Method for fabricating micro- or nanowire at predetermined position of object using micro- or nanopipette

A method of fabricating a wire at predetermined positions on an object, the wire having a nanometer-sized or a micrometer-sized diameter, the method comprising:

• preparing a pipette having a tip with an inner diameter (dpt), wherein the inner diameter of the tip is a nanometer-sized inner diameter or a micrometer-sized inner diameter;
• filling the pipette with a solution containing a wire-forming material;
• bringing the solution into contact with an object;
• and
• pulling the pipette apart from the object at a pulling speed lower than or equal to a predetermined critical pulling speed (vc) to fabricate a wire having a nanometer-sized diameter or a micrometer-sized diameter,
• wherein the critical pulling speed (vc) is defined by a maximum limit of the pulling speed at which the wire to be fabricated has a same diameter as the inner diameter (dpt) of the tip of the pipette, and therefore when the pulling speed is lower than the critical pulling speed, the wire has substantially a same diameter as the inner diameter (dpt) of the tip of the pipette, and when the pulling speed is higher than the critical pulling speed, the wire has a diameter different from the inner diameter (dpt) of the tip of the pipette, and
• wherein the critical pulling speed (vc) is determined in inverse proportion to n/2 square of a molecular weight (M) of the wire-forming material, where n is a value determined experimentally according to a type of molecule of the wire-forming material.

A method of fabricating a wire at predetermined positions on an object, the wire having a nanometer-sized or a micrometer-sized diameter, the method comprising:

• preparing a pipette having a tip with an inner diameter (dpt), wherein the inner diameter of the tip is a nanometer-sized inner diameter or a micrometer-sized inner diameter;
• filling the pipette with a solution containing a wire-forming material;
• bringing the solution into contact with an object;
• and
• pulling the pipette apart from the object at a pulling speed lower than or equal to a predetermined critical pulling speed (vc) to fabricate a wire having a nanometer-sized diameter or a micrometer-sized diameter,
• wherein the critical pulling speed (vc) is defined by a maximum limit of the pulling speed at which the wire to be fabricated has a same diameter as the inner diameter (dpt) of the tip of the pipette, and therefore when the pulling speed is lower than the critical pulling speed, the wire has substantially a same diameter as the inner diameter (dpt) of the tip of the pipette, and when the pulling speed is higher than the critical pulling speed, the wire has a diameter different from the inner diameter (dpt) of the tip of the pipette, and
• wherein, when the pulling speed is higher than the critical pulling speed, the wire has a diameter smaller than the inner diameter (dpt) of the tip of the pipette.