Speaker: Bryan Kaehr, Staff Scientist

Affiliation: Advanced Materials Laboratory, Sandia National Laboratories

Multiphoton Lithography and Laser Direct Write Approaches for Material Synthesis and Patterning

The widespread interest in free-form fabrication and digital printing may broadly redefine technology and manufacturing, yet current approaches are compatible with only a limited set of materials. Our group is primarily focused on developing material syntheses for laser-direct write additive manufacturing to address optical, electronic and catalytic applications, with an emphasis on the high-resolution 3D printing approach of multiphoton lithography (MPL). For this talk, I will discuss the emergence of this technique, current outlook and technology, as well as challenges and (attempted) solutions to expand the library of materials. Other laser direct write chemistries will be considered including high – (metals, oxides) and low temperature (halide perovskites, charge-transfer liquid crystals) as well as developing transformational chemistries using lithographic and biologically – defined templates.

About the Speaker

Bryan Kaehr is a Staff Scientist at the Advanced Materials Laboratory, Sandia National Laboratories in Albuquerque, NM. Previously he held the President Harry S. Truman Fellowship in National Security Science and Engineering (2008-2011) at Sandia. Dr. Kaehr obtained his B.S. degree from the University of New Mexico and received his Ph.D. (2007) from the University of Texas at Austin, Department of Chemistry, supervised by Prof. Jason Shear. His current research is focused on materials development for contact (gravure, flexo) and direct write printing, including multiphoton, stereo and biomimetic lithographies.