
Josh CottomUniversity of Leeds · Energy Research Institute (ERI)
Josh Cottom
Post-Doctoral Researcher in Plastic Pollution
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Publications (18)
Negotiations for a global treaty on plastic pollution¹ will shape future policies on plastics production, use and waste management. Its parties will benefit from a high-resolution baseline of waste flows and plastic emission sources to enable identification of pollution hotspots and their causes². Nationally aggregated waste management data can be...
The United Nations have agreed to negotiate a legally binding instrument to eliminate plastic pollution which includes provisions to reduce environmental emissions of plastic through improved waste management. However, there is a paucity of scientific evidence to prioritize the actions which will have the greatest impact on plastic pollution mitiga...
Negotiations for a Global Treaty on plastic pollution ¹ will shape policy on plastics production, use, and waste management for the coming decades. Parties will require a detailed baseline of waste flows and plastic emission sources at high resolution to enable identification of pollution hotspots and their causes ² . Nationally aggregated waste ma...
Recycling by the informal sector provides a rapid, inexpensive solution to plastic pollution, whilst supporting the livelihoods via their inclusion and empowerment. This solution will have the greatest benefit to the environment if supporting interventions are targeted at types of plastic pollution that are the most damaging from an ecological and...
Over the coming decades, a large additional mass of plastic waste will become available for recycling, as efforts increase to reduce plastic pollution and facilitate a circular economy. New infrastructure will need to be developed, yet the processes and systems chosen should not result in adverse effects on human health and the environment. Here, w...
Over the coming decades, a large additional mass of plastic waste will become available for recycling, as the world’s largest fast moving consumer goods companies step up efforts to reduce plastic pollution and facilitate a circular economy. Finding ways to recover value from this material is a substantial challenge that has prompted exploration of...
This article investigates the impacts of flow configurations on the thermal performance of a solar heater system. Recycled aluminum cans (RACs) have been utilized as turbulators with a double pass single duct solar air collector. The CFD software of COMSOL Multiphysics V5.3a is used to model three designs: Cocurrent (model A), countercurrent (model...
This paper investigates the impacts of flow configurations on the thermal performance of a solar heater system. Recycled aluminium cans (RAC) have been utilised as turbulators with a double pass single duct solar air collector. The CFD software of COMSOL Multiphysics V5.3a is used to model three designs: co-current (model A), counter-current (model...
The focus on managing PV panel temperature has undergone a remarkable development in the last two decades. Specifically, in countries with moderate weather temperature and high insolation, the problem of keeping the PV cell temperature in an optimal range has been managed by use of PV/T collectors. In this work, a single pass PV/T collector using l...
Vertically aligned gold nanorod arrays (of aspect ratios from 3.0 to 18.0), supported on metal substrates were fabricated by electrochemical deposition within porous anodic aluminum oxide (AAO) templates. However, the coupling effects that occur within these supported arrays are complex, involving both particle-substrate and particle-particle coupl...
The surface plasmonic modes of a side-by-side aligned gold nanorod array supported on a gold substrate has been characterised by electron energy loss spectroscopy (EELS). Plasmonic coupling within the array splits the nanorods' longitudinal mode into a bright mode (symmetrically aligned dipoles) and a dark mode (anti-symmetrically aligned dipoles)....
The surface plasmonic modes of a side-by-side aligned gold nanorod array supported on a gold substrate has been characterised by electron energy loss spectroscopy (EELS). Plasmonic coupling within the array splits the nanorods' longitudinal mode into a bright mode (symmetrically aligned dipoles) and a dark mode (anti-symmetrically aligned dipoles)....
Investigating Molecule-plasmon Interactions in Chemically-functionalized Metal Nanoparticles Using Monochromated EELS - Volume 23 Issue S1 - P. Abellan, P.Z. El-Khoury, F.S. Hage, J. Cottom, A.G. Joly, W.P. Hess, R. Brydson, Q.M. Ramasse
Recent improvements in energy resolution, enabled by the use of electron energy monochromators, have the potential to turn EELS into a tool able to provide quantitative information of localized surface plasmons (LSPs), such as damping effects in single particles and electron kinetics of single plasmon modes.[1] Crucial to the prospect of quantitati...
div class="title">Hyperspectral Imaging of Surface-Plasmon-Enhanced Local Electric Fields by EELS with Tunable <60meV Energy Resolution
- Volume 22 Issue S3 - Patricia Abellan, Patrick Z. El-Khoury, Fredrik S. Hage, Josh Cottom, Alan G. Joly, Wayne P. Hess, Rik Brydson, Quentin M. Ramasse
Both photons and electrons may be used to excite surface plasmon polaritons, the collective charge density fluctuations at the surface of metal nanostructures. By virtue of their nanoscopic and dissipative nature, a detailed characterization of surface plasmon (SP) eigenmodes in real space-time ultimately requires joint nanometer spatial and femtos...
The financial savings and carbon reduction from installing photovoltaic (PV) panels and solar thermal (ST) panels side by side on a model house in the UK were investigated using a comprehensive time step simulation. Critical system parameters were identified and optimised, including the area fraction for ST and PV, the solar tank size, and the syst...