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1. Reorganization Energy of Electron Transfer

   https://doi.org/10.1039/d2cp06072h  

   Matyushov, Dmitry (February 2023, Physical Chemistry Chemical Physics)

   The theory of electron transfer reactions establishes the conceptual foundation for redox solution chemistry, electrochemistry, and bioenergetics. Electron and proton transfer across the cellular membrane provide all energy of life gained through natural photosynthesis and mitochondrial respiration. Rates of biological charge transfer set kinetic bottlenecks for biological energy storage. The main system-specific parameter determining the activation barrier for a single electron-transfer hop is the reorganization energy of the medium. Both harvesting of light energy in natural and artificial photosynthesis and efficient electron transport in biological energy chains require reduction of the reorganization energy to allow fast transitions. This review article discusses the mechanisms of how small values of the reorganization energy are achieved in protein electron transfer and how similar mechanisms can operate in other media, such as nonpolar and ionic liquids. One of the major mechanisms of reorganization energy reduction is through non-Gibbsian (nonergodic) sampling of the medium configurations on the reaction time. A number of alternative mechanisms, such as electrowetting of active sites of proteins, give rise to non-parabolic free energy surfaces of electron transfer. These mechanisms and nonequilibrium population of donor-acceptor vibrations lead to a universal phenomenology of separation between the Stokes-shift and variance reorganization energies of electron transfer. 

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2. Energy Dissipation in Electron-only Reconnection

   https://doi.org/10.3847/1538-4357/ad2769  

   Roy, S.; Bandyopadhyay, R.; Matthaeus, W. H.; Pyakurel, P. S. (March 2024, The Astrophysical Journal)

   Abstract Magnetic reconnection is a fundamental process in space and astrophysical plasmas that converts magnetic energy to particle energy. Recently, a novel kind of reconnection, called electron-only reconnection, has been observed in Earth's magnetosheath plasma. A defining characteristic of electron-only reconnection is that electron jets are observed but ion jets are absent. This is in contrast with traditional ion-coupled reconnection, where both ions and electrons exhibit outflowing velocity jets. Findings from the Magnetospheric Multiscale mission observations and particle-in-cell simulations show clear signatures of electron heating in electron-only reconnection events, while ions are not heated or cooled in these events. This result is unlike ion-coupled reconnection, where both ions and electrons are heated to varying degrees. The ratio of electron to ion dissipation increases with the local magnetic curvature, indicating that the partition of heat into ions and electrons is dependent on the current-sheet thickness. 

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3. Continuous Wave Resonant Photon Stimulated Electron Energy-Gain and Electron Energy-Loss Spectroscopy of Individual Plasmonic Nanoparticles

   https://doi.org/10.1021/acsphotonics.9b00830  

   Liu, Chenze; Wu, Yueying; Hu, Zhongwei; Busche, Jacob A.; Beutler, Elliot K.; Montoni, Nicholas P.; Moore, Thomas M.; Magel, Gregory A.; Camden, Jon P.; Masiello, David J.; et al (September 2019, ACS Photonics)
4. A Low-Energy Counting Electron Spectrometer Integrated into a Scanning Electron Microscope

   Simonaitis, John; Krielaart, Maurice; Slayton, Benjamin; Alongi, Joseph; Yang-Keathley, Yugu; Berggren, Karl; Keathley, Phillip D. (June 2023, 2023 International Conference on Electron, Ion and Photon Beam Technology and Nanofabrication (EIPBN))
5. Instrument Optimization of a High-Energy Electron Energy-loss Spectrometry System in an Aberration-Corrected Scanning Transmission Electron Microscope

   https://doi.org/10.1093/mam/ozae044.685  

   Watanabe, Masashi; Campos-Quiros, Alexander; Guzzinati, Giulio; Kükelhan, Pirmin; Gerheim, Volker; Linck, Martin; Müller, Heiko; Haider, Max; Hoffman, Thomas F; Sakaguchi, Kotaro; et al (July 2024, Microscopy and Microanalysis)