Abstract: A three-dimensional auxetic structure, comprising a plurality of adjoining hollow cells, each hollow cell having cell walls and a transversal cross section of the plurality hollow cells following a two-dimensional auxetic pattern, each cell wall comprising folding lines parallel to a plane containing the auxetic pattern such that peaks and valleys are defined in the cell walls and the cell walls being foldable along the folding lines.

Abstract: A 3D printed drilling template (20, 30a, 30b, 30c) including: a rigid framework able to be manipulated by an operator or an automaton, and a set of traversing (22, 32a, 32b, 32c, 33c) orifices in the framework and arranged to guide the drilling of holes into a structure on which the drilling template is mounted, wherein the drilling template (20, 30a, 30b, 30c) is designed or revised on an ad-hoc basis and manufactured by 3D printing and using a 3D printing material based on a polymer material mixed with powdered graphene.

Abstract: A manufacturing process to form a positioning control tool, such as a gyroscope, by using a three-dimensional (3D) printer printing a polymer material mixed with powdered graphene (12a) components (410) on a piezoelectric substrate (205), the components (410) include: a resonator (411) transducer configured to create a first surface acoustic wave (215); a pair of reflectors (412a, 412b) configured to reflect the first surface acoustic wave (215); a structure (413) which, when subjected to a Coriolis force, creates a second surface acoustic wave (230); a first sensor transducer (414) configured to sense the second surface acoustic wave (230); and a second sensor transducer (415) configured to sense a residual surface acoustic wave from a second region of the surface (210) of the piezoelectric substrate free of the structures that respond to the Coriolis force.

Abstract: A 3D printed drilling template (20, 30a, 30b, 30c) including: a rigid framework able to be manipulated by an operator or an automaton, and a set of traversing (22, 32a, 32b, 32c, 33c) orifices in the framework and arranged to guide the drilling of holes into a structure on which the drilling template is mounted, wherein the drilling template (20, 30a, 30b, 30c) is designed or revised on an ad-hoc basis and manufactured by 3D printing and using a 3D printing material based on a polymer material mixed with powdered graphene.

Abstract: A three-dimensional auxetic structure, comprising a plurality of adjoining hollow cells, each hollow cell having cell walls and a transversal cross section of the plurality hollow cells following a two-dimensional auxetic pattern, each cell wall comprising folding lines parallel to a plane containing the auxetic pattern such that peaks and valleys are defined in the cell walls and the cell walls being foldable along the folding lines.