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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

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Confinement-driven structural transitions in a dusty plasma crystal.

Sushree Monalisha Sahu^1,2, Ankit Dhaka^3,4, P Bandyopadhyay^3,4

¹Institute for Plasma Research, Bhat, Gandhinagar, Gujarat, 382428, India. monalisha.sahu@ipr.res.in.

Scientific Reports

|November 20, 2025

Summary

This summary is machine-generated.

Researchers controlled structural transitions in dusty plasma crystals by adjusting confinement potential. Varying the lower electrode

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Area of Science:

Complex plasma physics
Condensed matter physics

Background:

Dusty plasma crystals exhibit complex behaviors.
Controlling their structure is key to understanding plasma dynamics.

Purpose of the Study:

To investigate structural transitions in dusty plasma crystals.
To explore the effect of confinement potential variations.

Main Methods:

Experiments using the Capacitively Coupled Dusty Plasma Experimental (CCDPx) device.
Molecular Dynamics (MD) simulations.
Varying lower electrode channel width to alter confinement potential.

Main Results:

Structural transitions observed with changing channel width.
Decreasing inter-particle spacing, levitation height, and dust temperature with increasing channel width.
Increasing structural ellipticity and coupling parameter.

Conclusions:

Confinement potential variations controllably induce structural phase transitions.
Experimental results show good qualitative agreement with MD simulations.
Demonstrates a novel technique for studying complex plasma dynamics.