A versatile technique to transfer multi-walled carbon nanotubes membranes to surfaces

We present a simple and versatile technique to fabricate and transfer multi-walled carbon nanotube (MWCNT) membranes to virtually any substrate, including devices and a large variety of materials with different shapes. First, a mesoporous silica (Mobil Composite material MCM-41)/MWCNT composite is deposited by spin coating on SiO2. Immersion of the wafer in HF solution, releases a floating MWCNT membrane that strongly adheres to any surface that makes contact with it. The process does not require functionalization or surfactants, thus avoiding contamination and additional cleaning steps, and has potential to be extended to allow the fabrication and transfer of membranes of other carbon materials, including other CNT types, fullerenes and graphene.