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研究领域

Physical/Materials/Theoretical

Our research is mainly concerned with different aspects of (bio)chemical sensing (e.g. using MEMS or optical devices), and with non-crystalline materials (e.g. glasses), understanding their physical properties in terms of their atomic structure and defects. The approach is multidisciplinary, covering solid-state chemistry, physics and materials science. Areas of interest include: Microcantilever sensors for ultra-sensitive detection of chemical and biological analytes. Optical sensors, including evanescent-waveguide sensors, SERS using holographic substrates. Computer simulation of the atomic structure and vibrational dynamics of disordered materials. Ab-initio computer simulation of phase transformations and optically-induced metastabilities in glasses, e.g. used in phase-change memories (Flash replacement). Experimental study of optically-induced changes in glasses, with applications in the fields of optical- waveguides and chemical sensors, data storage and all-optical actuation.

近期论文

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Chalcogenide phase-change materials: Past and future SR Elliott – International Journal of Applied Glass Science (2015) n/a (DOI: 10.1111/ijag.12107) Atomistic origin of the enhanced crystallization speed and n-type conductivity in Bi-doped Ge-Sb-Te phase-change materials JM Skelton, AR Pallipurath, T-H Lee, SR Elliott – Advanced Functional Materials (2014) 24, 7291 (DOI: 10.1002/adfm.201401202) Nanomechanical gas sensing with nonlinear resonant cantilevers. WJ Venstra, MJ Capener, SR Elliott – Nanotechnology (2014) 25, 425501 (DOI: 10.1088/0957-4484/25/42/425501) Tailoring transient-amorphous states: towards fast and power-efficient phase-change memory and neuromorphic computing. TH Lee, D Loke, KJ Huang, WJ Wang, SR Elliott – Adv Mater (2014) 26, 7493 (DOI: 10.1002/adma.201402696) Ultrafast phase-change logic device driven by melting processes. D Loke, JM Skelton, WJ Wang, TH Lee, R Zhao, TC Chong, SR Elliott – Proceedings of the National Academy of Sciences of the United States of America (2014) 111, 13272 (DOI: 10.1073/pnas.1407633111) Electrical properties of amorphous chalcogenide/silicon heterojunctions modified by ion implantation YG Fedorenko, MA Hughes, JL Colaux, C Jeynes, RM Gwilliam, KP Homewood, J Yao, DW Hewak, T-H Lee, SR Elliott, B Gholipour, RJ Curry – Proceedings of SPIE - The International Society for Optical Engineering (2014) 8982 (DOI: 10.1117/12.2037965) Ion-implantation-enhanced chalcogenide-glass resistive-switching devices MA Hughes, Y Fedorenko, RM Gwilliam, KP Homewood, S Hinder, B Gholipour, DW Hewak, T-H Lee, SR Elliott, RJ Curry – Applied Physics Letters (2014) 105, 083506 (DOI: 10.1063/1.4894245) N-type chalcogenides by ion implantation MA Hughes, Y Fedorenko, B Gholipour, J Yao, TH Lee, RM Gwilliam, KP Homewood, S Hinder, DW Hewak, SR Elliott, RJ Curry – Nature Communications (2014) 5, 5346 (DOI: 10.1038/ncomms6346) Optical and electronic properties of bismuth-implanted glasses MA Hughes, Y Federenko, TH Lee, J Yao, B Gholipour, RM Gwilliam, KP Homewood, DW Hewak, SR Elliott, RJ Curry – Proceedings of SPIE - The International Society for Optical Engineering (2014) 8982 (DOI: 10.1117/12.2036933) Origin of the reverse optical-contrast change of Ga-Sb phase-change materials - An ab initio molecular-dynamics study JA Dixon, SR Elliott – Applied Physics Letters (2014) 104, 141905 (DOI: 10.1063/1.4870810) Rapid microcantilever-thickness determination by optical interferometry AR Salmon, MJ Capener, JJ Baumberg, SR Elliott – Measurement Science and Technology (2014) 25, 015202 (DOI: 10.1088/0957-0233/25/1/015202) Surfactant-free coating of thiols on gold nanoparticles using sonochemistry: a study of competing processes. A Pallipurath, O Nicoletti, JM Skelton, S Mahajan, PA Midgley, SR Elliott – Ultrasonics Sonochemistry (2014) 21, 1886 (DOI: 10.1016/j.ultsonch.2014.03.014) Surfactant-free coating of thiols on gold nanoparticles using sonochemistry: A study of competing processes A Pallipurath, O Nicoletti, JM Skelton, S Mahajan, PA Midgley, SR Elliott – Ultrasonics Sonochemistry (2014) 21, 1886 (DOI: 10.1016/j.ultsonch.2014.03.014) Thermal decoupling of molecular-relaxation processes from the vibrational density of states at terahertz frequencies in supercooled hydrogen-bonded liquids J Sibik, SR Elliott, JA Zeitler – Journal of Physical Chemistry Letters (2014) 5, 1968 (DOI: 10.1021/jz5007302) Guest-Cage Atomic Interactions in a Clathrate-Based Phase-Change Material D Loke, JM Skelton, LT Law, WJ Wang, MH Li, WD Song, TH Lee, SR Elliott – Adv Mater (2014) 26, 1725 (DOI: 10.1002/adma.201304199) In silico optimization of phase-change materials for digital memories: A survey of first-row transition-metal dopants for Ge2Sb 2Te5 JM Skelton, SR Elliott – Journal of Physics: Condensed Matter (2013) 25, 205801 (DOI: 10.1088/0953-8984/25/20/205801) Selective detection of tetrahedral units in amorphous GeTe-based phase change alloys using Ge L3-edge x-ray absorption near-edge structure spectroscopy (vol 102, 111904, 2013) M Krbal, AV Kolobov, P Fons, KV Mitrofanov, Y Tamenori, J Hegedus, SR Elliott, J Tominaga – Applied Physics Letters (2013) 102, 209901 (DOI: 10.1063/1.4801918) Dynamic range enhancement and phase-ambiguity elimination in wavelength-interrogated interferometric sensor T Hutter, SR Elliott, S Ruschin – Sensors and Actuators, B: Chemical (2013) 178, 593 (DOI: 10.1016/j.snb.2012.12.105) Erratum: Selective detection of tetrahedral units in amorphous GeTe-based phase change alloys using Ge L3-edge x-ray absorption near-edge structure spectroscopy (Applied Physics Letters (2013) 102 (111904) M Krbal, AV Kolobov, P Fons, KV Mitrofanov, Y Tamenori, J Hegedüs, SR Elliott, J Tominaga – Applied Physics Letters (2013) 102 (DOI: 10.1063/1.4801918) Near-field optical enhancement by lead-sulfide quantum dots and metallic nanoparticles for SERS T Hutter, S Mahajan, SR Elliott – Journal of Raman Spectroscopy (2013) 44, 1292 (DOI: 10.1002/jrs.4347)

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