Design of quantum well infrared photodetector for sensing surface enhanced Raman scattering spectrum of Troponin I enzyme. lmj 2012; 8 (4) :32-38
URL:
http://icml.ir/article-1-236-en.html
Abstract: (17197 Views)
Background: This investigation has explored the detectivity of Surface Enhanced Raman Scattering (SERS) of Troponin I enzyme (cTnI) for diagnosing heart attack or myocardial anfractuous.
Material and Methods: In this article, we designed a photodetector to diagnose the cTnI by recording it's SERS spectrum. To achieve this goal, AlxGa1-xAs/GaAs quantum well photodetector was used. By optimizing the percentage of aluminum in barrier material and appointing a precise well width, the behavior of cTnI has been simulated through it's SERS spectrum.
Results: By simulating and optimizing of quantum well photodetector width, the complete optical absorption and detectivity for cTnI SERS spectrum has been obtained.
Conclusion: A quantum well in the near infrared photodetector is a suitable device for diagnosing diseases by transforming optical signals into electrical signals. The optimum and proper design of photodetector obtain improved detectivity and precise detectivity process.
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General Received: 2011/07/20 | Accepted: 2011/09/25