Back to results
US 9,538,924 B1Granted
Composition and method of making a strain sensor and its use
AssigneeKing Abdulaziz University
InventorsAbdullah Mohamed Asiri, Sher Bahadar Khan, Muhammad Tariq Saeed Chani, Khasan S Karimov
Life of this patent
Estimating the term…
Abstract
A strain sensor fabrication and its use as flexible elastic heart strain sensors in form of a Wheatstone bridge are described. All arms of the bridge are nanocomposite based strain sensors. The silver selenide nanocomposite is especially developed by simple rubbing in method where the nanomaterials such as carbon nanotubes (CNTs) and Ag2Se nanoparticles are embedded into a porous rubber. This is a low cost easy to make strain sensor that has excellent resistance to humidity and temperature.
Claims5
A Wheatstone bridge for a heart rate meter, comprising:
- a multiwall carbon nanotube powder having a diameter between 10-30 nm;
- a spherical silver selenide nanoparticle of a specific size at 50% wt is added to 50% wt of the multiwall carbon nanotube powder to form a nanocomposite;
- and
- a porous rubber having a specific length, width and thickness mixed with the nanocomposite to make a porous rubber-CNT-silver selenide strain sensor having a specific length, width and thickness for measuring a heart rate.
1 more element
Dependencies are inferred from the claim text.