Naigeng Chen defends PhD thesis

Naigeng Defense HandshakeCongratulations to Naigeng Chen for passing his B-exam yesterday with flying colors! His thesis entitled “Experimental and Computational Study of Non-woven Damage Mechanics” is well, a comprehensive experimental and computational study of non-woven damage mechanics, using a commercial polypropylene non-woven series (Typar SF) as his experimental system. This picture from right after the deliberations might seem like a highly posed congratulatory hand shake with committee member Prof Paul Dawson, but really its a candid shot of committee member Prof Leigh Phoenix with the thesis draft.

 

 

 

Medical Implant Paper out in PNAS

Our collaborative work with Minglin Ma’s group (Cornell Biological and Environmental Engineering) on a potential medical treatment for type 1 diabetes is now published in PNAS. The paper entitled “Designing a retrievable and scalable cell encapsulation device for potential treatment of type 1 diabetes” was led by Minglin’s PhD students Duo An and Alan Chiu. Our research group provided analysis of the mechanical robustness of each of the thread designs. This mechanical durability of the treatment delivery device is essential for its retrievability. Please see the Cornell press release for more information.

Welcome to new graduate students!

Advisor matching season is coming to a close and we have three new PhD candidates in the MMD lab. Welcome to Michael Buche, Steven Yang, and Joy Zhang who come from the fields of Theoretical and Applied Mechanics, Mechanical Engineering, and Materials Science and Engineering respectively.

Bond Strength Determination Manuscript

Naigeng’s work on determining bond strength within non-wovens is now published in Experimental Mechanics. In this meticulous combined experimental and computational effort Naigeng outlines and then validates a method for determining the bond strength distribution within non-wovens formed from fiber-fiber bonds. This method can be used as long as the non-woven can be imaged (e.g. via computed tomography or confocal microscopy) and then mechanically tested. Please contact us if you would like help with implementation.Fig1

Mechanochemistry in Materials book now available

Mechanochemistry in Materials is now available for purchase. This book includes a chapter on mechanochemical transduction in bulk polymers by PI Silberstein and former graduate student Meenakshi Manivannan and also a chapter on mechanophore design for chemical function by collaborator Charles Diesendruck.

Cover

CCMR Jumpstart Funding

Cryomech and the MMD lab have won CCMR Jumpstart funding to investigate polymer seals. Undergraduate Kenneth Fang, who has been working in the lab since last spring, will take the lead on this project. Full story within the Cornell Chronicle.

SCPN Based Thermoplastics

Galant 2017 graphical abstract

Our first experimental paper in our ongoing collaboration with the Diesendruck group on single chain polymer nanoparticles (SCPN) is out in Macromolecules. This manuscript presents the first ever mechanical testing on bulk polymers composed entirely of this novel SCPN architecture for which bulk properties can be tailored by changing the degree of SCPN cross-linking. Or Galant and Suwon Bae worked closely together during Or’s stay in our lab last summer to work out the sample preparation and testing methods that ultimately led to this publication.