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Home NEWS Science News Biology

Pressure sensors could ensure a proper helmet fit to help protect the brain

Bioengineer by Bioengineer
March 17, 2021
in Biology
Reading Time: 3 mins read
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Credit: Adapted from ACS Sensors 2021, DOI: 10.1021/acssensors.0c02122

Many athletes, from football players to equestrians, rely on helmets to protect their heads from impacts or falls. However, a loose or improperly fitted helmet could leave them vulnerable to traumatic brain injuries (TBIs), a leading cause of death or disability in the U.S. Now, researchers reporting in ACS Sensors have developed a highly sensitive pressure sensor cap that, when worn under a helmet, could help reveal whether the headgear is a perfect fit.

According to the U.S. Centers for Disease Control and Prevention, 1.6 to 3.8 million sports- and recreation-related TBIs occur each year in the U.S. Field data suggest that loose or improperly fitted helmets can contribute to TBIs, but no devices currently exist that can provide information about how well a helmet conforms to an individual player’s head. To help observe and better understand helmet fit, Simin Masihi, Massood Atashbar and colleagues wanted to develop highly sensitive, fabric-based sensors that could map pressure in real-time.

The researchers made their sensors by placing a porous polydimethylsiloxane (PDMS) layer between two fabric-based, conductive electrodes. They created uniform pores in the PDMS layer by mixing and heating PDMS, sodium bicarbonate (also known as baking soda) and nitric acid, which released bubbles of carbon dioxide gas. When the team applied pressure to the sensor, the porous material compressed, causing a capacitance change as the space between the two electrodes decreased. To demonstrate a wearable helmet fit system, the researchers added 16 pressure sensors to different locations on a cap. Three volunteers wore the cap under a football helmet, and the sensors correctly revealed that the person with the largest head measurements felt the most pressure around his head, particularly in the front. The fit cap could help athletes select the proper off-the-shelf helmet for their head and allow manufacturers to develop custom helmets to reduce the severity of sports-related head injuries, the researchers say.

###

The authors acknowledge funding from Xenith, LLC, the Michigan Corporate Relations Network, the Center for Advanced Smart Sensors and Structures and Western Michigan University.

The paper’s abstract will be available on March 17 at 8 a.m. Eastern time here: http://pubs.acs.org/doi/abs/10.1021/acssensors.0c02122

For more of the latest research news, register for our upcoming meeting, ACS Spring 2021. Journalists and public information officers are encouraged to apply for complimentary press registration by emailing us at [email protected].

The American Chemical Society (ACS) is a nonprofit organization chartered by the U.S. Congress. ACS’ mission is to advance the broader chemistry enterprise and its practitioners for the benefit of Earth and its people. The Society is a global leader in providing access to chemistry-related information and research through its multiple research solutions, peer-reviewed journals, scientific conferences, eBooks and weekly news periodical Chemical & Engineering News. ACS journals are among the most cited, most trusted and most read within the scientific literature; however, ACS itself does not conduct chemical research. As a specialist in scientific information solutions (including SciFinder® and STN®), its CAS division powers global research, discovery and innovation. ACS’ main offices are in Washington, D.C., and Columbus, Ohio.
 

To automatically receive news releases from the American Chemical Society, contact [email protected].
 

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Katie Cottingham
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Tags: Biomedical/Environmental/Chemical EngineeringChemistry/Physics/Materials SciencesneurobiologySports MedicineSports/RecreationTrauma/Injury
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