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Ultra-Thin, Flexible Integrated Circuit & Sensor System

An international research team led by Professor Takao Someya of the University of Tokyo has manufactured extremely thin (2 μm) and light (3 g/m2) soft organic transistor integrated circuits (ICs) on ultra-thin polymeric films. The research team developed a novel technique to form a high-quality 19-nm-thick insulating layer on the rough surface of the 1.2-μm-thick polymeric film. The electrical properties and mechanical performance of the flexible ICs were practically unchanged (no degradation was seen) even when squeezed to a bending radius of 5 μm, dipped in physiological saline, or stretched to up to twice their original size. A major application of this flexible IC and touch sensor system is medical monitoring. "This can be attached to all sorts of surfaces and does not limit the movement of the person wearing it," says Someya.

Topics:
Electronics & Computers Implants & Prosthetics Manufacturing & Prototyping Materials Medical Patient Monitoring Plastics Semiconductors & ICs Sensors

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    Transcript

    00:00:05 researchers from Asia and Europe have developed the world's lightest and thinnest organic circuits which in the future could be used in a range of healthcare applications lighter than a feather these ultra thin film-like organic transistor integrated circuits are being developed by a research group led by Professor taka somia and associate

    00:00:26 professor siosi sekitani of the University of Tokyo who run an exploratory research for advanced technology program sponsored by the Japan Science and Technology agency in collaboration with Sig freed Bowers group at the johanes Kepler University Lin Austria the circuits are extremely lightweight flexible durable and thin

    00:00:49 and conform to any surface they are 2 microns thick just 1/ out of kitchen wrap and weighing only 3 G per square meter are 30 times lighter than office paper they also Feature A bend radius of five microns meaning they can be scrunched up into a bowl without breaking due to these properties the researchers have dubbed them imperceptible Electronics which can be

    00:01:15 placed on any surface and even worn without restricting the user's movement the integrated circuits are manufactured on rolls of one micron thick plastic film making them easily scalable and cheap to produce and if the circuit is placed on a rubber surface it becomes stretchable able to withstand up to 233% tensile strain while retaining full functionality this is a very

    00:01:41 convenient way of making electronic stretchable because you can fabricate high performance devices in a flood State and then just transfer them over to a stretchable substrate and create something that is very compliant and very stretchable just by simple pick and place process this prototype device is a touch sensor featuring a 12x12 array of

    00:02:02 sensors on a 4.8 cmx 4.8 CM circuit it is made up of two layers an integrated circuit layer and a tactile sensor layer with the development of these plastic Electronics the possibility for flexible thin large area Electronics has been realized in the future the group would like to expand the capabilities of these

    00:02:29 circuits the new flexible touch sensor is the world thinnest lightest and people cannot feel the existence of this device I believe this development will open up a wide range of new application from Health monitoring system wellable medical instruments and even robotic skins in the future the results of This research were published in the July 25th

    00:02:59 20 13 issue of the journal Nature