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Northwestern University News
Camera Mimics an Insect’s Compound Eyes
URBANA, Ill., May 1, 2013 — A hemispherical-shaped digital camera that mimics the design of ocular systems found in arthropods offers a wide-angle bug’s-eye view and nearly infinite depth of field for applications ranging from advanced surveillance cameras to miniaturized endoscopes.
Ovarian Cancer Detected Using Neighboring Cells
EVANSTON, Ill., April 30, 2013 — A minimally invasive technique that examines cells swabbed from the cervix or uterus has the potential to detect the early presence of ovarian cancer.
Active and Passive Modes in One IR Camera
EVANSTON, Ill., Jan. 21, 2013 — A new approach that integrates active and passive infrared (IR) imaging capability into a single chip has paved the way toward lighter, simpler dual-mode active/passive cameras with lower power dissipation.
Photonics Pioneer Tingye Li Dies
BOULDER, Colo., Jan. 4, 2013 — Tingye Li, renowned for his contributions to lightwave technology and optical fiber communications, died Dec. 27, 2012. He was 81.
3-D bow-tie nanolaser defies diffraction limit
EVANSTON, Ill. – Nanolaser devices operating at room temperature defy the diffraction limit, thanks to a lasing cavity composed of 3-D bow-tie-shaped metal nanoparticle dimers designed by researchers at Northwestern University. The diffraction limit has been a...
Virus-Sized Laser Defies Diffraction Limit
EVANSTON, Ill., Nov. 6, 2012 — The bow tie is a popular shape for pasta and maybe soon it will be for lasers, too. Single-laser devices the size of virus particles operate at room temperature and defy the diffraction limit, thanks to a lasing cavity composed of 3-D bow-tie-shaped...
Lasers improved for standoff sensing
EVANSTON, Ill. – A new resonator design that controls both wavelength and beam quality enables the purest, brightest and most powerful beams ever from a single-mode infrared quantum cascade laser. The work improves the accuracy of the devices, critical for boosting...
Lasers for Standoff Sensing Improved
EVANSTON, Ill., Aug. 27, 2012 — A new resonator design that controls both wavelength and beam quality enables the purest, brightest, and most powerful beams ever from a single-mode infrared quantum cascade laser. The work improves the accuracy of the devices, critical for boosting...
How to Develop a Laser Safety Culture
May 1, 2012 — What is the most important measure of a laser safety program’s success? Developing a true culture of laser safety is the ultimate goal of any serious laser safety officer. The art of inspiring and coordinating people’s activities beyond...
Super absorber could boost efficiency in solar cells
EVANSTON, Ill. – A new material that absorbs a wide range of wavelengths could lead to more efficient, less expensive solar technology. Solar cells are only as efficient as the amount of sunlight they collect. Unlike a laser, the solar spectrum is “very...
Compact terahertz device could improve security screening
EVANSTON, Ill. — Using two mid-infrared laser beams, researchers have finally generated single-chip terahertz radiation at room temperature. The technology could speed up and improve a range of processes, including high-sensitivity biological and chemical analysis,...
Giving Light 'Amnesia' Boosts Solar Cells
ARGONNE, Ill., Sept. 30, 2011 — Solar concentrators that rely on mirrors and lenses typically require expensive tracking systems. But another type of cell, a luminescent solar concentrator (LSC) proposed by Argonne National Laboratory and Northwestern University experts, would...
Terahertz invisibility cloak created
EVANSTON, Ill. – A new cloaking material can render objects invisible in the terahertz range. While the design does not create an invisibility cloak for the visible spectrum, it could have applications in diagnostics, security and communications. The cloak,...
Terahertz Invisibility Cloak Created
EVANSTON, Ill., May 4, 2011 — Researchers at Northwestern University have created a cloaking material that can render objects invisible in the terahertz range. Although the design can’t translate into an invisibility cloak for the visible spectrum, it could have...
AMOLEDs: A Bright and Flexible Future
Apr 1, 2011 — They’re bright and getting bigger, and they can be flexible as well. AMOLED (active-matrix organic light-emitting diode) displays promise devices that offer vibrant color, fit in the palm of the hand or across the wall of a room, and come in...
Switcher Takes Quantum Communication to New Level
EVANSTON, Ill., March 14, 2011 — The first all-optical switch suitable for single-photon quantum communications has been developed at Northwestern University. The switching device raises quantum communication to a new level, representing a step toward building a network that takes...
Best Biophotonics Ideas on Display
Jan 31, 2011 — At Photonics West on Monday, as the BiOS part of the week was winding down, SPIE sponsored its first Biophotonics Start-Up Challenge. Based on the concept of the “elevator pitch,” 19 researchers – mostly newly minted PhDs and...
Mix of Nanoparticles, DNA Create Photonic Crystals
ROCHESTER, N.Y., Jan. 28, 2011 — Scientists have created a diamond-like lattice composed of gold nanoparticles and viral particles, woven together and held in place by strands of DNA. The structure — a distinctive mix of hard, metallic nanoparticles and organic viral pieces...
Imaging Between a Rock and a Hard Tooth
EVANSTON, Ill., Jan. 20, 2011 — Here’s something to chew on: An imaging technique sensitive enough to be used at the atomic scale has been used for the first time to create 3-D maps of the teeth of chitons – a class of marine mollusks that can literally chew rock...
SPIE Journal Details Advances in QCLs
BELLINGHAM, Wash., Dec. 20, 2010 — The accelerated pace of development of quantum cascade laser (QCL) technology and its many applications — such as detecting explosive chemicals on clothing, monitoring greenhouse gases and measuring blood sugar levels via breath analysis...
Novel High-Res IR Camera Announced
EVANSTON, Ill., Dec. 14, 2010 — Researchers at Northwestern University have created a new infrared camera based on Type-II InAs/GaSb superlattices that produces much higher resolution images than previous infrared cameras. Image of graduate student of Northwestern...
Lung Cancer Detection Gets Cheeky
EVANSTON, Ill., Nov. 16, 2010 — Using pioneering biophotonics technology, researchers at Northwestern University and NorthShore University HealthSystem (NorthShore) have developed a method to detect early signs of lung cancer by examining cheek cells in humans. “By...
Tiny antennas squeeze light for better biosensors
EVANSTON, Ill. – A new class of biosensors could be at hand, according to Northwestern University researchers. They constructed composite metal-dielectric-metal nanoantennas on the facet of a quantum cascade laser, thereby boosting the incident optical field...
Shrinky Dinks Heat Up Nanopatterning
EVANSTON, Ill., Aug. 17, 2010 — Nanoscientists are using flexible plastic sheets modeled after the popular shrinkable plastic toy Shrinky Dinks as the backbone of a new, inexpensive way to create, test and mass-produce large-area patterns at the nanoscale.
Lensless Imaging of Whole Cells
BERKELEY, Calif. May 7, 2010 — Scientists working at beamline 9.0.1 of the Advanced Light Source (ALS) at the US Department of Energy’s Lawrence Berkeley National Laboratory have used x-ray diffraction microscopy to make images of whole yeast cells, achieving the highest...
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May 2024
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