Materials Literature
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A universal building block for the convergent synthesis of a wide variety of different T-shaped ternary amphiphiles was developed and used for the synthesis of a series of new liquid-crystalline materials composed of a rigid biphenyl core with polar glycerol groups at both ends and linear or branched alkyl chains in a…
Nanotechnology is a novel emerging technology that allows the manipulation of materials at the scale comparable to the size of a single molecule (i.e., < 100 nm). There have been many new developments in this technology, resulting in complex exposure and health risk implications. Nanotechnology offers major benefits t…
We report the investigation of structure and magnetic properties of full-Heusler alloy Co2FeAl0.5Si0.5 (CFAS) thin films grown on MgO-buffered MgO (001) substrates through magnetron sputtering. It was found that single-crystal CFAS thin films with high degree of L21 ordering and sufficiently flat surface could be obta…
The occurrence of deformation twinning in face-centered-cubic (fcc) crystals with medium to high stacking fault energy is normally very difficult. Through specially designing the orientation of Cu single crystal, the authors do not only observe profuse nanoscale deformation twins with a tower shape originating from gr…
Abstract Porous silicon antireflection coatings were generated on fully processed screen‐printed monocrystalline silicon solar cells using metal‐assisted chemical etching in HF:H 2 O 2 :ethanol. In this method, interaction of the HF acid with the cell front grid contact results in the dissolution of silver nanoparticl…
Phase change memory (PCM) cell with tungsten trioxide (WO3) bottom heating layer is investigated. The crystalline WO3 heating layer promotes the temperature rise in Ge2Sb2Te5 layer that causes the reduction in reset voltage compared to a conventional PCM cell. The theoretical thermal simulation and calculation for res…
We have demonstrated a stimulated photoluminescence (PL) at 694 and 692nm whose emission peak has a Lorentzian shape with a full width at half maximum of 0.5–0.6nm. This stimulated emission comes from the nanostructures on porous silicon oxidized fabricated by irradiation and annealing treatment. Controlling the time…
In this paper, the current image of a single CuO nanowire was measured by conductive atomic force microscopy (C-AFM), which showed stripy patterns along the length of the nanowire. The I-V properties and Kelvin probe force microscopy measurements indicated that in the current image, the current varied with the barrier…
In this study, polarized-Raman scattering measurements of an individual ZnO nanorod were carried out by using a confocal microscope together with a high-resolution piezoelectric stage. A predominant A1 (TO) mode at 378cm−1 in the parallel polarization (E∥) configuration and a predominant E2 (high) mode at 438cm−1 in t…
Pb(ZrxTi1−x)O3 (PZT) thin films were coated on Pt∕Ti∕SiO2∕Si substrates by the sol-gel method and then crystallized by using the magnetic field of 2.45GHz microwave irradiation. The elevated temperature generated by microwave irradiation used to obtain the perovskite phase was only 450°C, which is significantly lower…
We demonstrate a polarization independent negative-index metamaterial (NIM) at microwave frequencies. Transmission measurements and simulations predict a left-handed transmission band with negative permittivity and negative permeability. A negative-index is verified by using the retrieval procedure. Effective paramete…
Abstract Novel technologies for studying biological events are of great interest and luminescent conjugated polymers (LCPs), a material normally used in organic electronics, have proven useful for the detection of a wide range of disease‐related biological processes. The conformation‐sensitive optical properties of LC…
n-ZnO NR/p-Si and n-ZnO NR/p-PEDOT/PSS heterojunction light-emitting diodes (LEDs) have been fabricated with ZnO nanorods (NRs) grown by a low-temperature method as well as by employing pulsed laser deposition (PLD). The low-temperature method involves growing the ZnO nanorods by the reaction of water with zinc metal.…
We report the ordering of carbon nanostructures under energetic ion irradiation at low fluence (&lt;5×1011ions∕cm2). Fullerene thin films and multiwalled carbon nanotube (MWCNT) films were irradiated with 200MeV Au and 60MeV Ni ions at different ion fluences, respectively. The changes in the irradiated films have…
We fabricated high quality epitaxial BiAlO3 thin films that exhibited a relatively high c∕a ratio of about 1.05 with a pseudotetragonal structure. On the atomic force microscope morphology of the BiAlO3 thin film, we observed large terraces with a width of about 1000Å and terrace heights of nearly the same to one latt…
Abstract Silver (Ag) particle embedded granular activated carbon (GAC) was made for the first time to assess its ability in inhibiting the growth of Escherichia coli ( E. coli ), a water‐borne bacterial pathogen. Ag‐GAC was made by impregnating GAC with AgNO 3 and then reducing it to metallic Ag. Plate assay showed sl…
We describe a new synthesis route for fluorescent superparamagnetic iron oxide nanoparticles (FL SPIONs) and the self-assembled complex formed using FL SPION and protamine sulfate for cell labeling. This synthesis route involves the conjugation of the FDA-approved dextran-coated ferumoxides with fluorescent dextran. T…
Polycrystalline lead-free piezoelectric [Bi0.5(Na0.7K0.2Li0.1)0.5]TiO3 (BNKLT) thin films were grown on Pt∕Ti∕SiO2∕Si substrates using pulsed laser deposition (PLD). In this letter, we report the ferroelectric properties and piezoresponse of the PLD-produced BNKLT thin films. X-ray diffraction characterization reveale…
Thin NiO films are grown at 300°C on Si (100) using atomic layer deposition. The dependence of annealing temperature on the optical properties of NiO films has been investigated using spectroscopic ellipsometry in the spectral region of 1.24–5.05eV. It is found that the refractive index and thickness of NiO films are…
Polycrystalline Ba8Ga16Ge30 clathrates with a systematic variation in the Ga:Ge stoichiometry were prepared to investigate the thermoelectric properties as a function of carrier concentration. Their corresponding transport properties were evaluated to identify the optimal carrier concentration for high temperature the…