
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In this work, we studied the anisotropic dissolution process of geogenic calcite substrates in aqueous solution in the presence of ammonium iodide and ammonium sulfate. Arrays of calcite micropyramids elongated along the c axis of calcite and quadrangular and hexagonal transverse cross sections were obtained for the f…
Protective clothing is important to work and for survival for firefighters in extreme environments, thermo-physical properties of which are influenced by the moisture. Moisture transfer and condensation effects on heat transfer process within the clothing were analyzed in this paper. Thermal manikin experiments were c…
An unprecedented one-pot procedure employing a cyclopentadienyl functionalized RAFT agent allowed the grafting of poly(carboxybetaine acrylamide) - a highly functional and biocompatible polymer - from the surface of pristine SWCNTs. The pendant carboxylic acid groups of the surface grafted polymer were further conjuga…
A prerequisite for in vivo fluorescence imaging is the safety of fluorescent probes. Among all fluorescent probes, fluorescent proteins (FPs) might be the safest ones, which have been widely used in biological sciences at the gene level. But FPs have not been used in vivo in the purified form yet due to the instabilit…
We investigate the absorption of a pure gas into a liquid in laminar flow past a superhydrophobic surface consisting of alternating solid walls and micro-bubbles. We experimentally measure and numerically estimate the dynamic mass transfer of gas absorption at stable gas–liquid interfaces for short contacting times. W…
Synthesis of metal nanoparticles (NPs) is in the limelight in modern nanotechnology. In this present study, bimetallic Au/Pd NP/Pichia pastoris composites were successfully fabricated through a one-pot microbial reduction of aqueous HAuCl4 and PdCl2 in the presence of H2 as an electron donor. Interestingly, flower-lik…
With a transition metal (TM) complex or a protonated organic amine as a structure-directing agent (SDA), five novel Hg-Sb-Se compounds with the architectures ranging from one-dimensional (1D) ribbon, two-dimensional (2D) layer, to three-dimensional (3D) open-framework have been solvothermally synthesized and structura…
Two benzoporphyrin derivatives substituted with long side chains at the bay positions have been synthesized through a facile route. They were confirmed to show two separate columnar phases upon cooling, i.e., a hexagonal columnar phase and a rectangular columnar phase. In particular, the temperature dependence of the…
The configuration of graphene nano-ribbon (GNR) assembly on carbon nanotube (CNT) and sphere is studied through theoretical modeling and molecular simulation. The GNR can spontaneously wind onto the CNT due to van der Waals (vdW) interaction and form two basic configurations: helix and scroll. The final configuration…
Manipulation of neuronal growth has important applications in regenerative biomedicine and bioengineering. This study demonstrates the use of silver nanoparticles as nanotopographical cues to promote neurite outgrowth in vitro. We find that the silver nanoparticles function as favorable anchoring sites and that the gr…
Conjugated thiophene azomethines with different degrees of polymerization were prepared. Both the molecular weights and polydispersity indices were consistent with step-growth polymerization instead of the expected dynamic component exchange by transimination. It was found that the absorbance of the neutral compounds…
Fullerene C60whiskers (FWs) doped with polyaniline emeraldine base (PANI-EB) were synthesized by mixing PANI-EB/N-methyl pyrrolidone (NMP) colloid and FWs suspension based on the nature of the electron acceptor of C60and electron donor of PANI-EB. Scanning electron microscopy (SEM), Fourier transform infrared (FT-IR),…
Thin films of transition metals oxides are studied and comparison is made for two types of mixed precursors, first containing only hexacarbonyls, and second containing tungsten hexacarbonyl and vanadyl acetylacetonate (Vanadium (III) acetylacetonate). The best electrochromic material is WO3, although when deposited by…
Quantum dots (QDs) show great promise for use as drug delivery carriers and fluorescent markers, with potential applications in, for example, pulmonary drug delivery and lung imaging, respectively. Nevertheless, few adequate analytical techniques are available for mapping or determining QDs in tissue samples. In this…
The effects of electron and hole doping on the magnetic properties of hydrogenated and fluorinated graphene structures are theoretically investigated by additional charge mimic. The studied hydrogenated and fluorinated graphene with different electronic structures display different relations between magnetism and char…
A new organic charge transfer molecular complex salt of o-toluidinium picrate (OTP) was synthesised and the single crystals were grown by the slow solvent evaporation solution growth technique using methanol as a solvent at room temperature. Formation of the new crystal has been confirmed by single crystal X-ray diffr…
We report the synthesis of functionalized polycarbonates and polyesters employing stannous(II) trifluoromethane sulfonate [Sn(OTf)2] in homo and copolymerizations with monomers of the valerolactone family such as valerolactone and α-allyl-valerolactone using ring-opening polymerization (ROP) techniques and 5-methyl-5-…
Here we present CVD growth of graphene on Ni and investigate the growth mechanism using isotopically labeled (13)C-ethanol as the precursor. Results show that during low-pressure alcohol catalytic CVD (LP-ACCVD), a growth time of less than 30 s yields graphene films with high surface coverage (>80%). Moreover, when is…
The effects of electrolyte species and their combination during the two-step anodization of anodic oxide films formed in various ammonium salts solutions on aluminum in terms of the crystallinity and dielectric properties for use as an electrolytic capacitor were investigated. The aluminum substrates were pretreated b…
Kinetic studies of two-phase transformations i.e. glass transition and crystallization for GexSe70Sb30-x (x = 5, 10, 15, 20) glasses have been performed using differential scanning calorimetry (DSC) at different heating rates under non-isothermal condition. The glass transition and crystallization regions have been in…