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http://dx.doi.org/10.1016/j.jcin.2024.07.039 | DOI Listing |
ACS Appl Mater Interfaces
September 2025
National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
For optoelectronic devices based on lead-halide perovskites and other semiconductors, a comprehensive understanding of the electric field influences on the carrier transport characteristics is critical to the optimization of their practical performances. To fulfill this challenging goal, here we have employed photoluminescence spatial image and transient absorption microscopy measurements on an individual CsPbBr microplate biased at external voltages in an Au/CsPbBr/Au device. At the subpicosecond time scale, some photogenerated excitons are dissociated into free electrons and holes that drift toward the electrodes to leave behind unfilled defect sites, which are capable of scattering the residual excitons to yield a reduced diffusion coefficient.
View Article and Find Full Text PDFJBJS Essent Surg Tech
August 2025
Department of Orthopaedics, Faculty of Medicine, St. Paul's Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
Background: Over the last 30 years, total ankle arthroplasty (TAA) has become a viable surgical option for end-stage ankle arthritis. The aim of TAA is to relieve pain and preserve ankle joint range of motion, which, by definition, shields adjacent joints. Alignment is essential for the longevity and survival of TAA, since malalignment of TAA components can cause abnormal loading patterns with subsequent polyethylene wear and early implant failure.
View Article and Find Full Text PDFACS Omega
August 2025
School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China.
Regarding the incomplete understanding of the influence mechanisms of microstructural differences in coal on outburst propensity, this study selected typical outburst and nonoutburst coal samples for comparative experimental investigations. The microchemical and pore structure characteristics of coal samples were systematically characterized through analytical techniques including Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), and low-temperature liquid nitrogen adsorption experiments to elucidate how these microstructural features influence their outburst propensity. The results of the study show that outburst coal samples possess a higher degree of aromaticity, with hydrogen atoms migrating to new chemical environments that give rise to abundant, low-crystallinity nascent primary aromatic hydrocarbons and substantial CH generation.
View Article and Find Full Text PDFUltrasonics
December 2025
Department of Industrial, Manufacturing, and Systems Engineering, Texas Tech University, Lubbock, TX 79409, USA. Electronic address:
Silicon plays a crucial role in today's digital world, particularly in the semiconductor industry. Micro-hole machining is essential in manufacturing different silicon-based semiconductor devices including sensors, actuators, and microsystems. However, silicon's high brittleness poses significant machining challenges such as reduced machinability, rapid tool wear, and the risk of cracking.
View Article and Find Full Text PDFPhys Rev Lett
June 2025
St. Petersburg State University, Spin Optics Laboratory, 198504 St. Petersburg, Russia.
We report on the first observation of spin noise in a strongly birefringent semiconductor-halide perovskite single crystal MAPbI_{3}. The observed spin noise resonance is attributed to resident free holes in the bulk of the crystal with one of the longest spin dephasing times T_{2}=4 ns. The spin dynamics is found to be affected by the residual light absorption of the crystal providing renormalization of the Larmor frequency.
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