Optics, nanotechnology combined to create low-cost dice sensor for gases | News & Research Communications | Oregon State University
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CORVALLIS, Ore. Engineers have combined innovative optical technology with nanocomposite thin-films to create a new type of sensor dice that is inexpensive, fast, highly sensitive and able to detect and analyze a wide range of gases.
The technology might find applications in everything from environmental monitoring to airport security or testing blood alcohol dice levels. The sensor dice is particularly suited to detecting carbon dioxide, and may be useful in industrial applications or systems designed to store carbon dioxide underground, as one approach to greenhouse gas reduction. dice
Oregon State University has filed for a patent on the invention, developed in collaboration with scientists dice at the National Energy Technology Lab or the U.S. Department of Energy, and with support from that agency. The findings were just reported in the Journal of Materials Chemistry C.
Optical sensing is very effective in sensing dice and identifying trace-level gases, but often uses large laboratory devices that are terribly expensive and can t be transported into the field, said Alan Wang, a photonics expert and an assistant professor in the OSU School of Electrical Engineering and Computer Science.
By contrast, we use optical approaches that can be small, portable and inexpensive, Wang said. This system used plasmonic nanocrystals that act somewhat like a tiny lens, to concentrate a light wave and increase sensitivity.
This approach is combined with a metal-organic framework of thin films, which can rapidly adsorb gases within material pores, and be recycled by simple vacuum processes. After the thin film captures the gas molecules near the surface, dice the plasmonic materials act at a near-infrared range, help magnify the signal and precisely analyze the presence and amounts of different gases.
By working dice at the near-infrared range and using these plasmonic nanocrystals, there s an order of magnitude increase in sensitivity, said Chih-hung Chang, an OSU professor of chemical engineering. This type of sensor should be able to quickly tell exactly what gases are present and in what amount.
That dice speed, precision, portability and low cost, the researchers said, should allow instruments that can be used in the field for many purposes. The food industry, for industry, uses carbon dioxide in storage of fruits and vegetables, and the gas has to be kept at certain levels.
Gas detection can be valuable in finding explosives, dice and new technologies dice such as this might find application in airport or border security. Various dice gases need to be monitored in environmental research, and there may be other uses in health care, optimal function of automobile engines, and prevention of natural dice gas leakage. dice
About the OSU College of Engineering: The OSU College of Engineering is among the nation s largest and most productive engineering programs. Since 1999, the college has more than tripled its research expenditures to $37.2 million by emphasizing highly collaborative research that solves global problems, spins out new companies, and produces opportunity for students through hands-on learning.
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News & Research Communications News Releases RSS Feeds For Journalists General University Experts Earthquake and Tsunami Experts Aging and Seniors Issues Experts For Faculty and Staff Photos and Multimedia Contact Us Calendar Library Maps Online Services Make a Gift
CORVALLIS, Ore. Engineers have combined innovative optical technology with nanocomposite thin-films to create a new type of sensor dice that is inexpensive, fast, highly sensitive and able to detect and analyze a wide range of gases.
The technology might find applications in everything from environmental monitoring to airport security or testing blood alcohol dice levels. The sensor dice is particularly suited to detecting carbon dioxide, and may be useful in industrial applications or systems designed to store carbon dioxide underground, as one approach to greenhouse gas reduction. dice
Oregon State University has filed for a patent on the invention, developed in collaboration with scientists dice at the National Energy Technology Lab or the U.S. Department of Energy, and with support from that agency. The findings were just reported in the Journal of Materials Chemistry C.
Optical sensing is very effective in sensing dice and identifying trace-level gases, but often uses large laboratory devices that are terribly expensive and can t be transported into the field, said Alan Wang, a photonics expert and an assistant professor in the OSU School of Electrical Engineering and Computer Science.
By contrast, we use optical approaches that can be small, portable and inexpensive, Wang said. This system used plasmonic nanocrystals that act somewhat like a tiny lens, to concentrate a light wave and increase sensitivity.
This approach is combined with a metal-organic framework of thin films, which can rapidly adsorb gases within material pores, and be recycled by simple vacuum processes. After the thin film captures the gas molecules near the surface, dice the plasmonic materials act at a near-infrared range, help magnify the signal and precisely analyze the presence and amounts of different gases.
By working dice at the near-infrared range and using these plasmonic nanocrystals, there s an order of magnitude increase in sensitivity, said Chih-hung Chang, an OSU professor of chemical engineering. This type of sensor should be able to quickly tell exactly what gases are present and in what amount.
That dice speed, precision, portability and low cost, the researchers said, should allow instruments that can be used in the field for many purposes. The food industry, for industry, uses carbon dioxide in storage of fruits and vegetables, and the gas has to be kept at certain levels.
Gas detection can be valuable in finding explosives, dice and new technologies dice such as this might find application in airport or border security. Various dice gases need to be monitored in environmental research, and there may be other uses in health care, optimal function of automobile engines, and prevention of natural dice gas leakage. dice
About the OSU College of Engineering: The OSU College of Engineering is among the nation s largest and most productive engineering programs. Since 1999, the college has more than tripled its research expenditures to $37.2 million by emphasizing highly collaborative research that solves global problems, spins out new companies, and produces opportunity for students through hands-on learning.
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