Research Articles, Institute for Critical Technology and Applied Science (ICTAS)
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Nanoparticles in road dust from impervious urban surfaces: distribution, identification, and environmental implications
(Royal Society of Chemistry, 2016-05-24)Nanoparticles (NPs) resulting from urban road dust resuspension are an understudied class of pollutants in urban environments with strong potential for health hazards. The objective of this study was to investigate the ... -
Waste not want not: life cycle implications of gold recovery and recycling from nanowaste
(Royal Society of Chemistry, 2016-08-24)Commercial-scale applications of nanotechnology are rapidly increasing. Enhanced production of nanomaterials and nano-enabled products and their resultant disposal lead to concomitant increases in the volume of nanomaterial ... -
Preparation and evaluation of nanocellulose-gold nanoparticle nanocomposites for SERS applications
(The Royal Society of Chemistry, 2015-06-09)Nanocellulose is of research interest due to its extraordinary optical, thermal, and mechanical properties. The incorporation of guest nanoparticles into nanocellulose substrates enables production of novel nanocomposites ... -
Plasmonic colorimetric and SERS sensors for environmental analysis
(The Royal Society of Chemistry, 2015-03-10)The potential for water pollution outbreaks requires the development of rapid, yet simple detection methods for water quality monitoring. Plasmonic nanostructures such as gold (AuNPs) and silver (AgNPs) nanoparticles are ... -
Size dependent ion-exchange of large mixed-metal complexes into Nafion® membranes
(The Royal Society of Chemistry, 2015-08-18)Perfluorosulfonate ionomers have been shown to demonstrate a profound affinity for large cationic complexes, and the exchange of these ions may be used to provide insight regarding Nafion® morphology by contrasting molecular ... -
Summarizing cellular responses as biological process networks
(2013-07-29)Background Microarray experiments can simultaneously identify thousands of genes that show significant perturbation in expression between two experimental conditions. Response networks, computed through the integration of ... -
Overcoming Biomass Recalcitrance by Combining Genetically Modified Switchgrass and Cellulose Solvent-Based Lignocellulose Pretreatment
(2013-09-27)Decreasing lignin content of plant biomass by genetic engineering is believed to mitigate biomass recalcitrance and improve saccharification efficiency of plant biomass. In this study, we compared two different pretreatment ... -
High-performance carbon nanotube coatings for high-power laser radiometry
(American Institute of Physics, 2008-01-01)Radiometry for the next generation of high-efficiency, high-power industrial lasers requires thermal management at optical power levels exceeding 10 kW. Laser damage and thermal transport present fundamental challenges for ... -
Three-Dimensional Characterization of Iron Oxide (alpha-Fe2O3) Nanoparticles: Application of a Compressed Sensing Inspired Reconstruction Algorithm to Electron Tomography
(Cambridge University Press, 2012-12)In this article, we demonstrate the application of a new compressed sensing three-dimensional reconstruction algorithm for electron tomography that increases the accuracy of morphological characterization of nanostructured ... -
Reduced erbium-doped ceria nanoparticles: one nano-host applicable for simultaneous optical down- and up-conversions
(2014-05-13)This paper introduces a new synthesis procedure to form erbium-doped ceria nanoparticles (EDC NPs) that can act as an optical medium for both up-conversion and down-conversion in the same time. This synthesis process results ... -
Thermal transport in composites of self-assembled nickel nanoparticles embedded in yttria stabilized zirconia
(AIP Publishing, 2009-04-01)We investigate the effect of nickel nanoparticle size on thermal transport in multilayer nanocomposites consisting of alternating layers of nickel nanoparticles and yttria stabilized zirconia (YSZ) spacer layers that are ... -
Large piezoresistivity phenomenon in SiCN-(La,Sr)MnO3 composites
(AIP Publishing, 2009-02-01)We present the results on SiCN-(La,Sr)MnO3 (LSMO) composites correlating the observed large piezoresistance behavior with the microstructural features and defect chemistry. Scanning electron microscopy characterization ... -
Laser-induced exfoliation of amorphous carbon layer on an individual multiwall carbon nanotube
(AIP Publishing, 2007-07)Pulsed laser treatment of an individual multiwall carbon nanotube induced selective exfoliation of the amorphous carbon contamination layer. The multiwall carbon nanotube (MWCNT) was exposed to a 248 nm excimer laser. After ... -
Computational approaches for discovery of common immunomodulators in fungal infections: towards broad-spectrum immunotherapeutic interventions
(2013-10-07)Background Fungi are the second most abundant type of human pathogens. Invasive fungal pathogens are leading causes of life-threatening infections in clinical settings. Toxicity to the host and drug-resistance are two major ... -
Foam-based optical absorber for high-power laser radiometry
(Optical Society of America, 2007-12-01)We report damage threshold measurements of novel absorbers comprised of either liquid-cooled silicon carbide or vitreous carbon foams. The measurements demonstrate damage thresholds up to 1.6 x 104 W/cm(2) at an incident ... -
Nanodispersed DO(3)-phase nanostructures observed in magnetostrictive Fe-19% Ga Galfenol alloys
(American Physical Society, 2008-03-10)Few nanometer large (<2 nm) inclusions of DO(3)-phase structure have been identified in the A2 matrix of highly magnetostrictive Fe-19% Ga alloys by high-resolution transmission electron microscopy (HRTEM). In addition, ... -
Frequency-dependent stability of parallel-plate electrostatic actuators in conductive fluids
(AIP Publishing, 2010-05)We present an electromechanical stability analysis of passivated parallel-plate electrostatic actuators in conductive dielectric media and show that the pull-in instability can be eliminated by tuning the applied frequency ... -
Role of coexisting tetragonal regions in the rhombohedral phase of Na0.5Bi0.5TiO3-xat.%BaTiO3 crystals on enhanced piezoelectric properties on approaching the morphotropic phase boundary
(AIP Publishing, 2012-01-01)The ferroelectric domain and local structures of Na0.5Bi0.5TiO3-xat.%BaTiO3 (NBT-x%BT) crystals for x = 0, 4.5, and 5.5 have been investigated by transmission electron microscopy. The results show that the size of polar ... -
Dynamics of photoexcited carriers and spins in InAsP ternary alloys
(AIP Publishing, 2013-06)The recent rapid progress in the field of spintronics involves extensive measurements of carrier and spin relaxation dynamics in III-V semiconductors. In addition, as the switching rates in devices are pushed to higher ... -
Towards the development of latent heat storage electrodes for electroporation-based therapies
(AIP Publishing, 2012-08-01)Phase change materials (PCMs) capable of storing a large amount of heat upon transitioning from the solid-to-liquid state have been widely used in the electronics and construction industries for mitigating temperature ...
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