Materials Literature
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Abstract This paper reviews the characterization of the base strength and impact of water absorption on biodegradable, namely, soy protein-based plastics prepared by different methods. The initial approach included using different quantities of soy hydrolysate plasticized with glycerol, which is widely known for its p…
Perovskite heteroepitaxy was investigated under various conditions using laser molecular beam epitaxy. Well-controlled BaTiO3∕SrTiO3 heterostructure was studied with in situ reflective high energy electron diffraction and ex situ atomic force microscopy, x-ray diffraction, and transmission electron microscopy. The gro…
In this work we report the investigation of the dynamics of maleic anhydride grafted polypropylene (PPgMA) and PPgMA-based nanocomposites by means of dielectric relaxation spectroscopy (DRS) and dynamic mechanical thermal analysis (DMTA). After characterization of neat PPgMA, we study the effect of organically modifie…
The effect of carbon black loading and type on the properties of ferrite filled natural rubber (NR) composites was investigated. The carbon black loading used was from 0 to 50 phr and ferrite loading was fixed at 80 phr. Carbon black grades N330 and N660 were used in this work. The scorch time decreased with the addit…
Nanocubic boron nitride/nanodiamond (N-cBN/ND) multilayer structures with each alternating layer being ∼100nm thick have been prepared by magnetron sputter and microwave plasma enhanced chemical vapor depositions. These multilayers exhibit remarkable properties, in particular, the mechanical properties. The multilayer…
Abstract Blends of high density polyethylene (HDPE) and biodegradable polymers – polylactic acid, PLA, poly(∊-caprolactone), PCL and Mater-Bi® (thermoplastic starch (TPS) with PLA or PCL) – were prepared in a co-rotating twin-screw extruder, together with polyethylene modified with maleic anhydride (PE-g-MA) used as c…
Abstract The two compounds [Fe II (pyridine) 2 (N 3 ) 2 (H 2 O)] ( 1 ) and [Fe II (4‐acetylpyridine) 2 (N 3 ) 2 ] ( 2 ) were prepared. The X‐ray crystal structures show end‐to‐end (EE) bridging azides in both cases with a 1D Fe–NNN–Fe chain for 1 and a 2D Fe–NNN–Fe net in 2 . Both compounds show similar magnetic behav…
Abstract Nanostructured transparent glass‐ceramics with composition of 95SiO 2 –5LaF 3 doped with 0.1 mol% of Tm 3+ or co‐doped with 0.1 mol% of Tm 3+ and 0.3 mol% of Yb 3+ were synthesized by thermal treatment of precursor sol–gel derived glasses. A comparative luminescence analysis in terms of different temperatures…
Abstract Tapioca starch (TS), poly (lactic acid) (PLA), and clay nanocomposite foams, with three clays (Cloisite 30B, Na + , and 20A), were prepared by melt-intercalation method. The structural, thermal, physical and mechanical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM…
The phase transformation of a metastable system occurs when islands of a second stable phase form and grow. The growth velocity of the islands controls the kinetics of the phase transformation. In this work we consider the amorphous-to-crystalline transformation in silicon as the prototype of a solid-to-solid transfor…
Analytical expressions for the thermal diffusivity and effusivity of thin layers starting from the time-domain thermoreflectance are proposed. These relations rest on the analytical solution of one-dimensional heat transfer in the medium using integral transforms. For noncapped layers, asymptotic behaviors of the impu…
We have investigated chemical sensors by combining silicon-on-insulator complementary-metal-oxide-semiconducting microtechnology with nanotechnology. The sensing materials were single-walled carbon nanotubes and poly(3,3‴-dialkyl-quarterthiophone). The devices containing only nanotubes or pure polymer provided minimal…
A number of aqueous polyurethane dispersions based on polytetramethylene glycol (PTMG), 1,4-butanediol (1,4-BDO), dimethylol propionic acid (DMPA) and diisocyanates of differing structures such as toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), isophorone diisocyanate (IPDI), and dicyclohexylmethane di…
Broadening of the angular response of two-dimensional (2D) guided mode resonant spectral filters at oblique incidence is investigated. Coupling into multiple fundamental guided resonant modes having the same propagation constant but propagating in different planes (inherent multiple-plane diffraction by 2D gratings) i…
The determination of the coercive voltage from the height of domain-switching current plateau in ferroelectric thin films provides the liability to estimate the coercive-voltage shift with imprint time shortly on the order of polarization-reversal time. The voltage shift exhibits a linear time dependence in a logarith…
Coimplantation of Zn and O ions into a single crystalline MgO and subsequent thermal annealing were applied in the synthesis of ZnO nanocrystals. Electron microscopy showed that rocksalt instead of wurtzite ZnO stabilizes for relatively large nanocrystals up to ∼15nm, resulting from its small lattice mismatch with MgO…
Ionic perylenemonoimide (see figure) forms crystals that exhibit dichroic absorption and anisotropic fluorescence emission in the visible light region. The self-organization of this compound on a micropatterned polymer template leads to the formation of anisotropic fluorescent materials in micropatterns.
To develop biomaterials for tissue engineering, a silk-like protein inspired by mussel-adhesive proteins (MAPs) was designed and prepared. The primary structure of this silk-like protein is designed as TS[AKPSYPPTYKAS (GAGAGS)(3)](10) by combining the sequences (GAGAGS)(3), the crystalline region of Bombyx mori silk f…
Using $\mathrm{O}\phantom{\rule{0.2em}{0ex}}1s$ x-ray photoelectron and Mg $K{L}_{23}{L}_{23}$ Auger spectroscopy, we demonstrate that monolayer $\mathrm{Mg}\mathrm{O}(100)∕\mathrm{Ag}(100)$ exposed at $300\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ to ${\mathrm{H}}_{2}\mathrm{O}$ vapor pressure of ${10}^{\ensuremath{-}8}\…
Abstract High power electronics are today a real challenge for large band gap materials. Devices as simple as switches have to work at ever higher powers and demand material with exceptional properties: in particular, a high breakdown voltage (at least a few 10 6 V/cm), a high mobility‐lifetime product (at least 10 –3…