Events

Quantifying Mechanical Stress Distribution within Slide-ring Gel
Speaker: 
Zi Wang, graduate student
Steve Craig, advisor
Thursday, May 10, 2018 - 11:00am to 12:00pm
Location: French Family Science Center 3232
Contact: 
Avery, Meg
919-660-1503

The architecture of gel network affects the local stress distribution within the strained network. However, quantitatively evaluating the influence of architecture difference on distributing mechanical stress is limited due to the lack of methodologies. Rapid advancement of polymer mechanochemistry has triggered broad applications of stress-responsive moieties (“mechanophores”) for stress sensing and mapping in bulk materials. Here, we choose slide-ring gel as a prototype and embed mechanochromophores to map its stress distribution (Scheme 1), expecting to construct a mathematic model to quantify the stress distribution within slide-ring gel, by tuning the intensity of mechanochromism at macroscopic level with the force-dependent dynamics of mechanochromophores at molecular level. Our long-term goal is to check the validity of the proposed mathematic model with various mechanochromophore-mapping platforms and conducting computational simulations.