Publications by authors named "J E Swallow"
Article Synopsis
- Core loss spectroscopies offer detailed insights into redox processes in Li-ion battery cathodes, necessitating precise interpretation of their spectral features, particularly the oxygen K-edge spectra of lithium transition-metal oxides (LiMO).
- Using density-functional theory (DFT), three exchange-correlation functionals were applied to simulate the spectra, with rSCAN showing a better alignment with experimental data compared to PBE and PBE +, especially for energies near the main edge.
- The study demonstrates that DFT can effectively link experimental spectroscopic signatures to theoretical models, revealing the impact of structural distortions, chemical composition, and magnetism on the differentiation of materials with similar structures and magnetic states.
Hole-Selective SiN and AlO Tunnel Nanolayers for Improved Polysilicon Passivating Contacts.
ACS Appl Energy Mater
November 2024
A highly efficient hole-selective passivating contact remains the crucial step required to increase the efficiency of polysilicon-based Si solar cells. The future development of solar modules depends on a device structure that can complement the electron-selective tunnel oxide passivating contact with an equivalent hole-selective contact. We investigate plasma enhanced chemical vapor deposited (PECVD) SiN and atomic layer deposited AlO as alternative nanolayers for the passivation layer in polysilicon tunnel contacts.
View Article and Find Full Text PDFArticle Synopsis
- * Research indicates that bulk redox occurs in LiNiO through Ni-O rehybridization without involving trapped molecular oxygen, which is linked to surface degradation.
- * Degradation is characterized by oxygen removal upon discharge and persistent nickel reduction, suggesting the need for effective surface stabilization to improve LiNiO performance.
The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×10^{17} protons on dump collected in 2021. No evidence for a dark photon signal is observed.
View Article and Find Full Text PDFLaboratory Practices, Potentiality, and Material Patienthood in Genomic Cancer Medicine.
Sci Technol Human Values
September 2024
Laboratory practitioners working in oncology are increasingly involved in implementing genomic medicine, operating at the intersection of the laboratory and the clinic. This includes molecular diagnostic work and molecular testing to direct entry into molecular-based clinical trials and treatment decision-making based on molecular profiling. In this article, we draw on qualitative interviews with laboratory practitioners in the United Kingdom to explore the role of laboratory work in genomic cancer medicine, focusing on the handling of patient tissue and making of potentiality to guide patients' present and future care.
View Article and Find Full Text PDF