Polymers are ubiquitous with soft matter and have found diverse applications, from the natural rubber found in latex gloves to vulcanized rubber found in tires. Polymers encompass a large range of soft matter with applications in material science, an example of this is hydrogel. With the ability to undergo shear thinning, hydrogels are well suited for the development of 3D printing. Due to their stimuli responsive behavior, 3D printing of hydrogels have found applications in a diverse range of fields, such as soft robotics, tissue engineering, and flexible electronics. Polymers also encompass biological molecules such as proteins, where research insights from soft matter research have been applied to better understand topics like protein crystallization.