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CMP
Credit: Jack Hobhouse

David Keen

Visiting Professor

Sub department

  • Condensed Matter Physics

Research groups

  • X-ray and neutron scattering
david.keen@physics.ox.ac.uk
Telephone: 01865 (2)72310
Clarendon Laboratory, room 106
  • About
  • Publications

Local structure and lithium-ion diffusion pathway of cubic Li7La3Zr2O12 studied by total scattering and the Reverse Monte Carlo method

Journal of Materials Chemistry A: materials for energy and sustainability Royal Society of Chemistry 11:46 (2023) 25516-25533

Authors:

Haolai Tian, Guanqun Cai, Lei Tan, He Lin, Anthony E Phillips, Isaac Abrahams, David A Keen, Dean S Keeble, Andy Fiedler, Junrong Zhang, Xiang Yang Kong, Martin T Dove

Abstract:

The cubic phase of Li 7 La 3 Zr 2 O 12 shows fast diffusion of the lithium ions. Combining total scattering measurements analysed by the RMC method with molecular dynamics simulations gives a detailed picture of the distribution of the Li + ions.

Barriers to healthcare-worker adherence to infection prevention and control practices in British Columbia during the coronavirus disease 2019 (COVID-19) pandemic: A cross-sectional study

Infection Control and Hospital Epidemiology Cambridge University Press 45:4 (2023) 474-482

Authors:

Brooke T Cheng, R Ayesha Ali, Jun Chen Collet, Tara Donovan Towell, Guanghong Han, Dave Keen, Ka Wai Leung, Julie Mori, Jocelyn A Srigley

Abstract:

OBJECTIVE: The coronavirus disease 2019 (COVID-19) pandemic highlighted the importance of robust infection prevention and control (IPAC) practices to maintain patient and staff safety. However, healthcare workers (HCWs) face many barriers that affect their ability to follow these practices. We identified barriers affecting HCW adherence to IPAC practices during the pandemic in British Columbia, Canada. DESIGN: Cross-sectional web-based survey. SETTING: Acute care, long-term care or assisted living, outpatient, mental health, prehospital care, and home care. PARTICIPANTS: Eligible respondents included direct-care providers and IPAC professionals working in these settings in all health authorities across British Columbia. METHODS: We conducted a web-based survey from August to September 2021 to assess respondent knowledge and attitudes toward IPAC within the context of the COVID-19 pandemic. Respondents were asked to rate the extent to which various barriers affected their ability to follow IPAC practices throughout the pandemic and to make suggestions for improvement. RESULTS: The final analysis included 2,488 responses; 36% of respondents worked in acute care. Overall, perceptions of IPAC practice among non-IPAC professionals were positive. The main self-perceived barriers to adherence included inadequate staffing to cover absences (58%), limited space in staff rooms (57%), multibed rooms (51%), and confusing messages about IPAC practices (51%). Common suggestions for improvement included receiving more support from IPAC leadership and clearer communication about required IPAC practices. CONCLUSIONS: Our findings highlight frontline HCW perspectives regarding priority areas of improvement for IPAC practices. They will inform policy and guideline development to prevent transmission of COVID-19 and future emerging infections.

Structural insights into hybrid immiscible blends of metal鈥搊rganic framework and sodium ultraphosphate glasses

Chemical Science Royal Society of Chemistry (RSC) 14:42 (2023) 11737-11748

Authors:

Ashleigh M Chester, Celia Castillo-Blas, Roman Sajzew, Bruno P Rodrigues, Ruben Mas-Balleste, Alicia Moya, Jessica E Snelson, Sean M Collins, Adam F Sapnik, Georgina P Robertson, Daniel JM Irving, Lothar Wondraczek, David A Keen, Thomas D Bennett

Structural insights into hybrid immiscible blends of metal鈥搊rganic framework and sodium ultraphosphate glasses

Chemical Science Royal Society of Chemistry 14:42 (2023) 11737-11748

Authors:

Ashleigh M Chester, Celia Castillo-Blas, Roman Sajzew, Bruno P Rodrigues, Ruben Mas-Balleste, Alicia Moya, Jessica E Snelson, Sean M Collins, Adam F Sapnik, Georgina P Robertson, Daniel JM Irving, Lothar Wondraczek, David A Keen, Thomas D Bennett

Abstract:

The characterisation of hybrid blends comprising a metal鈥搊rganic framework (MOF) glass and a phosphate glass is explored. The mechanical and thermal properties of the blends are studied and interfacial interactions between the phases are analysed.

Unravelling the Molecular Structure and Confining Environment of an Organometallic Catalyst Heterogenized within Amorphous Porous Polymers**

Angewandte Chemie International Edition Wiley 62:44 (2023) e202310878

Authors:

Ribal Jabbour, Christopher W Ashling, Thomas C Robinson, Arafat Hossain Khan, Dorothea Wisser, Pierrick Berruyer, Ashta C Ghosh, Alisa Ranscht, David A Keen, Eike Brunner, J茅r么me Canivet, Thomas D Bennett, Caroline Mellot鈥怐raznieks, Anne Lesage, Florian M Wisser

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