ATHENS, Ohio, Sept. 15, 2006 -- Two quantum dots connected by wires could help scientists better control the Kondo effect in experiments and could lead to a better understanding of structures such as superconductors, according to a new study. The Kondo effect occurs when electrons become trapped around the magnetic impurities in semiconductor materials, which prompts the electrons to change their spin. This phenomenon has intrigued scientists, as electronic correlations can create interesting and complex behavior in materials.Nanoscale metallic electrodes (in yellow) can be used to confine electrons in small regions,...Read full articleRelated content from Photonics MediaARTICLESNanochip Outlines Path for Quantum AdvantageCollaborating researchers from the University of Copenhagen’s Niels Bohr Institute and the University of Bochum (Germany) have developed a chip with scale-up potential that they say will serve...Photonics.com 12/9/2020Majorana: The So-Called Angel Particle Was Not DiscoveredA research team at Penn State, partnering with the University of Würzburg in Germany, has flagged a 2017 discovery of Majorana fermion as a false alarm. An exotic quantum state known as...Photonics.com 1/16/2020Shaping Light-Activated NanocatalystsA comparative study from Rice University researchers in the college’s Laboratory for Nanophotonics (LANP) demonstrated how the shape of nanoparticles affects their ability to drive...Photonics.com 9/25/2020Researchers Build Chip-Size Particle AcceleratorFor the first time, scientists at Stanford University and the SLAC National Accelerator Laboratory have created a silicon chip that can accelerate electrons using an infrared laser to deliver, at...Photonics Spectra March 2020 IssuePRODUCTSHall Measurement ControllerIdeal for researchers studying semiconductor materials, the MeasureReady M91 FastHall measurement controller from Lake Shore Cryotronics Inc. delivers significantly higher levels of accuracy, speed,...Photonics.com 7/23/2019SWIR CameraThe NIRvana HS from Teledyne Princeton Instruments is a SWIR camera that uses the advantages of the second NIR window (NIR-II) window to meet the needs of the scientific, industrial, and medical...BioPhotonics May/Jun 2020 IssueRadiation-Resistant Zoom LensesThe 192, 200, and 290 models of radiation-resistant zoom lenses from Resolve Optics Ltd. are nonbrowning devices with minimum geometric distortion from 400 to 750 nm, withstanding a total radiation...Photonics.com 8/17/2020Planetarium ProjectorThe ZEISS ASTERION planetarium projector from Carl Zeiss Jena GmbH is an optomechanical component designed for use with digital dome projection systems in hybrid planetariums. The...Photonics.com 8/4/2020PHOTONICS HANDBOOK ARTICLESAdaptive Optics: Taming Atmospheric Turbulence: For more than three centuries, the Earth’s atmosphere has frustrated astronomers. The layer of gases that we breathe also distorts the images formed by telescopes. This means that conventional telescopes of more than a few centimeters in diameter cannot reach the resolution limit set by their optics.To Isaac Newton the problem was clear, and in 1704 he realized the effects of atmospheric turbulence on image formation. Just as heat waves shimmering above a hot patch of ground can distort our...Photonics HandbookPositioning System Performance: Understanding the Rules: To make the right decisions and to ensure satisfactory performance in a positioning system, it is necessary to first have a grasp of performance parameters and an understanding of their definitions.Abbe Error — Linear off-axis errors introduced by angular deviations coupled to a moment arm at the point of interest on stage mounted devices (θ in Figure 1). The effect of Abbe error...Photonics HandbookDetectors: CCDs for Life-Science Applications: The CCD camera is becoming the imaging method of choice in biological laboratories for its resolution, versatility and ease of use. Choosing the best CCD for a given application, however, requires knowing how basic chip parameters affect performance.Since their invention in the late 1960s, charge-coupled devices, also called CCDs, have found widespread use in imaging applications. Electronic cameras based on CCD technology are used in...Photonics HandbookCommon Infrared Optical Materials and Coatings: A Guide to Properties, Performance, and Applications: The purpose of this guide is to identify the most common infrared-transmitting materials, pointing out key properties and their typical manufacturing and optical coating options. The information provided within this article is for reference purposes only.The optical materials selected for an optical system depend upon the application, the required system performance and the environment in which the system is to perform; thus the materials’...Photonics HandbookWHITEPAPERSIs It True That Cooled Cameras are More Sensitive than Non-cooled Cameras?The temperature has a significant impact on certain noise sources prevalent in cameras, which contribute to the total readout noise of an image sensor. When electronic devices are operated...Photonics.com 3/19/2019Custom vs. Off-the-Shelf Solutions: Are you dreaming big enough?Custom positioning solutions provide more leeway for innovation, and at far less cost, than many customers realize. Irrespective of whether the goal is a one-off solution or multiple units for a...Photonics.com 2/25/2020Extreme Metrology: Big Science Requires a Nano-perspectiveExtreme metrology represents the cutting edge in technological demand from the material researchers, astronomers, and other physicists whose work demands nearly unattainable precision. Understanding...Photonics.com 8/19/2020High Performance SWIR Imaging CamerasSilicon based area detectors (e.g. CCDs or CMOS) are widely used in high-performance imaging applications, detecting wavelengths from soft x-ray through to near infrared (NIR). Typically, the quantum...Photonics.com 7/21/2020WEBINARSLaser-Based Machine Vision: Lidar and 3-D ScanningLaser scanning technology has been around for several decades but with little innovative technology advancement. A new scanning technology platform based on a state-of-the-art MEMS projection engine,...Photonics.com 2/25/2015Surface-Enhanced Raman Spectroscopy: Methods and ApplicationsMOVED FROM AUGUST 22 TO SEPTEMBER 19 Join us for a FREE webinar: Friday, September 19, 2014, 1 p.m. EDT Surface-Enhanced Raman Spectroscopy: Methods and Applications This webinar will...Photonics.com 9/19/2014Quanta Image SensorsDemand for high sensitivity and high dynamic range motivates new approaches for image sensors. The quanta image sensor (QIS) concept involves counting individual photons on sensors made of 1...Photonics.com 1/28/2015Protective Coatings Extend Optics LifetimesPlease download the above “associated file” for a pdf copy of this webinar. From military airborne applications to harsh industrial uses, optics can be subjected to considerable...Photonics.com 10/10/2018PHOTONICS DICTIONARY TERMSBCS theoryBardeen-Cooper-Schrieffer theory of superconductivity, based on the notion that electrons with opposite momentum and spin are paired as a result of forces arising from lattice vibrations. The theory...EDU.photonics.com 9/8/2009superconductorA metal, alloy or compound that loses its electrical resistance at temperatures below a certain transition temperature referred to as Tc. High-temperature superconductors occur near 130 K, while...EDU.photonics.com 9/8/2009anodeThe part of an electrical circuit in which the electrons leave (a cathode-ray tube) or enter (an electrolytic cell) a unit in the circuit.EDU.photonics.com 9/8/2009conduction bandA partially filled or empty energy band through which electrons can move easily. The material can therefore carry an electric current. The term is usually applied to semiconductors.EDU.photonics.com 9/8/2009MEDIALight-Trapping & Quantum Droplets - LIGHT MATTERS 03.05.2014On this week’s show an elusive solar light-trapping limit is nearly reached, a new imaging technique visualizes live cells, and mysterious quantum droplets are discovered. Light Matters is the...Photonics.com 3/5/2014Miniature Wide-Angle Lens & Tabletop Accelerator - LIGHT MATTERS 10.02.2013-Tabletop Accelerator -UV EB Radtech -Miniature Wide-Angle Lens This week on Light Matters: lasers help shrink a particle accelerator, we bring you the latest LED news from the Radtech conference,...Photonics.com 10/2/2013Crystal Light - LIGHT MATTERS 08.12.2015A new generation of quantum dot light emitters aims to outshine the rest. See where lighting and display technology might be headed – this week on Light Matters!Photonics.com 8/12/2015Meteoric Earth Collisions - LIGHT MATTERS 02.20.2013-Cell Light Probe -X-ray Photosynthesis -New imec Camera On this week’s show, space rocks rock Earth, a probe emits light in living cells, x-raying photosynthesis, and we learn about a new camera...Photonics.com 2/20/2013PHOTONICS BUYERS' GUIDE CATEGORIESElectron Multiplication CCD Cameras (EMCCD)An electron multiplication CCD camera is a CCD device in which a solid-state electron multiplying register has been added to the end of the normal serial register. The electron multiplying register...Photomultiplier TubesA photomultiplier tube is a tube consisting of an evacuated envelope with a photocathode that emits electrons when exposed to light. These electrons are accelerated by a positive electrostatic field...Plasma Discharge Light SourcesElectron-Beam Power SuppliesCOMPANIESLaCroix Precision OpticsOptics that Defend, Build, Cure and Discover The LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have placed LaCroix Precision Optics...Photonics Buyers' GuideDiffraction LimitedDiffraction Limited is known for global leadership in Scientific Imaging Solutions. For 27 years, people like you in science, industry, biology, pharmacology, physics, engineering, and astronomy...Photonics Buyers' GuideChroma Technology Corp.Chroma Technology manufactures high performance optical interference filters using sputtering and ion beam coating technologies. We specialize in precise spectral control, and can provide filters...Photonics Buyers' GuideAndor TechnologyWe are global leaders in the development and manufacture of high performance scientific digital cameras for academic, industrial and government applications. Through continuous dialogue with our...Photonics Buyers' Guide