Prasad P.N. – TechConnect Briefs

Giant Enhancement of the Chiro-Optic Response of Chiral Plasmonic Media using Structured Light

Reddy I.V.A.K., Sukhotskiy V., Baev A., Furlani E.P., Prasad P.N., Haus J.W., University at Buffalo (SUNY), US

We propose an approach to achieve a great enhancement and broad spectral tunability of the chiro-optic response of plasmonic metasurfaces by exploiting their interaction with light of complex polarization, endowed with both spin (SAM) and [...]

Magneto-plasmonic Nanoplatforms for Enhanced Bioimaging and Photothermal Cancer Therapy

Kopwitthaya A., Ohulchanskyy T.Y., Jeon M., Law W-C., Xie Q., Chada R.R., Xue X., Furlani E.P., Kim C., Prasad P.N., University at Buffalo (SUNY), US

Multifunctional nanoplatforms are finding increasing use in a host of emerging applications in the fields of biophotonics and nanomedicine where they are used to target, probe, image and treat tissue at the cellular and subcellular [...]

A Negative Index Metamaterial Waveguide for De-Multiplexing

Vidal X., Baev A., Furlani E.P., Prasad P.N., The Institute for Lasers, Photonics and Biophotonics, US

In this presentation, we propose a novel metamaterial-based waveguide coupler for use as a de-multiplexer at telecommunication wavelengths. Currently, there have been relatively few studies of guided modes in left-handed waveguides; these have indentified some [...]

Plasmon assisted two-photon direct laser writing of micro-structures composed of chiral Ag nanoparticles

Vidal X., Kim W-J, Baev A., S. Jee H., Tokar V., Swihart M.T., The Institute for Lasers, Photonics and Biophotonics, ES

We present an approach to produce micropatterns of metallic nanoparticles (NPs) that preserve key optical properties of the individual NPs. The technique uses a photothermal reaction induced by two-photon direct laser writing. The studied NP [...]

Laser Writing of Metallic Nanostructures in a Polymer Matrix with Applications to Metamaterials

Shukla S., Vidal X., Furlani E.P., Swihart M.T., Prasad P.N., Harvard University, US

We present a novel laser-based method for directly writing metallic nanostructures in a polymer matrix with sub-wavelength resolution [1]. The method involves two-photon lithography (TPL) in which a femtosecond-pulsed laser induces two-photon initiated in situ [...]

Optical Nanotrapping Using Illuminated Metallic Nanostructures: Analysis and Applications

Furlani E.P., Baev A., Prasad P.N., University at Buffalo, US

The interest in optical particle manipulation has grown steadily in recent years especially for applications in the biological sciences where the manipulated objects include cells, organelles, and larger molecules. While micron and sub-micron bioparticles can [...]