• Ultrahigh Rectification Ratio in an Asymmetric Metal/ Semiconductor/Metal Nanoscale Tunneling Junction: Implications for High-Frequency Rectifiers

• Ultralow-intensity-noise single-frequency fiber-based laser at 780 nm

• Ultrasensitive Flexible Thermal Sensor Arrays based on High-Thermopower Ionic Thermoelectric Hydrogel

• Ultra-strong bond interface in additively manufactured iron-based multi-materials

• Ultrafast Photoisomerization of Ethylene Studied Using Time-Resolved Extreme Ultraviolet Photoelectron Spectroscopy

• Ultrawideband De-Embedding Calibration for Magnetic Field Probes by Using Symmetric GCPW Calibrators

• Ultrastretchable, Highly Conductive, Rapid Self-Recovery, and Antiswelling Hydrogels as Multifunctional Wearable Electronic Devices

• Ultrafast Fabrication of Graphene-Reinforced Nanocomposites via Synergy of Steam Explosion and Alternating Convergent-Divergent Flow

• Ultrahigh in-plane thermal conductive epoxy composites by cellulose-supported GnPs@PDA skeleton under stress-induced orientation strategy

• Ultrastrong and High Thermal Insulating Porous High-Entropy Ceramics up to 2000 °C