Tech
Newly Invented Nano-Scale Terahertz Detector Could Make Molecule 'Scanners' Possible
Mark Hoffman
First Posted: Aug 06, 2013 05:24 PM EDT
Molecules could soon be "scanned" in a fashion similar to imaging screenings at airports, thanks to a detector developed by University of Pittsburgh physicists.
The detector, featured in a recent issue of Nano Letters, may have the ability to chemically identify single molecules using terahertz radiation -- a range of light far below what the eye can detect.
"Our invention allows lines to be 'written' and 'erased' much in the manner that an Etch A Sketch® toy operates," said study coauthor Jeremy Levy, professor in the Department of Physics and Astronomy within the Kenneth P. Dietrich School of Arts and Sciences. "The only difference is that the smallest feature is a trillion times smaller than the children's toy, able to create conductive lines as narrow as two nanometers."
"We believe it would be possible to isolate and probe single nanostructures and even molecules -- performing 'terahertz spectroscopy' at the ultimate level of a single molecule," said Levy. "Such resolution will be unprecedented and could be useful for fundamental studies as well as more practical applications."
Levy and his team are currently performing spectroscopy of molecules and nanoparticles. In the future, they hope to work with a C60, a well-known molecule within the terahertz spectrum. -- University of Pittsburgh
Reference:
Yanjun Ma, Mengchen Huang, Sangwoo Ryu, Chung Wung Bark, Chang-Beom Eom, Patrick Irvin, Jeremy Levy. Broadband Terahertz Generation and Detection at 10 nm Scale. Nano Letters, 2013; 13 (6): 2884 DOI: 10.1021/nl401219v
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First Posted: Aug 06, 2013 05:24 PM EDT
Molecules could soon be "scanned" in a fashion similar to imaging screenings at airports, thanks to a detector developed by University of Pittsburgh physicists.
The detector, featured in a recent issue of Nano Letters, may have the ability to chemically identify single molecules using terahertz radiation -- a range of light far below what the eye can detect.
"Our invention allows lines to be 'written' and 'erased' much in the manner that an Etch A Sketch® toy operates," said study coauthor Jeremy Levy, professor in the Department of Physics and Astronomy within the Kenneth P. Dietrich School of Arts and Sciences. "The only difference is that the smallest feature is a trillion times smaller than the children's toy, able to create conductive lines as narrow as two nanometers."
"We believe it would be possible to isolate and probe single nanostructures and even molecules -- performing 'terahertz spectroscopy' at the ultimate level of a single molecule," said Levy. "Such resolution will be unprecedented and could be useful for fundamental studies as well as more practical applications."
Levy and his team are currently performing spectroscopy of molecules and nanoparticles. In the future, they hope to work with a C60, a well-known molecule within the terahertz spectrum. -- University of Pittsburgh
Reference:
Yanjun Ma, Mengchen Huang, Sangwoo Ryu, Chung Wung Bark, Chang-Beom Eom, Patrick Irvin, Jeremy Levy. Broadband Terahertz Generation and Detection at 10 nm Scale. Nano Letters, 2013; 13 (6): 2884 DOI: 10.1021/nl401219v
See Now: NASA's Juno Spacecraft's Rendezvous With Jupiter's Mammoth Cyclone