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Paper-based Electronics and MEMS


A Harvard MRSEC team led by George Whitesides and Jennifer Lewis demonstrated a new method for high-resolution printing of conductive patterns on paper relevant for both printed electronics and MEMS applications. The wetting behavior of the paper substrates is modified using a fast vapor-phase treatment with organosilanes.  A reactive silver ink is then patterned onto the modified paper via inkjet printing to create high resolution, defect-free electrodes (top). Using this approach, their team produced an electro-adhesive device by printing interdigitated electrodes over a large-area paper substrate.  Upon applying an electric potential difference (2 kV), the paper-based device strongly adhered to a glass surface and is capable of supporting a 500-g weight (bottom).