Apparatus systems and methods of sensing chemical bio-chemical and radiological agents using electrophoretic displays

摘要

Caesium-137 irradiates electronic paper. An incoming gamma-ray from the Cs-137 interacts with a particle inside a micro-container by generating a recoil electron and/or a hole. Because the recoil electron physically leaves the particle, the particle is charged depending on the dose from the radiation source. And, the charge of the particles change, which results in a movement of the particles within the micro-container. After refreshing the electronic paper, a visible difference in the gray-scale can be seen. Thus, the visible difference in the gray-scale is an effect caused by the irradiation of the electronic paper, showing sensitivity to high energy radiation—thus, non-optimized electronic paper is sensitive to high energy radiation and can be used as a radiation dosimeter. In addition, electronic paper can be used for sensing chemical and bio-chemical agents, as well as detecting high energy radiation.

主权项

1. A device comprising:
a film laminated to a substrate, wherein the film comprises microcontainers containing:
a liquid;particles comprising tungsten or CdTe; andcarbon particles;
wherein the tungsten or CdTe particles and the carbon particles are in a colloidal suspension in the liquid; and a voltage source coupled to the film capable of applying an electric field across the film; and a color scale indicating color changes in the film corresponding to one or more levels of exposure to gamma rays.