Smart material prototype challenges Newton's laws of motion

https://phys.org/news/2023-05-smart-material-prototype-newton-laws.html

"electrical signals control direction and intensity energy waves traveling through aircraft without light and small metastructures... controlling radar waves scan specific area objects or managing vibration created by air turbulence from aircraft, monitor health of civil structures such as bridges and pipelines... force and acceleration not going same direction, thereby providing us with an unconventional way to customize the design of an object's structural dynamics, or properties to challenge Newton's second law"

Related: New radar research overcomes nearly century-old trade-off between wavelength and distance resolution

https://phys.org/news/2023-08-radar-century-old-trade-off-wavelength-distance.html