Materials Literature
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Two nonlinear optical fluoride carbonate crystals (Na 8 Lu 2 (CO 3 ) 6 F 2 and Na 3 Lu(CO 3 ) 2 F 2 ) have been synthesized under subcritical hydrothermal condition. Both crystals crystallize in the noncentrosymmetric space group Cc (No. 9). The structure of Na 8 Lu 2 (CO 3 ) 6 F 2 with high density of [CO 3 ] groups…
A redistribution of Cr atoms related to a phase decomposition (PD) caused by an isothermal annealing at 415 C in a 15.15 at%Cr Fe-Cr alloy was studied in an ex-situ way by the conversion electrons Mössbauer spectroscopy. Analysis of the spectra in terms of a two-shell model enabled determination of probabilities of 17…
Hydrophilic nanotubes formed by lipid molecules have potential applications as platforms for chemical or biological events occurring in an attolitre volume inside a hollow cylinder. Here, we have integrated the lipid nanotubes (LNTs) by applying an AC electric field via plug-in electrode needles placed above a substra…
Structural and functional information encoded in DNA combined with unique properties of nanomaterials could be of use for the construction of novel biocomputational circuits and intelligent biomedical nanodevices. However, at present their practical applications are still limited by either low reproducibility of fabri…
Single crystal of YCoGa5 has been grown via Ga self-flux. In this paper, we report the single crystal growth, crystallographic parameters, resistivity, heat capacity, and band structure results of YCoGa5. YCoGa5 accommodates the HoCoGa5 type structure (space group P4/mmm (No. 123), Z = 1, a = 4.2131(6) A, c = 6.7929(1…
Vanadium pentoxide (V2O5) deposited on porous multiwalled carbon nanotube (MWCNT) buckypaper using supercritical fluid CO2(scCO2) deposition shows excellent performance for electrochemical capacitors. However, the low weight loading of V2O5 is one of the main problems. In this paper, design of experiments and response…
Light scattering observation of nematic director fluctuations in confined geometries can be used to obtain interaction parameters of liquid crystals with surfaces. We present the basics of the method and some examples of the results in planar and cylindrical geometries. These results were obtained after neglecting the…
In the temperature dependence of magnetization, the Heusler compound Ru${}_{1.9}$Fe${}_{0.1}$CrSi exhibits a peak at a temperature which is defined as ${T}_{N}^{*}$. Below that temperature strong irreversibility occurs, the onset temperature of which is defined as ${T}_{g}$. However, no evidence of long-range order ha…
Carbon nanotube structures correspond to the vibrational frequencies and modes of CNTs. In this study, the vibrational frequencies and the Raman RBM (radial breathing mode) of multi-walled carbon nanotubes (MWCNTs), and carbon nanotubes (CNTs) embedded in elastic medium are simulated based on a continuum mechanics. Ac…
This paper compares material issues for cermet and graphite fuel elements. In particular, two issues in NTP fuel element performance are considered here: ductile to brittle transition in relation to crack propagation, and orificing individual coolant channels in fuel elements. Their relevance to fuel element performan…
This investigation reports the first application of admicellar polymerization to cellulose nanofibers in the form of bacterial cellulose, microfibrillated cellulose, and cellulose nanowhiskers using styrene and ethyl acrylate. The success of this physical sleeving was assessed by SEM, FTIR, and contact angle measureme…
Ultrafast optical responses were investigated using a fs laser system on a layered perovskite-type cobalt oxide, La1.5Sr0.5CoO4 with a checkerboard-type charge ordering. To investigate the spatial variation of the photoexcited state, we measured the transient changes of three independent optical quantities, i.e., tran…
Theoretical calculations are presented on a new hypothetical 3,4-connected carbon net (called squaroglitter) incorporating 1,4 cyclohexadiene units. The structure has tetragonal space group P4/mmm (No. 123) symmetry. The optimized geometry shows normal distances, except for some elongated bonds in the cyclobutane ring…
We have developed a general approach to perform direct measurements of the pretilt angles from 0° to 75° in hybrid-aligned nematic (HAN) liquid-crystal cells whose cell gaps can also be accurately determined with the help of known pretilt angles. In this paper, we have used a Zeeman laser system to measure the angular…
Ba(Fe 1/2 Nb 1/2 )O 3 thin films were grown on Pt/TiO 2 /SiO 2 /Si substrates with pulsed laser deposition (PLD) at temperatures ranging from 823 to 923 K with the varied ambient oxygen pressure. X-ray diffraction (XRD) data confirmed the single phase of polycrystalline Ba(Fe 1/2 Nb 1/2 )O 3 thin films. The effects of…
The Faraday rotation in metallic nanoparticles is considered based on a quantum model for the dielectric function ϵ(ω) in the presence of a DC magnetic field B. We focus on effects in ϵ(ω) due to interband transitions (IBTs), which are important in the blue and ultraviolet for noble metals used in plasmonics. The diel…
The high pressure behavior of multiferroic BiMn2O5 has been investigated using powder x-ray diffraction and Raman scattering techniques as well as density functional theory based first principles calculations. Our investigations show a reversible iso-structural phase transition in BiMn2O5 above 10 GPa. The compressibi…
Proven state-of–practice “heritage” thermoelectric (TE) materials used in extremely reliable radioisotope power systems (RPS) exhibit only modest dimensionless figure of merit (ZT) values, resulting in relatively system-level conversion efficiencies of 6 to 6.5%. These heritage materials have been known since the late…
Electrochemical impedance spectroscopy (EIS) and SEM‐EDX observations were used to evaluate the inhibiting effect of four thiadiazole derivatives, i.e. 2‐mercapto‐5‐amino‐1,3,4‐thiadiazole (MAT), 2‐mercapto‐5‐methyl‐1,3,4‐thiadiazole (MMeT), 2‐mercapto‐5‐acetylamino‐1,3,4‐thiadiazole (MAcAT) and 2‐mercapto‐5‐phenylami…
Abstract The electronic structure of [Ru(bpy) 2 (OQN)] + (where bpy = 2,2′‐bipyridine and OQN = 8‐oxyquinolate) has been revisited using a complimentary suite of theoretical (DFT/TD‐DFT), electrochemical (cyclic voltammetry) and spectroscopic techniques (UV/Vis/NIR absorption, EPR spectroscopy). Through functionalizat…