  Interactive clothing requires sensing and display functionalities to be
embedded on textiles. Despite the significant progress of electronic textiles,
the integration of optoelectronic materials on fabrics still remains as an
outstanding challenge. Here, using the electro-optical tunability of graphene,
we report adaptive optical textiles with electrically controlled reflectivity
and emissivity covering the infrared and near-infrared wavelengths. We achieve
electro-optical modulation by reversible intercalation of ions into graphene
layers laminated on fabrics. We demonstrate a new class of infrared textile
devices including display, yarn and stretchable devices using natural and
synthetic textiles. To show the promise of our approach, we fabricated an
active device directly onto a t-shirt which enables long-wavelength infrared
communication via modulation of the thermal radiation from the human body. The
results presented here, provide complementary technologies which could leverage
the ubiquitous use of functional textiles.
