Near-Infrared Spectroscopy for Anticounterfeiting Innovative Fibers

<div class="floats-full-page floats-full-page-figure"><h2>Figure 2</h2><div class="floats-full-page-caption"><table>(a) Selected NIR spectra region between 7100 and 9100 cm<sup>−1</sup> for PCA analysis and (b) score plot from PCA analysis of PLA, Kevlar (KA), Spandex (SP), and Sorona (SO) fibers after <svg height="14.85" id="M11" style="vertical-align:-2.22495pt" version="1.1" viewbox="0 0 28.75 14.85" width="28.75" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.012)"><path d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" id="x31"></path></g><g transform="matrix(.017,-0,0,-.017,8.222,12.012)"><path d="M368 703l-264 -866h-60l265 866h59z" id="x2F"></path></g><g transform="matrix(.017,-0,0,-.017,15.225,12.012)"><path d="M775 650l-6 -28q-60 -6 -81.5 -16t-61.5 -54l-175 -191l125 -243q30 -58 48.5 -71t82.5 -19l-5 -28h-275l7 28l35 4q31 4 37 12t-6 34l-108 216q-140 -165 -177 -219q-16 -22 -10.5 -30.5t41.5 -13.5l22 -3l-7 -28h-244l8 28q52 4 75 15.5t67 52.5q48 46 206 231&#10;l-110 215q-26 51 -44 63t-72 17l6 28h250l-6 -28l-27 -4q-30 -5 -35 -10t3 -27q17 -43 95 -190q70 78 154 185q15 21 10 29.5t-33 12.5l-30 4l5 28h236z" id="x1D44B"></path></g>
</svg> transformation, SNV, and 2nd Savitzky-Golay derivative.</table></div><div class="floats-full-page-content"><table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="649407.fig.002a" src="https://static-01.hindawi.com/articles/isrn/volume-2013/649407/figures/649407.fig.002a.jpg" /></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b></td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="649407.fig.002b" src="https://static-01.hindawi.com/articles/isrn/volume-2013/649407/figures/649407.fig.002b.jpg" /></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b></td></tr></table></td></tr></table></div></div>

Figure 2 | Near-Infrared Spectroscopy for Anticounterfeiting Innovative Fibers

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Figure 2: Near-Infrared Spectroscopy for Anticounterfeiting Innovative Fibers

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Figure 2

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Near-Infrared Spectroscopy for Anticounterfeiting Innovative Fibers

Figure 2