Materials Literature
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Twenty years after Dr. Holonyak's invention, a compact disc (CD) was introduced to the market in 1982. A laser diode is always in the heart of optical storage systems and a variety of other industrial applications. Innovations in laser diode technologies have brought optical storage evolutions from CD to digital versa…
We report a detailed experimental and theoretical study of the electronic structure of Mo 1− x Re x random alloys. We have measured electronic band dispersions for clean and hydrogen-covered Mo 1− x Re x (110) with x = 0–0.25 using angle-resolved photoemission spectroscopy. Our results suggest that the bulk and most s…
ABSTRACT Octyl gallate (OG), dodecyl gallate (DG), and hexadecyl gallate (HG) were synthesized and characterized by Fourier transform infrared (FTIR) and NMR, and their thermal stability was measured by thermogravimetric analysis (TGA). The antioxidant effect of these derivatives in polypropylene (PP) was measured by…
This letter reports, for the first time, heterogeneous integration of bismuth telluride (Bi2Te3) and antimony telluride (Sb2Te3) thin-film-based thermoelectric (TE) devices on a CMOS substrate. The TE films are deposited on a silicon-on-insulator substrate with FinFETs (3-D multiple gate field effect transistors) via…
This paper reports a new method for dissolving cellulose based on phosphonium ionic liquids (PILs). The method has the potential to produce novel cellulosic and cellulose composite materials in an environmentally friendly way. PILs with melting points less than 100 °C and mixtures of dimethylformamide and PILs were us…
Nanoparticles (NPs) are attractive materials owing to their physical and electrochemical properties, which make them extremely useful in diagnostic applications. Photon upconversion is the phenomenon where high-energy photons are emitted upon excitation of low-energy photons. Nucleic acids detection based on upconvers…
Creep, creep recovery and inverse stress relaxation behaviors of carbon nanotube yarns that consisted of 1-, 30-, and 100-yarn(s) were characterized. Primary and secondary creep stages were observed over the duration of 336 h. The primary creep stage lasted for about 4 h at an applied load equal to 75% of the ultimate…
It is widely recognized that nonwoven basis weight uniformity affects various properties of nonwovens, including appearance, physical properties, or mechanical properties. However, it is one of the nonwoven characteristics that is most difficult to characterize. This paper reports on the methodology based on the well-…
The present study investigates the systematic changes observed in work function (WF) of Au-nanoparticles supported on TiO2 as a result of variation in surface plasmon resonance induced absorption intensity. Synthesis of hybrid Au-TiO2 nanoparticles was carried out by sol-gel process followed by photoreduction of gold…
Molecular dynamics simulations are used to compute diffusion coefficients for O2 molecules in polydimethylsiloxane (PDMS) and end-linked PDMS networks. The PDMS chains and penetrants are modelled using a hybrid interatomic potential which treats the Si and O atoms along the chain backbone explicitly while coarse-grain…
A series of ordered mesoporous carbon materials (OMCs) possessing well-ordered nanoporosity with different mesopore structures were synthesized by the template-synthesis route. Two different pore strucutes (2-dimensional hexagonal and 3-dimensional cubic structures) and two different framework-configurations (rod-type…
The shorter, the more dispersible: An iterative, emulsion-based shortening technique has been used to reduce the length of single-walled carbon nanotubes (SWNTs) to the same order of magnitude as their diameter (ca. 1 nm), thus achieving an effectively "zero-dimensional" structure with improved dispersibility and, aft…
The rotation of meso-aryl groups in porphyrins depends on the degree of macrocyclic distortion and is also influenced by the surrounding temperature. Dynamic NMR methods and crystal structures of series of nonplanar metalloporphyrins reveal that macrocyclic distortion lowers the rotational barrier by weakening the non…
Soluble inorganic nanocrystals offer a potential route to the fabrication of all-inorganic devices using solution deposition techniques. Spray processing offers several advantages over the more common spin- and dip-coating procedures, including reduced material loss during fabrication, higher sample throughput, and de…
The protruding oxophilic central metal ion of Zr(IV) porphyrinoids facilitates axial coordination to the oxygen bearing functional groups on graphene oxide (GO) surfaces to result in new supramolecular photonic materials with high dye loading especially on edges and large defects. The reaction proceeds at room tempera…
ABSTRACT Adsorption of N2O molecule by using density functional theory calculations at the B3LYP/6–31G* level onto pristine and Si‐doped B12N12 nanocage in terms of energetic, geometric, and electronic properties was investigated. The results of calculations showed that the N2O molecule is physically adsorbed on the p…
Elektronische und magnetische Eigenschaften der Komplexe [Co(terpy)Cl2] (1), [Co(terpy)(NCS)2] (2) und [Co(terpy)2(NCS)2] (3) wurden untersucht. Die Koordinationsumgebung um CoII in 1 und 2 bedingt das Vorliegen als High-Spin-Komplex bei tiefen Temperaturen und Einzelmolekülmagnet-Verhalten. Eine Veränderung des Ligan…
The relaxation dynamics and charge-transport mechanisms of different benzene tetracarboxylic acid (BTCA)-doped polyaniline (PANI) nanostructures had been probed by the electric ac response of the samples from 42 Hz up to 5 MHz within the temperature range 133–303 K. The experimental results reveal that the overall fre…
Rare-earth (${\rm RE}={\rm Sm}$, Pr, Tb, Tm) doped ternary sulfides having the general formula${\rm KLn} _{0.995}{\rm RE}_{0.005} {\rm S} _{2}$(${\rm Ln}={\rm La}$, Gd, Lu) and undoped${\rm KLnS} _{2}$were synthesized in the form of crystalline hexagonal platelets by a chemical reaction in an electric resistance furna…
ABSTRACT Biodegradable poly(propylene carbonate, PPC) is a typical noncrystalline polymer from the copolymerization of carbon dioxide (CO2) with propylene oxide (PO). But it is easy to be degraded to propylene carbonate (PC) via backbiting route during heat process (above 170°C), which limits its application. This wor…