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Related Experiment Video

Updated: Feb 14, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

Published on: January 26, 2016

Interferometric snapshot spectro-ellipsometry.

Vamara Dembele, Moonseob Jin, Inho Choi

|February 7, 2018

Summary

This summary is machine-generated.

We developed a fast snapshot spectroscopic ellipsometry technique for real-time thin-film thickness measurement. This novel method achieves high accuracy without moving parts, enabling rapid material analysis.

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Last Updated: Feb 14, 2026

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Published on: January 26, 2016

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Area of Science:

Materials Science
Optical Physics
Metrology

Background:

Accurate and rapid thin-film thickness measurement is crucial for various industrial applications.
Traditional spectroscopic ellipsometry methods can be time-consuming and require complex setups.

Purpose of the Study:

To introduce a novel snapshot spectroscopic ellipsometry system for real-time thin-film analysis.
To demonstrate the system's capability for high-speed and accurate thickness measurements.
To validate the system's performance against established commercial equipment.

Main Methods:

Development of an interferometric polarization-modulation module for snapshot measurements.
Implementation of spectroscopic ellipsometry for phase analysis of thin films.
Real-time data acquisition with a measurement speed of approximately 20 milliseconds.

Main Results:

The proposed system achieves a measurement speed of around 20 msec.
The technique requires no moving parts or time-dependent modulation devices.
Accuracy analysis shows comparable results to commercial spectroscopic ellipsometry equipment.

Conclusions:

The interferometric snapshot spectroscopic ellipsometry system offers a fast and accurate solution for real-time thin-film thickness monitoring.
The absence of moving parts simplifies the system design and enhances its robustness.
This technology has significant potential for in-line process control and material characterization.