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MSE Colloquium Series: Joseph DeSimone (Carbon, Inc.)

January 17, 2020 - 3:00pm to 4:15pm
McCullough Building, Room 115

Title: Digital Light Synthesis to Drive Additive Manufacturing: Convergence of Hardware, Software, and Molecular Science

Speaker: Joseph M. DeSimoneCarbon, Inc., Redwood City, California & Department of Chemistry, University of North Carolina at Chapel Hill & Department of Chemical and Biomolecular Engineering, North Carolina State University

Abstract:

In many ways, manufacturing processes define what’s possible in society. Opportunities to make things that can improve the health and well being of society are central to our interests to develop scalable methods that can make complex structures more economically than in the past. This lecture will describe a new advance in additive manufacturing (AM), referred to as Digital Light Synthesis (DLS), which is rapid, uses materials that have the requisite properties to yield final parts, and is economically competitive. Our approach promises to advance the AM industry beyond basic prototyping, which is what 3D printing has primarily been limited to, to truly enable the manufacture of polymeric parts without molds. DLS holds the potential to truly change how polymeric products are designed, engineered, made and delivered.

DLS harnesses light and oxygen to continuously grow objects from a pool of resin instead of printing them layer-by-layer. DLS capitalizes on the fundamental principle of oxygen inhibited photopolymerization to generate a continual liquid-interface of uncured resin between the growing part and the exposure window allowing for resin renewal at the build interface. The DLS technology raises the state-of-the-art in additive manufacturing in three ways:

  • GAME-CHANGING SPEED: 25-100 times faster than conventional 3D printing
  • COMMERCIAL QUALITY: produces objects whose mechanical properties are intrinsically isotropic and independent of print orientation
  • MATERIAL CHOICE: enables a broad range of polymeric materials

The combination of performance and speed has enabled many important use cases to emerge including large scale manufacture of running shoes by Adidas (FutureCraft 4D); new high performance, mass-customized liners for football helmets that raises the bar for head protection; the world’s first FDA-approved dentures and other dental products; and numerous parts in the automotive, consumer electronics, aerospace and other medical fields.

See "More Information" link below for speaker bio

Event Sponsor: 
Materials Science and Engineering
Contact Email: 
jdwilson@stanford.edu

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