Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


The Molecule “Scanner”

Pitt invents the world’s smallest terahertz detector

Molecules could soon be “scanned” in a fashion similar to imaging screenings at airports, thanks to a detector developed by University of Pittsburgh physicists.

CAPTION: An artist’s rendering of molecules being “screened” by a nanoscale terahertz spectrometer

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.”

Terahertz radiation refers to a color range far beyond what the eye can see and is useful for identifying specific types of molecules. This type of radiation is generated and detected with the help of an ultrafast laser, a strobe light that turns on and off in less than 30 femtoseconds (a unit of time equal to 10-15-of a second). Terahertz imaging is commonly used in airport scanners, but has been hard to apply to individual molecules due to a lack of sources and detectors at those scales.

“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.

The oxide materials used for this research were provided by study coauthor Chang-Beom Eom, Theodore H. Geballe Professor and Harvey D. Spangler Distinguished Professor at the University of Wisconsin-Madison College of Engineering.

Additional collaborators include, from Pitt’s Department of Physics and Astronomy, Research Assistant Professor Patrick Irvin, Yanjun Ma (A&S ’13G), and Mengchen Huang (A&S ’13). Also involved was the University of Wisconsin-Madison’s Sangwoo Ryu and Chung Wung Bark.

The paper, “Broadband Terahertz Generation and Detection at 10 nm Scale,” was published in Nano Letters, a publication produced by the American Chemical Society. The research was supported by grants from the United States Air Force Office of Scientific Research and the National Science Foundation.


B. Rose Huber
Cell: 412-328-6008

B. Rose Huber | EurekAlert!
Further information:

More articles from Physics and Astronomy:

nachricht Scientists invented method of catching bacteria with 'photonic hook'
20.03.2018 | ITMO University

nachricht A new kind of quantum bits in two dimensions
19.03.2018 | Vienna University of Technology

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Tiny implants for cells are functional in vivo

For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.

In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

Im Focus: ILA 2018: Laser alternative to hexavalent chromium coating

At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.

When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

Latest News

Thawing permafrost produces more methane than expected

20.03.2018 | Earth Sciences

Scientists invented method of catching bacteria with 'photonic hook'

20.03.2018 | Physics and Astronomy

Next Generation Cryptography

20.03.2018 | Information Technology

Science & Research
Overview of more VideoLinks >>>