Featured Research

from universities, journals, and other organizations

The molecule 'scanner': World's smallest terahertz detector invented

Date:
August 5, 2013
Source:
University of Pittsburgh
Summary:
Molecules could soon be "scanned" in a fashion similar to imaging screenings at airports, thanks to a new detector.

An artist’s rendering of molecules being “screened” by a nanoscale terahertz spectrometer.
Credit: Image courtesy of University of Pittsburgh

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."

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 research was supported by grants from the United States Air Force Office of Scientific Research and the National Science Foundation.


Story Source:

The above story is based on materials provided by University of Pittsburgh. Note: Materials may be edited for content and length.


Journal Reference:

  1. 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

Cite This Page:

University of Pittsburgh. "The molecule 'scanner': World's smallest terahertz detector invented." ScienceDaily. ScienceDaily, 5 August 2013. <www.sciencedaily.com/releases/2013/08/130805223512.htm>.
University of Pittsburgh. (2013, August 5). The molecule 'scanner': World's smallest terahertz detector invented. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2013/08/130805223512.htm
University of Pittsburgh. "The molecule 'scanner': World's smallest terahertz detector invented." ScienceDaily. www.sciencedaily.com/releases/2013/08/130805223512.htm (accessed July 24, 2014).

Share This




More Matter & Energy News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) — Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) — When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) — 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com
Boeing Ups Outlook on 52% Profit Jump

Boeing Ups Outlook on 52% Profit Jump

Reuters - Business Video Online (July 23, 2014) — Commercial aircraft deliveries rose seven percent at Boeing, prompting the aerospace company to boost full-year profit guidance- though quarterly revenues missed analyst estimates. Bobbi Rebell reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins