Surface Mechanical Properties of Bio-Inspired Architectures (Final Report)
- Lehigh Univ., Bethlehem, PA (United States)
The majority of the work in this field, including most of our own early work, has been focused on one-sided materials. More recently, we have focused on two-sided systems, mimicking attachment systems in organisms that use shape complementarity to endow interfaces with highly enhanced and selective adhesion and friction. We discovered the spontaneous appearance of meso-scale dislocations at interfaces between shape-complementary patterned surfaces and studied how their geometry and materials properties govern macroscopic adhesion and friction. Our second major thrust was to study the influence of surface properties, specifically the surface stress, in mechanical phenomenon involving soft materials. We showed that solid surface stress often plays a very significant and pervasive role and this requires a re-thinking of several canonical surface mechanical phenomena such as adhesive contact, wetting, fracture and surface-stress-driven shape change.
- Research Organization:
- Lehigh Univ., Bethlehem, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- DOE Contract Number:
- FG02-07ER46463; FOA-0001664
- OSTI ID:
- 1487062
- Report Number(s):
- Jagota-DOE-Final
- Country of Publication:
- United States
- Language:
- English
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