printing flexible circuits - teachengineering
TRANSCRIPT
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Printing Flexible Circuits
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Carbon (graphene)paint
Stencils
Brushes
what you did
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Electronic Printing in
Industry
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Research is marrying 600 year old Gravure printing
• Newspaper• U.S. Bureau of engraving and
Printing
Karel Václav KlíčInvented photogravure
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to 21 Century conductive nano-inks, nano-lithography and nano-imprints to make flexible circuits using roll-to-roll manufacturing.
A nanometer is a billionth of a meter!
Scanning electron micro-scope image of silver nano-particles in a conductive ink
Printing tiny features on a big scale!
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Electroluminescent panels
Batteries
Lighting (organic LEDs) Solar Cell
Arizona State University
Smart packaging
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Diabetes socks monitor temperature, an indicator of inflammation
Hospitals monitor baby’s pulse oximetry
Heart rate data, sleep and fitness, body temperature, air quality, UV rays
Haptic vibrations pulse at knees, ankles hips to move or hold positions
Heated jackets 2018 Olympics;Flag: carbon and silver paint inside,Temperature set with cell phone.
Ralph Lauren
Wearables
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3D printed stretchy, flexible monitor that wraps around the heart John Rogers’ Group at Northwestern
Energy harvester from heart to replace batteries in pacemaker
Medical Devices
Tattoo that analyses sweat
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Touchpad for your computer Display responsive to body temperature
Communication
Gold leaf tattoos
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Foresight: printed tactile, conductive, interactive maps for blind people
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Detour’s (Thomas Evans) interactive sound paintings use Bareconductivepaint
Other uses
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Put your circuit together
• Open the card
• Check the paint is dry
• Carefully take off stencils
• Place the battery with the POSITIVE SIDE DOWN on the RIGHT battery pad
• Tape it down, but LEAVE as much of the battery exposed as possible
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Put your circuit together
• Check the paint is dry
• Carefully take off stencils
• Hold the LED horizontally, with the LONG wire on top
• Stick the wires ONLY (not the bulb) through the hole to the inside of the card
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Put your circuit together
• Bend the SHORT wire DOWN flat• Cut a piece of tape the length of the
short wire and cover the wire• Leave as much of the rest of the paint
line exposed as possible.
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Put your circuit together
• Cut a piece of tape the length of the long wire.
• Place the piece of tape STICKY SIDE UP on top of the SHORT wire
• Bend the LONG wire DOWN on top of the short wire.
• Carefully close the card