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Related Experiment Video

Updated: Oct 11, 2025

Fabrication of Large-area Free-standing Ultrathin Polymer Films

Fabrication of Large-area Free-standing Ultrathin Polymer Films

Published on: June 3, 2015

Smectic free-standing films under fast lateral compression.

Christoph Klopp¹, Torsten Trittel¹, Kirsten Harth^2,3

¹Department of Nonlinear Phenomena, Institute of Physics, Otto von Guericke University, Universitätsplatz 2, D-39106 Magdeburg, Germany. ralf.stannarius@ovgu.de.

|November 29, 2021

Summary

This summary is machine-generated.

Freely-suspended smectic films wrinkle under compression, similar to solid sheets. Researchers measured the undulation wavelength dependence on thickness in these collapsing films.

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Last Updated: Oct 11, 2025

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Area of Science:

Materials Science
Soft Matter Physics
Fluid Dynamics

Background:

Freely-suspended smectic films exhibit mechanical properties analogous to solid sheets.
Previous studies demonstrated wrinkling in shape-fluctuating smectic bubbles.

Purpose of the Study:

To investigate wrinkle formation in planar smectic films under rapid lateral compression.
To measure the thickness dependence of undulation wavelengths in these films.
To observe instabilities at the border of the compressed film.

Main Methods:

Utilizing the collapse of smectic catenoid films to induce rapid lateral compression.
Observing and measuring wrinkle formation in the exposed central planar film.
Analyzing the undulation instability at the film's border.

Main Results:

Wrinkle formation was observed in the planar smectic film.
The undulation wavelength was measured and found to depend on film thickness.
An undulation instability was also observed at the border of the central film.

Conclusions:

Freely-suspended smectic films demonstrate wrinkling behavior under compression.
Film thickness is a critical parameter influencing the undulation wavelength.
The study reveals complex instability phenomena at the film's border.