Human eye-inspired soft optoelectronic device using high-density MoS-graphene curved image sensor array.

Soft bioelectronic devices provide new opportunities for next-generation implantable devices owing to their soft mechanical nature that leads to minimal tissue damages and immune responses. However, a soft form of the implantable optoelectronic device for optical sensing and retinal stimulation has not been developed yet because of the bulkiness and rigidity of conventional imaging modules and their composing materials. Here, we describe a high-density and hemispherically curved image sensor array that leverages the atomically thin MoS-graphene heterostructure and strain-releasing device designs.

Colloidal Synthesis of Uniform-Sized Molybdenum Disulfide Nanosheets for Wafer-Scale Flexible Nonvolatile Memory.

Large-scale colloidal synthesis and integration of uniform-sized molybdenum disulfide (MoS ) nanosheets for a flexible resistive random access memory (RRAM) array are presented. RRAM using MoS nanosheets shows a ≈10 000 times higher on/off ratio than that based on exfoliated MoS . The good uniformity of the MoS nanosheets allows wafer-scale system integration of the RRAM array with pressure sensors and quantum-dot light-emitting diodes.