Now showing items 1-14 of 14

    • Controlled mode tuning in 1-D ‘RIM’ plasmonic crystal trench cavities probed with coupled optical emitters 

      Liu, Tsung-li; Russell, Kasey Joe; Cui, Shanying; Hu, Evelyn (Optical Society of America, 2013)
      We present a design of plasmonic cavities that consists of two sets of 1-D plasmonic crystal reflectors on a plasmonic trench waveguide. A 'reverse image mold' (RIM) technique was developed to pattern high-resolution ...
    • Direct Injection Tunnel Spectroscopy of a p-n Junction 

      Likovich, Edward Michael; Russell, Kasey Joe; Narayanamurti, Venkatesh; Lu, Hong; Gossard, Arthur C. (American Institute of Physics, 2009)
      We demonstrate spectroscopic measurements on an InGaAs p-n junction using direct tunnel injection of electrons. In contrast to the metal-base transistor design of conventional ballistic electron emission spectroscopy (BEES), ...
    • Dislocation Density-Dependent Quality Factors in InGaN Quantum Dot Containing Microdisks 

      El-Ella, H.A.R.; Rol, F; Kappers, M.J.; Russell, Kasey Joe; Hu, Evelyn; Oliver, R.A. (American Institute of Physics, 2011)
      Microdisks incorporating InGaN quantum dots were fabricated using SiO2 microspheres as a hard mask in conjunction with a photoelectrochemical etch step from a structure containing a sacrificial InGaN/InGaN superlattice. ...
    • Gap-mode Plasmonic Nanocavity 

      Russell, Kasey Joe; Hu, Evelyn (American Institute of Physics, 2010)
      Here we describe the fabrication and characterization of a plasmonic nanocavity formed in the narrow gap between a Ag nanowire and a flat Ag substrate. The fluorescence spectrum of nanocrystals within the gap was strongly ...
    • Growth of ZnO Nanowires Catalyzed by Size-Dependent Melting of Au Nanoparticles 

      Petersen, Eric W.; Likovich, Edward Michael; Russell, Kasey Joe; Narayanamurti, Venkatesh (Institute of Physics, 2009)
      We present a general approach to growing ZnO nanowires on arbitrary, high melting point (above 970 °C) substrates using the vapor–liquid–solid (VLS) growth mechanism. Our approach utilizes the melting point reduction of ...
    • High-Current-Density Monolayer CdSe/ZnS Quantum Dot Light-Emitting Devices with Oxide Electrodes 

      Likovich, Edward; Jaramillo, Rafael; Russell, Kasey Joe; Ramanathan, Shriram; Narayanamurti, Venkatesh (Wiley-Blackwell, 2011)
    • Large spontaneous emission enhancement in plasmonic nanocavities 

      Russell, Kasey Joe; Liu, Tsung-li; Cui, Shanying; Hu, Evelyn (Nature Publishing Group, 2012)
      Cavity–emitter coupling can enable a host of potential appli- cations in quantum optics, from low-threshold lasers to brighter single-photon sources for quantum cryptography1. Although some of the first demonstrations of ...
    • Low threshold, room-temperature microdisk lasers in the blue spectral range 

      Aharonovich, Igor; Woolf, Alexander J; Russell, Kasey Joe; Zhu, Tongtong; Niu, Nan; Kappers, Menno J.; Oliver, Rachel Caledonia Isabella; Hu, Evelyn (American Institute of Physics (AIP), 2013)
      InGaN-based active layers within microcavity resonators offer the potential of low threshold lasers in the blue spectral range. Here, we demonstrate optically pumped, room temperature lasing in high quality factor GaN ...
    • Magnetoresistance in an Asymmetric GaMnAs Resonant Tunneling Diode 

      Likovich, Edward Michael; Russell, Kasey Joe; Yi, Wei; Narayanamurti, Venkatesh; Ku, Keh-Chiang; Zhu, Meng; Samarth, Nitin (American Physical Society, 2009)
      In a GaMnAs/AlGaAs resonant tunneling diode (RTD) structure, we observe that both the magnitude and polarity of magnetoresistance are bias dependent when tunneling from a three-dimensional GaMnAs layer through a two-dimensional ...
    • Measuring the Mode Volume of Plasmonic Nanocavities Using Coupled Optical Emitters 

      Russell, Kasey Joe; Yeung, Yan Mui Kitty; Hu, Evelyn (American Physical Society, 2012)
      Metallic optical systems can confine light to deep subwavelength dimensions, but verifying the level of confinement at these length scales typically requires specialized techniques and equipment for probing the near field of ...
    • Narrow Band Defect Luminescence from AI-doped ZnO Probed by Scanning Tunneling Cathodoluminescence 

      Likovich, Edward M.; Jaramillo, Rafael; Russell, Kasey Joe; Ramanathan, Shriram; Narayanamurti, Venkatesh (American Institute of Physics, 2011)
      We present an investigation of optically active near-surface defects in sputtered Al-doped ZnO films using scanning tunneling microscope cathodoluminescence (STM-CL). STM-CL maps suggest that the optically active sites are ...
    • Scattering-Assisted Tunneling: Energy Dependence, Magnetic Field Dependence, and Use as an External Probe of Two-Dimensional Transport 

      Russell, Kasey Joe; Capasso, Federico; Narayanamurti, Venkatesh; Lu, H.; Zide, J. M. O.; Gossard, A. C. (American Physical Society, 2010)
      For more than three decades, research on tunneling through planar barriers has focused principally on processes that conserve momentum parallel to the barrier. Here we investigate transport in which scattering destroys ...
    • Transistors Formed from a Single Lithography Step Using Information Encoded in Topography 

      Dickey, Michael D.; Russell, Kasey Joe; Lipomi, Darren J.; Narayanamurti, Venkatesh; Whitesides, George McClelland (Wiley-Blackwell, 2010)
      This paper describes a strategy for the fabrication of functional electronic components (transistors, capacitors, resistors, conductors, and logic gates but not, at present, inductors) that combines a single layer of ...
    • Weak Localization and Mobility in ZnO Nanostructures 

      Likovich, Edward Michael; Russell, Kasey Joe; Petersen, Eric W.; Narayanamurti, Venkatesh (American Physical Society, 2009)
      We conduct a comprehensive investigation into the electronic and magnetotransport properties of ZnO nanoplates grown concurrently with ZnO nanowires by the vapor-liquid-solid method. We present magnetoresistance data showing ...