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Related Experiment Video

Updated: Jan 23, 2026

$Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics$

Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics

Published on: September 10, 2018

Terahertz refractive index matching solution.

Elena Mavrona, Felice Appugliese, Johan Andberger

|June 6, 2019

Summary

This summary is machine-generated.

We developed TeraSol, a barium titanate and benzocyclobutene solution, to match refractive indices for terahertz measurements. This material significantly reduces substrate reflections, improving data accuracy.

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Area of Science:

Materials Science
Optics and Photonics
Terahertz Spectroscopy

Background:

Substrate reflections impede accurate terahertz (THz) measurements.
Developing materials with tunable refractive indices is crucial for THz applications.

Purpose of the Study:

To fabricate and characterize a novel refractive index matching solution for THz applications.
To optimize the solution for matching common THz substrate refractive indices.

Main Methods:

Fabrication of a solution using barium titanate (BaTiO3) particles and benzocyclobutene (BCB).
Application of the effective medium approximation to determine particle concentrations for target refractive indices.
Characterization of the solution's performance in THz time domain spectroscopy at various temperatures.

Main Results:

A terahertz refractive index matching solution (TeraSol) was successfully developed.
The effective refractive index was tunable from n = 1.8 to n = 5 by adjusting BaTiO3 concentration.
Significant reduction in substrate reflections was observed during THz measurements.

Conclusions:

TeraSol effectively matches the refractive indices of common THz substrates.
The developed solution minimizes unwanted reflections, enhancing measurement precision.
TeraSol shows promise as an anti-reflective coating for THz spectroscopy.