{"id":311,"date":"2017-10-29T10:39:02","date_gmt":"2017-10-29T10:39:02","guid":{"rendered":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/?p=311"},"modified":"2017-11-08T00:33:07","modified_gmt":"2017-11-08T00:33:07","slug":"real-time-high-gain-computer-controlled-amplifier-for-optical-detection-systems","status":"publish","type":"post","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/10\/29\/real-time-high-gain-computer-controlled-amplifier-for-optical-detection-systems\/","title":{"rendered":"R.E. Garc\u00eda, J. Hern\u00e1ndez-Cordero, E. Geffroy, A.V. Porta “Real-time, high-gain, computer controlled amplifier for optical detection systems”\u00a0Review of scientific instruments, 73(1):203-208, 2002."},"content":{"rendered":"
R.E. Garc\u00eda, J. Hern\u00e1ndez-Cordero, E. Geffroy, A.V. Porta “Real-time, high-gain, computer controlled amplifier for optical detection systems<\/a>”\u00a0Review of scientific instruments<\/strong>, 73(1):203-208, 2002.<\/div>\n
<\/div>\n

Abstract<\/h3>\n

A computer controlled high-gain amplifier has been designed for sensitive detection of optical signals. Based on the use of digital-to-analog converters DACs, the gain and offset of a transimpedance amplifier are adjusted through a computer trying to match ideal amplifier parameters for optical detection with different experimental conditions. The amplifying modules have been developed for optical-rheometry techniques that provide information about the microstructural properties of fluids by measuring optical anisotropies induced by transient flows. Characterization of these programmable gain amplifiers shows that they provide gains and bandwidths more than adequate for experiments involving signals that evolve rapidly and with a large dynamic range. Hence, the use of DACs allows for the possibility of computer controlling both gain and offset in real time, with a significant reduction of the spurious contributions from the amplifying stages during data acquisition. In spite of being designed for optical rheometry, the amplifiers could be useful for any other laboratory arrangements requiring an amplifying stage with real-time gain and offset adjustment capabilities.<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

R.E. Garc\u00eda, J. Hern\u00e1ndez-Cordero, E. Geffroy, A.V. Porta “Real-time, high-gain, computer controlled…<\/p>\n

Continue reading “R.E. Garc\u00eda, J. Hern\u00e1ndez-Cordero, E. Geffroy, A.V. Porta “Real-time, high-gain, computer controlled amplifier for optical detection systems”\u00a0Review of scientific instruments, 73(1):203-208, 2002.”<\/span>…<\/a><\/div>\n
Continue reading \"R.E. Garc\u00eda, J. Hern\u00e1ndez-Cordero, E. Geffroy, A.V. Porta “Real-time, high-gain, computer controlled amplifier for optical detection systems”\u00a0Review of scientific instruments, 73(1):203-208, 2002.\"<\/span>…<\/a><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[45],"tags":[46],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peeeSR-51","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":688,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2018\/01\/25\/c-vieira-a-jana-m-konieczny-r-e-garcia-and-a-magana-integrating-computational-science-tools-into-a-thermodynamic-course-journal-of-science-education-and-technology-januar\/","url_meta":{"origin":311,"position":0},"title":"C. Vieira, A. Jana, M. Konieczny, R.E. Garc\u00eda, and A. Magana. \u201cIntegrating Computational Science Tools into a Thermodynamic Course.\u201d Journal of Science Education and Technology. January 2018.","date":"01\/25\/2018","format":false,"excerpt":"C. Vieira, A. Jana, M. Konieczny, R.E. Garc\u00eda, and A. Magana. \u201cIntegrating Computational Science Tools into a Thermodynamic Course.\u201d Journal of Science Education and Technology. January, 2018. https:\/\/doi.org\/10.1007\/s10956-017-9726-9 Abstract Computational tools and methods have permeated multiple science and engineering disciplines, because they enable scientists and engineers to process large amounts\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":837,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2019\/11\/15\/a-jana-s-i-woo-k-s-n-vikrant-and-r-e-garcia-electrochemomechanics-of-lithium-dendrite-growth-energy-environmental-science-2019\/","url_meta":{"origin":311,"position":1},"title":"A. Jana, S.-I. Woo, K.S.N. Vikrant, and R.E. Garc\u00eda \u00a0“Electrochemomechanics of lithium dendrite growth.”\u00a0Energy & Environmental Science, 12:3595-3607, 2019","date":"11\/15\/2019","format":false,"excerpt":"A. Jana, S.-I. Woo, K.S.N. Vikrant, and R.E. Garc\u00eda \u00a0\"Electrochemomechanics of lithium dendrite growth.\"\u00a0Energy Environ. Sci., 12:\u00a03595-3607, 2019.\u00a0https:\/\/doi.org\/10.1039\/C9EE01864F abstract A comprehensive roadmap describing the current density- and size-dependent dendrite growth mechanisms is presented. Based on a thermodynamically consistent theory, the combined effects of chemical diffusion, electrodeposition, and elastic and plastic\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":904,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2021\/11\/10\/j-huang-xl-phuah-lm-mcclintock-p-padmanabhan-ksn-vikrant-h-wang-d-zhang-h-wang-p-lu-x-gao-x-sun-x-xu-re-garcia-h-t-chen-x-zhang-h-wang-core-shell-metallic-alloy-nanopillars-in-dielec\/","url_meta":{"origin":311,"position":2},"title":"J Huang, XL Phuah, LM McClintock, P Padmanabhan, KSN Vikrant, H Wang, D Zhang, H Wang, P Lu, X Gao, X Sun, X Xu, RE Garc\u00eda, H-T Chen, X Zhang, H Wang “Core-shell metallic alloy nanopillars-in- dielectric hybrid metamaterials with magneto-plasmonic coupling.” Materials Today 51: 39-47, 2021.","date":"11\/10\/2021","format":false,"excerpt":"J Huang, XL Phuah, LM McClintock, P Padmanabhan, KSN Vikrant, H Wang, D Zhang, H Wang, P Lu, X Gao, X Sun, X Xu, RE Garc\u00eda, H-T Chen, X Zhang, H Wang \"Core-shell metallic alloy nanopillars-in- dielectric hybrid metamaterials with magneto-plasmonic coupling.\" Materials Today. 51: 39-47, 2021.\u00a0https:\/\/doi.org\/10.1016\/j.mattod.2021.10.024 Abstract Combining plasmonic\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":879,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2021\/01\/21\/k-s-n-vikrant-x-l-phuah-j-lund-han-wang-c-s-hellberg-n-bernstein-w-rheinheimer-c-m-bishop-h-wang-and-r-e-garcia-modeling-of-flash-sintering-of-ionic-ceramics-mrs-bulletin-janua\/","url_meta":{"origin":311,"position":3},"title":"K.S.N. Vikrant, X.L. Phuah, J. Lund, Han Wang, C.S. Hellberg, N. Bernstein, W. Rheinheimer, C.M. Bishop, H. Wang, and R.E. Garc\u00eda “Modeling of flash sintering of ionic ceramics.” MRS Bulletin, 46(1):67-75, 2021.","date":"01\/21\/2021","format":false,"excerpt":"K.S.N. Vikrant, X.L. Phuah, J. Lund, Han Wang, C.S. Hellberg, N. Bernstein, W. Rheinheimer, C.M. Bishop, H. Wang, and R.E. Garc\u00eda \"Modeling of flash sintering of ionic ceramics.\" MRS Bulletin, 46(1):67-75, 2021.\u00a0doi:10.1557\/s43577-020-00012-0 abstract A fundamental understanding of the influence of defects in ionic ceramics at the atomic, microstructural, and macroscopic\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":817,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2019\/10\/19\/j-li-j-cho-j-ding-h-charalambous-s-xue-h-wang-x-l-phuah-j-jian-x-wang-c-ophus-t-tsakalakos-r-e-garcia-a-k-mukherjee-n-bernstein-c-s-hellberg-h-wang-x-zhang-nanoscale\/","url_meta":{"origin":311,"position":4},"title":"J. Li, J. Cho, J. Ding, H. Charalambous, S. Xue, H. Wang, X.L. Phuah, J. Jian, X. Wang, C. Ophus, T. Tsakalakos, R.E. Garc\u00eda, A.K. Mukherjee, N. Bernstein, C.S. Hellberg, H. Wang, X. Zhang “Nanoscale stacking fault\u2013assisted room temperature plasticity in flash-sintered TiO2.” Science Advances. 5 (9): eaaw5519, 2019.","date":"10\/19\/2019","format":false,"excerpt":"J. Li, J. Cho, J. Ding, H. Charalambous, S. Xue, H. Wang, X.L. Phuah, J. Jian, X. Wang, C. Ophus, T. Tsakalakos, R.E. Garc\u00eda, A.K. Mukherjee, N. Bernstein, C.S. Hellberg, H. Wang, X. Zhang \"Nanoscale stacking fault\u2013assisted room temperature plasticity in flash-sintered TiO2.\" Science Advances. 5 (9):eaaw5519, 2019;\u00a0https:\/\/advances.sciencemag.org\/content\/5\/9\/eaaw5519?intcmp=trendmd-adv abstract Ceramic\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":921,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2022\/06\/08\/l-d-robinson-k-s-n-vikrant-j-e-blendell-c-a-handwerker-r-e-garcia-interfacial-and-volumetric-melting-regimes-of-sn-nanoparticles-acta-materialia-in-press-2022\/","url_meta":{"origin":311,"position":5},"title":"L.D. Robinson, K.S.N. Vikrant, J.E. Blendell, C.A. Handwerker, R.E. Garc\u00eda “Interfacial and Volumetric Melting Regimes of Sn Nanoparticles.” Acta Materialia. In Press. 2022","date":"06\/08\/2022","format":false,"excerpt":"L.D. Robinson, K.S.N. Vikrant, J.E. Blendell, C.A. Handwerker, and R.E. Garc\u00eda \"Interfacial and Volumetric Melting Regimes of Sn Nanoparticles.\" Acta Materialia. In Press. 2022.\u00a0https:\/\/doi.org\/10.1016\/j.actamat.2022.118084 Abstract A thermodynamically consistent phase field formulation was developed to describe what has been historically known as the premelted surface layer in Sn nanoparticles. Two interfacial\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2022\/06\/1-s2.0-S1359645422004657-ga1_lrg-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/311"}],"collection":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/comments?post=311"}],"version-history":[{"count":2,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/311\/revisions"}],"predecessor-version":[{"id":581,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/311\/revisions\/581"}],"wp:attachment":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media?parent=311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/categories?post=311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/tags?post=311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}