# US 10,481,022 B2 · Core-shell nanofiber textiles for strain sensing, and methods of their manufacture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,022 B2 - Document ID: US10481022B2 - Status: Granted - Kind: B2 - Application number: 15/350,922 - Filed: 2016-11-14 - Published: 2017-03-02 - Granted: 2019-11-19 - Earliest claimed: 2013-04-03 - Assignees: Texavie Technologies Inc. - Applicants: Texavie Technologies Inc. - Inventors: Peyman Servati; Frank K. Ko; Saeid Soltanian; Amir Servati - Web page: https://patentgrep.com/patent/US10481022B2 ## CPC - G01L 1/205: {using distributed sensing elements} - A61B 5/021: Measuring pressure in heart or blood vessels - A61B 5/08: Measuring devices for evaluating the respiratory organs - A61B 5/11: Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb {(A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721)} - A61B 5/1114: {Tracking parts of the body} - A61B 5/6804: {Garments; Clothes} - B82Y 10/00: Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic - G01L 1/2287: {constructional details of the strain gauges (adjustable resistors H01C10/00)} - A61B 5/024: Measuring pulse rate or heart rate - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES ## Abstract This invention pertains to a low cost, low noise strain sensor based on a web of continuous core-shell nanofibers with conductive shell and mechanically robust core that can be attached or embedded on a variety objects for directional monitoring of static or dynamic changes in mechanical deformation and pressure. This is a low cost, highly sensitive strain sensor, with low noise and ease of integration for different applications from synthetic tactile skins, to vibrational and health monitoring. ## Claims ### Claim 1 A resistive sensor assembly comprising: a plurality of resistive sensor devices, each comprising: a fiber mesh comprising a plurality of elongate fibers, wherein each fiber of the plurality of fibers comprises an electrical conductor comprising an electrically conductive exterior surface reversibly positionable into and out of contact with the electrically conductive exterior surfaces of adjacent fibers of the plurality of fibers; a first electrical contact electrically coupled to the electrical conductor of at least one of the plurality of fibers; and a second electrical contact electrically coupled to the electrical conductor of at least one of the plurality of fibers and spaced apart from first electrical contact, whereby the first and second electrical contacts are positioned to apply an electrical voltage or current across at least a portion of the fiber mesh; and at least one resiliently deformable encapsulating film encapsulating the plurality of resistive sensor devices; wherein the first and second electrical contacts of a first subset of the plurality of resistive sensor devices are positioned to apply the electrical voltage or current in a first direction; and wherein the first and second electrical contacts of a second subset of the plurality of resistive sensor devices are positioned to apply the electrical voltage or current in a second direction different from the first direction. ### Claim 2 (depends on 1) The assembly of claim 1 wherein the plurality of resistive sensor devices are positioned in the at least one resiliently deformable encapsulating film in at least one intersecting pair comprising one of the first subset of the plurality of resistive sensor devices and one of the second subset of the plurality of resistive sensor devices. ### Claim 3 (depends on 1) The assembly of claim 1 wherein the first direction is generally perpendicular to the second direction. ### Claim 4 (depends on 1) The assembly of claim 1 wherein: the at least one resiliently deformable encapsulating film comprises first, second, and third resiliently deformable encapsulating films; the first subset of the plurality of resistive sensor devices are positioned between the first and second resiliently deformable encapsulating films; and the second subset of the plurality of resistive sensor devices are positioned between the second and third resiliently deformable encapsulating films. ### Claim 5 (depends on 1) The assembly of claim 1 further comprising a monitoring and readout system configured to identify changes in resistance between the first and second electrical contacts of at least some of the plurality of resistive sensor devices. ### Claim 6 (depends on 5) The assembly of claim 5 wherein the monitoring and readout system is programmed to identify a deformation of the at least one resiliently deformable encapsulating film by analysis of the changes in resistance between the first and second electrical contacts of the at least some of the plurality of resistive sensor devices. ### Claim 7 (depends on 6) The assembly of claim 6 wherein the monitoring and readout system is programmed to identify a location, magnitude, or direction of the deformation. ### Claim 8 (depends on 1) The assembly of claim 1 wherein the at least one resiliently deformable encapsulating film is attached to or embedded in a human-media device or a phone to detect touch on the human-media device or phone. ### Claim 9 (depends on 1) The assembly of claim 1 wherein the at least one resiliently deformable encapsulating film is attached to or embedded in a rigid object. ### Claim 10 (depends on 9) The assembly of claim 9 wherein the object is infrastructure. ### Claim 11 (depends on 1) The assembly of claim 1 wherein the at least one resiliently deformable encapsulating film is attached to or embedded in a flexible or stretchable object. ### Claim 12 (depends on 11) The assembly of claim 11 wherein the object is clothing, a cuff positionable on a limb of a patient, or an adhesive body configured to be adhered to another object. ### Claim 13 (depends on 1) A method of monitoring deformation in the at least one resiliently deformable encapsulating film of claim 1, the method comprising: causing a monitoring and readout system to identify changes in resistance between the first and second electrical contacts of at least some of the plurality of resistive sensor devices; and causing the monitoring and readout system to identify a deformation of the at least one resiliently deformable encapsulating film in response to the changes in resistance between the first and second electrical contacts of the at least some of the plurality of resistive sensor devices. ### Claim 14 (depends on 13) The method of claim 13 wherein causing the monitoring and readout system to identify the deformation comprises causing the monitoring and readout system to identify a location, magnitude, or direction of the deformation. ### Claim 15 (depends on 13) The assembly of claim 13 wherein causing the monitoring and readout system to identify the deformation comprises causing the monitoring and readout system to identify the deformation in response to touch on a human-media device or a phone. ### Claim 16 (depends on 13) The method of claim 13 wherein the at least one resiliently deformable encapsulating film is attached to or embedded in a rigid object. ### Claim 17 (depends on 16) The method of claim 16 wherein the object is infrastructure. ### Claim 18 (depends on 13) The method of claim 13 wherein the at least one resiliently deformable encapsulating film is attached to or embedded in a flexible or stretchable object. ### Claim 19 (depends on 18) The method of claim 18 wherein the object is clothing, a cuff positionable on a limb of a patient, or an adhesive body configured to be adhered to another object. ### Claim 20 (depends on 13) The method of claim 13 wherein the at least one resiliently deformable encapsulating film is positioned on a human or animal body part. ### Claim 21 (depends on 20) The method of claim 20 wherein causing the monitoring and readout system to identify the changes in resistance comprises causing the monitoring and readout system to identify, on the human or animal body part, posture, motion of a joint, muscle movements, heartbeat, breathing, body movement, blood pressure, tissue contractions, tremors, or seizures.