{"id":6610,"date":"2020-03-16T23:59:33","date_gmt":"2020-03-16T23:59:33","guid":{"rendered":"https:\/\/www.semiconsoft.com\/wp2\/?page_id=6610"},"modified":"2022-12-07T20:33:38","modified_gmt":"2022-12-08T01:33:38","slug":"technology","status":"publish","type":"page","link":"https:\/\/www.semiconsoft.com\/wp2\/technology\/","title":{"rendered":"Technology"},"content":{"rendered":"<div  class=\"tatsu-9NUqU5guV tatsu-section  tatsu-bg-overlay   tatsu-clearfix\" data-title=\"\"  data-headerscheme=\"background--dark\"><div class='tatsu-section-pad clearfix' data-padding='{\"d\":\"10px 0px 40px 0px\"}' data-padding-top='10px'><div class=\"tatsu-row-wrap  tatsu-wrap tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols  tatsu-clearfix tatsu-m6T52d4uI1\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image-none tatsu-column-effect-none  tatsu-B5OxdlBBFE\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-3Y0zouDpt   \" ><style>.tatsu-3Y0zouDpt .tatsu-inline-text-inner{width: 100%;text-align: center;background-color: rgba(74,144,226,1);padding: 10px 0px 10px 0px;}.tatsu-3Y0zouDpt.tatsu-inline-text{margin: 50px 0px 30px 0px;}.tatsu-3Y0zouDpt.tatsu-inline-text .tatsu-inline-text-inner *{font-family : Arial, Helvetica, sans-serif;font-weight : 700;font-size : 33px;}@media only screen and (max-width: 767px) {.tatsu-3Y0zouDpt .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>OUR&nbsp; TECHNOLOGY<\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-B5OxdlBBFE.tatsu-column{width: 100%;}.tatsu-B5OxdlBBFE.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-B5OxdlBBFE > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-B5OxdlBBFE > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-B5OxdlBBFE > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-B5OxdlBBFE > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-B5OxdlBBFE.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-B5OxdlBBFE.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-B5OxdlBBFE.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><div class=\"tatsu-section-background-wrap\"><div class = \"tatsu-section-background tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-section-overlay\"><\/div><style>.tatsu-9NUqU5guV .tatsu-section-pad{padding: 10px 0px 40px 0px;}.tatsu-9NUqU5guV .tatsu-section-offset-wrap{transform: translateY(-0px);}.tatsu-9NUqU5guV > .tatsu-bottom-divider{z-index: 9999;}.tatsu-9NUqU5guV > .tatsu-top-divider{z-index: 9999;}.tatsu-9NUqU5guV .tatsu-section-overlay{mix-blend-mode: normal;}<\/style><\/div><div  class=\"tatsu-VmPBpiGuj9 tatsu-section    tatsu-clearfix\" data-title=\"\"  data-headerscheme=\"background--dark\"><div class='tatsu-section-pad clearfix' data-padding='{\"d\":\"0px 0px 0px 0px\"}' data-padding-top='0px'><div class=\"tatsu-row-wrap  tatsu-wrap tatsu-row-has-one-half tatsu-row-has-two-cols tatsu-medium-gutter tatsu-reg-cols  tatsu-clearfix tatsu-Mpq_a5MPPY\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-column-no-bg tatsu-one-half tatsu-column-align-middle tatsu-column-image-none tatsu-column-effect-none  tatsu-MCywgQK3xp\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module align-center be-shadow-light tatsu-external-image tatsu-cftYA1qWNw  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><a class = \"mfp-image\" href = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/spectralreflectance_stack.gif?fit=600%2C450&#038;ssl=1\" ><img class = \"tatsu-gradient-border\" src = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/spectralreflectance_stack.gif?fit=600%2C450&amp;ssl=1\" alt =\" \"  \/><\/a><\/div><style>.tatsu-cftYA1qWNw{margin: 0px 0px 0px 0px;}.tatsu-cftYA1qWNw .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-cftYA1qWNw.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-3RZPBTdsVy\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-YKZvIIVX7\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-vMx_FtGmc   \" ><style>.tatsu-vMx_FtGmc .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-vMx_FtGmc.tatsu-inline-text{margin: 0px 0px 10px 0px;}@media only screen and (max-width: 767px) {.tatsu-vMx_FtGmc .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Fig. 1 Filmstack diagram with reflectance and transmittance<\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-YKZvIIVX7.tatsu-column{width: 100%;}.tatsu-YKZvIIVX7.tatsu-column{margin: 0px 0px 10px 0px !important;}.tatsu-YKZvIIVX7.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-YKZvIIVX7 > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-YKZvIIVX7 > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-YKZvIIVX7 > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-YKZvIIVX7 > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-YKZvIIVX7.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-YKZvIIVX7.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-YKZvIIVX7.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-KkmS3xzny6\" ><style>.tatsu-KkmS3xzny6 > .tatsu-row{margin-top: 0px;}.tatsu-KkmS3xzny6.tatsu-row-wrap > .tatsu-row{margin-bottom: 10px;}<\/style><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-XcVBcnDtz\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module tatsu-image-lazyload tatsu-external-image tatsu-bj55ntT6E  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><a class = \"mfp-image\" href = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_refllectance-500x368-1.png?fit=500%2C368&#038;ssl=1\" ><img class = \"tatsu-gradient-border\" data-src = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_refllectance-500x368-1.png?fit=500%2C368&amp;ssl=1\" alt =\" \"  src =\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\"  \/><\/a><\/div><style>.tatsu-bj55ntT6E{margin: 0px 0px 10px 0px;}.tatsu-bj55ntT6E .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-bj55ntT6E.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-oAWkBn_UC   \" ><style>.tatsu-oAWkBn_UC .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-oAWkBn_UC.tatsu-inline-text{margin: 0px 0px 10px 0px;}@media only screen and (max-width: 767px) {.tatsu-oAWkBn_UC .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Fig. 2 Interference diagram<\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-XcVBcnDtz.tatsu-column{width: 100%;}.tatsu-XcVBcnDtz.tatsu-column{margin: 0px 0px 10px 0px !important;}.tatsu-XcVBcnDtz.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-XcVBcnDtz > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-XcVBcnDtz > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-XcVBcnDtz > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-XcVBcnDtz > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-XcVBcnDtz.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-XcVBcnDtz.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-XcVBcnDtz.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><\/div><style>.tatsu-row > .tatsu-MCywgQK3xp.tatsu-column{width: 36.3%;}.tatsu-MCywgQK3xp.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: none;}.tatsu-MCywgQK3xp > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-MCywgQK3xp > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-MCywgQK3xp > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-MCywgQK3xp > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-MCywgQK3xp.tatsu-column{width: 100%;}}<\/style><\/div><div  class=\"tatsu-column  tatsu-column-no-bg tatsu-one-half tatsu-column-align-middle tatsu-column-image-none tatsu-column-effect-none  tatsu-TxuUCmnGnl\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-3BVOUJ-N0   \" ><style>.tatsu-3BVOUJ-N0 .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-3BVOUJ-N0.tatsu-inline-text{margin: 0px 0px 10px 0px;}.tatsu-3BVOUJ-N0.tatsu-inline-text .tatsu-inline-text-inner *{font-family : Arial, Helvetica, sans-serif;font-weight : 400;text-transform : none;font-size : 17px;line-height : 22px;}@media only screen and (max-width: 767px) {.tatsu-3BVOUJ-N0 .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Our MProbe system measures light reflected and\/or transmitted from layer structure in a specified wavelength range. Light reflected from the different interfaces can be in or out of phase, resulting in constructive(adding intensities) or destructive (subtracting intensities) interference i.e. causing intensity oscillation that are characteristic of the thin film structure.<\/p>\n<p>Spectroscopic reflectance measurement, like other optical methods, is indirect: the measurement data need to be analyzed in order to determine the filmstack parameters (thickness, optical constants, surface roughness, etc.) There are two basic approaches that are being used to analyze the data:<\/p>\n<ul>\n<li><strong>Curve fitting<\/strong>. Software calculates theoretical reflectance of the stack and parameters are adjusted to achieve best fit to the measured data. The filmstack parameters are inferred from the best fit. This method is, typically, used for thin layers or in cases when information about optical constants and\/or surface roughness need to be determined.<\/li>\n<li><strong>Fourier transform <\/strong>based. This method is used to determine thickness of the thick layers (&gt; 2um)<\/li>\n<\/ul>\n<h4 style=\"font-size: 18px; background-color: #ffffff; font-family: Arial, Helvetica, sans-serif; font-weight: 400; letter-spacing: normal; line-height: 22px !important;\"><span class=\"body \" style=\"color: #000000;\">Interpretation of the reflection data is fairly intuitive and easy to understand, especially in the case of relatively thick films. Thickness information is, primarily, contained in the frequency of reflectance spectrum oscillations, while optical constants (more accurately \u2013 optical contrast i.e. difference between optical constants at the interface) information is contained&nbsp; in the amplitude of the oscillations.<\/span><\/h4>\n<h4 style=\"margin-bottom: 15px; font-size: 18px; background-color: #ffffff; font-family: Arial, Helvetica, sans-serif; font-weight: 400; letter-spacing: normal; line-height: 22px !important;\"><span class=\"body\" style=\"color: #000000;\">Fig.3&nbsp; shows a fit using only thickness \u2013 incorrect refractive index (optical contrast) shows in the mismatch of the amplitude of intensity oscillation. The period of the oscillations is having a good match, but in order to determine thickness more accurately, both reflective index and thickness need to be fit together.<\/span><\/h4>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><\/div><style>.tatsu-row > .tatsu-TxuUCmnGnl.tatsu-column{width: 63.7%;}.tatsu-TxuUCmnGnl.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: none;}.tatsu-TxuUCmnGnl > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-TxuUCmnGnl > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-TxuUCmnGnl > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-TxuUCmnGnl > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-TxuUCmnGnl.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><div class=\"tatsu-section-background-wrap\"><div class = \"tatsu-section-background tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><style>.tatsu-VmPBpiGuj9.tatsu-section{background-color: rgba(255,255,255,1);}.tatsu-VmPBpiGuj9 > .tatsu-bottom-divider{z-index: 9999;}.tatsu-VmPBpiGuj9 > .tatsu-top-divider{z-index: 9999;}<\/style><\/div><div  class=\"tatsu-S57c4xxTHX tatsu-section    tatsu-clearfix\" data-title=\"\"  data-headerscheme=\"background--dark\"><div class='tatsu-section-pad clearfix' data-padding='{\"d\":\"7px 0px 0px 0px\"}' data-padding-top='7px'><div class=\"tatsu-row-wrap  tatsu-wrap tatsu-row-has-one-half tatsu-row-has-two-cols tatsu-medium-gutter tatsu-reg-cols  tatsu-clearfix tatsu-NPc32-rOrx\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-column-no-bg tatsu-one-half tatsu-column-align-middle tatsu-column-image-none tatsu-column-effect-none  tatsu-qMpyL3Kr1l\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-jNSu9aQB-t   \" ><style>.tatsu-jNSu9aQB-t .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-jNSu9aQB-t.tatsu-inline-text .tatsu-inline-text-inner *{font-family : Arial, Helvetica, sans-serif;font-weight : 400;text-transform : none;font-size : 17px;line-height : 22px;}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<h4>&nbsp;<\/h4>\n<h4><span class=\"body\" style=\"color: #000000;\">Fig. 4 shows the results of the fit using both thickness and refractive index. Refractive index, in this case, is represented using Cauchy approximation that works well for polymer materials in the visible and NIR range. Other approximations, like Tauc-Lorentz, Drude, Exciton, effective -media, etc. are used depending on the type of the material.<\/span><\/h4>\n<p><span class=\"body  \"><span style=\"color: #000000;\">The&nbsp;<\/span>corollary is refractive index can be measured very accurately if refractive index of the substrate is known&nbsp;<\/span><\/p>\n<p><span class=\"body  \"><strong>Curve Fitting <\/strong>is a very powerful method of data analysis that allows to determine many physical properties of the layers but there are situation where it is not suitable. In many cases, films are not perfect, they have some artifacts like coloring, non-uniformity, residual absorption that are of no interest i.e. does not need to be determined. However, in order to use curve fitting all these artifacts need to be taken into account. This is especially true in cases of the thick films (films &gt;2um). As we discussed earlier, information about film thickness is contained in the period of intensity oscillation.<\/span><\/p>\n<p><span class=\"body  \"><strong>FFT<\/strong> based method is based on determining only film thickness using intensity oscillation frequency and ignoring all the other properties. Of course, optical constants still need to be supplied in order to get correct results.<\/span><\/p>\n<p><span class=\"body  \">FFT based method has several other advantages:&nbsp;<\/span><\/p>\n<ul>\n<li><span class=\"body  \">High measurement speed.<\/span><\/li>\n<li><span class=\"body  \">Low sensitivity to the distance change between the probe and the sample<\/span><\/li>\n<li><span class=\"body  \">Minimal need for calibration<\/span><\/li>\n<\/ul>\n<p><span class=\"body  \">These advantages makes it a preferred&nbsp; method for inline measurement in manufacturing environment.<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><\/div><style>.tatsu-row > .tatsu-qMpyL3Kr1l.tatsu-column{width: 49.6%;}.tatsu-qMpyL3Kr1l.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: none;}.tatsu-qMpyL3Kr1l > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-qMpyL3Kr1l > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-qMpyL3Kr1l > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-qMpyL3Kr1l > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-qMpyL3Kr1l.tatsu-column{width: 100%;}}<\/style><\/div><div  class=\"tatsu-column  tatsu-column-no-bg tatsu-one-half tatsu-column-align-middle tatsu-column-image-none tatsu-column-effect-none  tatsu-JsZ5l_kmXi\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module be-shadow-light tatsu-external-image tatsu-M67ij-gnRhR  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><a class = \"mfp-image\" href = \"https:\/\/i0.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_refllectance_t_fit.gif?fit=600%2C359&#038;ssl=1\" ><img class = \"tatsu-gradient-border\" src = \"https:\/\/i0.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_refllectance_t_fit.gif?fit=600%2C359&amp;ssl=1\" alt =\" \"  \/><\/a><\/div><style>.tatsu-M67ij-gnRhR{margin: 0px 0px 0px 0px;}.tatsu-M67ij-gnRhR .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-M67ij-gnRhR.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-zero-margin tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-u5r5fmHn5NC\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-align-bottom tatsu-column-image- tatsu-column-effect-  tatsu-fB9qA0phbjH\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-6TC6bWZrUTK   \" ><style>.tatsu-6TC6bWZrUTK .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-6TC6bWZrUTK.tatsu-inline-text{margin: 0px 0px 10px 0px;}@media only screen and (max-width: 767px) {.tatsu-6TC6bWZrUTK .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p><span class=\"swatch-black\">Fig.3 Curve fit to measured data using&nbsp; thickness only ( refractive index is not used in the fit)<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-fB9qA0phbjH.tatsu-column{width: 100%;}.tatsu-fB9qA0phbjH.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-fB9qA0phbjH > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-fB9qA0phbjH > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-fB9qA0phbjH > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-fB9qA0phbjH > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-fB9qA0phbjH.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-fB9qA0phbjH.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-fB9qA0phbjH.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-AXWD_vJIYl\" ><style>.tatsu-AXWD_vJIYl > .tatsu-row{margin-top: 0px;}.tatsu-AXWD_vJIYl.tatsu-row-wrap > .tatsu-row{margin-bottom: -40px;}<\/style><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-75sPmvheg\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module tatsu-image-lazyload tatsu-external-image tatsu-w7hB2FAQ4  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><img class = \"tatsu-gradient-border\" data-src = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_refllectance_t_n_fit.gif?fit=600%2C359&amp;ssl=1\" alt =\" \"  src =\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\"  \/><\/div><style>.tatsu-w7hB2FAQ4{margin: 0px 0px 10px 0px;}.tatsu-w7hB2FAQ4 .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-w7hB2FAQ4.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-75sPmvheg.tatsu-column{width: 100%;}.tatsu-75sPmvheg.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-75sPmvheg > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-75sPmvheg > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-75sPmvheg > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-75sPmvheg > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-75sPmvheg.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-75sPmvheg.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-75sPmvheg.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-zB4MuafWJI\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-qOiETC-G9\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-Ga3XdsXNT   \" ><style>.tatsu-Ga3XdsXNT .tatsu-inline-text-inner{width: 100%;text-align: left;}@media only screen and (max-width: 767px) {.tatsu-Ga3XdsXNT .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Fig. 4&nbsp;<span style=\"background-color: #ffffff; font-size: 17px; letter-spacing: 0px;\">Curve fit to measured data using thickness and R.I. (refractive index)<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-qOiETC-G9.tatsu-column{width: 100%;}.tatsu-qOiETC-G9.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-qOiETC-G9 > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-qOiETC-G9 > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-qOiETC-G9 > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-qOiETC-G9 > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-qOiETC-G9.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-qOiETC-G9.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-qOiETC-G9.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><\/div><style>.tatsu-row > .tatsu-JsZ5l_kmXi.tatsu-column{width: 50.4%;}.tatsu-JsZ5l_kmXi.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: none;}.tatsu-JsZ5l_kmXi > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-JsZ5l_kmXi > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-JsZ5l_kmXi > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-JsZ5l_kmXi > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-JsZ5l_kmXi.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><div class=\"tatsu-section-background-wrap\"><div class = \"tatsu-section-background tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><style>.tatsu-S57c4xxTHX.tatsu-section{background-color: rgba(255,255,255,1);}.tatsu-S57c4xxTHX .tatsu-section-pad{padding: 7px 0px 0px 0px;}.tatsu-S57c4xxTHX > .tatsu-bottom-divider{z-index: 9999;}.tatsu-S57c4xxTHX > .tatsu-top-divider{z-index: 9999;}<\/style><\/div><div  class=\"tatsu-OT8yBy3TLAI tatsu-section  tatsu-bg-overlay   tatsu-clearfix\" data-title=\"\"  data-headerscheme=\"background--dark\"><div class='tatsu-section-pad clearfix' data-padding='{\"d\":\"0px 0px 0px 0px\"}' data-padding-top='0px'><div class=\"tatsu-row-wrap  tatsu-wrap tatsu-row-has-one-half tatsu-row-has-two-cols tatsu-medium-gutter tatsu-reg-cols  tatsu-clearfix tatsu-rLNwi14rmt2\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-half tatsu-column-image-none tatsu-column-effect-none  tatsu-X4pnmQlBK3G\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-BflNxUyUv5\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-2_kBFnd9U\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module align-center tatsu-image-lazyload tatsu-external-image tatsu-asUFCSBS-  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><img class = \"tatsu-gradient-border\" data-src = \"https:\/\/i0.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_n.gif?fit=600%2C361&amp;ssl=1\" alt =\" \"  src =\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\"  \/><\/div><style>.tatsu-asUFCSBS-{margin: 0px 0px 10px 0px;}.tatsu-asUFCSBS- .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-asUFCSBS-.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-lCG3-7EC9   \" ><style>.tatsu-lCG3-7EC9 .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-lCG3-7EC9.tatsu-inline-text{margin: 0px 0px 10px 0px;}@media only screen and (max-width: 767px) {.tatsu-lCG3-7EC9 .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Fig. 5 Measured optical dispersion<\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-2_kBFnd9U.tatsu-column{width: 100%;}.tatsu-2_kBFnd9U.tatsu-column{margin: 0px 0px 10px 0px !important;}.tatsu-2_kBFnd9U.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-2_kBFnd9U > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-2_kBFnd9U > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-2_kBFnd9U > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-2_kBFnd9U > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-2_kBFnd9U.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-2_kBFnd9U.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-2_kBFnd9U.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu--eZESRneai\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-HQIIeCXwQ\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module tatsu-image-lazyload tatsu-external-image tatsu-G0rn20AcY  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><img class = \"tatsu-gradient-border\" data-src = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/ReflectancePolymer_2_L.gif?fit=600%2C368&amp;ssl=1\" alt =\" \"  src =\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\"  \/><\/div><style>.tatsu-G0rn20AcY{margin: 0px 0px 10px 0px;}.tatsu-G0rn20AcY .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-G0rn20AcY.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-aOl3JpyqR   \" ><style>.tatsu-aOl3JpyqR .tatsu-inline-text-inner{width: 100%;text-align: left;}@media only screen and (max-width: 767px) {.tatsu-aOl3JpyqR .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Fig. 6 Reflectance spectrum of the coated polymer film.<\/p>\n<\/div><\/div><div  class=\"tatsu-single-image tatsu-module tatsu-image-lazyload tatsu-external-image tatsu-sTnO9lerP  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><img class = \"tatsu-gradient-border\" data-src = \"https:\/\/i1.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer2_results.png?fit=600%2C359&amp;ssl=1\" alt =\" \"  src =\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\"  \/><\/div><style>.tatsu-sTnO9lerP{margin: 0px 0px 10px 0px;}.tatsu-sTnO9lerP .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-sTnO9lerP.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-2bfWlXKDH   \" ><style>.tatsu-2bfWlXKDH .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-2bfWlXKDH.tatsu-inline-text .tatsu-inline-text-inner *{font-family : Arial, Helvetica, sans-serif;font-weight : 400;text-transform : none;line-height : 22px;}@media only screen and (max-width: 767px) {.tatsu-2bfWlXKDH .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Results of the FFT analysis of reflectance spectra (Fig. 6) are shown above. Since we have a 2 layers, we see three peaks: total thickness (layer1 +layer 2) \u2013 this is strong peak since polymer\/air optical contrast is good, layer 1 peak and layer 2 peak. Layer 1 (substrate) peak is weak because of the scattering\/non-uniformity in the material but using total thickness and thickness of the top layer (layer 2) we can easily confirm its thickness.<\/p>\n<\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-HQIIeCXwQ.tatsu-column{width: 100%;}.tatsu-HQIIeCXwQ.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-HQIIeCXwQ > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-HQIIeCXwQ > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-HQIIeCXwQ > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-HQIIeCXwQ > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-HQIIeCXwQ.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-HQIIeCXwQ.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-HQIIeCXwQ.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-X4pnmQlBK3G.tatsu-column{width: 47.3%;}.tatsu-X4pnmQlBK3G.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-X4pnmQlBK3G > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-X4pnmQlBK3G > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-X4pnmQlBK3G > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-X4pnmQlBK3G > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-X4pnmQlBK3G.tatsu-column{width: 50%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-X4pnmQlBK3G.tatsu-column{width: 50%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-X4pnmQlBK3G.tatsu-column{width: 100%;}}<\/style><\/div><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-half tatsu-column-image-none tatsu-column-effect-none  tatsu-u2Cy29sTPo2\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-6BACeqGmW   \" ><style>.tatsu-6BACeqGmW .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-6BACeqGmW.tatsu-inline-text .tatsu-inline-text-inner *{font-family : Arial, Helvetica, sans-serif;font-weight : 400;text-transform : none;line-height : 22px;}@media only screen and (max-width: 767px) {.tatsu-6BACeqGmW .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>Reflectance spectra of the polymer film on a thick polymer substrate is shown on the Fig. 6. Two oscillation frequencies corresponding to 2 layers are clearly visible in the spectrum. We can also see that polymer substrate has some absorption in the visible range (high frequency disappears there) and the shape of the curve indicates that&nbsp; yellow\/red dye is present in the material.<\/p>\n<p>Results of the FFT analysis of reflectance spectra (Fig. 6) are presented on Fig.7 Since we have a 2 layers, we see three peaks: total thickness (layer1 +layer 2) \u2013 this is strong peak since polymer\/air optical contrast is good, layer 1 peak and layer 2 peak. Layer 1 (substrate) peak is weak because of the scattering\/non-uniformity in the material but using total thickness and thickness of the top layer (layer 2) we can easily confirm its thickness.<\/p>\n<p>It must be noted that intensity oscillation\/fringes are present only in reflectance spectra of relatively thick films (at least &gt;100nm thick). Reflectance spectra of very thin films has no any fringes but, using curve fitting, one can still determine the thickness.<\/p>\n<\/div><\/div><div class=\"tatsu-row-wrap  tatsu-row-one-col tatsu-row-has-one-cols tatsu-medium-gutter tatsu-reg-cols tatsu-inner-row-wrap  tatsu-clearfix tatsu-iDy85UUEgA\" ><div  class=\"tatsu-row \" ><div  class=\"tatsu-column  tatsu-bg-overlay tatsu-one-col tatsu-column-image- tatsu-column-effect-  tatsu-ArNDi0r5T\"  data-parallax-speed=\"0\" style=\"\"><div class=\"tatsu-column-inner \" ><div class=\"tatsu-column-pad-wrap\"><div class=\"tatsu-column-pad\" ><div  class=\"tatsu-single-image tatsu-module tatsu-image-lazyload tatsu-external-image tatsu-qi6sWGe-m  \" ><div class=\"tatsu-single-image-inner \" style=\"\" ><div class = \"tatsu-single-image-padding-wrap\" style = \"\" ><\/div><a class = \"mfp-image\" href = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_monolayer_fit.gif?fit=600%2C392&#038;ssl=1\" ><img class = \"tatsu-gradient-border\" data-src = \"https:\/\/i2.wp.com\/www.semiconsoft.com\/wp2\/wp-content\/uploads\/2020\/03\/Polymer_monolayer_fit.gif?fit=600%2C392&amp;ssl=1\" alt =\" \"  src =\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\"  \/><\/a><\/div><style>.tatsu-qi6sWGe-m{margin: 0px 0px 10px 0px;}.tatsu-qi6sWGe-m .tatsu-single-image-inner{border-style: solid;max-width: 100%;}.tatsu-qi6sWGe-m.tatsu-single-image{transform: translate3d(0px,0px, 0);}<\/style><\/div><div  class=\"tatsu-module tatsu-inline-text clearfix tatsu-ggtyePkAV   \" ><style>.tatsu-ggtyePkAV .tatsu-inline-text-inner{width: 100%;text-align: left;}.tatsu-ggtyePkAV.tatsu-inline-text .tatsu-inline-text-inner *{font-family : Arial, Helvetica, sans-serif;font-weight : 400;text-transform : none;line-height : 22px;}@media only screen and (max-width: 767px) {.tatsu-ggtyePkAV .tatsu-inline-text-inner{width: 100%;}}<\/style><div class=\"tatsu-inline-text-inner tatsu-align-center\">\n<p>One monolayer (1.3nm) polymer film thickness is determined using curve fitting of the model to measured data. Measurement sensitivity of better than 1nm using spectroscopic reflectance is readily demonstrated.<\/p>\n<p>Download a more detailed&nbsp; explanation of the thick film measurement below.&nbsp;<\/p>\n<\/div><\/div><div  class=\"tatsu-module tatsu-normal-button tatsu-button-wrap   tatsu-jVHinYWPq   \"><a class=\"tatsu-shortcode mediumbtn tatsu-button left-icon circular   bg-animation-none  \" href=\"https:\/\/www.semiconsoft.com\/html\/download\/docs\/ThickFilm_measurement_MProbeM.pdf\" style= \"\"  aria-label=\"MProbe Thick Film Measurement\" data-gdpr-atts={} target=\"_blank\">MProbe Thick Film Measurement<\/a><style>.tatsu-jVHinYWPq .tatsu-button{background-color: rgba(34,147,215,1);color: #ffffff ;}<\/style><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-ArNDi0r5T.tatsu-column{width: 100%;}.tatsu-ArNDi0r5T.tatsu-column{margin: 0px 0px 10px 0px !important;}.tatsu-ArNDi0r5T.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-ArNDi0r5T > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-ArNDi0r5T > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-ArNDi0r5T > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-ArNDi0r5T > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-ArNDi0r5T.tatsu-column{width: 100%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-ArNDi0r5T.tatsu-column{width: 100%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-ArNDi0r5T.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><\/div><div class = \"tatsu-column-bg-image-wrap\"><div class = \"tatsu-column-bg-image tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-column-overlay tatsu-animate-none\" ><\/div><\/div><style>.tatsu-row > .tatsu-u2Cy29sTPo2.tatsu-column{width: 52.7%;}.tatsu-u2Cy29sTPo2.tatsu-column > .tatsu-column-inner > .tatsu-column-overlay{mix-blend-mode: normal;}.tatsu-u2Cy29sTPo2 > .tatsu-column-inner > .tatsu-top-divider{z-index: 9999;}.tatsu-u2Cy29sTPo2 > .tatsu-column-inner > .tatsu-bottom-divider{z-index: 9999;}.tatsu-u2Cy29sTPo2 > .tatsu-column-inner > .tatsu-left-divider{z-index: 9999;}.tatsu-u2Cy29sTPo2 > .tatsu-column-inner > .tatsu-right-divider{z-index: 9999;}@media only screen and (max-width:1377px) {.tatsu-row > .tatsu-u2Cy29sTPo2.tatsu-column{width: 50%;}}@media only screen and (min-width:768px) and (max-width: 1024px) {.tatsu-row > .tatsu-u2Cy29sTPo2.tatsu-column{width: 50%;}}@media only screen and (max-width: 767px) {.tatsu-row > .tatsu-u2Cy29sTPo2.tatsu-column{width: 100%;}}<\/style><\/div><\/div><\/div><\/div><div class=\"tatsu-section-background-wrap\"><div class = \"tatsu-section-background tatsu-bg-lazyload\" data-src = \"\"><\/div><\/div><div class=\"tatsu-overlay tatsu-section-overlay\"><\/div><style>.tatsu-OT8yBy3TLAI .tatsu-section-offset-wrap{transform: translateY(-0px);}.tatsu-OT8yBy3TLAI > .tatsu-bottom-divider{z-index: 9999;}.tatsu-OT8yBy3TLAI > .tatsu-top-divider{z-index: 9999;}.tatsu-OT8yBy3TLAI .tatsu-section-overlay{mix-blend-mode: normal;}<\/style><\/div>\n","protected":false},"excerpt":{"rendered":"<p><a href=\"https:\/\/www.semiconsoft.com\/wp2\/technology\/\" class=\"exp-read-more exp-read-more-dots\">&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":6613,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6610","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Technology - Semiconsoft,Inc.<\/title>\n<meta name=\"description\" content=\"MProbe system measures light reflected from the layer structure in a specified wavelength range. 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