Uncover the secrets behind the Su‑57’s onboard “spy kit” - integrated video and IR sensors that passively detect threats, guide missiles, and protect from incoming attacks. We show the ...

Handheld radar-based vital signs measurement can significantly expand the practical usefulness of radar in healthcare, and search and rescue applications. This paper presents a novel handheld vital ...

This paper reports a biochemical sensor based on the quasi-bound states in the continuum (quasi-BIC) mode of a reflective secondary metagrating in the visible light band. Different from conventional ...