Can I read Spontaneous Formation of Structures with Micro- and Nano-Scopic Periodic Ripple Patterns on EtoBox?

Spontaneous Formation of Structures with Micro- and Nano-Scopic Periodic Ripple Patterns by Vijayendra Shastri; Santanu Talukder; Kaustav Roy; Praveen Kumar; Rudra Pratap is a Engineering article available to read on EtoBox.

What is Spontaneous Formation of Structures with Micro- and Nano-Scopic Periodic Ripple Patterns about?

We report the first study on the formation of structures with micro- and nano-scopic periodic surface patterns created by the spontaneous flow of liquid metal over thin metallic solid films. Minute details of the flow of liquid gallium over gold are captured __in situ__ at very high magnifications using a scanning electron microscope, and a series of experiments and microstructural characterization are performed to understand the underlying principles of the liquid flow and the pattern formation. This phenomenon is solely driven by wetting, with little influence of gravity, and is aided by a tenacious semi-solidus envelope of the intermetallic compound formed due to the reaction between the liquid metal and the metallic substrate. This complex flow creates highly periodic patterns with features ranging from hundreds of nanometers to tens of micrometers, which can be tuned __a priori__. We propose a model capturing the essential mechanics of the ripple formation and apply it to simulate the formation of a single ripple, along with its essential asymmetry, that forms the basis for generating the observed patterns.

Who reads Spontaneous Formation of Structures with Micro- and Nano-Scopic Periodic Ripple Patterns?

Author

Vijayendra Shastri; Santanu Talukder; Kaustav Roy; Praveen Kumar; Rudra Pratap

Publisher

American Chemical Society

Published

2022

Language

EN

Field

Engineering (Physical Sciences)