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Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

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Published on: June 23, 2023

Bare-eye view at the nanoscale: new visual interferometric multi-indicator (VIMI).

Nikolaos T Panagiotopoulos¹, Panos Patsalas, Constantinos Prouskas

¹Department of Physics and Department of Materials Science and Engineering, University of Ioannina, GR-45110 Ioannina, Greece.

ACS Applied Materials & Interfaces

|November 6, 2010

Summary

This study introduces a visual interferometric multi-indicator (VIMI) device for detecting nanometer-scale thickness changes. It enables bare-eye color sensing of radiation and organic contamination without complex interfaces.

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Area of Science:

Optics and Photonics
Materials Science
Surface Science

Background:

Interferometric techniques are crucial for sensitive optical measurements.
Diamond-like carbon (DLC) films on silicon offer unique optical properties.
Remote sensing and contamination detection require high-resolution, non-invasive methods.

Purpose of the Study:

To develop an optical device for visual remote sensing of radiation and organic contamination.
To achieve bare-eye detection of nanometer-scale thickness variations.
To create a non-instrumental interface for optical inspection.

Main Methods:

Exploiting the antireflection properties of a DLC film on Si probe sample.
Utilizing a specific illumination spectrum to enhance interferometric effects.
Designing and constructing a visual interferometric multi-indicator (VIMI) device.

Main Results:

Demonstrated visual remote sensing of radiation (plasma, atomic oxygen).
Enabled visual inspection of adsorbed organic contamination down to molecular layers.
Achieved bare-eye color detection of thickness changes on the order of a few nanometers.

Conclusions:

The VIMI device provides a novel, interface-free method for optical sensing.
This technology allows for rapid, visual assessment of surface changes and contamination.
The VIMI system has potential applications in various fields requiring sensitive optical detection.