The Biomedical Optics Graduate Organization (B.O.G.O) is aimed at providing graduate students in the fields of Biomedical Optics with resources to help them attain success in their research and professional development. B.O.G.O will also provide an opportunity for undergraduate students to interact with graduate students, and will be a resource for them as prospective graduate students.

Upcoming Talks

  • Two-Photon-Induced Photoluminescence Imaging of Tumors Using Near-Infrared Excited Gold Nanoshells

    1. Presenter: Jaesook Park
      Date: Wednesday, June 25, 2008
      Time: 12.30pm to 1.30pm
      Location: ENS 637

    Abstract:

    Gold nanoshells (dielectric silica core/gold shell) are a novel class of hybrid metal nanoparticles whose unique optical properties have spawned new applications including more sensitive molecular assays and cancer therapy. We report a new photo-physical property of nanoshells (NS) whereby these particles glow brightly when excited by near-infrared light. We characterized the luminescence brightness of NS, comparing to that of gold nanorods (NR) and fluorescent beads (FB). We find that NS are as bright as NR and 140 times brighter than FB. To demonstrate the potential application of this bright two-photon-induced photoluminescence (TPIP) signal for biological imaging, we imaged the 3D distribution of gold nanoshells targeted to murine tumors.