麻豆视频

Diffusive photopolymers were first developed by Bruce Booth at听for holography. We use a two-polymer approach introduced by Lisa Dhar and colleagues at听. These materials contain two monomers, in which the first monomer is thermally or optically gelled, providing a physical scaffold to support encapsulated elements or photo-patterned index structures. Linear (one photon) absorption of incident light polymerizes the second monomer, locally depleting it in the exposed region. This causes diffusional mass transport of unreacted monomer into the exposed region, resulting in an increased material density and index of refraction. A post-exposure optical flood cure bleaches remaining initiator and cross-links all remaining monomer, yielding stable, permanent index structures. The final state of the polymer can be compliant to accommodate thermal expansion or glassy for greater robustness. Deep, 3D index patterns are possible because no wet processing is required - the index structures self-develop after optical exposure.听

The team

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• M. D. Alim, D. J. Glugla, S. Mavila, C. Wang, P. D. Nystrom, A. C. Sullivan, R. R. McLeod, C. N. Bowman, 鈥�,鈥澨鼳CS Applied Materials & Interfaces听10, pp. 1217-1224,听2018
• D. J. Glugla, M. B. Chosy, M. D. Alim, K. K. Childress, A. C. Sullivan, R. R. McLeod, 鈥�,鈥澨齇ptics Letters 43, pp. 1866-1869, 2018
• H. Peng, C. Wang, W. Xi, B. A Kowalski, T. Gong, X. Xie, W. Wang, D. P. Nair, R. R. McLeod, C. N. Bowman,听听Chemistry of Materials 26, pp. 6819鈥�6826, 2014.
• Benjamin A. Kowalski, Adam C. Urness, Martha-Elizabeth Baylor, Michael C. Cole, William L. Wilson, Robert R. McLeod,听,鈥� Optics Materials Express 4, pp. 1668-1682, 2014.
• Ben Kowalski, Doctor of Philosophy in Electrical Engineering,听, University of Colorado, 2014.

This work has been generously funded by

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