The Willets lab is interested in understanding how heterogeneity at the nanoscale impacts materials properties and functions, with applications in spectroscopy, molecular sensing, and electrochemistry. Our primary focus is in the field of plasmonics, in which we study the interactions among ~10-100 nm noble metal nanostructures, organic molecules, and light. We use a variety of spectroscopy and microscopy techniques, including super-resolution imaging, single molecule fluorescence, surface-enhanced Raman scattering (SERS), and dark field scattering, and complement these studies with structural characterization methods such as atomic force microscopy and electron microscopy.
Super-resolution imaging and plasmonics
K.A. Willets, A.J. Wilson, V.Sundaresan, P.B. Joshi
Chemical Reviews. 117, 7538 (2017)
Modification of the electrochemical properties of Nile Blue through covalent attachment to gold as revealed by electrochemistry and SERS
A.J. Wilson, N.Y. Molina, K.A. Willets
J. Phys. Chem. C. 120, 21091 (2016).
Super-resolution imaging of fluorophore-labeled DNA bound to gold nanoparticles: a single molecule, single particle approach
K. L. Blythe and K.A. Willets
J. Phys. Chem. C. 120, 803 (2016).
A.J. Wilson and K.A. Willets
Invited review. Annu. Rev. Anal. Chem. 9, 27 (2016).
Imaging electrogenerated chemiluminescence at single gold nanowire electrodes
A.J. Wilson, K. Marchuk, K.A. Willets
Nano Lett. 15, 6100 (2015).
Characterizing the spatial dependence of redox chemistry on plasmonic nanoparticle electrodes using correlated super-resolution SERS imaging and electron microscopy
M.L. Weber, A.J. Wilson, K.A. Willets
J. Phys. Chem. C. 119, 18591 (2015).