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                            Funding & Awards
 Encapsulated phase change nanoparticles as thermally-readable covert taggants
Award Information
Awardee
              University of Central Florida
Award #
              2012-DN-BX-K021
Funding Category
              Competitive
Location
                    Orlando, FL
Awardee County
              Orange
Congressional District
              7
Status
              Closed
Funding First Awarded
              2012
Total funding (to date)
              $350,200
Original Solicitation
              NIJ FY 12 Basic Scientific Research to Support Forensic Science for Criminal Justice Purposes
Description of original award (Fiscal Year 2012, $350,200)
There is an unmet forensic need to develop new covert taggants that can be used robustly and effectively by law enforcement to identify criminal/terrorist, track-trace objects, authenticate documents, and detect tamper activities, etc. Although nanoparticles have shown great potentials as covert taggants, the use of nanoparticle to tag each object in a large group of objects is limited due to lack of nanoparticle-specific property, and low level of multiplicity (small coding space). The New Investigator project is to create a new nanoparticle-based covert taggant system, where a panel of phase change nanoparticles (i.e., metals and eutectic alloys) that have sharp and discrete melting peaks will be encapsulated in silica or polymer microspheres, and use as covert taggants (smart dusts). A new signal transduction mechanism (i.e., thermal readout) will be used to readout taggants by detecting solid to liquid phase changes of nanoparticles, where the melting temperature and fusion enthalpy of each type of nanoparticles will be derived by using different scanning calorimetry (DSC). Magnetic or semiconductor nanoparticles will also be encapsulated in microspheres together with phase change nanoparticles, forming multi-functional taggants that can be used to achieve multi-layered authentication. The goals of this project are: (1) to demonstrate that colloid synthesis method can be used to construct millions of unique, information-rich, and covert thermal taggants, (2) to confirm that thermal taggants can be easily incorporated into real world items, and (3) to test whether thermal taggants can be recovered, detected and decoded from tagged items. The unique combination of several characters including high multiplicity, high sensitivity, covertness, low-cost, ease-of-use, track-trace ability, stability, and transferability in thermal taggants allows forensic investigations to be carried out at high efficiency, less risk and low cost. The concept of thermal taggant is new, potentially transformative, and can be applied to many forensic science areas. 
ca/ncf



  
Grant-Funded Publications
        
                      High-Throughput Screening of Coke-Resistant Catalyst with Thermal Barcode
                  Metamorphic barcodes based on lithographically defined microdots incorporating nanoparticles of phase change materials
                  Thermal-optical readout of multi-level thermal emissivity Ge2Sb2Te5 patterns
                  All-Optical Decoder for Rapid and Noncontact Readout of Thermal Barcodes
                  Organic Phase Change Nanoparticles for in-Product Labeling of Agrochemicals
                  Cationic surface modification of gold nanoparticles for enhanced cell uptake and radio-sensitization
                  Nanomaterial-based barcodes
                  Covert thermal barcodes based on phase change nanoparticles
                  Printed multilayer microtaggants with phase change nanoparticles for enhanced labeling security
                  Smart Dusts: Creating a Stealthy, Stable and Statistically Unique Taggant

  
Date Created: August 22, 2012
    
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