US 12,466,173 B2
Flexible proximity sensors incorporating nanocomposite materials, methods of producing the same, and methods of measuring sensitivity of the same
Mangilal Agarwal, Carmel, IN (US); and Hamid Dalir, Carmel, IN (US)
Assigned to The Trustees of Indiana University, Bloomington, IN (US)
Appl. No. 17/773,188
Filed by The Trustees of Indiana University, Bloomington, IN (US)
PCT Filed Oct. 28, 2020, PCT No. PCT/US2020/057617
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2021/086887, PCT Pub. Date May 6, 2021.
Claims priority of provisional application 62/927,181, filed on Oct. 29, 2019.
Prior Publication US 2022/0388297 A1, Dec. 8, 2022
Int. Cl. B32B 37/10 (2006.01); B32B 5/26 (2006.01); B32B 7/10 (2006.01); B32B 27/08 (2006.01); B32B 27/40 (2006.01); B32B 37/02 (2006.01); B32B 38/00 (2006.01)
CPC B32B 37/10 (2013.01) [B32B 5/26 (2013.01); B32B 7/10 (2013.01); B32B 27/08 (2013.01); B32B 27/40 (2013.01); B32B 37/02 (2013.01); B32B 38/0004 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2250/44 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2262/106 (2013.01); B32B 2305/72 (2013.01); B32B 2307/72 (2013.01); B32B 2307/732 (2013.01); B32B 2309/02 (2013.01); B32B 2309/12 (2013.01); B32B 2313/04 (2013.01); B32B 2457/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sensor comprising:
multiple layers of nanocomposite material, wherein each layer of nanocomposite material includes a thermoplastic polyurethane base and a plurality of carbon nanotubes embedded into the thermoplastic polyurethane base, wherein the multiple layers of nanocomposite material include a first layer of nanocomposite material having a first thickness and a second layer of nanocomposite material having a second thickness different from the first thickness, wherein the plurality of carbon nanotubes are present in the first layer of nanocomposite material in a first concentration by weight, and wherein the plurality of carbon nanotubes are present in the second layer of nanocomposite material in a second concentration by weight different from the first concentration by weight.