Browsing Chemistry (Scholarly Publications) by Author "Boland, John"
Now showing items 1-20 of 27
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Alcohol Pre-treatment to Eliminate the Interference of Micro Additive Particles in the Identification of Microplastics Using Raman Spectroscopy
Boland, John (2022)Raman spectroscopy is an indispensable tool in the analysis of microplastics smaller than 20 μm. However, due to its limitation, Raman spectroscopy may be incapable of effectively distinguishing microplastics from micro ... -
Associative Enhancement of Time Correlated Response to Heterogeneous Stimuli in a Neuromorphic Nanowire Device
Boland, John; Donegan, John (2016)In spite of the strong interest in brain‐like or neuromorphic computation, relatively few devices have emerged whose neuromorphic behavior is embedded in the hardware itself and not reliant on external programming of ... -
Co-percolation to tune conductive behaviour in dynamical metallic nanowire networks
Ferreira, Mauro; Boland, John (2016)Nanowire networks act as self‐healing smart materials, whose sheet resistance can be tuned via an externally applied voltage stimulus. This memristive response occurs due to modification of junction resistances to form a ... -
Collective capacitive and memristive responses in random nanowire networks: Emergence of critical connectivity pathways
Boland, John; Ferreira, Mauro (2018)Random nanowire networks (NWNs) are promising synthetic architectures for non-volatile memory devices and hardware-based neuromorphic applications due to their history-dependent re- sponses, recurrent connectivity, and ... -
Core shift controls grain boundary energy scaling in Cu and Al
Boland, John (2024)Grain boundary energies in different elements are correlated. The proportional scaling constants relating the energies of crystallography-equivalent boundaries in any two f.c.c. elements are nearly constant, with the ... -
Effective medium theory for the conductivity of disordered metallic nanowire networks
Ferreira, Mauro; Boland, John (2016)Motivated by numerous technological applications, there is current interest in the study of the conductive properties of networks made of randomly dispersed nanowires. The sheet resistance of such networks is normally ... -
Emulating synaptic response in n- and p-channel MoS2 transistors by utilizing charge trapping dynamics
Boland, John (2020)Brain-inspired, neuromorphic computing aims to address the growing computational complexity and power consumption in modern von-Neumann architectures. Progress in this area has been hindered due to the lack of hardware ... -
Extra lithium-ion storage capacity enabled by liquid-phase exfoliated indium selenide nanosheets conductive network
Coleman, Jonathan; Nicolosi, Valeria; Boland, John (2020)As a recent addition to the family of van der Waals layered crystals, indium selenide (InSe) possesses unique optoelectronic and photonic properties, enabling high-performance electronic devices for broad applications. ... -
High levels of microparticles release from biodegradable polylactic acid paper cups compared with polyethylene-lined cups
Li, Dunzhu; Xiao, Liwen; Boland, John (2023)Polylactic acid (PLA) is a popular replacement for conventional fossil-fuel based plastics products such as polyethylene (PE) due to its high biodegradability and recyclability. Previous studies confirmed that PLA microplastics ... -
Mapping Conformational Changes in a Self-Assembled Two-Dimensional Molecular Network by Statistical Analysis of Conductance Images
Naydenov, Borislav; Boland, John (2019)A self-assembled two-dimensional (2D) film of tetra-phenyl-porphyrin-4-ferrocene molecules on Au(111) is studied by STM for the presence of intra- and intermolecular correlations in the configurations of the four-pendant ... -
Material characterisation of nanowires with intrinsic stress
Boland, John (2017)When fabricating nanowires in a doubly-clamped beam configuration it is possible for a residual axial stress to be generated. Here, we show that material characterisation of metal and semiconductor nanowires subjected ... -
Metal Nanostructure Synthesis via Surface Energy Driven Growth
Boland, John (2016)Identifying new synthesis methods to produce single crystal metal nanowires has the potential to expand nanowire based technology integration and increase applications. The catalogue of single crystal metal nanostructures ... -
Micro and nano plastics release from a single absorbable suture into simulated body fluid
Boland, John (2024)Synthetic polymers are widely used in medical devices and implants where biocompatibility and mechanical strength are key enablers of emerging technologies. One concern that has not been widely studied is the potential of ... -
Microplastic release from the degradation of polypropylene feeding bottles during infant formula preparation
Boland, John; Gounko, Iouri; Xiao, Liwen; Li, Dunzhu (2020)Polypropylene-based products are commonly used for food preparation and storage, but their capacity to release microplastics is poorly understood. We investigated the potential exposure of infants to microplastics from ... -
Nonlinear ion drift-diffusion memristance description of TiO2 RRAM devices
Boland, John; Ferreira, Mauro (2020)The nature and direction of the hysteresis in memristive devices is critical to device operation and performance and the ability to realise their potential as neuromorphic applications. TiO2 is a prototypical memristive ... -
Position Controlled Growth of Single Crystal Cu3Si Nanostructures
Boland, John (2015)In this work we demonstrate the position controlled growth of single Cu3Si nanostructures using a Ge-Cu bilayer film that contains a pattern of defects on a Si substrate with a thin oxide layer. The defects act as nucleation ... -
"Quantitative study of the photothermal properties of metallic nanowire networks"
Boland, John (2015)In this article, we present a comprehensive investigation of the photothermal properties of plasmonic nanowire networks. We measure the local steady-state temperature increase, heat source density, and absorption in Ag, ... -
Real-world natural passivation phenomena can limit microplastic generation in water
Xiao, Liwen; Gounko, Iouri; Shvets, Igor; Moebius, Matthias; Li, Dunzhu; Boland, John (2022)Previous studies using Deionized (DI) water found that household plastic products used in food preparation and storage are a local and immediate source of extremely high quantities of microplastics (MPs) released ... -
The Resistance of Cu Nanowire-Nanowire Junctions & Electro-Optical Modeling of Cu Nanowire Networks
Boland, John; Ferreira, Mauro (2020)Flexible transparent conductors made from networks of metallic nanowires are a potential replacement for conventional, non-flexible, and transparent conducting materials such as indium tin oxide. Cu nanowires are particularly ... -
Restructuring of emergent grain boundaries at free surfaces – An interplay between core stabilization and elastic stress generation
Boland, John (2022)Emergent grain boundaries at free surface impact a wide range of material properties but little is known about their atomic-scale behavior. Using scanning tunneling microscopy and calculations, we studied the structure of ...