Scientists have managed to build silicon circuits that can be bent, twisted
and even stretched, according to a
paper
published in Science magazine.
The chips use silicon which is folded like a concertina and surrounded by
rubbery material that allows the entire device to flex.
The end result could be built into clothes, small monitoring devices and even
implanted into human bodies.
"We have developed a simple approach to high performance, stretchable and
foldable integrated circuits," said the team from the University of Illinois.
"The systems integrate inorganic electronic materials, including aligned
arrays of nano-ribbons of single crystalline silicon, with ultra-thin plastic
and 'elastomeric' substrates."
The designs combine multilayer neutral mechanical plane layouts and "wavy"
structural configurations in silicon complementary logic gates, ring oscillators
and differential amplifiers.
Although silicon is a highly brittle substance the folds in the design, and
the flexible substrate, make it easy to bend the chip to fit around uneven
surfaces like medical probes or bone structures.
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