Reentrant Microtexture
Reentrant Microtexture - Related Videos
08:02
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
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Cited by 17 •
2020
This work presents microfabrication protocols for achieving cavities and pillars with reentrant and doubly reentrant profiles on SiO2/Si wafers using photolithography and dry etching. Resulting microtextured surfaces demonstrate remarkable liquid repellence, characterized by robust long-term entrapment of air under wetting liquids, despite the intrinsic wettability of silica.
10:46
Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology
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Cited by 4 •
2015
Radiation exposure is an underestimated risk in complex ablation procedures. Here, we describe a protocol to significantly decrease fluoroscopy time and dosage for both the patient and the lab staff by using a novel non-fluoroscopic catheter visualization system.
12:09
Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
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Cited by 14 •
2013
A methodology to estimate ventricular fiber orientations from in vivo images of patient heart geometries for personalized modeling is described. Validation of the methodology performed using normal and failing canine hearts demonstrate that that there are no significant differences between estimated and acquired fiber orientations at a clinically observable level.
FAQs
Their overhanging or inward-curving profiles can pin the liquid contact line, limiting its movement across the surface. These features may also trap air beneath or around a droplet and establish capillary barriers that oppose liquid entry. Together, contact-line pinning, trapped air, and geometric resistance help maintain water-repellent behavior and improve interfacial stability.
Overhangs can create mechanical interlocking when a contacting material conforms to or engages with the textured geometry. This changes how the interface transfers loads and separates, allowing adhesion to be controlled rather than determined only by surface chemistry. The same geometric engagement can also influence friction, making profile shape important when designing contact surfaces.
Feature shape and spacing are central design variables because they influence wetting, friction, and interfacial stability in different ways. The degree of overhang or inward curvature affects how contact lines and contacting materials interact, while spacing changes the arrangement of barriers and available contact regions. Engineers therefore connect microscale geometry with the targeted surface response.
A practical design approach starts by identifying the desired interaction, such as resisting liquid penetration, controlling adhesion, manipulating droplets, or limiting friction. Engineers then select feature profiles and spacing that support the relevant wetting, mechanical, or stability behavior. Evaluating those geometric choices against the intended outcome provides a basis for tailoring the surface architecture.
Applications include water-repellent and anti-icing surfaces, droplet-manipulation systems, adhesion-control interfaces, and protective coatings. In each case, the texture modifies how liquids or contacting materials interact with the surface. Its value lies in using geometry to support a selected performance goal, rather than relying on a single uniform surface behavior across all technologies.
Studying these textures connects microscale feature geometry with measurable interaction categories, including wetting, friction, and interfacial stability. That connection helps engineers determine whether a surface resists liquid entry, supports controlled droplet movement, changes adhesion, or alters contact behavior. The resulting analysis provides a framework for matching surface architecture to engineering requirements.