  A powerful and flexible method of 3D nano-printing, based on focusing charged
aerosol, has been developed. The self-consistent electric field configuration,
created with a holey floating mask and used as the scaffold for printing
structures, has no restriction as to sizes down to nano-scale. The electric
field line is used as a writing tool. Broad material independence opens the way
for producing hybrid structures that are essential for electronic devices. The
method contains three modes which are complementary: controlled tip-directed
3D-growth printing, the writing mode (that can also produce 3D structures in
repeating passages), and the stencil mode that produces wall-like structures of
various shapes. Manipulating them gives freedom to manufacture complex 3D
designs that we report. The desired morphology of the grown structures is
controlled according to a simple phenomenological theory that helps organize
the 2D stage motion and the 3D printing process to compete with the 3D printing
provided by laser techniques in polymer based material.
