Title: Stretchable conductive composites for use in soft devices

Abstract

An elastically-deformable, conductive composite using elastomers and conductive fibers and simple fabrication procedures is provided. Conductive elastomeric composites offer low resistance to electrical current and are elastic over large (>25%) extensional strains. They can be easily interfaced/built into structures fabricated from elastomeric polymers.

Inventors:

Lessing, Joshua Aaron; Morin, Stephen A.; Whitesides, George M.

Issue Date:

2019-09-17

Research Org.:

Harvard Univ., Cambridge, MA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1576314

Patent Number(s):

10418145

Application Number:

14/732,302

Assignee:

President and Fellows of Harvard College (Cambridge, MA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C39/18 - incorporating preformed parts or layers, e.g. casting around inserts or for coating articles {

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

B29K2305/00 - Use of metals, their alloys or their compounds, as reinforcement
B29K2305/12 - Iron
B29K2307/04 - Carbon

G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L1/20 - by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids
G01L1/2287 - {constructional details of the strain gauges

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES

H01B1/22 - the conductive material comprising metals or alloys
H01B1/24 - the conductive material comprising carbon-silicon compounds, carbon or silicon

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

H01F7/02 - Permanent magnets {[PM]}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01H - ELECTRIC SWITCHES

H01H1/021 - Composite materials
H01H36/00 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding {

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01R - ELECTRICALLY-CONDUCTIVE CONNECTIONS

H01R13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
H01R43/007 - {for elastomeric connecting elements}

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05K - PRINTED CIRCUITS

H05K1/0283 - {Stretchable printed circuits}
H05K1/0287 - {having an universal lay-out, e.g. pad or land grid patterns or mesh patterns}
H05K2201/0133 - Elastomeric or compliant polymer
H05K2201/0281 - Conductive fibers
H05K2201/0314 - Elastomeric connector or conductor, e.g. rubber with metallic filler
H05K2201/0323 - Carbon

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DOE Contract Number:  

DMR-0820484; FG02-00ER45852

Resource Type:

Patent

Resource Relation:

Patent File Date: 2015 Jun 05

Country of Publication:

United States

Language:

English