Biologically Derived Magnetite Nanoparticles (mNPs) for Use in Electromagnetic Pulse Shielding
Technical Report,01 Apr 2018,31 Oct 2018
Combat Capabilities Development Command Chemical Biological Center Abingdon United States
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Modern electronic warfare illustrates the need for innovative yet flexible electromagnetic pulse EMP protective capabilities for field-forward electronic equipment and components. The iron ore magnetite is a naturally occurring magnetic rock that can absorb radiation energy. Traditional magnetite nanoparticles mNPs produced using physical or chemical means have superparamagnetic properties and are an effective material for radiation shielding. New interest in mNPs from living organisms has arisen after it was discovered that biologically derived mNPs have qualities superior to abiotically produced mNPs, such as high chemical purity, low toxicity, good biocompatibility, and environmentally friendly production. Here, the bacterial mNP producer Magnetospirillum gryphiswaldense was used in large-scale microbially derived mNP production, delivering a new material production and functionalization capability to the U.S. Army Edgewood Chemical Biological Center now the U.S. Army Combat Capabilities Development Command Chemical Biological Center CCDC CBC Aberdeen Proving Ground, MD. These milled and characterized mNPs could eventually be incorporated into an environmentally friendly, soy-based foam to make a customizable and sprayable EMP protective material. In the future, CCDC CBCs investments in synthetic biology, protein engineering, additive manufacturing, and materials science may leverage these mNPs to develop new materials and manufacturing capabilities across the CCDC CBC enterprise.
- Nuclear Radiation Shielding, Protection and Safety