Green innovation, trade openness and spatial proximity. A study on Italian provinces.

Influence of process parameters on shape fidelity in extrusion-based bioprinting: a rheological perspective

Extrusion-based bioprinting enables the controlled deposition of hydrogels, which are crucial for cell viability in bioengineering. In this context, shape fidelity—defined as the correspondence between the printed construct and its digital model—emerges as a critical performance metric. This study systematically investigates the influence of inlet pressure, printing speed, and temperature on shape fidelity for two hydrogels: a natural alginate/cellulose blend and a synthetic PEG-based materia...

Rotating die extrusion of continuous fiber-reinforced polymer filaments

Continuous fiber-reinforced polymers (CFRPs) offer high strength-to-weight ratios, which makes them an attractive choice for applications in transportation, biomedical devices, and sports equipment. Additive manufacturing presents new opportunities for producing CFRPs with improved geometric freedom and digital fabrication flexibility. However, achieving adequate fiber impregnation and strong interfacial bonding remains a major challenge. This paper presents a novel rotating impregnation die,...

Bioinks for extrusion-based bioprinting: A systematic review of rheology, applications and future directions

Bio-additive manufacturing is a technology that allows scaffold creation for bioengineering applications. Among various techniques, extrusion-based bioprinting (EBB) results as the main process in this field due to a huge versatility as revealed by the possibility to use numerous materials from natural, synthetic or both sources. EBB is first explained reporting strengths and weaknesses through the definition of crucial concepts, such as shape fidelity. Then, a systematic literature review is...