Contact

  • Academic
    hujack@stanford.edu
    University - Student Department: Materials Science and Engineering Position: Graduate
    University - Student Department: Materials Science and Engineering Position: Graduate

Additional Info

  • Mail Code: 4034

All Publications

  • High-Q nanophotonics: sculpting wavefronts with slow light NANOPHOTONICS Barton, D., Hu, J., Dixon, J., Klopfer, E., Dagli, S., Lawrence, M., Dionne, J. 2021; 10 (1): 83–88

    View details for DOI 10.1515/nanoph-2020-0510

    View details for Web of Science ID 000597359300007

  • Fluorescence-Detected Circular Dichroism of a Chiral Molecular Monolayer with Dielectric Metasurfaces. Journal of the American Chemical Society Solomon, M. L., Abendroth, J. M., Poulikakos, L. V., Hu, J., Dionne, J. A. 2020

    Abstract

    Strong enhancement of molecular circular dichroism (CD) has the potential to enable efficient asymmetric photolysis, a method of chiral separation that has conventionally been impeded by insufficient yield and low enantiomeric excess. Here, we study experimentally how predicted enhancements in optical chirality density near resonant silicon nanodisks boost CD. We use fluorescence-detected circular dichroism (FDCD) spectroscopy to measure indirectly the differential absorption of circularly polarized light by a monolayer of optically active molecules functionalized to silicon nanodisk arrays. Importantly, the molecules and nanodisk antennas have spectrally coincident resonances, and our fluorescence technique allows us to deconvolute absorption in the nanodisks from the molecules. We find that enhanced FDCD signals depend on nanophotonic resonances, in good agreement with simulated differential absorption and optical chirality density, while no signal is detected from molecules adsorbed on featureless silicon surfaces. These results verify the potential of nanophotonic platforms to be used for asymmetric photolysis with lower energy requirements.

    View details for DOI 10.1021/jacs.0c07140

    View details for PubMedID 33048539

  • High Quality Factor Dielectric Metasurfaces for Ultraviolet Circular Dichroism Spectroscopy ACS PHOTONICS Hu, J., Lawrence, M., Dionne, J. A. 2020; 7 (1): 36–42

    View details for DOI 10.1021/acsphotonics.9b01352

    View details for Web of Science ID 000508475800004

  • Towards all-optical chiral resolution and few-molecule circular dichroism spectroscopy with dielectric metasurfaces Dionne, J., Solomon, M., Hu, J., Abendroth, J., Lawrence, M., Poulikakos, L. AMER CHEMICAL SOC. 2019

    View details for Web of Science ID 000525061503599

  • All-dielectric, mid-infrared metasurfaces for vibrational circular dichroism enhancement Abendroth, J., Hu, J., Poulikakos, L., Solomon, M., Lawrence, M., Dionne, J. AMER CHEMICAL SOC. 2019

    View details for Web of Science ID 000525055501500

  • Enantiospecific Optical Enhancement of Chiral Sensing and Separation with Dielectric Metasurfaces ACS PHOTONICS Solomon, M. L., Hu, J., Lawrence, M., Garcia-Etxarri, A., Dionne, J. A. 2019; 6 (1): 43–49

    View details for DOI 10.1021/acsphotonics.8b01365

    View details for Web of Science ID 000456350400007