Advanced Materials for Engineering Applications – Page 4

Large scale Manufacturing of Calcium Phosphate Nanoparticles for Medical Applications

Panagiotou T., Delphi Scientific, US

Calcium phosphate (CaP) nanoparticles find medical applications in a number of areas, including delivery of nucleic acid therapeutics and calcium-based tissue engineering. CaP is well-studied biocompatible, bioactive, and bioabsorbable material and is used extensively in [...]

Flame-based Aerosol Synthesis of Metal Nanoparticles and Supported-Metal Nanostructures

Liu S., Swihart M.T., University at Buffalo (SUNY), US

Commercialization of inorganic nanomaterials is often limited by scale-up. Our group developed a unique flame- based aerosol process for scalable, continuous, and low-cost production of various nanomaterials, the High Temperature Reducing Jet (HTRJ) Reactor. Over [...]

On the Ideal Diamagnetism of Composite Graphene and Graphite Nanostructures

Rzhevskii A., Chahid S., Dulal R., Teknowijoyo S., Gulian A., Thermo Fisher Scientific, US

Graphite and its derivatives such as graphene have demonstrated many unique properties that are still un- der intense exploration. In particular, these properties are important for microelectronics applications. In our case it was ideal diamagnetism [...]

Impact of Coal-Borne Impurities on Coal-Derived Graphene Quantum Dots

Azenkeng A., Stanislowski N.E., Laumb J.D., University of North Dakota Energy & Environmental Research Center, US

The impact of coal-borne impurities on coal-derived graphene quantum dots (GQDs) has been investigated on four U.S. coal ranks: lignite, subbituminous, bituminous, and anthracite. Preliminary characterization of the GQDs has been done using ultraviolet-visible spectroscopy [...]

Analysis of Lag Phenomena and Current Collapse in Field-Plate AlGaN/GaN HEMTs with High-k Passivation Layer

Komoto K., Saito Y., Horio K., Shibaura Institute of Technology, JP

In AlGaN/GaN HEMTs, slow current transients are often observed even if the gate voltage or the drain voltage is changed abruptly. This is called gate lag or drain lag, and problematic in circuits applications. The [...]

Analysis of High Average Breakdown Fields between Gate and Drain in AlGaN/GaN HEMTs with High-k Passivation Layer

Tomita R., Ueda S., Kawada Y., Horio K., Shibaura Institute of Technology, JP

AlGaN/GaN HEMTs are now receiving great interest for application to high-power microwave devices and high power switching devices. To improve the breakdown voltage, the introduction of field plate is shown to be effective, but it [...]

Enhanced Corrosion Detection By Means of Multispectral Imaging and Postprocessing Techniques

Giegerich W.V., Fedorishin D.C., Forte III L., Christie L., Schneider P.J., Oh K.W., University at Buffalo, US

This research focuses on the implementation of an enhanced corrosion detection algorithm using multispectral imaging techniques and post-processing image filters. Utilizing various combinations of light filters with image enhancement software, we are able to increase [...]

Vascular Test Phantom Metrology For Use In Photoacoustic Applications

Christie L.B., Schneider P., Oh K.W., University at Buffalo, US

The field of photoacoustics is increasing as new discoveries are being made showing potential for a system that is capable of higher resolution medical imaging, noninvasive vital monitoring, and cancer diagnostics. This research focuses on [...]

Advanced Materials

A study of the interaction between nanoparticles and light: an experimental proof and visualisation of Mie theory in polymer composites

Wrigglesworth E.G., Johnston J.H., Victoria University of Wellington, NZ

An experimental proof of Mie theory has been developed using gold nanoparticles. The relationship between nanoparticle size and the ratio of scattering to absorption has been investigated, and nanoparticle – polymer composites have further been [...]