SELF-SIMILAR AND FRACTAL DESIGN FOR STRETCHABLE ELECTRONICS
First Claim
1. A electronic circuit comprising:
- an elastic substrate; and
a stretchable metallic or semiconducting device component supported by said elastic substrate;
said stretchable metallic or semiconducting device component comprising a plurality of electrically conductive elements each having a primary unit cell shape, said electrically conductive elements connected in a sequence having a secondary shape providing an overall two-dimensional spatial geometry characterized by a plurality of spatial frequencies;
wherein said two-dimensional spatial geometry of said metallic or semiconducting device component allows for accommodation of elastic strain along one or more in-plane or out of plane dimensions, thereby providing stretchability of said electronic circuit.
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Accused Products
Abstract
The present invention provides electronic circuits, devices and device components including one or more stretchable components, such as stretchable electrical interconnects, electrodes and/or semiconductor components. Stretchability of some of the present systems is achieved via a materials level integration of stretchable metallic or semiconducting structures with soft, elastomeric materials in a configuration allowing for elastic deformations to occur in a repeatable and well-defined way. The stretchable device geometries and hard-soft materials integration approaches of the invention provide a combination of advance electronic function and compliant mechanics supporting a broad range of device applications including sensing, actuation, power storage and communications.
103 Citations
67 Claims
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1. A electronic circuit comprising:
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an elastic substrate; and a stretchable metallic or semiconducting device component supported by said elastic substrate;
said stretchable metallic or semiconducting device component comprising a plurality of electrically conductive elements each having a primary unit cell shape, said electrically conductive elements connected in a sequence having a secondary shape providing an overall two-dimensional spatial geometry characterized by a plurality of spatial frequencies;wherein said two-dimensional spatial geometry of said metallic or semiconducting device component allows for accommodation of elastic strain along one or more in-plane or out of plane dimensions, thereby providing stretchability of said electronic circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. An electronic sensor compatible with magnetic resonance imaging comprising:
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an elastic substrate; and a stretchable electrode array supported by said elastic substrate;
said electrode array comprising a plurality of electrically conductive elements each having a primary unit cell shape, said electrically conductive elements connected in a sequence having a secondary shape providing an overall two-dimensional spatial geometry characterized by a plurality of spatial frequencies;wherein said stretchable electrode array is substantially transparent to radio frequency electromagnetic radiation having frequencies selected from the range of 1 MHz to 100 GHz, and wherein said two-dimensional spatial geometry of said stretchable electrode array allows for accommodation of elastic strain along one or more in-plane or out of plane dimensions, thereby providing stretchability of said electronic sensor. - View Dependent Claims (63, 64, 65)
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66. An electrode array comprising:
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a plurality of stretchable metallic or semiconducting device components supported by said elastic substrate, wherein each of said stretchable metallic or semiconducting device components independently comprises a plurality of electrically conductive elements each having a primary unit cell shape, wherein said electrically conductive elements of each stretchable metallic or semiconducting device component are independently connected in a sequence having a secondary shape providing an overall two-dimensional spatial geometry characterized by a plurality of spatial frequencies; wherein said plurality of stretchable metallic or semiconducting device components provide a fill factor greater than or equal to 50% for an active area of said electrode array; and
wherein said two-dimensional spatial geometries of said metallic or semiconducting device components allows for accommodation of elastic strain along one or more in-plane or out of plane dimensions, thereby providing stretchability of said electrode array.
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67. A stretchable electronic device comprising:
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a plurality of rigid island structures supported by an elastic substrate;
wherein each of said rigid island structures independently comprises an inorganic semiconductor device or device component;a plurality of stretchable metallic or semiconducting device components electrically interconnecting at least a portion of said rigid island structures, wherein each of said stretchable metallic or semiconducting device components independently comprises a plurality of electrically conductive elements each having a primary unit cell shape, wherein said electrically conductive elements of each stretchable metallic or semiconducting device component are independently connected in a sequence having a secondary shape providing an overall two-dimensional spatial geometry characterized by a plurality of spatial frequencies; wherein said two-dimensional spatial geometries of said metallic or semiconducting device components allows for accommodation of elastic strain along one or more in-plane or out of plane dimensions, thereby providing stretchability of said stretchable electronic device.
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Specification