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Graphene Takes the Strain in Stretchable Transistors

Graphene’s unique combination of electrical and physical properties marks it out as a potential candidate for transparent, stretchable , which could enable a new generation of sophisticated displays, wearable health monitors, or soft robotic devices. But, although is atomically thin, highly transparent, conductive, and more stretchable than conventional indium tin oxide electrodes, it still tends to crack at small strains.

Now researchers from Stanford University believe they have found a way to overcome this shortcoming and have created the most stretchable carbon-based transistors to date [Liu et al., Science Advances 3 (2017) e1700159].

“To enable excellent strain-dependent performance of transparent graphene conductors, we created graphene nanoscrolls in between stacked graphene layers,” explains first author of the study, Nan Liu

The team led by Zhenan Bao dub their combination of rolled up sheets of graphene sandwiched in between stacked graphene layers ‘multi-layer G/G scrolls’ or MGG. The scrolls, which are 1–20 microns long, 0.1–1 microns wide, and 10–100 nm high, form naturally during the wet transfer process as graphene is moved from one substrate to another.

The full story is available below.

Source: Materials Today