Browsing Center for Organic Photonics and Electronics (COPE) by Title
Now showing items 265-284 of 397
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Passive all-optical polarization switch, binary logic gates, and digital processor
(Georgia Institute of TechnologyOptical Society of America, 2011-10)We introduce the passive all-optical polarization switch, which modulates light with light. That switch is used to construct all the binary logic gates of two or more inputs. We discuss the design concepts and the operation ... -
Pattern-integrated interference lithography instrumentation
(Georgia Institute of TechnologyAmerican Institute of Physics, 2012-06)Multi-beam interference (MBI) provides the ability to form a wide range of sub-micron periodic optical-intensity distributions with applications to a variety of areas, including photonic crystals (PCs), nanoelectronics, ... -
Pattern-integrated interference lithography: single-exposure fabrication of photonic-crystal structures
(Georgia Institute of TechnologyOptical Society of America, 2012-06)Multibeam interference represents an approach for producing one-, two-, and three-dimensional periodic optical-intensity distributions with submicrometer features and periodicities. Accordingly, interference lithography ... -
Patterning via surface monolayer initiated polymerization: A study of surface initiator photoreaction kinetics
(Georgia Institute of TechnologyAmerican Vacuum Society, 2004-11)Surface monolayer initiated polymerization (SMIP) is a potential method for achieving high resolution patterning of surfaces and materials that could be used as an alternative to conventional lithographic methods based on ... -
A PDA-based wireless biosensor using industry standard components
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2004-10)This paper presents the conception, design, implementation, and validation of an original, fully functional biosensor based on surface plasmon tesonance (SPR) technology.We present the motivation for building this sensor ... -
Perovskite Solar Cells; Outshining Silicon
(2015-11-10)The cost of generating electricity from sun light using photovoltaic devices has continued to drop extensively over the last decade. Now in some locations in the world, PV generated electricity is cheaper than that from ... -
Phosphor microparticles of controlled three-dimensional shape from phytoplankton
(Georgia Institute of TechnologyElectrochemical Society, 2006) -
Photodegradation of selected pi-conjugated electro-optic chromophores
(Georgia Institute of TechnologyAmerican Institute of Physics, 2003-07)The photodegradation properties of six electro-optic chromophores in guest-host polymer formats were measured as a function of wavelength throughout the visible and up to 1.3 μm in the near infrared. The chromophore structure ... -
Photoelectron spectroscopy studies of plasma-fluorinated epitaxial graphene
(Georgia Institute of TechnologyAmerican Vacuum Society, 2012-05)Fluorination of graphene has emerged as an attractive approach toward manipulating its physical, chemical, and electronic properties. To this end, we have demonstrated the viability of sulfur hexafluoride plasmas to ... -
Photopolymer-based diffractive and MMI waveguide couplers
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2004-11) -
Photorefractive polymer composite operating at the optical communication wavelength of 1550 nm
(Georgia Institute of TechnologyAmerican Institute of Physics, 2004-11)A photorefractive polymer composite sensitized at 1550 nm through direct two-photon absorption has been developed. We show an external diffraction efficiency of 3% in four-wave-mixing experiments and perform holographic ... -
Planar lightwave integrated circuits with embedded actives for board and substrate level optical signal distribution
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2004-05)As the data rate of integrated circuits dramatically increases, interconnection speed at the backplane and board levels are beginning to limit system performance, which drives investigations into alternative interconnection ... -
Planar photonic crystal microspectrometers in silicon-nitride for the visible range
(Georgia Institute of TechnologyOptical Society of America, 2009-09)We demonstrate the feasibility of forming a compact integrated photonic spectrometer for operation in the visible wavelength range using the dispersive properties of a planar photonic crystal structure fabricated in silicon ... -
Planar photonic crystals infiltrated with nanoparticle/polymer composites
(Georgia Institute of TechnologyAmerican Institute of Physics, 2007-11)Infiltration of planar two-dimensional silicon photonic crystals with nanocomposites using a simple yet effective melt processing technique is presented. The nanocomposites that were developed by evenly dispersing ... -
Plastic deformation of pentagonal silver nanowires: Comparison between AFM nanoindentation and atomistic simulations
(Georgia Institute of TechnologyAmerican Physical Society, 2008-06)The plastic deformation of a pentagonal silver nanowire is studied by nanoindentation using an atomic force microscope (AFM). AFM images of the residual indent reveal the formation of a neck and surface atomic steps. To ... -
Polarization-dependent loss and birefringence in long-period fiber gratings
(Georgia Institute of TechnologyOptical Society of America, 2003-12)Widely used descriptions and relationships for birefringence and polarization-dependent loss (PDL), developed primarily for ultraviolet-induced long-period fiber gratings (LPFGs) written in optical fiber, can be invalid ... -
Polylithic integration of electrical and optical interconnect technologies for gigascale fiber-to-the-chip communication
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2005-08)Polylithic integration of electrical and optical interconnect technologies is presented as a solution for merging silicon CMOS and compound semiconductor optoelectronics. In contrast to monolithic and hybrid integration ... -
Precision measurements for propagation properties of high-definition polymer waveguides by imaging of scattered light
(Georgia Institute of TechnologySociety of Photo-optical Instrumentation Engineers (SPIE), 2008-02)We present a reliable, nondestructive, and real-time technique for characterization of propagation properties of planar optical waveguides based on accurately imaging the scattered light from the optical waveguide using a ... -
Preconditioned superprism-based photonic crystal demultiplexers: analysis and design
(Georgia Institute of TechnologyOptical Society of America, 2006-11)We present the analysis and design of a new type of photonic crystal (PC) demultiplexers (i.e., preconditioned demultiplexer), in which the simultaneous existence of the superprism effect and the negative effective index ... -
Probing the Relationship Between Molecular Packing and Optoelectronic Properties in Molecular Electronic Materials
(2015-04-03)The properties (electronic, optical, mechanical and thermal) of organic semiconductors are strongly dependent on the chemical structure, configuration, conformation and relative position of the component molecules or ...