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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
Published on: March 29, 2018
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Tunable adhesion and slip on a bio-mimetic sticky soft surface
Saumyadwip Bandyopadhyay1, S M Sriram2, Vartika Parihar3
1Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, 721 302, West Bengal, India. suman@mech.iitkgp.ac.in.
Soft Matter
|October 23, 2019
Summary
Researchers developed a simple method to create tunable slippery surfaces by replicating rose petal structures on cross-linked PDMS and using silicone oil. This technique allows adjustable adhesion for applications like water harvesting and droplet transport.
Area of Science:
- Materials Science
- Surface Chemistry
Background:
- Tuning surface wettability and adhesion typically involves complex procedures.
- Developing surfaces with controllable adhesion while maintaining slipperiness is challenging.
Purpose of the Study:
- To present a simple method for creating stable slippery surfaces with tunable adhesion.
- To explore the use of rose petal structures for surface modification.
Main Methods:
- Replicating rose petal hierarchical structures onto cross-linked polydimethylsiloxane (PDMS).
- Oleophobing the replicated structures with silicone oil.
- Tuning adhesion by controlling the oil film's submergence depth.
Main Results:
- Rose petal structures effectively arrested dewetting of silicone oil on PDMS, even under flow.
- Surface adhesion could be tuned on demand by adjusting oil submergence.
- Slippery characteristics were maintained across various parameters.
- Gradient adhesion surfaces were successfully fabricated.
Conclusions:
- The presented method offers a straightforward approach to create surfaces with tunable wettability and adhesion.
- This technique has potential applications in water harvesting, droplet manipulation, and efficient material transport.
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