Materials Literature
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In this work, we have developed a controlled method of functionalization of colloidal nanoparticles in solution based in using rigid molecules as linkers (Cucurbituril molecules) which allow us to obtain reproducible hot spots in gold nanoparticle dimers, due to the control of the gap size between the plasmonic struct…
This conference poster comments on the reliability of a recently published book on the topic of “Fowler-Nordheim Field Emission: Effects in Semiconductor Nanostructures”. The precise origin of important equations in the book is unclear, and one important equation checked apparently does not reduce to a Fowler-Nordheim…
Many electronic applications of carbon nanotubes crucially rely on techniques of selectively producing either semiconducting or metallic CNTs, preferably of certain chirality. Several methods of separating semiconducting and metallic CNTs are known, but most of them are not yet suitable for large-scale technological p…
An overview of different nonlinear optical phenomena occurring in nanopatterned materials is presented. In particular a discussion about second order nonlinear effects is reported, for both natural and/or artificial chiral materials.
In this study, we optimized vertically aligned carbon nanotube electron beam (C-beam) with triode structure for cathodoluminescence of Zinc Oxide (ZnO) thin films, which solution process fabricated. Efficient cathodoluminescences were observed with C-beam exposed ZnO thin films. The origin of the luminescence were con…
Chlorobenzene, o-dichlorobenzene, and 1,2,4-trichlorobenzene were used as solvents to fabricate active layers of poly(3-hexylthiophene) (P3HT) and fullerene derivatives for polymer solar cells. The fullerene derivatives employed in this study include indene-C60bisadduct (ICBA) and [6,6]-phenyl-C61-butyric acid methyl…
Emission enhancement of the organic light emitting diodes (OLEDs) by the localized surface plasmon resonance (LSPR) effect was studied. Ag nanoparticles (Ag NPs) were fabricated by vacuum deposition method and annealing. OLEDs with and without Ag NPs were fabricated to evaluate the LSPR enhancement effect. As a result…
The moirés appearing in the contact-type 3 dimensional displays are chirped by the thickness of the viewing zone forming optics (VZFO) in the displays. Due to the thickness, the patterns of the display panels for the displays are refracted on to the pattern plane of VZFO to superpose with the pattern on the plane. The…
Nonlinear insulated materials can uniform electric field distribution in non-uniform electric field. In order to inhibit the electric tree initiation and propagation inside high-voltage cross-linked polyethylene (XLPE) insulated cable, a kind of 220kV high-voltage XLPE insulated cable with new structure is designed by…
At low temperatures, the copper sulfide ore collectors ester-105 will be solidified and influence the flotation indexes. To this problem, this experiments chemically modify the ester-105, and monitor the synthesis of the modified ester-105 with the use of chromatography-mass spectrometry which is widely applied in che…
A new type of microscopy based on scanning in vacuum by a beam of charged particles transmitted through a hollow probe has been implemented. This approach provides controllable motion of spatially localized ion, electron, molecular (atomic), and soft X-ray beams and investigation of the surface in the shear force mode…
In this study, two types of transparent thin-film transistors (TFTs) were fabricated that exhibited with distinct channel designs. The first TFT contained a traditional 50-nm-thick amorphous indium gallium zinc oxide (a-IGZO) layer, and the second contained a double channel composed of composite channel layers of 10/4…
Oligoacene materials were applied as anode interfacial layers for small molecular organic photovoltaics. A sizeable enhancement in the short circuit current was observed which is attributed to an enhancement in the exciton diffusion efficiency. The application of tetracene anode interfacial layers to a synthesized ZnP…
Zinc oxide (ZnO) is a major wide band gap semiconductor material for optoelectronic and photonic devices because of its exceptional optical properties, arising from the combination of a wide band gap (~3.37 eV) and a large exciton binding energy (~60 meV). In this paper, the effects of Al doping on the optical propert…
To clarify the origin of the superior field emission characteristics of carbon coated emitters, we investigated the field enhancement at a triple junction and work functions as calculated by ab initio simulations. The electric field near the triple junction is one order of magnitude higher than at other places. Based…
A detailed balanced approach was used to model Intermediate Band (IB) Solar Cells (SCs) in which the IB is a band comprised of either Quantum-Dots (QDs) or Impurity Atoms (IAs). A model assuming identical QDs or IAs with no carrier losses was derived [1] and has a peak efficiency of 63.24% for a bandgap of 1.95 eV wit…
Atmospheric-pressure dielectric barrier discharge (DBD) cold plasma was used to prepare high performance Au/P25 catalysts (Au/P25-P). XRD and UV-Vis DRS spectra for Au/P25 catalysts were performed. The results indicated that the size of Au nanoparticles in Au/P25-P was smaller than that prepared by conventional therma…
In order to prevent DC link voltage pump during braking, a paralleled release circuit composed of chopper and resistor is often employed. As a result of energy waste on the resistor, the efficiency of the motor drive system is low in the case of frequent braking. To improve the efficiency, an energy-saving scheme of m…
This work compares the DC and RF performance for Single Gate(SG) field plated AlGaN/GaN High Electron Mobility Transistor (HEMT) with a Dual Gate(DG) field plated High Electron Mobility Transistor. The maximum drain current obtained for AlGaN/GaN DG field plated HEMT is 1057mA/mm at Vgs=0V and Vds=10V, which is of 396…
Consulting Editor Kenneth J A Brookes reviews three of the presentations at the Tungsten, Refractory and Hard Materials Conference.