Researchers have developed an ultrathin pressure sensor that can be attached directly to the skin to measure how fingers interact with objects to produce useful data for medical and technological applications. The sensor has minimal effect on the users’ sensitivity and ability to grip objects and it is resistant to disruption from rubbing.
There are many reasons why researchers wish to record motion and other physical details associated with hands and fingers. The hands are the primary tools for directly interacting with and manipulating materials and environments. By recording the way in which hands perform various tasks, it could help researchers in fields such as sports and medical science as well as neuroengineering.
Fingertips are extremely sensitive — so much so that a superthin plastic foil just a few millionths of a meter thick is enough to affect somebody’s sensations. A wearable sensor for the fingers has to be extremely thin, which also makes it very fragile and susceptible to damage from rubbing or repeated physical actions. In order to overcome this, the team created a special functional material that is thin and porous called a nanomesh sensor.
Two kinds of layers were made for the sensors. Both layers were made by a process called electrospinning, which resembles a spider spinning its web. One is an insulating polyurethane mesh with fibers about 200 nanometers to 400 nanometers thick. The second layer is a stencil-like network of lines that forms the functional electronic component of the sensor. This is made from gold and uses a supporting frame of polyvinyl alcohol, often found in contact lenses, which after manufacture, is washed away to leave only the gold traces it was supporting. Multiple layers combine to form a functional pressure and movement sensor.
The sensor maintained its performance as a pressure sensor even after being rubbed against a surface with a force of 100 kilopascals (roughly equivalent to atmospheric pressure) 300 times without breaking.
For more information, contact Professor Takao Someya at This email address is being protected from spambots. You need JavaScript enabled to view it. ;+81-3-5841-0411.
Focusing the Sun – A Big Gain for Solar Power Efficiency
What Do You Know About 5G Technology?
Coming Soon - Modeling Inverse Kinematics: Improving Actuation Control in...
NASA Goddard Space Communications Workshop Preview
Advancing Battery Technology: The 2022 Battery Show Preview
An Alternative to Lithium-Ion Batteries
Improve Speed and Accuracy of Electronic Component Inspection with Automated Video Inspection
Medical Device Biofilms: Slimy, Sticky, Stubborn, and Serious
Building the AI/ML Data Autobahn for ADAS/AV Development
Engineering Construction Vehicles for Battery-Electric Solutions
Streamline Your Functional Safety Systems to Save Time, Improve Performance, and Enhance Safety
In-Motion, Automatic Paint Defect Repair
Diagnosing Wrist Problems in Motion with MRI
High-Speed Transport of Fluid Drops and Solid Particles via Surface Acoustic...
A Guide to Collaborative Robot Safety
Focusing the Sun – A Big Gain for Solar Power Efficiency
Purdue’s Micro-Robot Could Help Treat Stroke Patients
3 Challenges with Hydrogen Powered Engine Adoption
By submitting your personal information, you agree that SAE Media Group and carefully selected industry sponsors of this content may contact you and that you have read and agree to the Privacy Policy.
You may reach us at privacy@saemediagroup.com.
You may unsubscribe at any time.
© 2009-2022 Tech Briefs Media Group