Keywords

Surface Chemistry, Elasticity, Wetting Behavior, Metamaterial, Heat Transfer

Abstract

The study of wetting dynamics on ultrasoft materials has gained significant attention due to its critical implications for flexible technologies, thermal management systems, and advanced coatings. This research explores the effects of surface chemistry and elasticity on the maximum speed of wetting, with a focus on the unique viscoelastic properties of Ecoflex 00-30. Using high-speed imaging and controlled experiments, the links between surface energy, material stiffness, and thickness are analyzed to uncover key mechanisms controlling wetting behavior.

The results show that maximum wetting speed is primarily influenced by surface chemistry, while elasticity plays a less important role unless coupled with thin thickness variations. In addition, a nonlinear viscoelastic recoil phenomenon was observed during the initial wetting phase, where thinner samples exhibited decreased recoil velocity and increased spreading radius. These findings provide new insights into the dynamic interactions between liquids and ultrasoft substrates, expanding current understanding of wetting dynamics beyond rigid and moderately soft surfaces.

This work has practical applications in the design of flexible heat pipes, spray cooling systems, and coatings for de-icing and self-cleaning technologies. It also lays a foundation for future studies on optimizing material properties to enhance liquid transport and energy efficiency in emerging technologies.

Completion Date

2025

Semester

Spring

Committee Chair

Putnam, Shawn

Degree

Master of Science in Aerospace Engineering (M.S.A.E.)

College

College of Engineering and Computer Science

Identifier

DP0029322

Document Type

Dissertation/Thesis

Campus Location

Orlando (Main) Campus

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