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Plasmonic-based Label-free Detection and Imaging of Molecules


Abstract Obtaining local electrochemical (EC) information is extremely important for understanding basic surface reactions, and for many applications. Scanning electrochemical microscopy (SECM) can obtain local EC information by scanning a microelectrode across the surface. Although powerful, SECM is slow, the scanning microelectrode may perturb reaction and the measured signal decreases with the size of microelectrode. This thesis demonstrates a new imaging technique based on a principle that is completely different from the conventional EC detection technologies. The technique, referred to as plasmonic-based electrochemical imaging (PECI), images local EC current (both faradaic and non-faradaic) without using a scanning microelectrode. Because PEC... (more)
Created Date 2011
Contributor Shan, Xiaonan (Author) / Tao, Nongjian (Advisor) / Chae, Junseok (Committee member) / Christen, Jennifer Blain (Committee member) / Hayes, Mark (Committee member) / Arizona State University (Publisher)
Subject Electrical Engineering / Analytical Chemistry / Charge detection of single particle / Fabry-Perot microscope / graphene electrochemical imaging / Nanoparticle catalysis reaction / Plasmonic-based Electrochemical Imaging / Surface plasmon resonance
Type Doctoral Dissertation
Extent 215 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Ph.D. Electrical Engineering 2011
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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