Welcome to new MMD lab members

Welcome to new MS candidate Prathamesh and undergraduates Allison and Yunyun! Also, a quite belated congratulations to former MMD member Zelin now employed at Cummins, for graduating with his MS this past spring.

The Effect of Intrachain Cross-Linking for Glassy Polymers

Bae_SCPNGlassyMD_graphabstrSuwon Bae’s new paper is now out in Macromolecules. This manuscript presents his molecular dynamics simulations examining the thermo-mechanical behavior of glassy polymers assembled from single chain polymer nanoparticles. Suwon’s simulations showed surprisingly good agreement with our earlier experimental work on the same class of materials. This is our third paper in our ongoing collaboration with the Diesendruck group at The Technion, stay tuned for the fourth currently underway following Or Galant’s visit in our lab this summer.

The NY State Fair

The MMD lab made its annual sojourn to the NY State Fair this weekend to host a booth in the 4-H Youth Building. We got to share our enthusiasm for polymers and mechanochemistry with the myriad of people spending their Labor Day at the fair. Joy used her materials science expertise to take our silly putty making procedure to a new level. Special thanks to our teen volunteer Diego who helped us keep up with demand during the late morning rush.

4-H Career Explorations

Graduate students Michael and Steven revised and ran our University U activity at the 4-H Career Explorations event last month. This year we added a design challenge – after testing individual materials, students tried to make an assembly that gave a J-shaped force-deflection curve under tension. We tested their designs on our Zwick Universal Testing machine (shown below).

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DOE Early Career Award

Prof Silberstein wins the Department of Energy Early Career Award. See here for the Cornell Chronicle article.

PhD Qualifying Exam Success!

Congratulations to first year graduate students Michael Buche, Steven Yang, and Joy Zhang for passing their Q exams in Theoretical and Applied Mechanics, Mechanical Engineering, and Materials Science respectively!

Yuval’s work on the Cover of the Journal of Polymer Science: Polymer Chemistry

Postdoc Yuval Vidavsky’s paper entitled Modulating Metallopolymer Mechanical Properties by Controlling Metal Ligand Crosslinking is featured as the cover article in the June issue of the Journal of Polymer Science: Polymer Chemistry. Yuval conceived, synthesized, and tested a series of polymers that can be reversibly crosslinked by addition and removal of copper cations, thereby tailoring the stiffness and strength.  Further, he showed that the crosslink strength and therefore the dynamic behavior of the material could be modulated in the solid state by exposure to different gasses. PhD candidate Suwon Bae made a key contribution to this work by conducting and analyzing the mechanical experiments. Credit to first year graduate student Steven Yang for making the cover art from Yuval’s specimens.

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