MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202641085322 A) filed by Dr. Poornaiah Billa on July 12, 2026, for A Flexible Screen-Printed Single-Walled Carbon Nanotube Piezoresistive Strain Sensor And A Method For Fabricating And Calibrating The Same.
Inventor includes Dr. Poornaiah Billa.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: The present invention provides a flexible piezoresistive strain sensor comprising a flexible polymer substrate, a screen-printed sensing layer containing a percolating network of single-walled carbon nanotubes, and opposed conductive contact pads electrically connected to the sensing layer. Tensile deformation of the substrate alters inter-nanotube spacing, tunnelling resistance and conductive pathways, thereby producing a reproducible resistance change corresponding to applied strain. The sensor geometry, film thickness and electrode arrangement provide effective strain transfer, stable adhesion and measurable response over a wide deformation range. A fabrication method includes preparing a printable nanotube dispersion, screen printing the sensing layer on the polymer substrate, drying or curing the layer, forming conductive contact pads and electrically calibrating the sensor. A coupled mechanical-electrical model may be used to determine displacement, stress, electrical-potential distribution, normalised resistance and gauge factor. The sensor is suitable for wearable electronics, soft robotics, biomedical motion monitoring and structural-health monitoring. Accompanied Drawing [FIGS. 1- 9]
Disclaimer: Curated by HT Syndication.
