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Aktuell im WWW => *** PRESSEMELDUNGEN *** => Topic started by: Pangwall on June 24, 2024, 07:02:58 PM
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Einige Windbeutel verbreiten jetzt Meldungen über Handys mit Röntgenblick. Eine kurze Suche liefert aber den Weg direkt zur Quelle der Entwicklung an der Universität von Dallas, Texas.
Hier ist die Pressemeldung:
https://news.utdallas.edu/science-technology/superman-inspired-imager-chip-2024/
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News Center > Science & Technology
Researchers Make Big Strides with Superman-Inspired Imager Chip
By Kim Horner | June 7, 2024
Researchers, including electrical engineering graduate student Walter Sosa Portillo BS’21 (left) and Dr. Kenneth K. O, have made advances to miniaturize an imager chip inspired by Superman’s X-ray vision for handheld mobile devices.
Researchers from The University of Texas at Dallas and Seoul National University have developed an imager chip inspired by Superman’s X-ray vision that could be used in mobile devices to make it possible to detect objects inside packages or behind walls.
Chip-enabled cellphones might be used to find studs, wooden beams or wiring behind walls, cracks in pipes, or outlines of contents in envelopes and packages. The technology also could have medical applications.
The researchers first demonstrated the imaging technology in a 2022 study. Their latest paper, published in the March print edition of IEEE Transactions on Terahertz Science and Technology, shows how researchers solved one of their biggest challenges: making the technology small enough for handheld mobile devices while improving image quality.
“This technology is like Superman’s X-ray vision. Of course, we use signals at 200 gigahertz to 400 gigahertz instead of X-rays, which can be harmful,” said Dr. Kenneth K. O, director of the Texas Analog Center of Excellence (TxACE) and the Texas Instruments Distinguished University Chair in the Erik Jonsson School of Engineering and Computer Science.
The research was supported by the Texas Instruments (TI) Foundational Technology Research Program on Millimeter Wave and High Frequency Microsystems and the Samsung Global Research Outreach Program.
View full graphic.
“It took 15 years of research that improved pixel performance by 100 million times, combined with digital signal processing techniques, to make this imaging demonstration possible. This disruptive technology shows the potential capability of true THz imaging,” said Dr. Brian Ginsburg, director of RF/mmW and high-speed research at TI’s Kilby Labs.
With privacy issues in mind, the researchers designed the technology for use only at close range, about 1 inch from an object. For example, if a thief tried to scan the contents of someone’s bag, the thief would need to be so close that the person would be aware of what they were doing, O said. The next iteration of the imager chip should be able to capture images up to 5 inches away and make it easier to see smaller objects.
The imager emits 300-GHz signals in the millimeter-wave band of electromagnetic frequencies between microwave and infrared, which the human eye cannot see and is considered safe for humans. A similar technology, using microwaves, is used in large, stationary passenger screeners in airports.
“We designed the chip without lenses or optics so that it could fit into a mobile device. The pixels, which create images by detecting signals reflected from a target object, have the shape of a 0.5-mm square, about the size of a grain of sand,” said Dr. Wooyeol Choi, assistant professor at Seoul National University and the corresponding author of the latest paper.
The advances to miniaturize the imager chip for mobile devices are the result of nearly two decades of research by O and his team of students, researchers and collaborators through the TxACE at UT Dallas. TxACE is supported by the Semiconductor Research Corp., TI, the UT System and UT Dallas.
A study author and electrical engineering graduate student Walter Sosa Portillo BS’21 came to work in O’s lab as an undergraduate after learning about this imaging research.
“The first day I came to orientation, they talked about Dr. O’s research, and I thought it was really interesting and pretty cool to be able to see through things,” said Portillo, who is researching medical applications for the imager.
Additional co-authors of the study include first author Pranith Reddy Byreddy MS’16, PhD’22, now at Qualcomm Technologies Inc.; Yukun Zhu PhD’22, now at HiSilicon in China; electrical engineering doctoral student Suprovo Ghosh MS’19; Harshpreet Singh Bakshi MS’18, PhD’22, now at TI; electrical engineering doctoral student Jayson P. Van Marter BS’20; and Dr. Murat Torlak, professor of electrical and computer engineering.
The imager emits 300-GHz signals in the millimeter-wave band of electromagnetic frequencies between microwave and infrared, which the human eye cannot see and is considered safe for humans.
Media Contact: Kim Horner, UT Dallas, 972-883-4463, kim.horner@utdallas.edu, or the Office of Media Relations, UT Dallas, (972) 883-2155, newscenter@utdallas.edu.
Tagged: Dr. Kenneth O ECS research
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Dem vorangegangen ist lange und harte Arbeit. Hier eine Pressemeldung der Universität vom April 2012!
https://news.utdallas.edu/science-technology/new-research-could-mean-cellphones-that-can-see-th/
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News Center > Science & Technology
New Research Could Mean Cellphones That Can See Through Walls
By Office of Media Relations | April 18, 2012
TxACE director Kenneth O (left), professor of electrical engineering, with member Dae Yeon Kim
Dr. Kenneth O, director of the Texas Analog Center of Excellence and a professor of electrical engineering, left, worked with a team including Dae Yeon Kim, who was among the authors of the research report.
Comic book hero superpowers may be one step closer to reality after the latest technological feats made by researchers at UT Dallas. They have designed an imager chip that could turn mobile phones into devices that can see through walls, wood, plastics, paper and other objects.
The team’s research linked two scientific advances. One involves tapping into an unused range in the electromagnetic spectrum. The other is a new microchip technology.
The electromagnetic spectrum characterizes wavelengths of energy. For example, radio waves for AM and FM signals, or microwaves used for cell phones or the infrared wavelength that makes night vision devices possible.
But the terahertz band of the electromagnetic spectrum, one of the wavelength ranges that falls between microwave and infrared, has not been accessible for most consumer devices.
“We’ve created approaches that open a previously untapped portion of the electromagnetic spectrum for consumer use and life-saving medical applications,” said Dr. Kenneth O, professor of electrical engineering at UT Dallas and director of the Texas Analog Center of Excellence (TxACE). “The terahertz range is full of unlimited potential that could benefit us all.”
Tapping the Terahertz Gap
Shown is the electromagnetic spectrum, from radio waves used for FM and AM signals, to infrared waves used for remote controls, to gamma rays that kill cancer cells. A team at UT Dallas is focusing on the “terahertz band,” which has not been accessible for most consumer devices.
Tapping the Terahertz Gap
Using the new approach, images can be created with signals operating in the terahertz (THz) range without having to use several lenses inside a device. This could reduce overall size and cost.
The second advance that makes the findings applicable for consumer devices is the technology used to create the microchip. Chips manufactured using CMOS (Complementary Metal-Oxide Semiconductor) technology form the basis of many consumer electronic devices used in daily life such as personal computers, smart phones, high definition TV and game consoles.
“CMOS is affordable and can be used to make lots of chips,” Dr. O said. “The combination of CMOS and terahertz means you could put this chip and a transmitter on the back of a cellphone, turning it into a device carried in your pocket that can see through objects.” Due to privacy concerns, Dr. O and his team are focused on uses in the distance range of less than four inches.
Consumer applications of such technology could range from finding studs in walls to authentication of important documents. Businesses could use it to detect counterfeit money. Manufacturing companies could apply it to process control. There are also more communication channels available in terahertz than the range currently used for wireless communication, so information could be more rapidly shared at this frequency.
Terahertz Chip
Media Coverage
The Dallas Morning News: “Talking With UT-Dallas’ Dr. O About His X-Ray Cell Phone”
The Los Angeles Times: “X-Ray Vision Cell Phone”
PC Magazine: “UT Dallas Research Advances Could Lead to X-Ray Phones”
Popular Science: “Terahertz-Band Cell Phones Could See Through Walls”
USA Today: “Researchers Explore X-Ray Vision for Mobile Phones”
Terahertz can also be used for imaging to detect cancer tumors, diagnosing disease through breath analysis, and monitoring air toxicity.
“There are all kinds of things you could be able to do that we just haven’t yet thought about,” said Dr. O, holder of the Texas Instruments Distinguished Chair.
The research was presented at the most recent International Solid-State Circuits Conference (ISSCC). The team will work next to build an entire working imaging system based on the CMOS terahertz system.
Other authors of the paper include Ruonan Han and Yaming Zhang, former students of Professor O, Youngwan Kim and Dae Yeon Kim, TxACE members, and Hisashi Sam Shichijio, research professor at TxACE.
The work was supported by the Center for Circuit & System Solutions (C2S2 Center) and conducted in the TxACE laboratory at UT Dallas, which is funded by the Semiconductor Research Corporation (SRC), the state through its Texas Emerging Technology Fund, Texas Instruments Inc., The UT System and UT Dallas.
Media Contact: The Office of Media Relations, UT Dallas, (972) 883-2155, newscenter@utdallas.edu.
Tagged: ECS research
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