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

Patent image
NRL

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.

Inventors: 
Christophersen, Marc; Phlips, Bernard F.
Patent Number: 
Technical domain: 
Environmental Technology
FIle Date: 
2011-02-02
Grant Date: 
2015-09-08
Grant time: 
1,679 days
Grant time percentile rank: 
30
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY