I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...

The photograph shows a one-inch, single-crystal lead sulfide (PbS) film wafer (left). The right panel demonstrates a clear infrared image of a university emblem and Chinese characters, captured at ...

Imagine an infrared sensor that works straight out of the box — no cryogenic cooling, no bulky hardware, no steep price tag. That’s exactly what researchers from the MEMS, Microfluidics and ...