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Enhanced high-energy proton radiation hardness of ZnO thin-film transistors with a passivation layer.
Nano Converg
January 2025
Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeolabuk-do, 56212, Republic of Korea.
Metal-oxide thin-film semiconductors have been highlighted as next-generation space semiconductors owing to their excellent radiation hardness based on their dimensional advantages of very low thickness and insensitivity to crystal structure. However, thin-film transistors (TFTs) do not exhibit intrinsic radiation hardness owing to the chemical reactions at the interface exposed to ambient air. In this study, significantly enhanced radiation hardness of AlO-passivated ZnO TFTs against high-energy protons with energies of up to 100 MeV is obtained owing to the passivation layer blocking interactions with external reactants, thereby maintaining the chemical stability of the thin-film semiconductor.
View Article and Find Full Text PDFMicroiontophoretic Application of Dynorphin in Dental Pain: Excitatory or Inhibitory Effects.
J Pain Res
January 2025
Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea.
Background: The tooth exhibits increased sensitivity to noxious stimuli due to the dense innervation of thin myelinated Aδ fibers and unmyelinated C fibers within the dental pulp. While prior research has identified dynorphin expression in layers I-II of the dorsal horn across the spinal cord in various pain models, its functional role in trigeminal nociception, including tooth pain, remains underexplored. This study examines the potential role of dynorphin in the nociceptive processing of dental stimuli.
View Article and Find Full Text PDFExploring the Fluorescence Bioactive Compounds in the Coelomic Fluid of Earthworms: Insights into Their Structural, Spectroscopic, and Functional Properties for Biomedical Applications.
J Oleo Sci
January 2025
Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology.
Coelomic fluid of earthworms is a valuable source of novel bioactive compounds with therapeutic applications. To gain insight into the bioactive compounds in the coelomic fluid, this study used Perionyx excavatus, a tropical earthworm distinguished for its remarkable ability for regeneration. This study aimed to identify fluorescent bioactive compounds in the coelomic fluid of P.
View Article and Find Full Text PDFExperimental and computational analysis of lipophilicity and plasma protein binding properties of potent tacrine based cholinesterase inhibitors.
J Chromatogr B Analyt Technol Biomed Life Sci
January 2025
University of Belgrade-Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, Njegoševa 12, 11000 Belgrade, Republic of Serbia. Electronic address:
The lipophilicity of thirteen tacrine/piperidine-4-carboxamide derivatives was assessed using reversed-phase thin-layer chromatography (RP-TLC) with MeOH and acetonitrile (ACN) as organic modifiers. Among the parameters evaluated, the R and C values obtained using MeOH were identified as the most reliable for characterizing the lipophilicity of the investigated compounds. The observed differences in lipophilicity among the derivatives resulted from a delicate interplay of substituent effects (hydrophobicity, polarity, steric hindrance, and electronic effects), positional influence, and characteristics of the organic modifier.
View Article and Find Full Text PDFSelective Undercut of Undoped Optical Membranes for Spin-Active Color Centers in 4H- Silicon Carbide.
ACS Nano
January 2025
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States.
Silicon carbide (SiC) is a semiconductor used in quantum information processing, microelectromechanical systems, photonics, power electronics, and harsh environment sensors. However, its high-temperature stability, high breakdown voltage, wide bandgap, and high mechanical strength are accompanied by a chemical inertness, which makes complex micromachining difficult. Photoelectrochemical (PEC) etching is a simple, rapid means of wet processing SiC, including the use of dopant-selective etch stops that take advantage of the mature SiC homoepitaxy.
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