@article{efecf1877ee5407786e51277c503ec51,
title = "Lattice-Resonance Metalenses for Fully Reconfigurable Imaging",
abstract = "This paper describes a reconfigurable metalens system that can image at visible wavelengths based on arrays of coupled plasmonic nanoparticles. These lenses manipulated the wavefront and focused light by exciting surface lattice resonances that were tuned by patterned polymer blocks on single-particle sites. Predictive design of the dielectric nanoblocks was performed using an evolutionary algorithm to create a range of three-dimensional focusing responses. For scalability, we demonstrated a simple technique for erasing and writing the polymer nanostructures on the metal nanoparticle arrays in a single step using solvent-assisted nanoscale embossing. This reconfigurable materials platform enables tunable focusing with diffraction-limited resolution and offers prospects for highly adaptive, compact imaging.",
keywords = "evolutionary algorithm, flat optics, multiplane imaging, reconfigurable metalenses, surface lattice resonance",
author = "Jingtian Hu and Danqing Wang and Debanjan Bhowmik and Tingting Liu and Shikai Deng and Knudson, {Michael P.} and Xianyu Ao and Odom, {Teri W.}",
note = "Funding Information: This work was supported by the Vannevar Bush Faculty Fellowship from DoD under grant no. N00014-17-1-3023 (J.H. and T.W.O.). This material is also based on research sponsored by the Air Force Research Laboratory under agreement number FA8650-15-2-5518. The U.S. Government is authorized to reproduce and distribute reprints for governmental purposes notwithstanding any copyright notation thereon. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of Air Force Research Laboratory or the U.S. Government. Research for this project was also conducted with support from National Science Foundation under DMR-1608258 (D.W.) and National Defense Science and Engineering Graduate (NDSEG) Fellowship (M.P.K.). Optical imaging development was supported by NIH grant 1R01GM115763. This work used Northwestern University Micro/Nano Fabrication Facility (NUFAB), which is partially supported by Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the Materials Research Science and Engineering Center (DMR-1720139), the State of Illinois, and Northwestern University. This work made use of the EPIC, Keck II, and SPID facility of Northwestern University{\textquoteright}s NUANCE Center, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the MRSEC program (NSF DMR-1720139) at the Materials Research Center, the International Institute for Nanotechnology (IIN), the Keck Foundation, and the State of Illinois, through the IIN. This research was supported in part through the computational resources and staff contributions provided for the Quest high-performance computing facility at North-western University which is jointly supported by the Office of the Provost, the Office for Research, and Northwestern University Information Technology. This work made use of the Pritzker Nanofabrication Facility of the Institute for Molecular Engineering at the University of Chicago, which receives support from Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), a node of the National Science Foundation{\textquoteright}s National Nanotechnology Coordinated Infrastructure. We thank Jack Olding, Ju Ying Shang, and Prof. Lincoln Lauhon for their help with confocal microscopy measurements.",
year = "2019",
month = apr,
day = "23",
doi = "10.1021/acsnano.9b00651",
language = "English",
volume = "13",
pages = "4613--4620",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "4",
}