Good Vibrations for the Future of Computing
October 4, 2017 | KAUSTEstimated reading time: 2 minutes
Vibrating mechanical switches that can be cascaded to perform complex computational operations could take computing significantly further than today’s technologies. KAUST researchers have demonstrated an alternative technology based on mechanical vibrations.
The cascadable, vibration-driven microelectromechanical logic gate takes electrical signals as inputs and produces a logic output (1 or 0) based on the resonance of the microbeam.
The microcomputer processors found inside every computer, mobile phone and microwave comprise mind-bogglingly complex networks of millions or billions of microscopic transistors—electrical switches that turn on when a current flows across their terminals. These transistors are networked together to construct logic gates that perform operations, such as AND (when two inputs are on) and OR (when either input is on). In turn, these logic gates are connected to much larger networks to allow increasingly complex operations.
With each transistor consuming electrical current and generating heat even when not being actively switched, and with transistors approaching their physical limits of miniaturization and efficiency, the search is on for alternative technology that will eventually replace the electrical transistor and take computing into the future.
Saad Ilyas and Nizar Jaber, doctoral researchers in the laboratory of Mohammad Younis, have now demonstrated a scalable, efficient alternative technology, not based on electrical current, but on mechanical vibrations excited by multifrequency electrical inputs.
“Electromechanical systems offer a major advantage over existing technology in that they are leakage free: that is, unlike electrical transistors, they only consume power when switched,” explains Ilyas. “They also require fewer gates per computing function, resulting in lower complexity, and they can be fabricated with higher integration densities—it is even predicted that these systems could be scaled down to the molecular level.”
Microelectromechanical systems (MEMS) have been investigated in the past for logic operations, but it has been a challenge to devise a mode of operation that allows the MEMS logic gates to be cascaded to form arbitrary computational functions. Jaber and Younis have come up with a novel technique to perform logic operations using MEMS based on frequency mixing, which holds great potential for cascading.
“We use an electrical signal as an input, which causes a clamped polymer microbeam to vibrate at a certain resonance frequency,” says Jaber. “This in turn generates motional current as an electrical signal with the same frequency, which could then be cascaded into the input of another MEMS logic gate.”
The team demonstrated various logic operations at a single operating frequency, which is an important step towards cascading as the next milestone in MEMS resonator-based computing. Their logic gates are also compatible with existing fabrication techniques.
Suggested Items
iNEMI Names Grace O'Malley CTO
05/02/2024 | iNEMIThe Board of Directors of the International Electronics Manufacturing Initiative (iNEMI) has named Grace O'Malley Chief Technical Officer (CTO).
Dubai Launches Global Blueprint for Artificial Intelligence
05/02/2024 | BUSINESS WIREDubai has launched a blueprint for Artificial Intelligence (AI), a yearly plan that will focus on harnessing the technology’s potential to improve quality of life around the world.
NextFlex Convenes the Hybrid Electronics Community at Binghamton University
05/01/2024 | NextFlexBinghamton University hosted the NextFlex hybrid electronics community on April 18 for a day of expert presentations, breakout sessions on technology and manufacturing topics, and networking.
IDTechEx Report on Quantum Technology: Nano-scale Physics for Massive Market Impact
04/30/2024 | PRNewswireThe quantum technology market leverages nano-scale physics to create revolutionary new devices for computing, sensing, and communications. Across the industry, quantum technology offers a paradigm shift in performance compared with incumbent solutions.
TSMC Certifies Ansys Multiphysics Platforms, Enabling Next-Gen AI and HPC Chips
04/30/2024 | PRNewswireAnsys announced the certification of its power integrity platforms for TSMC's N2 technology full production release. Both Ansys RedHawk-SC and Ansys Totem are certified for power integrity signoff on the N2 process, delivering significant speed and power advantages for high performance computing, mobile chips, and 3D-IC designs.