X-ray detector with interdigitated network

A device for detecting radiation, comprising:

• a first electrode having a first plurality of fingers comprising a nanotube material;
• a second electrode having a second plurality of fingers comprising a nanotube material, the second plurality of fingers being interdigitated with the first plurality of fingers;
• a voltage source configured to apply a voltage across the first and second electrodes;
• a chamber containing the first and second electrodes and a gas, at least one wall of the chamber enabling passage of radiation external to the chamber;
• and
• a detection circuit configured to detect radiation within the chamber based on a change in current across the first and second electrodes resulting from ionization of the gas by the radiation.