Farid Tariq
Imperial College London
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Publication
Featured researches published by Farid Tariq.
ACS Nano | 2017
Kian Fan Chung; Joanna Seiffert; Shu Chen; Ioannis Theodorou; Angela E. Goode; Bey Fen Leo; Catriona M. McGilvery; Farhana Hussain; Coen Wiegman; Christos Rossios; Jie Zhu; Jicheng Gong; Farid Tariq; Vladimir Yufit; Alexander J. Monteith; T. Hashimoto; Jeremy N. Skepper; Mary P. Ryan; Junfeng Zhang; Teresa D. Tetley; Alexandra E. Porter
There is a potential for silver nanowires (AgNWs) to be inhaled, but there is little information on their health effects and their chemical transformation inside the lungs in vivo. We studied the effects of short (S-AgNWs; 1.5 μm) and long (L-AgNWs; 10 μm) nanowires instilled into the lungs of Sprague–Dawley rats. S- and L-AgNWs were phagocytosed and degraded by macrophages; there was no frustrated phagocytosis. Interestingly, both AgNWs were internalized in alveolar epithelial cells, with precipitation of Ag2S on their surface as secondary Ag2S nanoparticles. Quantitative serial block face three-dimensional scanning electron microscopy showed a small, but significant, reduction of NW lengths inside alveolar epithelial cells. AgNWs were also present in the lung subpleural space where L-AgNWs exposure resulted in more Ag+ve macrophages situated within the pleura and subpleural alveoli, compared with the S-AgNWs exposure. For both AgNWs, there was lung inflammation at day 1, disappearing by day 21, but in bronchoalveolar lavage fluid (BALF), L-AgNWs caused a delayed neutrophilic and macrophagic inflammation, while S-AgNWs caused only acute transient neutrophilia. Surfactant protein D (SP-D) levels in BALF increased after S- and L-AgNWs exposure at day 7. L-AgNWs induced MIP-1α and S-AgNWs induced IL-18 at day 1. Large airway bronchial responsiveness to acetylcholine increased following L-AgNWs, but not S-AgNWs, exposure. The attenuated response to AgNW instillation may be due to silver inactivation after precipitation of Ag2S with limited dissolution. Our findings have important consequences for the safety of silver-based technologies to human health.
Solid Oxide Fuel Cell Lifetime and Reliability#R##N#Critical Challenges in Fuel Cells | 2017
Farid Tariq; Enrique Ruiz-Trejo; Antonio Bertei; Paul Boldrin; Nigel P. Brandon
Electrode microstructure is one of the main factors determining the performance and durability of solid oxide fuel cells (SOFCs). The degradation is intimately linked to the microstructure, which in turn depends upon manufacturing and operation conditions. In this chapter we discuss the main causes for degradation of electrodes, concentrating mainly on the anode and present the techniques—both typical and state-of-the-art to follow these changes. We emphasize the need to quantitatively link the microstructural properties (e.g., triple-phase boundaries, porosity, and tortuosity) with the electrochemical responses measured and, most importantly, to link the change in microstructure to the performance degradation via suitable models. The knowledge gained must then be used to design new electrodes that can extend the lifetime of SOFCs once the critical parameters have been identified.
Chemsuschem | 2017
Enrique Ruiz-Trejo; Milla Puolamaa; Brian Sum; Farid Tariq; Vladimir Yufit; Nigel P. Brandon
Abstract A simple chemical bath deposition is used to coat a complex porous ceramic scaffold with a conformal Ni layer. The resulting composite is used as a solid oxide fuel cell electrode, and its electrochemical response is measured in humidified hydrogen. X‐ray tomography is used to determine the microstructural characteristics of the uncoated and Ni‐coated porous structure, which include the surface area to total volume, the radial pore size, and the size of the necks between the pores.
Journal of Power Sources | 2014
Mohammed Harun Chakrabarti; Nigel P. Brandon; Seyedahmad Hajimolana; Farid Tariq; Vladimir Yufit; Mohd Ali Hashim; Mohamed Azlan Hussain; C.T.J. Low; P.V. Aravind
Solid State Ionics | 2012
Paul R. Shearing; Robert S. Bradley; J. Gelb; Farid Tariq; Philip J. Withers; Nigel P. Brandon
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms | 2014
David S. Eastwood; Robert S. Bradley; Farid Tariq; Samuel J. Cooper; Oluwadamilola O. Taiwo; Jeff Gelb; A. Merkle; Daniel J.L. Brett; Nigel P. Brandon; Philip J. Withers; Peter D. Lee; Paul R. Shearing
Journal of Power Sources | 2014
Farid Tariq; Vladimir Yufit; Masashi Kishimoto; Paul R. Shearing; Svetlana Menkin; D. Golodnitsky; Jeff Gelb; E. Peled; Nigel P. Brandon
Acta Materialia | 2011
Farid Tariq; R. Haswell; Peter D. Lee; David W. McComb
ECS Electrochemistry Letters | 2014
Farid Tariq; Vladimir Yufit; David S. Eastwood; Yu Merla; Moshiel Biton; Billy Wu; Zhangwei Chen; Kathrin Freedman; Gregory J. Offer; E. Peled; Peter D. Lee; D. Golodnitsky; Nigel P. Brandon
Journal of The European Ceramic Society | 2014
Farid Tariq; Masashi Kishimoto; Vladimir Yufit; Guansen Cui; M. Somalu; Nigel P. Brandon