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NANO NEWS
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Light Polarization Reveals Chiral Side of Silicon
PHILADELPHIA, July 24, 2015 — Polarized light can bring out an unexpected electrical property in silicon, potentially unlocking new possibilities for computing. University of Pennsylvania researchers examining a silicon device caused current to flow in one direction by shining clockwise-polarized light on it; counterclockwise-polarized light caused current to flow in the opposite direction. A silicon-based photonic device exhibits unexpected topological effects when illuminated with clockwise- and...

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Graphene Confines Light for Nanomolecular Sensing
LAUSANNE, Switzerland, July 10, 2015 — A plasmonic sensor made of graphene can conduct complex analyses of the smallest molecules without altering them. The device overcomes a limitation of traditional IR absorption spectroscopy, according to researchers at the Swiss Federal...
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IOP Recognizes 4 for Photonics, Optics Research
LONDON, July 8, 2015 — The Institute of Physics (IOP) has recognized four photonics researchers with its 2015 awards. Professor Eli Yablonovitch of the University of California, Berkeley, a pioneer in the field of optoelectronics and nanophotonics, received the...

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Plasmon Wakes Created, Controlled in Metamaterial
CAMBRIDGE, Mass., July 7, 2015 — Surface plasmons can exhibit wakes likes any other wave, and those wakes can be controlled through nanoscale features on a metallic surface and through properties of the light shining on it. The creation and control of surface plasmon wakes...
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Strain Measurement Optimizes Nanowire LEDs
COPENHAGEN, Denmark, June 30, 2015 — Tiny defects can affect the performance of nanowire LEDs. Now researchers have a way to detect these defects and potentially correct them. A team from the Niels Bohr Institute at the University of Copenhagen used x-ray microscopy to pinpoint...

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Optical Cavity Allows Measurement of Nanosystems
MUNICH, June 26, 2015 — A new type of microscope uses an optical cavity to enhance image signals dramatically and enable detailed measurements of the structure and movements of individual nanoparticles. The technique has potential applications in biology, chemistry,...
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Metamaterial Waveguide Confirms Theoretical Prediction
ATLANTA, June 16, 2015 — A metamaterial waveguide has demonstrated opposite refractive indices at the fundamental and harmonic frequencies of light, confirming for the first time a decade-old theoretical prediction. The experimental verification of backward phase...

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Metamaterial Hyperlens Breaks Diffraction Limit
BUFFALO, N.Y., May 26, 2015 — A new metamaterial design has enabled a hyperlens capable of imaging details smaller than the wavelengths of visible light. Developed at The State University of New York at Buffalo, the new device relies on a nonresonant, waveguide-coupled...
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Solar Nanowire-Bacteria Array Converts CO2 into Useful Chemicals
BERKELEY, Calif., April 23, 2015 — A new artificial photosynthesis process could be used to capture carbon dioxide emissions and convert them into plastics, drugs and fuels with help from sunlight. Scientists with the U.S. Department of Energy’s Lawrence Berkeley National...

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Perovskite Nanowires Yield Efficient, Tunable Lasers
MADISON, Wis., April 13, 2015 — A “freshman-chemistry-level” technique for growing nanowires produces tunable lasers that are nearly 100 percent efficient. With low lasing thresholds and Q factors around 3600, these single-crystal lead halide perovskite nanowires...
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Plasmonic Nanodiscs Boost 2-D Material’s Light Emission
EVANSTON, Ill., April 7, 2015 — Augmenting molybdenum disulfide with plasmonic nanodiscs transforms the 2-D material into a promising light emitter. Researchers at Northwestern and Arizona State universities have found that a periodic array of 130-nm silver discs on top of a...

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Melody Encoded onto Plasmonic Nanostructure
CHAMPAIGN, Ill., March 17, 2015 — With data storage capacity 5600 times greater than magnetic film, a chip made of tiny gold bow ties could be the next best place to store all your MP3s. Researchers from the University of Illinois at Urbana-Champaign recently created the...
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Photothermal Nanoparticles Extend Range of Optogenetics
CHICAGO, March 12, 2015 — Targeted gold nanoparticles allow light to activate neurons, a finding that could enable the use of optogenetic techniques without genetic manipulation. “This is effectively optogenetics without genetics,” said professor Dr....

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Nanowire Optical Properties Tuned by Alloy Catalyst
BERKELEY, Calif., March 9, 2015 — A new growth catalyst gives greater control over the colors of light emitted by gallium nitride nanowires. Rather than using a single metal, researchers at Lawrence Berkeley National Laboratory used gold-nickel alloys as a catalyst. By...
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Cubic Nanoantennas Eyed for NEMS Biosensors
CLAYTON, Victoria, Australia, Feb. 24, 2015 — Lab-on-a-chip applications could benefit from cubic nanoantennas that direct light more effectively than spherical ones. The cubes, which are composed of insulating rather than conducting or semiconducting materials, are easier to fabricate...

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Organic Solar Cells Unaffected by Nanostructure
RALEIGH, N.C., Feb. 4, 2015 — Bulk heterojunction organic solar cells that are highly organized at the nanoscale are no more efficient at creating free electrons than cells with poorly organized structures. That is the finding of a research team led by North Carolina State...
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Nanolaser Detects Biomolecules
YOKOHAMA, Japan, Jan. 13, 2015 — A laser biosensor has demonstrated a simpler way to identify DNA and biomarker proteins via changes in a solution’s surface charge density or pH. A team from Yokohama National University developed the GaInAsP photonic crystal nanolaser...

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Light Propagation Made Visible in Solar Cells
JÜLICH, Germany, Jan. 2, 2015 — Near-field optical microscopy has provided a glimpse inside the workings of thin-films solar cells, potentially offering a route to optimizing them and other nanophotonic devices. The technique uses a glass fiber tip to measure the amount of...
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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...

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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 head...
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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 under...

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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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