MateriAlZ Seminar: Joseph Desimone
Friday, October 22, 2021, 11:00 am MST
Joseph M. Desimone
Sanjiv Sam Gambhir Professor
Translational Medicine and Chemical Engineering
Stanford University
"Digital Manufacturing of Polymer Products: Convergence of Hardware, Software, and Materials"
Zoom link. Passcode: 756959
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Abstract
The production of polymer products relies largely on age-old molding techniques. A major reason for this is that additive methods have not delivered meaningful alternatives to traditional processes—until now. In this talk, I will describe Continuous Liquid Interface Production (CLIP) technology, which embodies a convergence of advances in software, hardware, and materials to bring the digital revolution to polymer additive manufacturing. CLIP uses software-controlled chemistry to produce commercial quality parts rapidly and at scale by capitalizing on the principle of oxygen-inhibited photopolymerization to generate a continual liquid interface of uncured resin between a forming part and a printer’s exposure window. Instead of printing layer-by-layer, this allows layerless parts to ‘grow’ continuously from a pool of resin, formed by light. Compatible with a wide range of polymers, CLIP opens major opportunities for innovative products across diverse industries. Previously unmakeable products are already manufactured at scale with CLIP, including the large-scale production of running shoes by Adidas (Futurecraft 4D); mass-customized football helmets by Riddell; the world’s first FDA approved 3D printed dentures; and numerous parts in automotive, consumer electronics, and medicine. At Stanford, we are pursuing new advances including digital therapeutic devices in pediatric medicine, new multi-materials printing approaches, recyclable materials, and the design of a high-resolution printer to advance novel microneedle designs as a potent vaccine delivery platform. CLIP also creates valuable opportunities for product light-weighting and de-materialization, accelerated product design cycles, and local-for-local manufacturing.
Bio
Joseph M. DeSimone is the Sanjiv Sam Gambhir Professor of Translational Medicine and Chemical Engineering at Stanford. He holds appointments in the Departments of Radiology, Chemical Engineering, Chemistry (by Courtesy), and the Graduate School of Business (by Courtesy). Previously, he was a faculty member at UNC-Chapel Hill and NC State University. He is also Co-founder, Board Chair, and former CEO (2014 - 2019) of the additive manufacturing company, Carbon. DeSimone is responsible for numerous breakthroughs in his career in areas including green chemistry, medical devices, nanomedicine, and 3D printing. He has published over 350 papers and holds over 200 patents. Additionally, he has mentored 80 students through Ph.D. completion, half of whom are women and members of underrepresented groups in STEM. In 2016 DeSimone was recognized by President Obama with the National Medal of Technology and Innovation. He is also a member of all three branches of the U.S. National Academies (Sciences, Medicine, Engineering). DeSimone received his BS in Chemistry from Ursinus College (1986) and his Ph.D. in Chemistry from Virginia Tech (1990).