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Purdue University News
Lasers Help Fabricate Solar’s Future
Mar 1, 2013 — Etching, scribing and isolating are essential functions in solar cell manufacturing, and lasers play a large part in each. Solar cells turn light into electricity. So it’s fitting that electricity converted into light – a laser – plays a vital role in making solar cells. Through laser scribing, isolating and etching, many solar cells made today undergo light-driven material removal during manufacturing. Researchers are investigating ways to improve and extend these processes...
Laser Turns Scotch Tape into ‘Smart’ Claw
WEST LAFAYETTE, Ind., Nov. 21 — Sticky tape is indispensable this time of year for wrapping gifts, but it soon could be essential year-round for a very different purpose: collecting water samples for environmental testing. A simple laser micromachining process can make wispy...
Plasmonic material bridges photonics, electronics gap
WEST LAFAYETTE, Ind. – A thin film of titanium nitride was coaxed into transporting plasmons, becoming the first nonmetal to be added to the short list of surface-plasmon-supporting materials and bridging the gap between photonics and electronics. The nonmetal could pave...
Novel Plasmonic Material Discovered
WEST LAFAYETTE, Ind., March 30, 2012 — Titanium nitride, the first nonmetal to be added to the short list of surface-plasmon-supporting materials, could bridge the gap between optics and electronics. The advance could point the way to a new class of optoelectronic devices with...
Spectroscopy Reveals Breast Tumors Early
WEST LAFAYETTE, Ind., March 7, 2012 — Mimicking living breast tissue through the new Raman-based imaging tool of vibrational spectral microscopy reveals subtle changes and can could help assess a woman’s breast cancer risk.
New Diode Opens Door to Optical Info Processing
WEST LAFAYETTE, Ind., Jan. 12, 2012 — A new type of optical device that is small enough to fit millions on a computer chip could lead to faster, more powerful information processing and supercomputers. The “passive optical diode” developed by scientists in the Birck...
Plasma Expands Under Ultrafast Beams
WEST LAFAYETTE, Ind., Dec. 20, 2012 — New insight into the behavior of ultrafast laser pulses could improve their performance in manufacturing, diagnostics and other research. A laser's pulse at durations of 100 fs, or quadrillionths of a second, causes electrons to reach...
Label-Free Bioimaging Tool Tracks Nanotubes
WEST LAFAYETTE, Ind., Dec. 12, 2011 — A new imaging tool tracks carbon nanotubes inside living cells and throughout the bloodstream, which could hone the particles’ usefulness in biomedical research and clinical medicine. Carbon nanotubes have potential applications in drug...
AFM Measures Mechanical Properties of Living Cells
WEST LAFAYETTE, Ind., Nov. 22, 2011 — A new atomic force microscope (AFM) technique that measures the mechanical properties of living cells could be used to diagnose human disease and better understand biological processes. Researchers from Purdue University and the University of...
Plasmonics, Nanophotonics Hybrid Promises Powerful Information Processing
WEST LAFAYETTE, Ind., Nov. 1, 2011 — Metamaterials and the merging of two technologies under development are promising the emergence of new quantum information systems far more powerful than today’s computers. The technology, which involves a plasmonics and nanophotonics hybrid,...
Chip-Sized Device Converts Beam to Pulses
WEST LAFAYETTE, Ind., Oct. 19, 2011 — A device that can convert continuous laser light into numerous ultrashort pulses and that is small enough to fit on a computer chip has been created by researchers at Purdue University and the National Institute of Standards and Technology (NIST),...
Computers mimic human perception of 3-D shapes
WEST LAFAYETTE, Ind. – In an effort to help machines see more like people do, two new techniques for computer-vision technology – heat mapping and heat distribution – have been developed to mimic how humans perceive 3-D shapes. The techniques apply...
Transformation Optics Bends all the Rules
Aug 1, 2011 — From invisibility cloaks to hyperlenses, and photovoltaic concentrators to superresolution microscopy, transformation optics makes big promises. In the same way that water flows can be manipulated using dams and channels, light can be made to...
Laser, Electric Fields Combined for Novel Lab-on-a-Chip Technology
WEST LAFAYETTE, Ind., July 7, 2011 — New technologies that combine a laser with electric fields promise new lab-on-a-chip designs for manipulating bacteria, viruses and DNA in a range of potential applications. A new method, dubbed “hybrid optoelectric manipulation in...
New Imaging Tech Diagnoses Multiple Diseases
WEST LAFAYETTE, Ind., June 13, 2011 — By measuring ultrasound signals from molecules exposed to a fast-pulsing laser, biomedical engineers at Purdue University developed an imaging technology that diagnoses multiple diseases.
The Ones to Watch: Nanolasers Are Breaking New Ground – and Fast
Jun 1, 2011 — Rapid advances in nanolaser research are making this area of photonics a very hot topic. Whether tackling high optical losses in nanocavities or achieving room-temperature operation, scientific groups worldwide are helping to bring the nanolaser...
New Electronics Material Closer to Commercial Reality
WEST LAFAYETTE, Ind., May 27, 2011 — Researchers have developed a method for creating single-crystal arrays of graphene, an advance that opens up the possibility of a replacement for silicon in high-performance computers and electronics. Graphene — a one-atom-thick layer of...
Ultrafast laser scribes solar cells
May 1, 2011 — A new manufacturing method using an ultrafast pulsing laser could make thin-film solar cell arrays a more efficient and less expensive means of power generation. The current method of connecting solar panels into arrays that generate usable...
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...
Precise sensor made of hydrogels
WEST LAFAYETTE, Ind. – A new type of biological and chemical sensor made of thin stripes of hydrogel, a gelatinous material that expands and contracts depending upon the acidity of its environment, has been developed by researchers at Purdue University. The sensors,...
Seeing Below the Surface
CAMBRIDGE, Mass., March 30, 2011 — A new approach to detecting internal damage in planes and other objects that employs a simple handheld device and heat-sensitive camera promises to replace traditional infrared thermography techniques that require the use of large heaters.
Ultrafast Laser Scribing Cuts Cost, Hikes Solar Cell Efficiency
WEST LAFAYETTE, Ind., March 17, 2011 — An advancement that will improve solar cell efficiency and reduce manufacturing costs involves using an ultrafast pulsed laser scribing technique to create more precise microchannels. Microchannels are critical to cost and efficiency because...
Hydrogels Form Precise Sensor
WEST LAFAYETTE, Ind., March 1, 2011 — Researchers are developing a new type of biological and chemical sensor that has few moving parts, is low-cost and yet highly sensitive, sturdy and long-lasting. The "diffraction-based" sensors are made of thin stripes of a gelatinous material...
CZTSSe solar cell shows realistic potential for commercialization
Feb 1, 2011 — Scientists at Purdue University in West Lafayette, Ind., have developed a thin-film solar cell from Earth-abundant materials. They say that their CZTSSe solar cell, which is made from CZTS nanocrystals, could provide a cost-friendly alternative to...
Laser-treated Parchment Creates Microfluidic Device
WEST LAFAYETTE, Ind., Jan. 26, 2011 — Using lasers to create patterns on common parchment paper, researchers are now able to make "microfluidic" devices for rapid medical diagnostics and chemical analysis. The innovation represents a way to enhance commercially available diagnostic...
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June 2024
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