In this study, electrical properties of four metals (W, Mo, Au, Ni) as Schottky contacts on n-type (100)-oriented β-Ga2O3 substrates grown by the Czochralski method are reported. The Schottky barrier heights for each metal contact were calculated from I-V and/or C-V measurements. Two methods were used to cross check the Schottky barrier heights (φB) and ideality factors (n) calculated from I-V measurements. The Schottky barrier height values calculated from C-V and I-V measurements showed excellent agreement with each other and increased with an increase in the metal work functions. Some anomalous behavior of Au contacts, which is similar to behavior reported on (010)-oriented β-Ga2O3, is also described.
characterize membrane remodeling induced by other pore forming peptides such as a mutant derivative of the bee venom peptide melittin in supported lipid bilayers (Langmuir 34: 28 (2018)). The data revealed time dynamic interconversion between membrane-thinned and pore-like states, as well as colocalization between these different modes of membrane remodeling. Here, we use AFM imaging to characterize the lipid bilayer remodeling induced by pHD108. Studies of pHD108 conducted on supported POPC bilayers at differing pH revealed pH-dependent membrane distortions including punctate pore-like features. To provide a broader mechanistic picture, single molecule AFM imaging results are placed in context with other measurements (e.g., leakage assays) performed on the same peptide/membrane system.
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