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Direct Observation of Substantial Phonon Nonequilibrium Near Nanoscale Hotspots in Gallium Nitride.
Adv Sci (Weinh)
January 2025
School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei, 430072, P. R. China.
Phonon modal nonequilibrium is believed to widely exist around nanoscale hotspots, which can significantly affect the performance of nano-electronic and optoelectronic devices. However, such a phenomenon has not been explicitly observed in 3D device semiconductors at the nanoscale. Here, by employing a tip-enhanced Raman thermal measurement approach, substantial phonon nonequilibrium in gallium nitride near sub-10 nm laser-excited hotspots is directly revealed for the first time.
View Article and Find Full Text PDFFlexible Synaptic Memristors With Controlled Rigidity in Zirconium-Oxo Clusters for High-Precision Neuromorphic Computing.
Adv Sci (Weinh)
January 2025
School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
Flexible memristors are promising candidates for multifunctional neuromorphic computing applications, overcoming the limitations of conventional computing devices. However, unpredictable switching behavior and poor mechanical stability in conventional memristors present significant challenges to achieving device reliability. Here, a reliable and flexible memristor using zirconium-oxo cluster (ZrOOH(OMc)) as the resistive switching layer is demonstrated.
View Article and Find Full Text PDFImaging Lessons From Multidisciplinary Team Meetings at a Quaternary Referral Center: A Case-Based Review of Radiology Findings in Complex Adult Congenital Heart Disease.
Echocardiography
January 2025
Radiology Department, Liverpool Heart and Chest Hospital NHS Foundation Trust, Liverpool, UK.
Optimal management of adult congenital heart disease (ACHD) requires a multidisciplinary team (MDT) approach, fostering a collaborative culture over an individualistic approach. Within this framework, subspecialty-trained radiologists provide crucial imaging expertise, supporting cardiologists, surgeons, and interventional cardiologists in diagnoses, treatment planning, and follow-up evaluations. Advanced imaging tools and a nuanced understanding of surgical and interventional procedures enable radiologists to provide valuable insights to clinicians.
View Article and Find Full Text PDFPrediction of Cyclic O Molecules Stabilized by Helium under Pressure.
Adv Sci (Weinh)
January 2025
Center for High-Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, School of Science, Yanshan University, Qinhuangdao, 066004, China.
Oxygen usually exists in the form of diatomic molecules at ambient conditions. At high pressure, it undergoes a series of phase transitions from diatomic O to O cluster and ultimately dissociates into a polymeric O spiral chain structure. Intriguingly, the commonly found cyclic hexameric molecules in other group VIA elements (e.
View Article and Find Full Text PDFA Versatile Dual-Responsive Shape-Memory Gripper via Additive Manufacturing Toward High-Performance Cross-Scale Objects Maneuvering.
Small
January 2025
Department of Materials Physics and New Energy Device School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, China.
Smart grippers serving as soft robotics have garnered extensive attentions owing to their great potentials in medical, biomedical, and industrial fields. Though a diversity of grippers that account for manipulating the small objects (e.g.
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