Continuous Liquid Interface Production (CLIP): 3D Printing at the Intersection of Materials, Process and Design

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Topic: 
Continuous Liquid Interface Production (CLIP): 3D Printing at the Intersection of Materials, Process and Design
Thursday, February 3, 2022 - 5:30pm to 6:30pm
Venue: 
Hewlett 103
Speaker: 
Joseph DeSimone - Stanford University
Abstract / Description: 

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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’ 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 technologies in the microelectronics and drug/vaccine delivery areas, including novel microneedle designs as a potent vaccine delivery platform. 

Bio: 

DeSimone joined Stanford University after a 30-year career in NC where he was the Chancellor’s Eminent Professor of Chemistry at UNC and the William R. Kenan, Jr. Distinguished Professor of Chemical Engineering at NCSU.  DeSimone and his trainees have made significant scientific breakthroughs in green chemistry, medical devices, nanotechnology, and most recently in 3D printing.  He mentored over 80 students through Ph.D. completion at UNC and NCSU, half of whom were women and members of underrepresented groups in STEM.  An author of over 370 scientific publications with over 42,000 citations to his work, DeSimone is a named inventor on >200 issued patents.  He has co-founded several companies including BVS (biodegradable stent; sold to Guidant, then Abbott); Liquidia Technologies (precision medicines for pulmonary diseases; NASDAQ: LQDA); Blue Current (solid-state batteries); Advanced Chemotherapy Technologies (interventional oncology targeting pancreatic cancer); and Carbon (3D printing that is taking the industry from a prototyping-only industry to digital manufacturing). In recognition of his entrepreneurial success, he was selected as the 2019 EY Entrepreneur of the Year National Overall winner. Chemical & Engineering News named Carbon their Company of the Year for 2019.  DeSimone has achieved international recognition as a scientist, inventor, and entrepreneur, earning major accolades including the U.S. Presidential Green Chemistry Challenge Award, 2017 Heinz Award and the $500,000 Lemelson-MIT Prize.  He is one of only 25 individuals elected to all three U.S. National Academies—the National Academy of Sciences, Medicine, and Engineering.  In 2016 President Obama presented him the National Medal of Technology and Innovation.

Group Website: https://desimonegroup.stanford.edu/