[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-572027-105":53,"doc-detail-572027-en":127},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":120,"head_meta":122,"extra_data":124,"updated_unix":126},105,"en","raman-spectroscopy-cheat-sheet","Raman Spectroscopy Cheat Sheet","","Raman spectroscopy is presented as a physics-based optical analysis technique that measures inelastic photon scattering to determine molecular and crystal fingerprints. Key Raman advantages are contrasted with near-infrared spectroscopy, emphasizing polarizability changes and lower interference from water for aqueous and bioprocess settings. The cheat sheet summarizes upstream and downstream use cases, including glucose and metabolite monitoring, antibody analytics, model transfer to manufacturing, and applications like aggregation and glycosylation.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/raman-spectroscopy-cheat-sheet/572027/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/raman-spectroscopy-cheat-sheet/572027.png","ImageObject",442,249,{"name":88,"@type":89},"Rhys","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-25","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",6,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"What does Raman spectroscopy measure, and how does it differ from Rayleigh scattering?","Question",{"text":109,"@type":110},"Raman spectroscopy measures the small fraction of photons scattered inelastically. Rayleigh scattering accounts for the vast majority of elastic photon scattering, while Raman captures energy changes related to molecular vibrations.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"Why is Raman spectroscopy advantageous compared with near-infrared spectroscopy (NIRS) for aqueous samples?",{"text":114,"@type":110},"Raman spectroscopy measures changes in polarizability during molecular motions, while NIRS measures dipole-moment changes via absorption. The Raman spectrum of water is weaker than its NIR absorption, reducing interference from polar molecules like water.",{"name":116,"@type":107,"acceptedAnswer":117},"What upstream monitoring tasks can Raman spectroscopy support in bioprocesses?",{"text":118,"@type":110},"It can measure glucose, lactate, viable cell density, and product concentration, supporting adaptive or closed-loop control. It can also monitor monoclonal antibodies in real time and help distinguish glycosylated from non-glycosylated molecules.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},572027,1792109698,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":79,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":73},687207024643,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","RAMAN SPECTROSCOPY CHEAT SHEET  \nPHYSICS OF RAMAN AND RAMAN ADVANTAGES  \n- Optical spectroscopy is a subset of spectroscopy. It is employed as an analysis technique to measure the interactions of different wavelengths of light with matter to determine the physical and chemical properties of the sample with which the light has interacted, hence it provides a unique “fingerprint” for different atomic, molecular, and crystal structures in a sample. Variations in the atomic and molecular structures result in different spectroscopic fingerprints, and optical spectroscopy can be used to identify and quantify these structures.  \n- When incident light scatters from the material that it interacts with, the vast majority of the photon scattering happens elastically, which is called Rayleigh scattering. Raman spectroscopy measures the tiny proportion of the photons that are scattered inelastically. The vibrational state of a molecule can be excited to an energy level aboveground state by a photon that loses energy during the Stokes scattering event, or the photon that scatters can gain energy from the drop of vibrational state of the molecule which is called anti-Stokes scattering. These two scattering events are the core of Raman spectroscopy but typically Stokes scattering is used – Rayleigh and Anti-Stokes lines are filtered out.  \n- Raman spectroscopy is a complementary method to near-infrared spectroscopy (NIRS) as it measures a different spectrum of the molecule. NIRS measures the change in dipole moment during the molecular vibrations causing absorption, whereas Raman spectroscopy measures the change in polarizability during molecular motions. This makes Raman spectroscopy inherently advantageous to measure analytes/metabolites in aqueous solutions/environment as the inelastic scattering of polar molecules are less efficient than nonpolar ones and the Raman spectrum of water is weaker compared to NIR absorption of water. The weakness of the Raman spectrum of polar molecules results in less interference from polar molecules such as water in the band of concern and facilitates the bioprocess monitoring, cell culture media, and protein analysis.  \nUPSTREAM APPLICATIONS  \n- Raman spectroscopy has shown accurate measurements of glucose, lactate, viable cell density, and product concentration leading to adaptive or closed-loop control strategies,  \n[www.pro-analytics.net |](www.pro-analytics.net |) (973) 241-1314  \nsuch as maintaining glucose concentration at a fixed setpoint or to minimize lactate accumulation by adjusting glucose feed rate. It is also demonstrated that Raman spectroscopy can monitor monoclonal antibodies in real time and distinguish between glycosylated and non-glycosylated molecules. Raman spectroscopy is also shown to have good correlation with traditional offline and at-line metabolite analyzers. In one study, glucose measurements from Mab-expressing cell line culture by Raman spectrum demonstrated good correlation with reference data from Flex2 analyzer from Nova Biomedical. Raman spectrum based predictive models for glucose controlling the cell culture displayed equivalent glucose and viable cell count profiles compared with the reference data. Other studies show good correlation with HPLC, UV/Visible spectroscopy analyzers and various chemistry analyzers.  \n- The detailed chemical information that is obtained by Raman spectrum, thanks to its sharper bands, enables further ability of transferring models from small scale R&D settings to large scale manufacturing settings. Raman spectroscopy enables the ability to monitor product quality continuously in real time and the development of predictive and advanced feedback control strategies, and upstream process optimization. It displays scalability of prediction models and methods from minibioreactors to large scale production bioreactors. This results in higher process efficiency and production concentration, better and more consistent product quality, shorter cycle ","cbCaihU5yzA0udEn","https://ap.wps.com/l/cbCaihU5yzA0udEn","pdf",145982,"English","# Physics of Raman and Raman Advantages\n# Upstream Applications\n# Downstream Applications\n# High-Throughput Virtual Slit (HTVS) and Tornado","[{\"question\":\"What does Raman spectroscopy measure, and how does it differ from Rayleigh scattering?\",\"answer\":\"Raman spectroscopy measures the small fraction of photons scattered inelastically. Rayleigh scattering accounts for the vast majority of elastic photon scattering, while Raman captures energy changes related to molecular vibrations.\"},{\"question\":\"Why is Raman spectroscopy advantageous compared with near-infrared spectroscopy (NIRS) for aqueous samples?\",\"answer\":\"Raman spectroscopy measures changes in polarizability during molecular motions, while NIRS measures dipole-moment changes via absorption. The Raman spectrum of water is weaker than its NIR absorption, reducing interference from polar molecules like water.\"},{\"question\":\"What upstream monitoring tasks can Raman spectroscopy support in bioprocesses?\",\"answer\":\"It can measure glucose, lactate, viable cell density, and product concentration, supporting adaptive or closed-loop control. It can also monitor monoclonal antibodies in real time and help distinguish glycosylated from non-glycosylated molecules.\"}]","Raman Spectroscopy Cheat Sheet | PDF",1791925112]