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Research

 
 
Detailed below is a selection of publications involving CMA.
 

Aherne, D., D. E. Charles, et al. (2009). "Etching-Resistant Silver Nanoprisms by Epitaxial Deposition of a Protecting Layer of Gold at the Edges." Langmuir 25(17): 10165-10173.

 

Aherne, D., M. Gara, et al. (2010). "From Ag Nanoprisms to Triangular AuAg Nanoboxes." Advanced Functional Materials 20(8): 1329-1338.

 

Aherne, D., D. M. Ledwith, et al. (2008). "Optical Properties and Growth Aspects of Silver Nanoprisms Produced by a Highly Reproducible and Rapid Synthesis at Room Temperature." Advanced Functional Materials 18(14): 2005-2016.

 

Aine, M. W., E. B. Margaret, et al. (2004). "Enhanced Third-Order Optical Nonlinearity of Silver Nanoparticles with a Tunable Surface Plasmon Resonance." Journal of Nanoscience and Nanotechnology 4(1-2): 66-68.

Poly(vinylalcohol) (PVA)-stabilized silver nanoparticles were prepared by a seeding method. Nanoparticles of varying morphology were obtained by controlled variation of the reaction conditions, and this method allowed the tailoring of the position of the surface plasmon resonance. The samples show two bands in the visible absorption spectrum: one in the 410-440-nm region and a second peak between 500 and 600 nm. This tunable surface plasmon resonance serves to increase the third-order optical nonlinearity (<I><IMG SRC="/iso-ents/isogrk32/chi-s.gif" ALT="chi"></I><SUP>3</SUP>) of the nanoparticles (measured at 532 nm) by a factor of 16.

 

Amaro, M. I., L. Tajber, et al. (2011). "Optimisation of spray drying process conditions for sugar nanoporous microparticles (NPMPs) intended for inhalation." International Journal of Pharmaceutics 421(1): 99-109.

 

Bianco, S., V. Caron, et al. (2012). "Modification of the Solid-State Nature of Sulfathiazole and Sulfathiazole Sodium by Spray Drying." AAPS PharmSciTech: 1-14.

 

Biddlecombe, G. B., Y. K. Gun'ko, et al. (2001). "Preparation of magnetic nanoparticles and their assemblies using a new Fe() alkoxide precursor." Journal of Materials Chemistry 11(12): 2937-2939.

Hydrolysis of the new metallorganic precursor Fe(OBut)2(THF)2 followed by ultrasound and thermal treatment yielded either nanoparticles of [gamma]-Fe2O3 or Fe3O4, depending on the process conditions. The samples have been characterised by X-ray powder diffraction, TEM, SEM, Mossbauer spectroscopy and magnetization measurements. The maghemite nanoparticles (9[space]+/-[space]2[space]nm) are superparamagnetic and form unique needle-like assemblies of nanoparticle arrays. The nanoparticles of Fe3O4 (19[space]+/-[space]2[space]nm) form plate-like aggregates about 10[space][small micro]m thick.

 

Blake, R., J. N. Coleman, et al. (2006). "Reinforcement of poly(vinyl chloride) and polystyrene using chlorinated polypropylene grafted carbon nanotubes." Journal of Materials Chemistry 16(43): 4206-4213.

Multiwalled carbon nanotubes, covalently functionalised with chlorinated polypropylene, were used as the filler material in polymer nanotube composites. Both polystyrene and poly(vinyl chloride) were used as the polymer matrix. The functionalised nanotubes could be stably dispersed in tetrahydrofuran allowing the preparation of composites by solution processing. Close to a twofold increase in both modulus and strength were measured at nanotube loading levels of less than 1 vol%. Reinforcement values of d/d = 115 +/- 34 GPa and d/d = 304 +/- 90 GPa were observed for polystyrene and poly(vinyl chloride) based composites respectively. The high levels of reinforcement are due to the superior dispersion and stress transfer as evidenced by SEM images of the fracture surfaces. These properties can both be attributed to the presence of the functional groups.

 

Blake, R., Y. K. Gun'ko, et al. (2004). "A Generic Organometallic Approach toward Ultra-Strong Carbon Nanotube Polymer Composites." Journal of the American Chemical Society 126(33): 10226-10227.

 

Blond, D., V. Barron, et al. (2006). "Enhancement of Modulus, Strength, and Toughness in Poly(methyl methacrylate)-Based Composites by the Incorporation of Poly(methyl methacrylate)-Functionalized Nanotubes." Advanced Functional Materials 16(12): 1608-1614.

 

Byrne, R. S. and P. B. Deasy (2002). "Use of commercial porous ceramic particles for sustained drug delivery." International Journal of Pharmaceutics 246(1–2): 61-73.

 

Byrne, R. S. and P. B. Deasy (2005). "Use of porous aluminosilicate pellets for drug delivery." Journal of Microencapsulation 22(4): 423-437.

 

Byrne, S. J., S. A. Corr, et al. (2004). "Magnetic nanoparticle assemblies on denatured DNA show unusual magnetic relaxivity and potential applications for MRI." Chemical Communications(22): 2560-2561.

Denatured (substantially single-stranded) herring sperm DNA acts as a template for the preparation of magnetic nanowires, forming stable aqueous suspensions, which exhibit unprecedentedly high relaxivity at low field, suggesting that the material may be a potentially useful reagent for MRI.

 

Byrne, S. J., S. A. Corr, et al. (2006). "Optimisation of the synthesis and modification of CdTe quantum dots for enhanced live cell imaging." Journal of Materials Chemistry 16(28): 2896-2902.

We report the preparation and luminescence enhancement of thioglycolic acid (TGA) stabilised CdTe quantum dots (QDs) for use as live cell imaging tools in THP-1 macrophage cells. Short irradiating times utilising a high powered Hg lamp resulted in increases in luminescence efficiencies of up to [similar]40% and permit significantly enhanced live imaging of the THP-1 cellular components. It was found that the TGA-stabilised QDs traverse the cell membrane, illuminating the cytoplasm and decorating the nuclear membrane. These studies highlight the potential use of photoetched CdTe QDs as probes for specific labelling.

 

Byrne, S. J., B. le Bon, et al. (2007). "Synthesis, Characterisation, and Biological Studies of CdTe Quantum Dot–Naproxen Conjugates." ChemMedChem 2(2): 183-186.

 

Cadek, M., R. Murphy, et al. (2002). "Optimisation of the arc-discharge production of multi-walled carbon nanotubes." Carbon 40(6): 923-928.

 

Charles, D. E., D. Aherne, et al. (2009). "Versatile Solution Phase Triangular Silver Nanoplates for Highly Sensitive Plasmon Resonance Sensing." ACS Nano 4(1): 55-64.

 

Clarke, H., V. R. Troll, et al. (2009). "Phreatomagmatic to Strombolian eruptive activity of basaltic cinder cones: Montaña Los Erales, Tenerife, Canary Islands." Journal of Volcanology and Geothermal Research 180(2–4): 225-245.

 

Cloonan, S. M. and D. C. Williams (2011). "The antidepressants maprotiline and fluoxetine induce Type II autophagic cell death in drug-resistant Burkitt's lymphoma." International Journal of Cancer 128(7): 1712-1723.

 

Coey, J. M. D., M. Venkatesan, et al. (2002). "Ferromagnetism of a graphite nodule from the Canyon Diablo meteorite." Nature 420(6912): 156.

There are recent reports of weak ferromagnetism in graphite and synthetic carbon materials such as rhombohedral C[sub 60] (ref. 4), as well as a theoretical prediction of a ferromagnetic instability in graphene sheets. With very small ferromagnetic signals, it is difficult to be certain that the origin is intrinsic, rather than due to minute concentrations of iron-rich impurities. Here we take a different experimental approach to study ferromagnetism in graphitic materials, by making use of meteoritic graphite, which is strongly ferromagnetic at room temperature. We examined ten samples of extraterrestrial graphite from a nodule in the Canyon Diablo meteorite. Graphite is the major phase in every sample, but there are minor amounts of magnetite, kamacite, akaganéite, and other phases. By analysing the phase composition of a series of samples, we find that these iron-rich minerals can only account for about two-thirds of the observed magnetization. The remainder is somehow associated with graphite, corresponding to an average magnetization of 0.05 Bohr magnetons per carbon atom. The magnetic ordering temperature is near 570 K. We suggest that the ferromagnetism is a magnetic proximity effect induced at the interface with magnetite or kamacite inclusions. [ABSTRACT FROM AUTHOR]

Copyright of Nature is the property of Nature Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

 

Coleman, J. N., M. Cadek, et al. (2004). "High Performance Nanotube-Reinforced Plastics: Understanding the Mechanism of Strength Increase." Advanced Functional Materials 14(8): 791-798.

 

Coleman, J. N., M. Lotya, et al. (2011). "Two-Dimensional Nanosheets Produced by Liquid Exfoliation of Layered Materials." Science 331(6017): 568-571.

If they could be easily exfoliated, layered materials would become a diverse source of two-dimensional crystals whose properties would be useful in applications ranging from electronics to energy storage. We show that layered compounds such as MoS2, WS2, MoSe2, MoTe2, TaSe2, NbSe2, NiTe2, BN, and Bi2Te3 can be efficiently dispersed in common solvents and can be deposited as individual flakes or formed into films. Electron microscopy strongly suggests that the material is exfoliated into individual layers. By blending this material with suspensions of other nanomaterials or polymer solutions, we can prepare hybrid dispersions or composites, which can be cast into films. We show that WS2 and MoS2 effectively reinforce polymers, whereas WS2/carbon nanotube hybrid films have high conductivity, leading to promising thermoelectric properties.

 

Corr, S. A., Y. K. Gun'ko, et al. (2004). "Magnetite nanocrystals from a single source metallorganic precursor: metallorganic chemistry vs. biogeneric bacteria." Journal of Materials Chemistry 14(6): 944-946.

Magnetite nanocrystals, which are normally formed by magnetogeneric bacteria, have been prepared using a single source metallorganic precursor.

 

Corr, S. A., A. O' Byrne, et al. (2006). "Magnetic-fluorescent nanocomposites for biomedical multitasking." Chemical Communications(43): 4474-4476.

Fluorescent magnetite nanocomposites based on magnetic nanoparticles, a polyhedral octaaminopropylsilsesquioxane and a porphyrin derivative have been prepared. The intracellular uptake of the nanocomposites by macrophage and bone osteoblast cells, and their potential as MRI contrast agents, has been demonstrated.

 

Corrigan, D. O., O. I. Corrigan, et al. (2004). "Predicting the physical state of spray dried composites: salbutamol sulphate/lactose and salbutamol sulphate/polyethylene glycol co-spray dried systems." International Journal of Pharmaceutics 273(1–2): 171-182.

 

Corrigan, D. O., O. I. Corrigan, et al. (2006). "Physicochemical and in vitro deposition properties of salbutamol sulphate/ipratropium bromide and salbutamol sulphate/excipient spray dried mixtures for use in dry powder inhalers." International Journal of Pharmaceutics 322(1-2): 22-30.

 

Corrigan, D. O., A. M. Healy, et al. (2002). "The effect of spray drying solutions of polyethylene glycol (PEG) and lactose/PEG on their physicochemical properties." International Journal of Pharmaceutics 235(1–2): 193-205.

 

Corrigan, D. O., A. M. Healy, et al. (2003). "The effect of spray drying solutions of bendroflumethiazide/polyethylene glycol on the physicochemical properties of the resultant materials." International Journal of Pharmaceutics 262(1–2): 125-137.

 

Corrigan, D. O., A. M. Healy, et al. (2006). "Preparation and release of salbutamol from chitosan and chitosan co-spray dried compacts and multiparticulates." European Journal of Pharmaceutics and Biopharmaceutics 62(3): 295-305.

 

Corrigan, D. O., A. M. Healy, et al. (2006). "Preparation and release of salbutamol from chitosan and chitosan co-spray dried compacts and multiparticulates." European Journal of Pharmaceutics and Biopharmaceutics 62(3): 295-305.

 

Davies, G.-L., S. A. Corr, et al. (2011). "NMR Relaxation of Water in Nanostructures: Analysis of Ferromagnetic Cobalt–Ferrite Polyelectrolyte Nanocomposites." ChemPhysChem 12(4): 772-776.

 

De, S., P. J. King, et al. (2010). "Flexible, Transparent, Conducting Films of Randomly Stacked Graphene from Surfactant-Stabilized, Oxide-Free Graphene Dispersions." Small 6(3): 458-464.

 

Elmes, R. B. P., K. N. Orange, et al. (2011). "Luminescent Ruthenium(II) Polypyridyl Functionalized Gold Nanoparticles; Their DNA Binding Abilities and Application As Cellular Imaging Agents." Journal of the American Chemical Society 133(40): 15862-15865.

 

Gad, S., L. Tajber, et al. (2012). "Preparation and characterisation of novel spray-dried nano-structured para-aminosalicylic acid particulates for pulmonary delivery: Impact of ammonium carbonate on morphology, chemical composition and solid state." Journal of Pharmacy and Pharmacology.

 

Gad, S., L. Tajber, et al. (2012). "Preparation and characterisation of novel spray-dried nano-structured para-aminosalicylic acid particulates for pulmonary delivery: impact of ammonium carbonate on morphology, chemical composition and solid state." Journal of Pharmacy and Pharmacology: no-no.

 

Gallagher, S. A., M. P. Moloney, et al. (2010). "Synthesis and spectroscopic studies of chiral CdSe quantum dots." Journal of Materials Chemistry 20(38): 8350-8355.

Using microwave irradiation, water soluble, optically active, penicillamine (Pen) capped CdSe nanocrystals with broad spectral distribution (430-780 nm) of photoluminescence have been produced and studied by a range of instrumental techniques including absorption, circular dichroism and both steady state and time resolved photoluminescence spectroscopy. The photoluminescence of these nanocrystals is attributed to emission from surface defect states. The decay of the excited state in the nanosecond region, which can be analysed as a triple exponential, depends strongly on the emission wavelength selected, but only weakly on the excitation wavelength.

 

Geng, Y. L., J. F. Liu, et al. (2011). "Rapid metallization of lambda DNA and DNA origami using a Pd seeding method." Journal of Materials Chemistry 21(32): 12126-12131.

This work focuses on metallization of lambda DNA and DNA origami on surfaces, as a step toward application in nanocircuit fabrication. We have succeeded in forming continuous Pd and Au nanowires using lambda DNA, and branched Au nanostructures using DNA origami. The approach we describe here is simple and efficient compared with prior work, enabling the rapid creation of small-size nanowires or nanostructures. The average diameter of Pd nanowires formed is similar to 28 nm, while the length of branched Au nanostructures is between 200-250 nm, with similar to 40 nm diameters. These results demonstrate improved procedures for using DNA molecules as templates to form metal nanostructures, with strong potential to be used in bottom-up nanoelectronic circuit fabrication.

 

Gerard, V. A., Y. K. Gun'ko, et al. (2011). "Plasmon-induced CD response of oligonucleotide-conjugated metal nanoparticles." Chemical Communications 47(26): 7383-7385.

Non-chiral metal nanoparticles conjugated with chiral oligonucleotide molecules demonstrated a circular dichroism (CD) at the plasmonic wavelengths due to aggregation effects.

 

Ghosh, S., D. Carty, et al. (2010). "NMR studies into colloidal stability and magnetic order in fatty acid stabilised aqueous magnetic fluids." Physical Chemistry Chemical Physics 12(42): 14009-14016.

We report the physico-chemical characterisation of fatty acid stabilised aqueous magnetic fluids, which are ideal systems for studying the influence of nanoparticle aggregation on the emergent magnetic resonance properties of the suspensions. Stable colloids of superparamagnetic magnetite, Fe3O4, nanoparticle clusters in the 80 to 100 nm size range were produced by in situ nanoparticle growth and stabilisation, and by suspending pre-formed nanoparticles. NMR relaxation analysis shows that the magnetic resonance properties of the two types of suspension differ substantially and provides new insights into how the relaxation mechanisms are determined by the organisation of the nanoparticles within the clusters.

 

Gleeson, O., R. Tekoriute, et al. (2009). "The First Magnetic Nanoparticle-Supported Chiral DMAP Analogue: Highly Enantioselective Acylation and Excellent Recyclability." Chemistry – A European Journal 15(23): 5669-5673.

 

Haugh, M. G., M. J. Jaasma, et al. (2009). "The effect of dehydrothermal treatment on the mechanical and structural properties of collagen-GAG scaffolds." Journal of Biomedical Materials Research Part A 89A(2): 363-369.

 

Healy, A. M., B. F. McDonald, et al. (2008). "Characterisation of excipient-free nanoporous microparticles (NPMPs) of bendroflumethiazide." European Journal of Pharmaceutics and Biopharmaceutics 69(3): 1182-1186.

 

Inês Amaro, M., J. Rocha, et al. (2009). "Anti-inflammatory activity of naringin and the biosynthesised naringenin by naringinase immobilized in microstructured materials in a model of DSS-induced colitis in mice." Food Research International 42(8): 1010-1017.

 

Karim, S., K. Maaz, et al. (2009). "Diameter dependent failure current density of gold nanowires." Journal of Physics D: Applied Physics 42(18): 185403.

Failure current density of single gold nanowires is investigated in this paper. Single wires with diameters ranging from 80 to 720 nm and length 30 µm were electrochemically deposited in ion track-etched single-pore polycarbonate membranes. The maximum current density was investigated while keeping the wires embedded in the polymer matrix and ramping up the current until failure occurred. The current density is found to increase with diminishing diameter and the wires with a diameter of 80 nm withstand 1.2 × 10 12 A m −2 before undergoing failure. Possible reasons for these results are discussed in this paper.

 

Kelly, H. M., P. B. Deasy, et al. (2004). "Formulation and preliminary in vivo dog studies of a novel drug delivery system for the treatment of periodontitis." International Journal of Pharmaceutics 274(1–2): 167-183.

 

Khan, U., A. O'Neill, et al. (2010). "High-Concentration Solvent Exfoliation of Graphene." Small 6(7): 864-871.

 

Kundu, P., U. Chandni, et al. (2012). "Pristine, adherent ultrathin gold nanowires on substrates and between pre-defined contacts via a wet chemical route." Nanoscale 4(2): 433-437.

We demonstrate a simple strategy of obtaining clean, ultrathin single crystal Au nanowires on substrates and interconnecting pre-defined contacts with an insight into the growth mechanism. The pristine nature enables electron transport measurement through such ultrathin wires and opens up possibilities of exploring its properties for a wide range of applications.

 

Lahiff, E., R. Leahy, et al. (2006). "Physical properties of novel free-standing polymer–nanotube thin films." Carbon 44(8): 1525-1529.

 

Lahiff, E., C. Y. Ryu, et al. (2003). "Selective Positioning and Density Control of Nanotubes within a Polymer Thin Film." Nano Letters 3(10): 1333-1337.

 

Lahiff, E., T. Woods, et al. (2009). "Synthesis and characterisation of controllably functionalised polyaniline nanofibres." Synthetic Metals 159(7–8): 741-748.

 

Ledwith, D., S. C. Pillai, et al. (2004). "Microwave induced preparation of a-axis oriented double-ended needle-shaped ZnO microparticles." Chemical Communications(20): 2294-2295.

Microwave irradiation of solutions of Zn(NO) and urea provides a straightforward route to -axis oriented crystals of needle-like morphology.

 

Ledwith, D. M., A. M. Whelan, et al. (2007). "A rapid, straight-forward method for controlling the morphology of stable silver nanoparticles." Journal of Materials Chemistry 17(23): 2459-2464.

A rapid, straight-forward method for the preparation of silver colloidal solutions of various colours has been developed. This is based on the reduction of silver ions by ascorbic acid in the presence of citrate-stabilized silver seeds, additional trisodium citrate and a polymer such as polyvinylpyrrolidone. The colour of the sol is controlled by varying the concentration of only one reagent, namely the trisodium citrate. TEM studies show that this effect is due to changes in morphology of the particles. Working at temperatures above 50 [degree]C yields well-defined triangular plates, which are stable in the reaction medium. Samples prepared at lower temperatures and left in the reaction medium experience etching and a consequent change in particle shape. The mechanisms of the initial particle growth and the etching process are discussed.

 

Levis, S. R. and P. B. Deasy (2002). "Characterisation of halloysite for use as a microtubular drug delivery system." International Journal of Pharmaceutics 243(1–2): 125-134.

 

Lotya, M., Y. Hernandez, et al. (2009). "Liquid Phase Production of Graphene by Exfoliation of Graphite in Surfactant/Water Solutions." Journal of the American Chemical Society 131(10): 3611-3620.

 

Lotya, M., P. J. King, et al. (2010). "High-Concentration, Surfactant-Stabilized Graphene Dispersions." ACS Nano 4(6): 3155-3162.

 

McBride, R. A., J. M. Kelly, et al. (2003). "Growth of well-defined ZnO microparticles by hydroxide ion hydrolysis of zinc salts." Journal of Materials Chemistry 13(5): 1196-1201.

The morphology of the microcrystalline zinc oxide formed by reaction of zinc salts with sodium hydroxide depends critically on the reaction conditions. To understand this, the nature of the solid product has been probed by scanning electron microcopy (SEM) and X-ray diffraction (XRD) and the concentration of zinc remaining in the solution has been determined at regular intervals throughout the reaction. Two general preparative procedures have been followed. The first, which involves simply heating an aqueous solution containing Zn(NO) (0.025 M) and sodium hydroxide (0.375 M) to 101 [degree]C and maintaining it at that temperature for periods of up to 8 hours, produces star-like microcrystals. The star-like morphology is apparently caused by multiple crystal twinning at the onset of growth, and the size and shape of the microcrystals have been found to be affected by both the reaction stoichiometry and the type of zinc salt counterion. In the second method, which produces needles of zinc oxide (lengths up to 9.5 [small micro]m-aspect ratio >6), the reagents are stirred at room temperature for two hours before heating the mixture to 101 [degree]C and maintaining it at that temperature for up to 24 hours. Pre-stirring allows the formation of Zn(OH), which is shown by XRD and SEM to transform to ZnO upon heating.

 

McCarthy, B., J. N. Coleman, et al. (2000). "Observation of site selective binding in a polymer nanotube composite." Journal of Materials Science Letters 19(24): 2239-2241.

 

McCarthy, B., J. N. Coleman, et al. (2002). "A Microscopic and Spectroscopic Study of Interactions between Carbon Nanotubes and a Conjugated Polymer." The Journal of Physical Chemistry B 106(9): 2210-2216.

 

Mohammadzadegan, R., H. Mohabatkar, et al. (2008). "DNA-templated gold nanowires." Physica E-Low-Dimensional Systems & Nanostructures 41(1): 142-145.

We have developed simple methods of reproducibly creating deoxyribonucleic acid (DNA)-templated gold nanowires on silicon. First DNA nanowires were aligned on silicon surfaces. Briefly, modified silicon wafer was soaked in the DNA solution, and then the solution was removed using micropipettes: the surface tension at the moving air-solution interface is sufficient to align the DNA nanowires on the silicon wafer. In another attempt, an aqueous dispersion of sodium azide-stabilized gold nanoparticles was prepared. The nanoparticles aligned double-stranded X-DNA to form a linear nanoparticle array. Continuous gold nanowires were obtained. The above nanowires were structurally characterized using scanning electron microscopy. The results of the characterizations show the wires to be 57-323 nm wide, to be continuous with a length of 2.8-9.5 mu m. The use of DNA as a template for the self-assembly of conducting nanowires represents a potentially important approach in the fabrication of nanoscale interconnects. (c) 2008 Elsevier B.V. All rights reserved.

 

Mottequin, B. and G. Sevastopulo (2009). "Predatory boreholes in Tournaisian (Lower Carboniferous) spiriferid brachiopods." Lethaia 42(3): 274-282.

 

Movia, D., E. D. Canto, et al. (2010). "Purified and Oxidized Single-Walled Carbon Nanotubes as Robust Near-IR Fluorescent Probes for Molecular Imaging." The Journal of Physical Chemistry C 114(43): 18407-18413.

 

Mullaney, E., P. A. Brown, et al. (2009). "Proteomic and functional characterization of the outer membrane vesicles from the gastric pathogen Helicobacter pylori." PROTEOMICS – Clinical Applications 3(7): 785-796.

 

Murphy, R., J. N. Coleman, et al. (2002). "High-Yield, Nondestructive Purification and Quantification Method for Multiwalled Carbon Nanotubes." The Journal of Physical Chemistry B 106(12): 3087-3091.

 

NíÓgáin, O., L. Tajber, et al. (2012). "Spray drying from organic solvents to prepare nanoporous/nanoparticulate microparticles of protein: excipient composites designed for oral inhalation." Journal of Pharmacy and Pharmacology: no-no.

 

Nitschke, C., S. M. O'Flaherty, et al. (2003). "Material Investigations and Optical Properties of Phthalocyanine Nanoparticles." The Journal of Physical Chemistry B 108(4): 1287-1295.

 

Nolan, L. M., J. Li, et al. (2011). "Particle engineering of materials for oral inhalation by dry powder inhalers. II - Sodium cromoglicate." International Journal of Pharmaceutics 405(1-2): 36-46.

 

Nolan, L. M., L. Tajber, et al. (2009). "Excipient-free nanoporous microparticles of budesonide for pulmonary delivery." European Journal of Pharmaceutical Sciences 37(5): 593-602.

 

Ó Dálaigh, C., S. A. Corr, et al. (2007). "A Magnetic-Nanoparticle-Supported 4-N,N-Dialkylaminopyridine Catalyst: Excellent Reactivity Combined with Facile Catalyst Recovery and Recyclability." Angewandte Chemie 119(23): 4407-4410.

 

O’Connor, I., H. Hayden, et al. (2009). "Polymer Reinforcement with Kevlar-Coated Carbon Nanotubes." The Journal of Physical Chemistry C 113(47): 20184-20192.

 

O'Connor, I., H. Hayden, et al. (2009). "High-Strength, High-Toughness Composite Fibers by Swelling Kevlar in Nanotube Suspensions." Small 5(4): 466-469.

 

O'Flaherty, S. M., R. Murphy, et al. (2003). "Material Investigation and Optical Limiting Properties of Carbon Nanotube and Nanoparticle Dispersions." The Journal of Physical Chemistry B 107(4): 958-964.

 

Ógáin, O. N., J. Li, et al. (2011). "Particle engineering of materials for oral inhalation by dry powder inhalers. i - Particles of sugar excipients (trehalose and raffinose) for protein delivery." International Journal of Pharmaceutics 405(1-2): 23-35.

 

Padmanabhan, S. C., D. Ledwith, et al. (2009). "Microwave-assisted synthesis of ZnO micro-javelins." Journal of Materials Chemistry 19(48): 9250-9259.

The microwave (MW)-assisted formation of ZnO micro-javelins from zinc nitrate and urea in aqueous solution is described. The particles (named as 'micro-javelins' because of their high aspect ratio and needle-like tips) grow hexagonally with well-defined facets in the ?01[1 with combining macron]0? direction and pointed tips in (0001) direction. Powder X-ray diffraction patterns show the appearance of a strikingly dominant (1000) orientation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations reveal the morphological evolution of these hexagonal ZnO particles with time. The effect of precursor concentrations, counterion type and MW irradiation power and their consequent influence on pH and Zn2+ ion concentration are investigated. A mechanism for the formation of the micro-javelins is postulated. The microwave induced supersaturation of Zn(OH)+ species under the weakly basic pH condition and the initial growth through the (000[1 with combining macron]) direction (oxygen-rich face) are proposed to be the key factors that dictate the formation of these ZnO micro-javelins. The present one-step microwave process is a straightforward and a reproducible method for the bulk synthesis of defect-free ZnO micro-javelins, which would find potential applications in microelectronic devices (e.g. lasers, cantilevers in surface probing equipment, etc.).

 

Padmanabhan, S. C., S. C. Pillai, et al. (2007). "A Simple Sol−Gel Processing for the Development of High-Temperature Stable Photoactive Anatase Titania." Chemistry of Materials 19(18): 4474-4481.

 

Paluch, K. J., L. Tajber, et al. (2011). "Preparation and characterisation of novel chlorothiazide potassium solid-state salt forms: Intermolecular self assembly suprastructures." European Journal of Pharmaceutical Sciences 42(3): 220-229.

 

PavÍA, S. (2006). "THE DETERMINATION OF BRICK PROVENANCE AND TECHNOLOGY USING ANALYTICAL TECHNIQUES FROM THE PHYSICAL SCIENCES*†." Archaeometry 48(2): 201-218.

 

Pavía, S. and S. Roundtree (2005). "An Investigation into Irish Historical Ceramics: the Brick of Arch Hall, Wilkinstown, Co. Meath." Proceedings of the Royal Irish Academy, Section C 105(-1): 221-242.

 

Periyat, P., N. Leyland, et al. (2010). "Rapid microwave synthesis of mesoporous TiO2 for electrochromic displays." Journal of Materials Chemistry 20(18): 3650-3655.

The fabrication of paper quality electrochromic displays based on the viologen modified TiO2 electrodes (Vio2+/TiO2) requires a cost-effective, energy efficient and rapid synthesis of mesoporous TiO2 with high yield in short reaction time. A straightforward and industrially viable process for the preparation of mesoporous nanocrystalline titania (meso-nc-TiO2) for NanoChromics[trade mark sign] display device applications by the use of microwave synthesis is presented here. Spherical aggregates of meso-nc-TiO2 were rapidly achieved using titanium butoxide, deionised water and common alcohols (isopropanol, ethanol and butanol) at comparatively low microwave power intensity (300 W) for 2 min irradiation. The material has been characterised by a range of different techniques such as XRD, Raman spectroscopy, SEM and BET surface area analysis. These materials possess surface areas up to 240 m2 g-1, which is significantly higher than similar traditional sol-gel or commercial samples. This meso-nc-TiO2 prepared was used as the working electrode for an electrochromic display device with Sb doped SnO2 as the counter electrode material on an ITO coated conducting glass. A working prototype of a NanoChromics[trade mark sign] display was successfully fabricated using this approach.

 

Pillai, S. C., J. M. Kelly, et al. (2003). "The effect of processing conditions on varistors prepared from nanocrystalline ZnO." Journal of Materials Chemistry 13(10): 2586-2590.

Nanoparticles of ZnO were prepared by the reaction of ethanolic solutions of zinc acetate and oxalic acid followed by drying (80 [degree]C) and calcination (500 [degree]C). Subsequently varistor materials were fabricated from this nanoparticular ZnO two separate routes:- a) from a "core shell" material using metal salts as additives; b) by using a conventional solid state mixing of metal oxides. Sintering (1050 [degree]C) and subsequent electrical studies were carried out for each of these samples and they were compared with commercial varistor samples prepared under similar conditions. "Core shell" type varistor material showed considerably higher breakdown voltage ( = 850 +/- 30 V mm) as compared to a sample prepared by mixing with metal oxides ( = 683 +/- 30 V mm) or commercial varistor discs ( = 507 +/- 30 V mm). The high breakdown voltage obtained is attributed to the formation of more varistor-active grain boundaries per unit area.

 

Pillai, S. C., J. M. Kelly, et al. (2004). "Self-assembled arrays of ZnO nanoparticles and their application as varistor materials." Journal of Materials Chemistry 14(10): 1572-1578.

Linear arrays of ZnO nanoparticles have been successfully prepared by a simple sol-gel condensation reaction involving chemical modifiers, followed by drying (80 [degree]C) and calcination (500 [degree]C). The calcined material (nano-array ZnO) is composed of approximately spherical nanoparticles of average diameter 21 +/- 3 nm, self-assembled to form arrays extending in length to 2-4 [small micro]m. The morphology of the ZnO is found to depend sensitively on the amounts of chemical modifiers present. In their absence the ZnO produced (nano-ZnO) is an unstructured agglomerate of nanoparticles. The mechanism for formation of these linear arrays has been investigated by examining the intermediates formed at 80 [degree]C and 250 [degree]C using XRD and TEM and by following the decomposition reactions using TGA and DSC. Varistors prepared from the nano-array ZnO by sintering (1050 [degree]C) with appropriate mixtures of metal oxides showed a breakdown voltage of 786 +/- 30 V mm, which is substantially higher than that of samples prepared under similar conditions from either micron-sized commercial ZnO (507 +/- 30 V mm) or from nano-ZnO (683 +/- 30 V mm).

 

Pillai, S. C., J. M. Kelly, et al. (2008). "High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices." Journal of Materials Chemistry 18(33): 3926-3932.

An industrially viable solution-based processing route using minimal amounts of solvent has been used to prepare bulk quantity nanopowders (average particle size 15 +/- 3 nm) for the fabrication of ZnO varistors. The xerogels, calcined powders and sintered materials were fully characterised. The preparation of varistors from nanopowders has been optimised by studying the effect of temperature on grain growth, densification and breakdown voltage. The varistors are prepared by sintering at 1050 [degree]C for 2 hours, a temperature that is significantly lower than that used in the current industrial process. Highly dense varistor discs prepared from the sintered material produce devices, with a breakdown voltage 85% higher than that of commercial varistors, making them suitable for use in miniaturised electronic circuitry. Improved performance of these materials has been attributed to the small grain size and better dispersion of additives on ZnO grains.

 

Prina-Mello, A., A. M. Whelan, et al. (2010). "Comparative Flow Cytometric Analysis of Immunofunctionalized Nanowire and Nanoparticle Signatures." Small 6(2): 247-255.

 

Rhen, F. M. F., G. Hinds, et al. (2003). "Electrodeposited FePt films." Magnetics, IEEE Transactions on 39(5): 2699-2701.

 

Satti, A., D. Aherne, et al. (2007). "Analysis of Scattering of Conduction Electrons in Highly Conducting Bamboolike DNA-Templated Gold Nanowires." Chemistry of Materials 19(7): 1543-1545.

 

Sevastopulo, G. D. (2005). "The early ontogeny of blastoids." Geological Journal 40(3): 351-362.

 

Strachan, D. R., D. E. Johnston, et al. (2008). "Real-time TEM imaging of the formation of crystalline nanoscale gaps." Phys Rev Lett 100(5): 056805.

We present real-time transmission electron microscopy of nanogap formation by feedback controlled electromigration that reveals a remarkable degree of crystalline order. Crystal facets appear during feedback controlled electromigration indicating a layer-by-layer, highly reproducible electromigration process avoiding thermal runaway and melting. These measurements provide insight into the electromigration induced failure mechanism in sub-20 nm size interconnects, indicating that the current density at failure increases as the width decreases to approximately 1 nm.

 

Tajber, L., D. O. Corrigan, et al. (2009). "Spray drying of budesonide, formoterol fumarate and their composites-I. Physicochemical characterisation." International Journal of Pharmaceutics 367(1-2): 79-85.

 

Tajber, L., O. I. Corrigan, et al. (2009). "Spray drying of budesonide, formoterol fumarate and their composites-II. Statistical factorial design and in vitro deposition properties." International Journal of Pharmaceutics 367(1-2): 86-96.

 

Tewes, F., O. L. Gobbo, et al. (2011). "Evaluation of HPβCD-PEG microparticles for salmon calcitonin administration via pulmonary delivery." Molecular Pharmaceutics 8(5): 1887-1898.

 

Tewes, F., L. Tajber, et al. (2010). "Development and characterisation of soluble polymeric particles for pulmonary peptide delivery." European Journal of Pharmaceutical Sciences 41(2): 337-352.

 

Walker, R. and S. Pavía (2011). "Physical properties and reactivity of pozzolans, and their influence on the properties of lime–pozzolan pastes." Materials and Structures 44(6): 1139-1150.

 

Wang, J., Y. Hernandez, et al. (2009). "Broadband Nonlinear Optical Response of Graphene Dispersions." Advanced Materials 21(23): 2430-2435.

 

Wiersma, S. and D. Taylor (2005). "Fatigue of materials used in microscopic components." Fatigue & Fracture of Engineering Materials & Structures 28(12): 1153-1160.

 

Yanhong, H., A. S. Olga, et al. (2006). "Carbon nanostructures for advanced composites." Reports on Progress in Physics 69(6): 1847.

Recent advances in the science and technology of composites utilizing carbon nanostructures are reviewed, including experimental results and modelling studies of composite properties and processing. Carbon nanotubes are emphasized, with other carbon nanostructures such as fullerenes, ultradispersed diamond clusters and diamond nanorods also being discussed.

 

 

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Last updated: Jul 11 2013.