Materials Literature
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Glycine acts as a neurotransmitter in the Central Nervous System (CNS) and plays a vital role in processing of motor and sensory information that control movement, vision, and audition. Glycine detection and imaging can lead to a greater understanding of how this information is processed in the CNS. Here, we present a…
There is significantly abundant portion of waste agricultural materials in the world serving as environmental challenge, however, they could be converted into useful value added products like activated carbon. Coconut shell based carbons were synthesized using physical activation by CO 2 and chemical activation with p…
Derived from renewable resources, Poly (lactic) acid (PLA) exhibits good mechanical properties comparable with conventional polyolefins. However, major obstacle in PLA which may limit its application is due to brittleness. Thus, PLA requires toughening to overcome the weakness. In this study, PLA was blended with diff…
Recent development of tissue engineering has been emphasized on tissue regeneration and repairing in order to solve the limitation of organ and tissue transplantation issues. Biomaterial scaffold, which plays an important role in this development, not only provides a promising alternative in order to improve the effic…
We report the surface conduction of a BaTiO3 thin film using electric double layer transistor (EDLT) structure. A transistor operation was observed at 220 K with an on/off ratio exceeding 105, demonstrating that ionic liquid gating is effective to induce carriers at the surface of ferroelectric materials. Temperature…
The electronic structure of polymer-derived amorphous silicon carbide ceramics was studied by combining measurements of temperature-dependent conductivity and optical absorption. By comparing the experimental results to theoretical models, electronic structure was constructed for a carbon-rich amorphous silicon carbid…
Copper nanowire/polyamide 6 (denoted as nano-Cu/PA6) nanocomposites were readily prepared via in situ polymerization in reducing atmosphere. The microstructure, phase composition, and chemical state of typical elements of as-prepared nano-Cu/PA6 nanocomposites were analyzed by transmission electron microscopy, and X-r…
Pulsed laser deposition was employed to deposit epitaxial Ge2Sb2Te5-layers (GST) on (100) oriented KCl-substrates. XRD-measurements show a process temperature window for epitaxial growth of the cubic phase between 200 and 300 °C. Below 250 °C (111) oriented GST dominates the growth process and above 250 °C the (100) o…
A theoretical study is presented on complex pseudoternary Bi-doped $$\hbox{Mg}_{2}\hbox{Si}_{1-x-y}\hbox{Sn}_{x}\hbox{Ge}_{y}$$ materials, which have recently been revealed to reach high thermoelectric figures of merit (ZT) of ∼1.4. Morphological characterization by scanning electron microscopy and energy-dispersive x…
Amyloid formation is now considered a universal and intrinsic property of all proteins, irrespective of their sequences. Therefore, it is interesting to see whether random copolymers of amino acids can also form amyloid aggregates. Here we use a copolymer of 4 amino acids, mimicking the clinically used drug Glatiramer…
Plasma-functionalized multi-walled carbon nanotubes (p-MWCNTs) are used to fabricate poly (methyl methacrylate) (PMMA) based nanocomposites with different p-MWCNTs loadings. First, MWCNTs are functionalized by He-dielectric barrier discharge plasma followed by an exposure to NH3 and then the PMMA/p-MWCNTs nanocomposit…
Poly[1-(cholesteryloxyhexyloxy)ethylene] (PHET) and poly[1-(cholesteryloxycarbonyl-hexyloxy)ethylene] (PHES) were prepared by reacting poly(vinyl alcohol) with cholesteryloxyhexyloxy bromides (CHB) or cholesteryloxycarbonylhexyloxy bromides (CEHB), and their thermal and optical properties were investigated. PHET and P…
Strong emission current of 500 mA/cm2 was observed in sol-gel derived antiferroelectric (AFE) PLZT (2/95/5) thick films at a trigger voltage of 150 V and a dc extraction voltage of 50 V. The PLZT emitters were found to be fatigue-free up to 106 emission cycles. Electron emission from our samples is believed to origina…
Effects of interfacial and internal dislocations on formation of vortex domain structure in ferroelectric nanodots have been investigated. Due to the highly inhomogeneous strain field near the dislocation core, dislocations are found to play important roles in vortex nucleation stage and can significantly affect vorte…
Considering intrinsic properties of conjugated polyfluorenes and special functions of porous polymers, synthesis of fluorinated porous poly(spirobifluorene) via direct C−H arylation polycondensation is explored. Owing to the contorted structure and cross-linking nature, the obtained polymer FPSBF shows permanent poros…
A curing agent Thiourea-diethylenetriamine (TU-DETA) was successfully prepared with its structure characterized by Fourier transform infrared spectrum and nuclear magnetic resonance (13C-NMR spectrum). The curing agent TU-DETA contained incompletely reacted material diethylenetriamine (DETA) and the polymerization deg…
The controllable heat behavior, including heat generation and dissipation, is one of the most important physical problems of nanoscale phase-change memory (PCM). A method based on heat accumulation effect to control heat behavior by synthetically modulating the three parameters of applied double pulses is proposed to…
The synthesis, crystal structure, and magnetic properties (from a combined experimental and First-Principles Bottom-Up theoretical study) of the new compound catena-dichloro(2-Cl-3Mpy)copper(II), 1, [2-Cl-3Mpy=2-chloro-3-methylpyridine] are described and rationalized. Crystals of 1 present well isolated magnetic 1D ch…
Dicumyl peroxide (DCP) was introduced into thermoplastic polyurethane (TPU) toughened poly(L-lactide) (PLLA) blends. The results showed that the presence of DCP at relatively high concentration (0.2–0.5 wt.%) not only resulted in the homogeneous distribution of TPU particles with largely decreased particle size but al…
We report on an interferometric method developed for ultra broadband (from λ=0.65 μm to λ=1.7 μm) phase measurements on metasurfaces in transmission and reflection. Due to a unique performance of our method in terms of the accessible spectral range, accuracy (±0.02 rad), and flexibility with respect to the sample arra…