ArticleScientific reports2025
Terahertz time domain spectroscopy technique used for evaluation of thickness and optical cum dielectric properties of table and fertile eggshells.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The paper reports the use of THz time domain spectroscopy for the measurements of thickness, refractive index and dielectric constants of chicken egg shells. Twelve numbers of table and fertile egg samples were selected. The experiment was performed in the reflection geometry using a fiber-coupled terahertz source between 0 and 4.0 THz range. The reflected time domain signal from the inner eggshell-membrane boundary and the outer eggshell interface was used, to determine shell thickness. The results were verified with Field Emission Scanning Electron-Microscopy (FESEM). In the next step, the obtained Time/frequency domain spectra data were used to ascertain the R.I., absorption coefficients, and real and imaginary parts of the dielectric constants for the first time. It was noticed that the values of R.I. of normal eggs at 0.8 THz were higher than 2.5 as compared to fertile eggs. Similarly, the absorption coefficient values for nonfertile eggs lie between 2 and 14 cm
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