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:4/17/2014)... West Orange, NJ. April 16, 2014. Kessler Foundation ... for $1.8 million from the Department of Defense ... PhD, is principal investigator for the randomized, double-blinded, ... to improve bone and muscle strength after spinal ... Human Performance & Engineering Research at Kessler Foundation. ...
(Date:4/17/2014)... per eight hundred births, Down syndrome - or trisomy ... intellectual disability. It results from a chromosomal abnormality where ... chromosome 21 (1% of the human genome). A study ... Department of Genetic Medicine and Development at the University ... Nature , shed light on how the extra chromosome ...
(Date:4/17/2014)... One day about eight years ago, Katia Silvera , ... her father were on a field trip in a mountainous ... they had never seen before. , Unable to identify it, ... The orchid turned out to be an unnamed species. So ... . , "Lophiaris" is the genus name, comprising about 40 ...
Breaking Biology News(10 mins):Kessler Foundation awarded Department of Defense grant for spinal cord injury research 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3Orchid named after UC Riverside researcher 2Orchid named after UC Riverside researcher 3
... emission of greenhouse gases over the next several decades ... a study by UC Merced marine biologist Michael Beman. ... the burning of fossil fuels and other human activities ... study shows that the increased acidity will fundamentally alter ...
... 2010)The New York Stem Cell Foundation (NYSCF) extends congratulations to ... NYSCF-Robertson Investigators, who was named one of Time Magazine,s 2010 ... the Year Issue. Dr. Rossi, an Assistant Professor of ... of an innovative method for reprogramming skin cells back into ...
... State University professor is part of a national research ... times more greenhouse gas emissions than estimated by the ... on the Konza Prairie Biological Station and other local ... demonstrate that nitrous oxide emissions from rivers and streams ...
Cached Biology News:Rising greenhouse gases profoundly impact microscopic marine life 2Time Magazine names Derrick Rossi to 2010 list of 'People Who Mattered' 2Dodds contributes to new national study on nitrogen water pollution 2
(Date:1/15/2014)... (PRWEB) January 15, 2014 The Pittcon Organizing ... of Food Safety Tech , an e-Journal and producer ... an agreement for the second year for the co-location of ... 2014. The partnership provides that the registration fee to attend ...
(Date:1/15/2014)... , Jan. 15, 2014 ­ RedBrick Health , ... change technology, today announces that EmblemHealth , the ... wellness company, is now providing the RedBrick Compass health ... program, to all of its members. EmblemHealth is among ...
(Date:1/15/2014)... NY (PRWEB) January 15, 2014 The Microcompetition ... a major disease. One of these latent viruses is the ... rheumatoid arthritis (RA). Rheumatoid arthritis (RA) is a chronic inflammatory ... theory, a study found that RA patients have high concentrations ...
(Date:1/15/2014)... 2014 TaiGen Biotechnology Company, Limited ("TaiGen") today announced ... a leading Russian pharmaceutical company, to develop and commercialize ... Federation , Turkey and ... a novel antibiotic for the treatment of bacterial infections ...
Breaking Biology Technology:Pittcon Announces Second Year Partnership With Food Safety Tech 2Pittcon Announces Second Year Partnership With Food Safety Tech 3EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4
... Antwerp, Belgium October 8, 2010 VIB researchers at ... an important role in the development of Hereditary Sensory and ... rare genetic disorder of the peripheral nervous system. Identification of ... the disease in patients as well as improved genetic counseling ...
... taken the first step to building a computer capable of ... sunny side of the planet Mercury. Te-Hao Lee, Swarup Bhunia ... of circuits - that can take twice the heat that ... Science last month. The engineers took their cue from ...
... Biocept, Inc. ("Biocept"), an emerging leader in biotechnology, announced today ... "We are pleased to welcome Bruce to our Board. ... into our next stage of development," said Stephen M. Coutts, ... practicing Certified Public Accountant since 1986.  He is also a ...
Cached Biology Technology:HSAN 1: Identification of new mutations, more accurate diagnosis and improved genetic counseling 2New computer switches handle heat that renders transistors useless 2
... Biochem/physiol Actions: Glutathione-S-transferases (GSTs) are a group ... many xenobiotics in mammals. The enzymes ... thiol group of the glutathione to electrophilic ... mutagenic, carcinogenic, and toxic effects of the ...
... Anti-GSTM1 Monoclonal Antibody Epitope: ... [Schistosoma japonicum]. Recommended Storage: ... Aliquot contents and freeze at -20 C ... of freezing and thawing. Centrifuge product if ...
... National Instruments PCIe-1429 is the industrys first ... PCIe-1429, you now can acquire images at ... available for Camera Link cameras to perform ... and image acquisition, fault analysis, and advanced ...
Amodiaquine...
Biology Products: