MU engineering team develops sensor technology that could have wide application
Piezoelectric sensors measure changes in pressure, acceleration, temperature, strain or force and are used in a vast array of devices important to everyday life.
The research team created a new sensing technology platform by using adaptive metamaterial concepts. The platform creates a hybrid wave concentration mechanism through the material's ability to further tune the signal and using electric signal amplification provided by a set of circuits connected to an array of sensors.
Credit: Ryan Owens, MU College of Engineering
However, these sensors often can be limited by the "white noise" they detect that can give engineers and health care workers false readings. Now, a University of Missouri College of Engineering research team has developed methods to enhance piezoelectric sensing capabilities. Enhanced sensors could be used to improve aviation, detect structural damage in buildings and bridges, and boost the capabilities of health monitors.
Guoliang Huang, an associate professor of mechanical and aerospace engineering in the MU College of Engineering, and his team's new platform improves sensors by amplifying the signal, allowing the same amount of sensors to read more data. Their new device also cuts costs by allowing fewer sensors to cover larger structures and longer distances.
"In the past, methods to produce signal intensification only have included electrical amplification," Huang said. "Our technique uses a combination of mechanical and electrical amplification, overcoming the limitations of using just electrical amplification."
The new sensing platform can be "tuned" using an electric signal, which when connected to circuit boards with sensors can pick up weaker signals that previously could not be detected.
"The amplified wave cuts through the surrounding noise," Huang said. "It's the first such device that illustrates how to use adaptive metamaterials to improve elastic wave sensing capabilities. This can be very useful to developing high-sensitivity sensing technology."
"Enhanced flexural wave sensing by adaptive gradient-index metamaterials," was published in Scientific Reports a journal of Nature. Funding for the project was provided by the U.S. Air Force Office of Scientific Research (AF 9550-15-1-0061). Byung-Lip (Les) Lee served as the program manager. The content is solely the responsibility of the authors and does not necessarily represent the official views of the funding agency.
Editor's Note: For more on the story, please see: http://engineering.
For more on Huang's previous research, please see: http://munews.
Jeff Sossamon | EurekAlert!
Agricultural insecticide contamination threatens U.S. surface water integrity at the national scale
06.12.2018 | Universität Koblenz-Landau
Improving hydropower through long-range drought forecasts
06.12.2018 | Schweizerischer Nationalfonds SNF
What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.
Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...
Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.
Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...
New Project SNAPSTER: Novel luminescent materials by encapsulating phosphorescent metal clusters with organic liquid crystals
Nowadays energy conversion in lighting and optoelectronic devices requires the use of rare earth oxides.
Scientists have discovered the first synthetic material that becomes thicker - at the molecular level - as it is stretched.
Researchers led by Dr Devesh Mistry from the University of Leeds discovered a new non-porous material that has unique and inherent "auxetic" stretching...
Scientists from the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science (CFEL) in Hamburg have shown through theoretical calculations and computer simulations that the force between electrons and lattice distortions in an atomically thin two-dimensional superconductor can be controlled with virtual photons. This could aid the development of new superconductors for energy-saving devices and many other technical applications.
The vacuum is not empty. It may sound like magic to laypeople but it has occupied physicists since the birth of quantum mechanics.
06.12.2018 | Event News
03.12.2018 | Event News
28.11.2018 | Event News
07.12.2018 | Life Sciences
07.12.2018 | Materials Sciences
07.12.2018 | Physics and Astronomy