{"id":440169,"date":"2017-08-16T02:00:00","date_gmt":"2017-08-15T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=356214a2a3ef03a93bc0539c55121a1e"},"modified":"2017-08-16T02:00:00","modified_gmt":"2017-08-15T23:00:00","slug":"do-it-yourself-optical-spectrometer-for-physics-undergraduate-instruction-in-nanomaterialcharacterization","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=440169","title":{"rendered":"Do it yourself: optical spectrometer for physics undergraduate instruction in nanomaterial\r\ncharacterization"},"content":{"rendered":"<p>In this paper, we report on a homemade optical spectrometer using diffraction grating and image<br \/>\nprocessing techniques. This device was designed to produce spectral images that could then be<br \/>\nprocessed by measuring signal strength (pixel intensity) to obtain the light source, transmittance,<br \/>\nand absorbance spectra of the liquid sample. The homemade optical spectrometer consisted of: (i) a<br \/>\nwhite LED as a light source, (ii) a cuvette or sample holder, (iii) a slit, (iv) a diffraction<br \/>\ngrating, and (v) a CMOS camera (webcam). In this study, various concentrations of a carbon<br \/>\nnanoparticle (CNP) colloid were used in the particle size sample test. Additionally, a commercial<br \/>\noptical spectrometer and tunneling electron microscope (TEM) were used to characterize the optical<br \/>\nproperties and morphology of the CNPs, respectively. The data obtained using the homemade optical<br \/>\nspectrometer, commercial optical spectrometer, and TEM showed similar results and trends. Lastly,<br \/>\nthe calculation and measu&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this paper, we report on a homemade optical spectrometer using diffraction grating and image<br \/>\nprocessing techniques. This device was designed to produce spectral images that could then be<br \/>\nprocessed by measuring signal strength (pixel intensity) to &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-440169","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/440169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=440169"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/440169\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=440169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=440169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=440169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}