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1. H trapping at the metastable cation vacancy in α -Ga ₂ O ₃ and α -Al ₂ O ₃

   https://doi.org/10.1063/5.0094707  

   Venzie, Andrew; Portoff, Amanda; Stavola, Michael; Fowler, W. Beall; Kim, Jihyun; Jeon, Dae-Woo; Park, Ji-Hyeon; Pearton, Stephen J. (May 2022, Applied Physics Letters)

   α-Ga 2 O 3 has the corundum structure analogous to that of α-Al 2 O 3 . The bandgap energy of α-Ga 2 O 3 is 5.3 eV and is greater than that of β-Ga 2 O 3 , making the α-phase attractive for devices that benefit from its wider bandgap. The O–H and O–D centers produced by the implantation of H + and D + into α-Ga 2 O 3 have been studied by infrared spectroscopy and complementary theory. An O–H line at 3269 cm −1 is assigned to H complexed with a Ga vacancy (V Ga ), similar to the case of H trapped by an Al vacancy (V Al ) in α-Al 2 O 3 . The isolated V Ga and V Al defects in α-Ga 2 O 3 and α-Al 2 O 3 are found by theory to have a “shifted” vacancy-interstitial-vacancy equilibrium configuration, similar to V Ga in β-Ga 2 O 3 , which also has shifted structures. However, the addition of H causes the complex with H trapped at an unshifted vacancy to have the lowest energy in both α-Ga 2 O 3 and α-Al 2 O 3 . 

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2. Boron‐Made N ₂ : Realization of a B≡B Triple Bond in the B ₂ Al ₃ ⁻ Cluster

   https://doi.org/10.1002/chem.202001159  

   Fedik, Nikita; Mu, Chaonan; Popov, Ivan A.; Wang, Wei; Wang, Jie; Wang, Haopeng; Bowen, Kit H.; Boldyrev, Alexander I.; Zhang, Xinxing (June 2020, Chemistry – A European Journal)
3. Final results for the neutron β -asymmetry parameter A ₀ from the UCNA experiment

   https://doi.org/10.1051/epjconf/201921904004  

   Plaster, B.; Adamek, E.; Allgeier, B.; Anaya, J.; Back, H.O.; Bagdasarova, Y.; Berguno, D.B.; Blatnik, M.; Boissevain, J.G.; Bowles, T.J.; et al (January 2019, EPJ Web of Conferences)

   The UCNA experiment was designed to measure the neutron β-asymmetry parameter A 0 using polarized ultracold neutrons (UCN). UCN produced via downscattering in solid deuterium were polarized via transport through a 7 T magnetic field, and then directed to a 1 T solenoidal electron spectrometer, where the decay electrons were detected in electron detector packages located on the two ends of the spectrometer. A value for A 0 was then extracted from the asymmetry in the numbers of counts in the two detector packages. We summarize all of the results from the UCNA experiment, obtained during run periods in 2007, 2008–2009, 2010, and 2011–2013, which ultimately culminated in a 0.67% precision result for A 0 . 

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4. Rupture Directivity of the 2021 M _W 6.0 Yangbi, Yunnan Earthquake

   https://doi.org/10.1029/2022JB024321  

   Gong, Wenzheng; Ye, Lingling; Qiu, Yuxin; Lay, Thorne; Kanamori, Hiroo (September 2022, Journal of Geophysical Research: Solid Earth)
5. Thermal Conductivity of β-Phase Ga ₂ O ₃ and (Al _x Ga _{1– x} ) ₂ O ₃ Heteroepitaxial Thin Films

   https://doi.org/10.1021/acsami.1c08506  

   Song, Yiwen; Ranga, Praneeth; Zhang, Yingying; Feng, Zixuan; Huang, Hsien-Lien; Santia, Marco D.; Badescu, Stefan C.; Gonzalez-Valle, C. Ulises; Perez, Carlos; Ferri, Kevin; et al (August 2021, ACS Applied Materials & Interfaces)