- About Us
- Career Center
- Nano-Social Network
- Nano Consulting
- My Account
Tel Aviv University pioneers sensor technology for industry using nano-sized carbon tubes
Electro-mechanical sensors tell the airbag in your car to inflate and rotate your iPhone screen to match your position on the couch. Now a research group of Tel Aviv University's Faculty of Engineering is making the technology even more useful.
Prof. Yael Hanein, Dr. Slava Krylov and their doctoral student Assaf Ya`akobovitz have set out to make sensors for microelectromechanical systems (MEMS) significantly more sensitive and reliable than they are today. And they're shrinking their work to nano-size to do it.
More sensitive sensors means more thrilling videogames, better functioning prosthetic limbs, cars that can detect collisions and dangerous turns before they occur, and ¯ in the defense industry ¯ missiles that can reach a target far more precisely.
Able to "feel" and sense the movement of individual atoms, the researchers' new MEMS sensing device uses small carbon tubes, nano in size ¯ about one-billionth of a meter long. Creating these tiny tubes using a process involving methane gas and a furnace, Prof. Hanein has developed a method whereby they arrange themselves on a surface of a silicon chip to accurately sense tiny movements and changes in gravity.
In the device developed by Prof. Hanein's and Dr. Krylov's team, a very tiny nanometer scale tube is added onto much larger micrometer-scale MEMS devices. Small deformities in the crystal structure of the tubes register a change in the movement of the nano object, and deliver the amplitude of the movement through an electrical impulse. "It's such a tiny thing," she says. "But at our resolution, we are able to feel the motion of objects as small as a few atoms."
"Originally developed mainly for the car industry, miniature sensors are all around us," says Prof. Hanein. "We've been able to fabricate a new device where the nano structures are put onto a big surface ¯ and they can be arranged in a process that doesn't require human intervention, so they're easier to manufacture. We can drive these nano-sensing tubes to wherever we need them to go, which could be very convenient and cost-effective across a broad spectrum of industries."
Until now, Prof. Hanein explains, the field of creating sensors for nanotechnology has been primarily based on manual operation requiring time-consuming techniques. Prof. Hanein and her team have developed a sensitive but abundant and cost-effective material that can be coated onto prosthetic limbs, inserted into new video games for more exciting play, and used by the auto industry to detect a potential collision before it becomes fatal.
The technology has been presented in a number of peer-reviewed journals including the Journal of Micromechanics and Micro-engineering; at a MEMS conference in Hong Kong; and at a nano conference in Tirol, Austria in March.
Markets in motion
The market for MEMS devices, which take mechanical signals and convert them into electrical impulses, is estimated to be worth billions. "The main challenge facing the industry today is to make these basic sensors a lot more sensitive, to recognize minute changes in motion and position. Obviously there is a huge interest from the military, which recognizes the navigation potential of such technologies, but there are also humanitarian and recreational uses that can come out of such military developments," Prof. Hanein stresses. More sensitive MEMS could play a role in guided surgery, for example.
The TAU team is working on optimizing the system, hoping to make it at least 100 times more sensitive than any sensor device on the market today.
About Tel Aviv University
Located in Israel's cultural, financial and industrial heartland, Tel Aviv University is the largest university in Israel and the biggest Jewish university in the world. It is a major center of teaching and research, comprising nine faculties, 106 departments, and 90 research institutes. Its origins go back to 1956, when three small education units - The Tel Aviv School of Law and Economics, an Institute of Natural Sciences, and an Institute of Jewish Studies - joined together to form the University of Tel Aviv.
For more information, please click here
Copyright © Tel Aviv UniversityIf you have a comment, please Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
|Related News Press|
News and information
Mechanical quanta see the light January 20th, 2016
Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016
NIST illuminates transfer of nanoscale motion through microscale machine September 14th, 2016
STMicroelectronics Earns MEMS Manufacturer of the Year Award August 1st, 2016
Picosun patents ALD nanolaminate to prevent electronics from overheating September 28th, 2016
World's most powerful X-ray takes a 'sledgehammer' to molecules September 14th, 2016
Researchers design solids that control heat with spinning superatoms: Carnegie Mellon University and Columbia University collaborators discover the cause of vastly different thermal conductivities in superatomic structural analogues September 8th, 2016
For first time, carbon nanotube transistors outperform silicon September 8th, 2016
GLOBALFOUNDRIES to Deliver Industry’s Leading-Performance Offering of 7nm FinFET Technology: Company extends its leading-edge roadmap for products demanding the ultimate processing power September 15th, 2016
A versatile method to pattern functionalized nanowires: A team of researchers from Hokkaido University has developed a versatile method to pattern the structure of 'nanowires,' providing a new tool for the development of novel nanodevices September 9th, 2016