Microchip-Acidbath Hardware Porn

Zeptobar ist ein Hardware-Entwicklungs aus Russland und die zeigen auf ihrer Website, wie man einen Chip mit Schwefelsäure öffnet. Dann haben sie die Innereien in riesig aufgelösten Fotos festgehalten: Hardware Porn.

Take some microchips of interest and add concentrated sulfuric acid. Container should be closed, but not airtight, so that fumes can escape (that is extremely important). Heat it to boiling temperature (300 °C). White substance at the bottom is baking soda – it’s here to neutralize accidental spills and part of fumes. After 30-40 minutes, acid “burns” plastic to carbon.

After it cools down, we can sort what is ready for next step and what needs another acid bath (thick, bulky packages usually need 2-3 rounds). If pieces of carbon stuck to the microchip itself and cannot be removed mechanically, one can remove them in hot concentrated nitric acid (temperature is much lower, ~110-120 °C).

Boiling acid used to see chip die (via Hackaday)