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Abeera Sharma
University of Missouri–St. Louis
3Publications
3H-index
34Citations
Publications 3
Newest
#1Abeera Sharma (UMSL: University of Missouri–St. Louis)H-Index: 3
#2Jay K. Bhattarai (UMSL: University of Missouri–St. Louis)H-Index: 6
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
view all 6 authors...
Abstract Electrochemical impedance spectroscopy (EIS) is used to compare the apparent electron transfer rate constant ( k app ) for a series of alkanethiol and of carbohydrate-terminated alkanethiol self-assembled monolayers (SAMs) on both flat gold and on nanoporous gold (np-Au). Using the surface area for np-Au determined by oxide stripping, the values of k app for the alkanethiol modified np-Au are initially over two orders of magnitude smaller than the values found on flat Au. This result pr...
3 CitationsSource
#1Jay K. Bhattarai (UMSL: University of Missouri–St. Louis)H-Index: 6
#2Abeera Sharma (UMSL: University of Missouri–St. Louis)H-Index: 3
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
view all 5 authors...
Abstract Localized surface plasmon resonance (LSPR) spectroscopy is a label-free chemical and biological molecular sensing technique whose sensitivity depends upon development of nanostructured transducers. Herein, we report an electrodeposition method for fabricating nanostructured gold films (NGFs) that can be used as transducers in LSPR spectroscopy. The NGF was prepared by electrodepositing gold from potassium dicyanoaurate solution onto a flat gold surface using two sequential controlled po...
17 CitationsSource
#1Abeera Sharma (UMSL: University of Missouri–St. Louis)H-Index: 3
#2Jay K. Bhattarai (UMSL: University of Missouri–St. Louis)H-Index: 6
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
view all 5 authors...
An electrochemical method for annealing the pore sizes of nanoporous gold (NPG) is reported. The pore sizes of NPG can be increased by electrochemical cycling with the upper potential limit being just at the onset of gold oxide formation. This study has been performed in electrolyte solutions including potassium chloride, sodium nitrate and sodium perchlorate. Scanning electron microscopy images have been used for ligament and pore size analysis. We examine the modifications of NPG due to anneal...
14 CitationsSource
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