S
Stephen Michielsen
Researcher at North Carolina State University
Publications - 66
Citations - 1716
Stephen Michielsen is an academic researcher from North Carolina State University. The author has contributed to research in topics: Contact angle & Fiber. The author has an hindex of 23, co-authored 66 publications receiving 1536 citations. Previous affiliations of Stephen Michielsen include University of Chicago & DuPont.
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Journal ArticleDOI
Design of a superhydrophobic surface using woven structures.
Stephen Michielsen,Hoon J Lee +1 more
TL;DR: The Cassie-Baxter model is restated in its original form, which better describes the most general cases of surface roughness, and it is shown that the roll-off angle is highly dependent on droplet size.
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Porphyrin-based, light-activated antimicrobial materials
TL;DR: New light-activated antimicrobial materials with a potentially wide range of possible uses in civilian settings were synthesized by the grafting of protoporphyrin IX and zinc protoporalin IX to nylon fibers, which showed increased antimicrobial activity against S. aureus with increasing exposure time.
Journal ArticleDOI
Lotus effect: Superhydrophobicity
Hoon Joo Lee,Stephen Michielsen +1 more
TL;DR: The relationship among contact angles, surface tension, and surface roughness is reviewed in this paper, and various numerical formulae related to contact angles are used to predict the surface tension and wetting behavior of polymer surfaces.
Journal ArticleDOI
Preparation of a superhydrophobic rough surface
Hoon Joo Lee,Stephen Michielsen +1 more
TL;DR: The relationship between the contact angles, surface tension, and surface roughness is reviewed in this article, where the Wenzel and Cassie-Baxter models are used as a guide to predict the superhydrophobic roughness of polymers.
Journal ArticleDOI
Effects of porosity, fiber size, and layering sequence on sound absorption performance of needle-punched nonwovens
TL;DR: In this article, the relationship between the material parameters, i.e., the fiber fineness, porosity, areal density, layering sequence, and airflow resistivity with the normal- incidence sound absorption coefficient of nonwoven com- posites consisting of three layers have been studied.