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.
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.
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.
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.
Congratulations to Meenakshi Manivannan for successfully defending his PhD this past Friday! Meenakshi will be the first MMD lab PhD graduate. His dissertation “Multiscale Modeling and Design of Mechanochemically Active Interfaces” covered his last four years of research using computational and analytical tools to discover the key physics governing mechanophore behavior in composites.
The MMD lab hosted a University U workshop as part of the annual 4-H Career Explorations program on Cornell’s campus. Six groups of rising 8th and 9th graders from around NY State rotated through our 80 minute session “Breaking Bonds and Changing Colors: A Mechanical Engineering Take on Chemistry”. Students acted out different types of bonds and conducted their own tensile tests. Although not depicted here, everyone in the lab rotated through running the sessions. Thanks to Alexa Maille and the rest of the 4-H team for a very helpful training workshop and making all the organizational aspects run seamlessly.
The MMD lab survived its first ever group Cayuga Lake trip. And we even found some other kayakers to take our picture!
Also, welcome to our summer undergraduates Maegan Cremar, Kenneth Fang, and Julia Owens.