Browsing Chemistry (Scholarly Publications) by Author "BOLAND, JOHN"
Now showing items 1-20 of 20
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"The dominant role of the solvent-water interface in water droplet templating of polymers"
BOLAND, JOHN (2013)We investigate the formation of microstructured polymer networks known as Breath Figure templated structures created by the presence of water vapour over evaporating polymer solutions. We use a highly controlled experimental ... -
"Effective Electrode Length Enhances Electrical Activation of Nanowire Networks: Experiment and Simulation"
FERREIRA, MAURO; BOLAND, JOHN; BELLEW, ALLEN; Fairfield, J.A.; McCarthy, Eoin K.; Ritter, Carlos (2014)Networks comprised of randomly oriented overlapping nanowires offer the possibility of simple fabrication on a variety of substrates, in contrast with the precise placement required for devices with single or aligned ... -
High-yield production of graphene by liquid-phase exfoliation of graphite
GOUNKO, IOURI; NICOLOSI, VALERIA; GOODHUE, ROBBIE; SCARDACI, VITTORIO; COLEMAN, JONATHAN NESBIT; BOLAND, JOHN; DUESBERG, GEORG STEFAN (2008)Graphene is at the centre of nanotechnology research. In order to fully exploit its outstanding properties, a mass production method is necessary. Two main routes are possible: large-scale growth or large-scale exfoliation. ... -
Measuring the force of interaction between a metallic probe and a single molecule"
BOLAND, JOHN; NAYDENOV, BORISLAV (2006) -
Modelling of Atomic Imaging and Evaporation in the Field Ion Microscope
BOLAND, JOHN (2011)Imaging and evaporation of atoms in the field ion microscope (FIM) has been modelled by using finite difference methods to calculate the voltage distribution around a tip and hence the electric field strength experienced ... -
"Modelling of Atomic Imaging and Evaporation in the field Ion Microscope"
BOLAND, JOHN (2011)Imaging and evaporation of atoms in the field ion microscope (FIM) has been modelled by using finite difference methods to calculate the voltage distribution around a tip and hence the electric field strength experienced ... -
Multilevel resistance in ZnO nanowire memristors enabled by hydrogen annealing treatment
BOLAND, JOHN (2016)In non-volatile memory technology, various attempts to overcome both technology and physical limits have led to development of neuromorphic devices like memristors. Moreover, multilevel resistance and the potential for ... -
Nonpolar Resistive Switching in Ag@TiO2 Core-Shell Nanowires
BOLAND, JOHN (2017)Nonpolar resistive switching (RS), a combination of bipolar and unipolar RS, is demonstrated for the first time in a single nanowire (NW) system. Exploiting Ag@TiO2 core–shell (CS) NWs synthesized by postgrowth shell ... -
Ordering and interactions between Cl adatoms on Cu(111) and their influence on the local electronic properties as measured by STM and STS
TORSNEY, SAMUEL; BOLAND, JOHN; NAYDENOV, BORISLAV (2017)We present a scanning tunneling microscopy/spectroscopy study of compressed Cl adlayers on Cu(111) under ultrahigh-vacuum conditions. We describe a rational scheme to assign Cl adatoms to different surface sites. The ... -
"Poisson's ratio of individual metal nanowires"
BOLAND, JOHN (2014)The measurement of Poisson's ratio of nanomaterials is extremely challenging. Here we report a lateral atomic force microscope experimental method to electromechanically measure the Poisson's ratio and gauge factor of ... -
"Programmability of nanowire networks"
BOLAND, JOHN (2014)Electrical connectivity in networks of nanoscale junctions must be better understood if nanowire devices are to be scaled up from single wires to functional material systems. We show that the natural connectivity behaviour ... -
Quantum point contacts and resistive switching in Ni/NiO nanowire junctions
BOLAND, JOHN (2016)Metal oxide devices that exhibit resistive swi tching are leading candidates for non-volatile memory applications due to their potential for fast switching, low-power operation, and high device density. It is widely ... -
"Resistance of Single Ag Nanowire Junctions and Their Role in the Conductivity of Nanowire Networks"
BOLAND, JOHN; FERREIRA, MAURO; BELLEW, ALLEN; GOMES DA ROCHA, CLAUDIA (2015)Networks of silver nanowires appear set to replace expensive indium tin oxide as the transparent conducting electrode material in next generation devices. The success of this approach depends on optimising the material ... -
"A single nanoscale junction with programmable multilevel memory"
BOLAND, JOHN; O'Kelly, Curtis; Fairfield, J.A. (2014)Nanoscale devices that are sensitive to measurement history enable memory applications, and memristors are currently under intense investigation for robustness and functionality. Here we de-scribe the fabrication and ... -
Single-atom based coherent quantum interference device structure
SANVITO, STEFANO; BOLAND, JOHN; NAYDENOV, BORISLAV; Rungger, Ivan; Mantega, Mauro (2015)We describe the fabrication, operation principles, and simulation of a coherent single-atom quantum interference device (QID) structure on Si(100) controlled by the properties of single atoms. The energy and spatial ... -
Site-Specific Evolution of Surface Stress during the Room-Temperature Oxidation of the Si(111)-(7x7) Surface.
BOLAND, JOHN; KINAHAN, NIALL; MEEHAN, DAVID (2010)The reaction of molecular oxygen with the Si(111)-7?7 surface is investigated at room temperature using in situ scanning tunneling microscopy and surface stress measurements to reveal the quantitative relationship between ... -
Study of the effect of thermal treatment on morphology and chemical composition of silicon-on-insulator
BARIMAR, PRABHAVA SAI NARAYANA; NAYDENOV, BORISLAV; BOLAND, JOHN (2016) -
"Synthesis, structural, photophysical and electrochemical studies of various d-metal complexes of btp [2,6-bis(1,2,3-triazol-4-yl)pyridine] ligands that give rise to the formation of metallo-supramolecular gels"
GUNNLAUGSSON, THORFINNUR; BOLAND, JOHN (2014)2,6-Bis(1,2,3-triazol-4-yl)pyridine (btp) is a terdentate binding motif that is synthesised modularly via the CuAAC reaction. Herein, we present the synthesis of ligands 1 and 2 and the investigation of the coordination ... -
"Ultimate Conductivity Performance in Metallic Nanowire Networks"
FERREIRA, MAURO; BOLAND, JOHN (2015) -
Variable-height scanning tunneling spectroscopy for local density of states recovery based on the 1D-WKB approximation
BOLAND, JOHN; NAYDENOV, BORISLAV (2010)We introduce a variable-height scanning tunneling spectroscopy (VH-STS) method that provides a good level of recovery of the combined surface and tip density of states (DOS) in any bias range without the complexity of ...