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Plant-Biomimetic Hydrogel Actuators: Creating Movement In Hydrogels Through The Study Of Plants, Christen Rhodes Aug 2014

Plant-Biomimetic Hydrogel Actuators: Creating Movement In Hydrogels Through The Study Of Plants, Christen Rhodes

Theses and Dissertations

Plants are sessile organisms that have developed methods of movement to respond to environmental stimuli. Some of the approaches feature the unequal expansion of cells and controlling deformation direction through fibers under swelling and drying. Hydrogels are three dimensional polymer networks that have the capacity for large volume changes due their affinity for water and can be tough and/or stimuli-responsive. In this paper, three preliminary plant-biomimetic hydrogel actuator designs are discussed and tested from wet to dry. The first actuator design, termed a 1%-0.1% bilayer, features two layers of different swelling and drying rates due to differences in cross-linking density. …


Held, Erika Diamond May 2014

Held, Erika Diamond

Theses and Dissertations

My work is a symptom of my ongoing quest to achieve immortality. I perpetually attempt to make permanent the traces we leave behind and the impressions we make upon each other. I use the body to portray boundaries – between the skin and the heart, comfort and disquiet, holding and letting go. The objects I make serve both as an agent for physical contact and as the commemoration of an ephemeral interaction. I create personal fossils, revealing the interstices formed when two bodies come into contact with one another. I use materials that reference endurance and longevity to record transient …