Navigation Links
Trapping T-rays for better security scanners
Date:7/11/2013

Medical diagnostic and security scanners with higher sensitivity could result from University of Adelaide research into detecting T-rays (terahertz waves).

Published in the journal Advanced Optical Materials, the researchers describe a novel structure which traps terahertz waves in tiny (micro-scale) holes to produce much higher contrast imaging than currently possible.

Terahertz waves, which are electromagnetic waves with frequencies between those used for mobile phone communications and for optical fibre communications, are used for some airport body scanners and other security scanners to see through packages and clothes. They are also capable of distinguishing malignant from healthy tissues for cancer detection.

"This work takes an unconventional path to detecting terahertz waves," says Dr Withawat Withayachumnankul, project leader and ARC Postdoctoral Fellow in the University's School of Electrical and Electronic Engineering.

Dr Withayachumnankul has worked with RMIT University in Melbourne and Albert Ludwigs University of Freiburg in Germany to produce the new structure using metamaterials (materials that show non-natural properties with the use of carefully engineered structures).

The structure is made of tiny (micro-scale) cavities etched into the surface of silicon. Terahertz waves that hit the structure are captured and compressed inside the cavities.

"By tailoring the silicon properties through the use of micro-structures (the size of a cross-section of human hair) it is possible to trap and confine the waves in a volume much smaller than the wavelength of the terahertz waves," says Dr Withayachumnankul.

"This significantly improves the efficiency of terahertz devices such as scanners and will have broad impact on biomedicine and homeland security, where better contrast means more accurate identification."

RMIT team leader Dr Sharath Sriram says: "We needed to carefully
'/>"/>

Contact: Dr. Withawat Withayachumnankul
withawat@eleceng.adelaide.edu.au
61-402-946-480
University of Adelaide
Source:Eurekalert

Page: 1 2

Related biology news :

1. ARS scientists test improved stink bug trapping methods
2. New methods for better purification of wastewater
3. Breakthroughs in Chikungunya research from A*STAR spell new hope for better treatment and protection
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Giant squids giant eyes: The better to see hungry whales with
6. Improved loblolly pines better for the environment, study finds
7. Fish larvae find the reef by orienting: The earlier the better
8. Intensive kidney dialysis indicates better survival rates than conventional dialysis
9. Modern hybrid corn makes better use of nitrogen, study shows
10. Bigger gorillas better at attracting mates and raising young
11. Better housing conditions for zebrafish could improve research results
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/17/2014)... To date, antidotes ... doctors are often limited to supportive therapy such as induced ... of drugs involved. So what can be done if a ... professor Jean-Christophe Leroux from the Institute of Pharmaceutical Sciences at ... "The task was to develop an agent that could eliminate ...
(Date:10/16/2014)... Mary,s Virginia Institute of Marine Science have received ... Agency to identify the streams and wetlands most ... to help local governments and citizens conserve these ... a dataset of tidal-marsh observations first gathered by ... historical baseline can today,s researchers accurately map the ...
(Date:10/16/2014)... the bowel lining develops and, in the process, suggested ... The researchers produced evidence that stem cells are responsible ... feature of the bowel lining, and believe these stem ... finding as scientists are still divided on the stem ... Wee Tan and Professor Tony Burgess from the Walter ...
Breaking Biology News(10 mins):Emergency aid for overdoses 2Emergency aid for overdoses 3EPA grant will help localities conserve headwater wetlands 2EPA grant will help localities conserve headwater wetlands 3Cryptic clues drive new theory of bowel cancer development 2
... University of Tennessee, Knoxville, professor who is one of ... the world,s pre-eminent prize for ecology and environmental science. ... Studies in the Department of Ecology and Evolutionary Biology, ... The award is presented annually by the Government of ...
... other environmental factors led to the historically high number of dolphin ... released today. A team of biologists from several Gulf of ... their findings in the journal PLoS ONE . ... figure out why there were a high number of dolphin deaths, ...
... that has baffled researchers for more than 15 years: How does ... but dies on soybeans persist in fields that alternate between ... enzyme production in the rootworm gut. Their findings are described ... rotation declined in the middle of the 20th century as the ...
Cached Biology News:University of Tennessee professor wins world's top prize for ecology, environmental science 2University of Tennessee professor wins world's top prize for ecology, environmental science 3University of Tennessee professor wins world's top prize for ecology, environmental science 4Study points to causes of high dolphin deaths in Gulf of Mexico 2Team discovers how western corn rootworm resists crop rotation 2Team discovers how western corn rootworm resists crop rotation 3
(Date:10/17/2014)... Bioquell, provider of germ-eliminating robots ... facilities around the world to decontaminate locations where ... the many places the hydrogen peroxide vapor technology ... Dallas and at the National Institutes of Health ... been utilized to decontaminate patient rooms, equipment, and ...
(Date:10/17/2014)... The North American Knowledge-based/Evidence-based Clinical Decision Support ... market in North America with analysis and forecast ... America is expected to reach around $283.3 million ... from 2013 to 2018. , Browse through the ... support system (CDSS) market, to get an idea ...
(Date:10/17/2014)... October 17, 2014 The report “Feed ... by Livestock (Swine, Cattle, Poultry, Aquatic Animals & Others), ... defines and segments the global feed antioxidant market with ... terms of value for the feed antioxidants. , The ... was estimated to be worth around $191.1 million in ...
(Date:10/17/2014)... October 17, 2014 According ... by Solutions (System Management, Parallel Environment, and ... and Licenses), by Platforms (Windows, Linux and ... - Global Forecast to 2019", by MarketsandMarkets, ... of the overall market, segmented by solutions, ...
Breaking Biology Technology:Bioquell’s Vapor Producing Robots Selected to Combat Ebola in Hospitals Around the World 2Bioquell’s Vapor Producing Robots Selected to Combat Ebola in Hospitals Around the World 3Bioquell’s Vapor Producing Robots Selected to Combat Ebola in Hospitals Around the World 4Bioquell’s Vapor Producing Robots Selected to Combat Ebola in Hospitals Around the World 5Bioquell’s Vapor Producing Robots Selected to Combat Ebola in Hospitals Around the World 6The North American Knowledge-based/Evidence-based Clinical Decision Support System (CDSS) market is expected to reach around $283.3 million by 2018 - MicroMarket Monitor 2The North American Knowledge-based/Evidence-based Clinical Decision Support System (CDSS) market is expected to reach around $283.3 million by 2018 - MicroMarket Monitor 3The North American Knowledge-based/Evidence-based Clinical Decision Support System (CDSS) market is expected to reach around $283.3 million by 2018 - MicroMarket Monitor 4The North American Knowledge-based/Evidence-based Clinical Decision Support System (CDSS) market is expected to reach around $283.3 million by 2018 - MicroMarket Monitor 5Feed Antioxidants Market Projected To Reach $238.5 Million by 2018 - New Report by MarketsandMarkets 2Feed Antioxidants Market Projected To Reach $238.5 Million by 2018 - New Report by MarketsandMarkets 3Feed Antioxidants Market Projected To Reach $238.5 Million by 2018 - New Report by MarketsandMarkets 4Clustering Software Market worth $2,940.8 Million in 2019 - New Report by MarketsandMarkets 2Clustering Software Market worth $2,940.8 Million in 2019 - New Report by MarketsandMarkets 3Clustering Software Market worth $2,940.8 Million in 2019 - New Report by MarketsandMarkets 4
... SAN FRANCISCO, March 22, 2011 Practice ... winner of Analyze This! part of Health 2.0,s Spring ... health records, available free through Microsoft,s Windows Azure Marketplace, ... his application could help identify and better control the ...
... "templated growth" technique for fabricating nanoribbons of epitaxial graphene ... that conduct current with almost no resistance. These ... made with conventional architectures and set the stage ... of the quantum properties of electrons. "We can ...
... Coinstar, Inc. (Nasdaq: CSTR ) ... consumer-driven healthcare technology company that develops and deploys ... EyeSite® product and the next-generation SoloHealth Station™.  Investment ... a leader in automated retail, Coinstar is continually ...
Cached Biology Technology:Disease Control App for Doctors Wins Health 2.0 Data Challenge, Analyze This! 2Disease Control App for Doctors Wins Health 2.0 Data Challenge, Analyze This! 3Disease Control App for Doctors Wins Health 2.0 Data Challenge, Analyze This! 4Templated growth technique produces graphene nanoribbons with metallic properties 2Templated growth technique produces graphene nanoribbons with metallic properties 3Templated growth technique produces graphene nanoribbons with metallic properties 4Coinstar to Invest in SoloHealth 2Coinstar to Invest in SoloHealth 3
Human peripheral blood eosinophils, For immunohistochemistry (IHC) Cell Chip with Human Peripheral Blood Granulocytes...
Monocyte-derived dendritic cells, For immunohistochemistry (IHC) Cell Chip with Human Umbilical Cord Blood Dendritic Cells...
Umbilical cord blood CD14+ Monocytes, For immunohistochemistry (IHC) Cell Chip with Human Umbilical Cord Blood Monocytes, B Cells and NK Cells...
Umbilical cord blood CD19+ B cells, For immunohistochemistry (IHC) Cell Chip with Human Umbilical Cord Blood Monocytes, B Cells and NK Cells...
Biology Products: