1. What I do at MIT including Woodpeckers and How They Avoid Brain Injury Lorna J Gibson Materials Science and Engineering MIT http://lornagibson.org/

2. Background BASc Civil Engineering, University of Toronto 1978 PhD Materials Engineering, Cambridge Univ. 1981 Consulting engineering, Calgary 1981-2 Assistant Professor, Civil Eng. UBC 1982-4 Civil Engineering, MIT 1984-96 Materials Science and Engineering, MIT 1996- Research: Mechanical behavior of cellular solids

3. 3 Engineering Honeycombs Aluminum Paper - resin Ceramic

4. 4 Engineering Foams PolyurethanePolyethylene NickelCopper ZirconiaMullite (combination of alumina and silica) Glass Polyether

5. Applications: Structural sandwich panels Other Applications: Impact protection, thermal insulation, filters, catalyst carriers Hodgson (1973), Human Impact Response Thompson (1961) On Growth and Form

6. 6 Cellular Materials in Medicine Trabecular Bone: Osteoporosis Vajjhala et al. (2000) J Biomech. Eng. 122, 511-15.

7. 7 Cellular Materials in Medicine Tissue Engineering Scaffolds Collagen based (freeze-drying) Polymer (foaming) Polymer (salt leaching) Acellular elastin (ECM with cells removed) Polymer (electrospinning) Polymer (selective laser sintering) Acellular elastin (ECM with cells removed) Pek et al. (2004) Biomaterials 25, 473. Zhang et al. (2003) Tissue Eng. 9, 1143. Sohier et al. (2003) J. Controlled Release 87, 57. Kwon et al. (2005) Biomaterials 26, 3929. Partee et al. (2006) Lu et al. (2004) Biomaterials 25, 5227.

8. 8 Osteochondral Scaffold: Micro-CT Harley et al. (2010) J. Biomed. Mat. Research Part A 92A, 1078.

9. Cellular Materials in Nature CorkBalsa SpongeTrabecular bone CoralCuttlefish bone Iris leafPlant stem

10. 10 Rays Cell Wall Balsa: Modelling Nano-scale Micro-scale Meso-scale Macro-scale Fibers Postdocs: Marc Borrega, Sardar Malek Borrega et al. (2015) Wood Science and Tech. 40, 403

11. Structural Bamboo Products Culm Wall & Bamboo Products: Microstructure Mechanical testing Modelling Predict properties PhD Student: Patrick Dixon

12. Books

13. Teaching: MIT and edX (online) Fall 3.032, 3.032x: Mechanical Behavior of Materials Intro video (3 minute trailer) https://www.edx.org/course/mechanical-behavior- materials-part-1-mitx-3-032-1x https://www.edx.org/course/mechanical-behavior- materials-part-1-mitx-3-032-1x Spring 3.054, 3.054x: Cellular Solids: Structure, Properties, Applications Intro video (3 minute trailer) https://www.edx.org/course/cellular-solids-1- structures-properties-mitx-3-054-1x https://www.edx.org/course/cellular-solids-1- structures-properties-mitx-3-054-1x

14. Woodpecker Video https://www.youtube.com/watch?v=GEDW75ZR H-Y&index=1&list=PLo1wGxoqIti2eou- WydolDpLsjPma716l Interested in educating a broader audience about engineering

15. Robert Hooke Micrographia Video Hooke’s law, springs Hooke – Micrographia – drawings Materials Science and Engineering – relations between material structure and properties https://www.youtube.com/watch?v=zFfVtziLh g4 https://www.youtube.com/watch?v=zFfVtziLh g4