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When optical components are reduced to the nanoscale, they exhibit interesting properties that can be harnessed to create new devices. For example, imagine a block of material with thin layers of alternating materials. This creates a periodic arrangement of alternating dielectric constants, forming a "photonic crystal" that is analogous to the electronic crystals used in semiconductor devices. Photonic crystals, along with quantum dots and other devices patterned at the nanoscale, may form the basis for sensors and switches used in computers and telecommunications. More information on Nanophotonics can be found here.
Illinois NANO-EP Seminar: Photonic Crystal Nanolasers
15 Sep 2010 | | Contributor(s):: Kent D. Choquette
We discuss the application of nanotechnology to engineer optical properties of semiconductors for unprecedented confinement of both photons and electrons to develop the next generation of lasers and photonic integrated circuits. We will review our efforts to employ photonic crystals and...
Illinois iOptics Lecture 3: A tissue scattering-phase theorem
17 May 2010 | | Contributor(s):: Gabriel Popescu
We have derived two mathematical relationships between quantitative phase images of thin tissue slices and the scattering parameters of the bulk, i.e. scattering mean free path, ls, and anisotropy factor, g. The ls turns out to be inversely proportional to the mean-squared phase shift and g is...
Illinois iOptics Lecture 5: Deposited Nanorod Films for Biosensor Applications
17 May 2010 | | Contributor(s):: Brian Cunningham
Planar photonic crystals have been used as the basis of many biological sensing devices. Here, we successfully demonstrated that the combination of a photonic crystal structure and a dielectric nanorod coating prepared by the glancing angle deposition technique can lead to significant increases...
Illinois iOptics Lecture 2: Curavature induced time-domain impedance
17 May 2010 | | Contributor(s):: Jont B. Allen
Abstract for this talk is available as a PDF in supporting materials. Click here to view.
Developments in Metamaterials and Transformation Optics
29 Mar 2010 | | Contributor(s):: David R. Smith
Metamaterials—artificially structured microcircuits that can mimic the electromagnetic response of atoms and molecules—have vastly expanded the opportunities available for the design of electromagnetic structures. Starting in 2000 with the first report of a “left-handed” metamaterial, for which...
Photonic Crystals via Confinement of Anisotropic Colloids
02 Mar 2010 | | Contributor(s):: Mohammad Mayy, Chekesha Liddell
Controlling light-matter interactions with materials structured at micron and submicron length scales has been predicted as the basis for enhancements in the performance of a range of technologies, including photovoltaics, sensors and solid state lighting devices. However, the types of...
Modeling and Optimization of Polymer Based Bulk Heterojunction (BH) Solar Cell
15 Feb 2010 | | Contributor(s):: Biswajit ray
A polymer phase separation model based on Cahn-Hilliard equation and a three-dimensional (3D) coupled exciton/electron/hole transport model in the disordered, phase-segregated morphology so generated, allow us to predict, possibly for the first time, the morphology dependent performance limits...
McCoy Lecture: Transforming Light with Metamaterials: A New Paradigm for the Science of Light
15 Feb 2010 | | Contributor(s):: Vladimir M. Shalaev
One of the most unique properties of light is that it can package information into a signal of zero mass and propagate it at the ultimate speed. It is, however, a daunting challenge to bring photonic devices to the nanometer scale because of the fundamental diffraction limit. Metamaterials can...
BNC Annual Research Review: Transforming Light with Metamaterials
Transformation Optics at Optical Frequencies
03 Feb 2010 | | Contributor(s):: John Pendry
Metamaterials, i.e. artificial materials with rationally designedgeometry, composition, and arrangement of nanostructured building blocksare opening a gateway to unprecedented electromagnetic properties andfunctionalities that are unattainable with naturally occurringmaterials....
Metamaterials with low loss and gain
28 Jan 2010 | | Contributor(s):: Mikhail A. Noginov
Optical loss caused by absorption in metal and a need for active control are among the major challenges of plasmonic metamaterials. Both can be addressed by utilizing optical gain. Recent efforts aimed at the reduction of loss and the stimulated emission in nanoplasmonic systems with gain will...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 27: Optical Methods
21 Jan 2010 | | Contributor(s):: Nick Fang, Omar Sobh
Optical MathodsTopics: Photomask and Reticles Positive and Negative Lithography Relationship between Mask and Resist 8 Steps of Photolithography Photolithographic Process Positive Photoresists Negative Photoresists Chemistry of Photo-Crosslinking A simplified Model of Polymerization Photoresist...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 26: Nanomanufacturing 1: Semiconductor Manufacturing
20 Jan 2010 | | Contributor(s):: Nick Fang, Omar Sobh
Nanomaterials and Devices for Solar EnergyTopics: From Si crystals to Wafers From Wafers to Chips Photolithography: Definitions Optical Lithography Multi-Photon Lithography E-Beam Lithography Imprinting Lithography Scanning probe lithography Additive Processes Thermal Oxidation Diffusion Thermal...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 25: Nanomaterials and Devices for Solar Energy
29 Dec 2009 | | Contributor(s):: Nick Fang, Omar N Sobh
Nanomaterials and Devices for Solar EnergyTopics: Approaches: Breathing Membrane Continuous Operation Fuel Cell Water Management ElectroKinetic Nanobattery EDL Capacitators Laminar Flow Based Micro Fuel Cells The Energy in Sunlight Solar Energy Utilization Discovery of photovoltaic effect...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 22: Actuators for Nanoscale Displacement
17 Dec 2009 | | Contributor(s):: Nick Fang, Omar N Sobh
Actuators for Nanoscale DisplacementTopics: The Physics behind optical tweezers A Particle in a laser beam Application of Optical Tweezers Molecular Motors Microtubules Microtubule Properties Hybrid Nanomotors
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 20: Sensing and Actuation in Nanoscale
Sensing and Actuation in NanoscaleTopics: Scanning Tunneling Microscopy Two Modes of Forming STM Images STM Manipulation Atomic Force Microscopy Typical Engaging Curve Imaging in Fluid Shear Force Sensing by Tuning Fork Tip Shape Effects: Containment Tip Shape Effect: Cone Angle Other Imaging...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 19: In Touch With Atoms
08 Dec 2009 | | Contributor(s):: Nick Fang, Omar N Sobh
In touch with AtomsTopics: Imaging With Energy Beams Energy Beam - Material Interactions Imaging Modes Addition Imaging Features Examples of FIB Technology Three Modes of FIB Radiation Damage of FIB Impact of GA Doping The Scanning Probe System Scanning Tunneling Microscopy STM Components...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 17: Synthesis and Nanomaterials II
17 Nov 2009 | | Contributor(s):: Nick Fang, Omar N Sobh
Synthesis and Nanomaterials IITopics: Nanostructures by Self-Assembly Making The Connection Synthesis of Nanomaterials Industrial Practice: Sol Gel Process Sol Gel Process Flow Gaining Control of Size Dispersion Micrograph of Nanoparticles Homogeneous Nanoparticles Influence of Polymer...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 15: Self Assembly at all Scales
28 Oct 2009 | | Contributor(s):: Nick Fang
Interface and Self AssemblyTopics: From Surface Forces to Self-Assembly Self-propelled Droplets Driving Forces for Self-Assembly Phase Diagram of Micelles Micelle Properties Thermodynamic Balance of SAM Critical size of self assembled Micelles Distribution of Self Assembled Structures More...
Illinois 2009 nano-biophotonics Summer School, Lecture 11: Plasmonics, Metamaterials
Plasmonics, Meta-MaterialsTopics: New Frontiers of Photonics What Are Meta-Materials? Electromagnetic Meta-Materials Effective Medium Properties Plasmonic "Atoms" and "Crystals" Plasmonic Response Physics of Surface Plasmon Artificial Magnetism Split Ring Resonators The Swiss Roll Structure...