Showing papers by "Philippe M. Fauchet published in 2013"
TL;DR: A point-defect-coupled W1 photonic crystal (PhC) waveguide biosensor is applied to label-free optical detection of viruses and the use of anti-VLP antibodies specific for intact VLPs with the PhC sensors provided highly selective VLP detection.
57 citations
TL;DR: This work has demonstrated successful integration of microfluidic channels with the 2D PhC device and characterized the temperature and bulk refractive index sensitivity of the device.
Abstract: Resonant optical microcavites of two-dimensional photonic crystals (2D PhC) are responsive to refractive index changes in the immediate vicinity and thus provide a label-free platform for sensing biological molecules. Because their active sensing volume is ~ 1 μm 3 , exceptionally sensitive detection of biomolecules is, in principle, achievable from complex biological samples. Previously, we have demonstrated detection of human-IgG protein and virus-like particles by measuring changes in the optical transmission spectrum from the 2D PhC after it has been treated with analyte and dried. However, this drying step restricts practical utility of the platform especially in the case of clinical diagnostics wherein multiple samples need to be tested in short duration. In our progress toward this, we have demonstrated successful integration of microfluidic channels with the 2D PhC device and we further characterized the temperature and bulk refractive index sensitivity of the device.
8 citations
TL;DR: Experimental results of pump-induced loss for TE and TM polarization in multislot SiO2/nc-Si waveguides demonstrate theoretically and experimentally that FCA may be reduced under TM polarization as much as 9 times compared to TE polarization.
Abstract: Free carrier absorption (FCA) in silicon is the major obstacle toward achieving optical gain in Si nanostructure systems. In this Letter, we present experimental results of pump-induced loss for TE and TM polarization in multislot SiO2/nc-Si waveguides. Continuous wavelength and ultrafast studies of carriers excited in the nc-Si multilayers reveal strong suppression of transmission loss related to FCA in Si nanostructures for TM-polarized probe light. We demonstrate theoretically and experimentally that FCA may be reduced under TM polarization as much as 9 times compared to TE polarization.
3 citations
Patent•
25 Jul 2013TL;DR: In this article, a Si-based light emitting diode structure and a method for fabricating the Si based light emitting dode structure are each predicated upon a multilayer material layer that comprises alternating, interposed and laminated sub-layers of: (1) a group IV nanocrystal material; and (2) an erbium or neodymium doped dielectric material.
Abstract: A Si-based light emitting diode structure and a method for fabricating the Si-based light emitting diode structure are each predicated upon a multilayer material layer that comprises alternating, interposed and laminated sub-layers of: (1) a group IV nanocrystal material; and (2) an erbium or neodymium doped dielectric material. The light emitting diode structure is preferably laterally actuated to provide both efficient photoluminescence and electroluminescence. The group IV nanocrystal material may comprise a silicon nanocrystal material and the doped dielectric material may comprise an erbium doped silicon oxide material.
2 citations