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Terahertz Detectors with Carbon Nanotubes...


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of the many beneficial applications for terahertz radiation, said co-au- thor Junichiro Kono of Rice Universi- ty. Terahertz waves, for example, can easily penetrate fabric and other ma- terials and could provide less intru- sive methods for security screenings of people and cargo. Terahertz imag- ing could also be used in food inspec- tion without adversely impacting food quality. Perhaps the most exciting ap-


plication offered by terahertz tech- nology, said Kono, is as a potential replacement for magnetic resonance imaging (MRI) technology in screen- ing for cancer and other diseases. “The potential improvements in


size, ease, cost and mobility of a ter- ahertz-based detector are phenome- nal,” he said. “With this technology, you could conceivably design a hand- held terahertz detection camera that images tumors in real-time, with pin- point accuracy. And it could be done without the intimidating nature of MRI technology.”


Physics of Nanotubes Sandia, its collaborators and


Léonard, in particular, have been studying carbon nanotubes and re- lated nanomaterials for years. In 2008, Léonard authored “The Physics of Carbon Nanotube De- vices,” which looks at the experimen-


tal and theoretical aspects of carbon nanotube devices. Carbon nanotubes are long, thin


cylinders composed entirely of carbon atoms. While their diameters are in the 1- to 10-nanometer range, they can be up to several centimeters long. The carbon-carbon bond is very strong, so it resists any kind of deformation. The scientific community has


long been interested in the terahertz properties of carbon nanotubes, said Léonard, but virtually all of the re- search to date has been theoretical or computer-model based. A handful of papers have investigated tera- hertz sensing using carbon nan- otubes, but those have focused main- ly on the use of a single or single bundle of nanotubes. The problem, Léonard said, is


that terahertz radiation typically re- quires an antenna to achieve cou- pling into a single nanotube due to the relatively large size of terahertz waves. The Sandia, Rice University and Tokyo Institute of Technology re- search team, however, found a way to create a small but visible-to-the- naked eye detector, developed by Rice researcher Robert Hauge and graduate student Xiaowei He, that uses carbon nanotube thin films without requiring an antenna. The technique is thus amenable to simple fabrication and represents one of the


Continued on page 37


Megan Wendling: Councilor of the Year


Continued from page 1 Megan continuously supports


SMTA China’s events as well as ac- tively promoting SMTA China con- ferences, events and technical semi- nars globally and has done so for many years. Megan’s role as Advisory Coun- cil member of SMTA China is to ad-


vise the chapter’s executive commit- tee on proficiency matters as well as public relations for the SMTA chap- ters and council. She received this award because of her exceptional, consistent support of the SMTA. This award is based on MW Associates’ contributions to the SMTA, including attendance at technical programs, support of chapter and/or national leaders, encouragement and support of participating members, and more. Contact: Megan Wendling,


% 239-530-8790 E-mail: mwendling@meganwendling.com r


Contents


Tech-Op-Ed ........................... 4 Tech Watch ........................... 10 People.................................... 12 Business News........................ 14 Business Briefs....................... 15 Management........................ 16 EMS .................................... 18 ElectronicMfg. Prods............. 24 Production.......................... 46 Partnering........................... 48 Distribution........................ 50 New Products....................... 78 High-Tech Events................... 92 Editorial Calendar............... 92 Advertisers Index.................... 94


Special Focus: Test and Assembly................. 52


Product Preview: Semicon West and Intersolar .......................... 64


See at SEMICON West, Booth 1225


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