Imagine a T-shirt that could monitor your heart rate or blood pressure. Or a pair of socks that could provide feedback on your running stride.It may be closer than you think, with new research from Washington State University demonstrating a partic ular 3-D ink printing method for so-called smart fabrics that continue to perform well after repeated washings and abrasion tests.

Subwavelength optics delves into the study of light at spatial scales smaller than its wavelength, opening up new possibilities for understanding light–matter interactions. Over the past few decades, significant advancements have been made in the field, ranging from fundamental theories and technologies to practical engineering applications. A special issue in Engineering 2025 reported recent research on various topics such as nonlinear optics, chirality, optical singularities, and so forth.

A new study in Engineering introduces an integrated model. It assesses flood risks to people’s life and property in the lower Yellow River under different floodplain management modes. The research validates the model with real-world events and provides insights for floodplain management.