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Opportunity at National Institute of Standards and Technology (NIST)

Simulation of Light Transmission (Photon Migration) within Particle-Filled Composites for Predicting Photopolymerization Efficiency


Material Measurement Laboratory, Biosystems and Biomaterials Division

RO# Location
50.64.41.B7807 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.


Name E-mail Phone
Chiang, Martin Y.M. martin.chiang@nist.gov 301.975.5186


Photopolymerized composites are widely used from structural materials to biomaterials. We are interested in how photons (light) affect the extent of polymerization (in terms of degree of conversion and/or network structure) in particle-filled composites and how it influences physical and mechanical properties. Light-curing efficiency can be affected by several factors, including the chemistry and properties of reactive monomers or oligomers, as well as filler type, composition, and size distribution. To date, examinations of composite curing efficiency have mainly focused on experimental studies; therefore, if a change in composite design parameters is required, a high cost for time and materials is incurred. Our approach is to develop a numerical simulation suitable for predicting the photo-curing of polymers and optimizing the photopolymerization process.


Simulation; Modeling; Polymerization; Light transmission; Photon migration; Composites; Photo Cure;


Citizenship:  Open to U.S. citizens
Level:  Open to Regular applicants
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