Priyanuj Bordoloi

All Publications

• Tuning the Chiral Growth of Plasmonic Bipyramids via the Wavelength and Polarization of Light. Nano letters Qiao, T., Bordoloi, P., Miyashita, T., Dionne, J. A., Tang, M. L. 2024

  Abstract

  Circularly polarized light (CPL) is a versatile tool to prepare chiral nanostructures, but the mechanism for inducing enantioselectivity is not well understood. This work shows that the energy and polarization of visible photons can initiate photodeposition at different sites on plasmonic nanocrystals. Here, CPL on achiral gold bipyramids (AuBPs) creates hot holes that oxidatively deposit PbO2 asymmetrically. We show for the first time that the location of PbO2 photodeposition and hence optical dissymmetry depends on the CPL wavelength. Specifically, 488 and 532 nm CPL induce PbO2 growth in the middle of AuBPs, whereas 660 nm CPL induces PbO2 growth at the tips. Our observations show that wavelength-dependent plasmonic field distributions are more important than surface lightning rod effects in localizing plasmon-mediated photochemistry. The largest optical dissymmetry occurs at excitation wavelengths between the transverse and longitudinal resonances of the AuBPs because higher-order modes are required to induce chiral electric fields.

  View details for DOI 10.1021/acs.nanolett.3c04862

  View details for PubMedID 38357869

• Through thick and thin: how optical cavities control spin. Nanophotonics (Berlin, Germany) Dixon, J., Pan, F., Moradifar, P., Bordoloi, P., Dagli, S., Dionne, J. 2023; 12 (14): 2779-2788

  Abstract

  When light interacts with matter by means of scattering and absorption, we observe the resulting color. Light also probes the symmetry of matter and the result is encoded in its polarization. In the special case of circularly-polarized light, which is especially relevant in nonlinear optics, quantum photonics, and physical chemistry, a critical dimension of symmetry is along the longitudinal direction. We examine recent advances in controlling circularly-polarized light and reveal that the commonality in these advances is in judicious control of longitudinal symmetry. In particular, in the use of high quality-factor modes in dielectric metasurfaces, the finite thickness can be used to tune the modal profile. These symmetry considerations can be applied in multiplexed optical communication schemes, deterministic control of quantum emitters, and sensitive detection of the asymmetry of small molecules.

  View details for DOI 10.1515/nanoph-2023-0175

  View details for PubMedID 39635484

  View details for PubMedCentralID PMC11501721

• Through thick and thin: how optical cavities control spin NANOPHOTONICS Dixon, J., Pan, F., Moradifar, P., Bordoloi, P., Dagli, S., Dionne, J. 2023

  View details for DOI 10.1515/nanoph-2023-0175

  View details for Web of Science ID 000982262200001

• Light sheets for continuous-depth holography and three-dimensional volumetric displays NATURE PHOTONICS Dorrah, A. H., Bordoloi, P., de Angelis, V. S., de Sarro, J. O., Ambrosio, L. A., Zamboni-Rached, M., Capasso, F. 2023

  View details for DOI 10.1038/s41566-023-01188-y

  View details for Web of Science ID 000967013600003