You can build something cheaper and more customizable with an ESP32 or a Raspberry Pi, and that's what I did. It's beautiful, it's easy, and incredibly versatile. If you want to get started, I'll be ...

High-responsivity and low dark current resonant-cavity-enhanced (RCE) Ge PIN photodiodes with a monolayer graphene absorber were demonstrated on a 200 mm insulator. Ge was grown on the donor Si wafer, ...