Method for additive manufacturing and an additive manufacturing apparatus

A method of additive manufacturing, the method comprising:

• disposing a nozzle of a print head of an additive manufacturing system over a first location on a substrate;
• dispensing an ink composition from the nozzle onto the first location of the substrate while moving the nozzle away from the substrate to increase a first distance therebetween, thereby forming a first portion of a structure on the first location wherein the ink composition comprises a viscosity in a range of 100,000 cP to 10,000,000 cP as measured at 25 degrees Celsius with a rheometer with a 25 mm parallel plate spindle and a shear rate in a range of 0.1 s-1 to 100 s-1;
• and
• repeatedly, as necessary to increase a second distance the first portion of the structure protrudes from the substrate, performing the following over the first location:
• moving the nozzle away from the substrate while intentionally not depositing the ink composition to increase the first distance, thereby elongating the structure and increasing the second distance and an aspect ratio of the structure,
• after moving the nozzle away from the substrate, performing the following over the first location:
• moving the nozzle towards the substrate to decrease the first distance, and
• dispensing the ink composition from the nozzle onto the structure while moving the nozzle away from the substrate to increase the first distance therebetween.