Snapshot Hyperspectral Imaging and Scanning Electrochemical Microscope for Nanoelectrode Reshaping Studies
Abstract
Spectro-electrochemistry is an effective tool for studying the dynamics of plasmonic nanoelectrodes such as gold nanostructures. The plasmonic properties of such nanoelectrodes can be exploited both as a reporter of the electrode condition as well as a promoter of desired electrochemical interactions such as catalysis. We have previously developed tools such as snapshot hyperspectral imaging to record the spectral changes for many plasmonic nanoelectrodes in parallel and in real time. However, our previous approaches are limited by a large electrode area and the inability to directly measure the electrochemical response of reactions occurring at single nanoelectrodes. This proposal requests funds to build an integrated scanning electrochemical and snapshot darkfield spectroscopy setup capable of simultaneous electrochemical imaging, manipulation, and high sensitivity spectroscopy of single plasmonic nanoelectrodes. This project will significantly enhance the previously funded ARO proposal ÒUnderstanding Plasmonic Electrode Reshaping.Ó It will be used to study electrode reshaping kinetics under electrical bias in corrosive electrolytes. The proposed instrument will allow us to develop and implement high precision shape and size tuning of nanoelectrode structures. This shape and size tuning will then be applied to large area nanoelectrode arrays with the aim to tune their collective plasmonic properties giving rise to reversible color switching. These endeavors will result in an increased understanding of the electrochemical processes that determine nanoelectrode reshaping dynamics and will allow for the rational design of durable nanoscale systems for catalysis and sensing.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 04, 2021
- Source ID
- W911NF2110024
Entities
People
- Christy F Landes
Organizations
- Army Contracting Command
- Rice University
- United States Army