Patent ID: 8809979

Claim:
A radiation sensor comprising: a) a layer of radiatively modified functionalized carbon nanotube-polymer composite material, wherein the radiatively modified functionalized carbon nanotube-polymer composite material comprises functionalized carbon nanotubes, wherein the functionalized carbon nanotubes are non-conductive, wherein the functionalized carbon nanotubes are sensitive to exposure to radiation, and wherein the functionalized carbon nanotubes comprise fluorinated carbon nanotubes, wherein the radiatively modified functionalized carbon nanotube-polymer composite material comprises defunctionalized carbon nanotubes, wherein the defunctionalized carbon nanotubes are conductive, and wherein the defunctionalized carbon nanotubes comprise defluorinated carbon nanotubes, and wherein the radiatively modified functionalized carbon nanotube-polymer composite material is modified through a process comprising exposure to a radiation source, wherein the radiation source is selected from the group consisting of ultraviolet radiation, infrared radiation, X-ray radiation, gamma ray radiation, protons, neutrons, electrons, alpha particles, heavy ions, cosmic radiation, solar wind, and combinations thereof; produced by radiative modification, and wherein the defunctionalized carbon nanotubes are conductive; and b) a device monitoring radiation-sensitive electrical properties across the layer of radiatively modified functionalized carbon nanotube-polymer composite material, wherein said device detects a change in radiation-sensitive electrical properties to monitor exposure of the radiation sensor to radiation.