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NANO NEWS
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Fluorescent Dyes Target Disease Genes
JENA, Germany, Dec. 12, 2014 — Fluorescent dye-coated nanoparticles could be used to target and turn off disease-related genes. To test this concept, a team of researchers from Germany and the U.S. developed nanoparticles that interfered with cholesterol production in the livers of test animals. The biodegradable polymer nanoparticles were covered with near-infrared fluorescent polymethine dyes that made it possible to track the nanoparticles’ movements in vivo using intravital microscopy or...

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Transparent Spheres Simplify 3-D Nanolithography
RALEIGH, N.C., Dec. 9, 2014 — A photolithography technique using nanospheres could make fabrication of 3-D structures easier, and at lower costs. The new technique, developed by a team from North Carolina State University and based on oblique illumination of colloidal...
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‘Digital’ Metamaterials Constructed from the Bit Up
PHILADELPHIA, Dec. 2, 2014 — There could be a simpler way to create metamaterials, ultimately leading to light-bending invisibility cloaks and other seemingly impossible devices. A team from the University of Pennsylvania has discovered that a metamaterial with a given...

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JPK Instruments Opens US Office
BERLIN, Dec. 2, 2014 — JPK Instruments, manufacturer of nanoanalytic instrumentation for research in life sciences and soft matter, is set to expand its operations with the opening of a new U.S. office in Carpinteria, Calif., on Jan. 1. Dr. Stefan Kaemmer will...
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Biomarker System Offers Advanced Cancer Detection
SINGAPORE, Nov. 21, 2014 — A combined biomarker and drug delivery system could lead to very localized, more effective cancer treatment. Developed by researchers at Nanyang Technological University, the biomarker detects and makes visible tumor cells by lighting up...

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Metamaterial Polarizing Filter Brightens LCDs, Photos
SALT LAKE CITY, Nov. 21, 2014 — Polarizers are vital for LCDs and photography, but they waste energy by blocking enormous amounts of light. A new filter skirts this obstacle. A team from the University of Utah developed the polarizing filter, which allows more light in to...
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Nanoconstructs Aid Ovarian Cancer Targeting
RIVERSIDE, Calif., Oct. 28, 2014 — Newly developed nanostructures have proven to be effective vehicles for laser imaging and ablation of ovarian cancer cells. A team from the University of California, Riverside, and the University of Texas said their approach facilitated...

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Grant Award Furthers Study of SWIR Light for Detecting Cancer
PISCATAWAY TOWNSHIP, N.J., Oct. 22, 2014 — Detecting cancer as early as possible can be crucial to providing effective treatment. The continuing development of a new imaging method could do just that. A Rutgers University research team, along with scientists from Singapore...
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Magnetic Mirror Reflects Light in New Ways
ALBUQUERQUE, N.M., Oct. 16, 2014 — A new magnetic mirror uses non-metallic metamaterial properties to reflect IR light. Scientists at Sandia National Laboratories developed the magnetic mirror by placing nanoscale antennas at or very near the mirror’s surface, thereby...

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Fluorescent, Magnetic Nanoparticles Aid Bioimaging
CAMBRIDGE, Mass., Oct. 14, 2014 — Nanoparticles that fluoresce to enable tracking in the body can also be precisely manipulated with magnetic fields. Manipulating the particles with electromagnets is key to using them in biological research because the tiny particles could...
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Plasmon Laser Demonstrates Fastest Switching Speed
LONDON and JENA, Germany, Oct. 9, 2014 — A new plasmon semiconductor laser has demonstrated ultrafast switching speeds and is being touted as the world’s fastest. The laser was created at Imperial College London and Friedrich Schiller University Jena using semiconductor...

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Superresolution Microscopy Pioneers Win Nobel Prize in Chemistry
STOCKHOLM, Sweden, Oct. 8, 2014 — Circumventing the diffraction limit to achieve nanoscale microscope images has earned Eric Betzig, Stefan W. Hell and W.E. Moerner the 2014 Nobel Prize in Chemistry. Hell, director of the Max Planck Institute for Biophysical Chemistry in...
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Optical Switch Turns Polarization Into Direction
VIENNA, Oct. 7, 2014 — A single gold nanoparticle can translate light polarization into direction of propagation within ultrathin glass fiber. This “chiral waveguide coupler” can direct up to 94 percent of incident light in the desired direction, and...

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Nanopillars Enhance Solar Efficiency
AMHERST, Mass., Oct. 3, 2014 — Mimicking the highly efficient light-harvesting structures of blades of grass could boost power-conversion efficiency in solar panels. “For decades, scientists and engineers have placed great effort in trying to control the morphology...
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Photons Ride Optomechanical ‘Seesaw’
MINNEAPOLIS, Oct. 3, 2014 — A nanoscale “seesaw” that shuttles photons back and forth could present an optomechanical alternative for computing and sensing applications. On either side of the seesaw are photonic crystal cavities to capture photons. Optical...

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All-Metal Detector has Ultranarrow Absorption Band
EVANSTON, Ill., Oct. 2, 2014 — A new all-metal photodetector with an ultranarrow absorption band could lead to biosensors with greater sensitivity than ever. The device achieved a bandwidth of 12 nm by exploiting plasmonic surface lattice resonances of nanowire and...
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Gold Nanoclusters Enhance Solar Power
LONDON, Ontario, Canada, Sept. 30, 2014 — Gold nanoclusters could improve solar cell performance by more than 10 percent. A nanocluster made of just 144 gold atoms was used as a building block in the creation of a flexible network of plasmonic antennas that attracted extra light to...

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Existing Fab Methods Could Yield ‘Light Prison’
ENSCHEDE, Netherlands, Sept. 26, 2014 — A “prison for light” designed by Dutch theorists could be created using existing silicon-etching techniques and play a role in optical communications. The inverse woodpile photonic crystal has an atomic structure similar to...
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Deposition Technique Enables Large-Scale MoS2 Fabrication
SOUTHAMPTON, England, Sept. 24, 2014 — A new technique for fabricating larger amounts of molybdenum disulfide than previously possible could lead to an expanded array of optoelectronic devices. The technique involves depositing nanoscale MoS2 thin films on a variety of...

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Nuclear Spins Boost Electric Current in OLEDs
SALT LAKE CITY, Sept. 19, 2014 — A spintronic approach has been used to power plastic organic LEDs at room temperature and without strong magnetic fields. “We have shown we can use room-temperature, plastic electronic devices that allow us to see the orientation of...
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Color Display Technology Furthers ‘Squid Skin’ Project
HOUSTON, Sept. 16, 2014 — A new color display brings scientists one step closer to metamaterials that mimic the unique optical properties of squid, octopus and cuttlefish skin. Developed at Rice University’s Laboratory for Nanophotonics (LANP), the new...

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Nanowire Detector Assists Three-Photon Entanglement
WATERLOO, Ontario, Canada, Sept. 15, 2014 — An ultrafast, super-efficient single-photon detector has led to direct entanglement of three photons. Researchers at the University of Waterloo, with help from a team at the National Institute of Standards and Technology (NIST), made the...
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Nanocavity Switch Boasts Low Power Use
LAUSANNE, Switzerland, Sept. 8, 2014 — A new optical switch sets a record for minimal power use, making it a good candidate for nanophotonic circuitry, according to its creators. The silicon-based photonic crystal nanocavity (PCN) has a Q factor of 500,000. It was developed by a...

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Plasmonic Nanowire Shows Promise as Photonic Circuit
ROCHESTER, N.Y., and ZURICH, Sept. 5, 2014 — A new kind of nanowire efficiently guides both light and electricity. A team from the University of Rochester and the Swiss Federal Institute of Technology developed a basic photonic integrated circuit consisting of a silver nanowire and a...
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Carbon Nanotubes Get Better as Solar Cells
EVANSTON, Ill., Sept. 4, 2014 — A new type of carbon nanotube has taken a “big jump” beyond its predecessors in solar cell applications. Single-walled carbon nanotubes (SWCNT), developed by a team from Northwestern University’s McCormick School of...






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