Coulter J.P. – TechConnect Briefs

Investigation of a Hybrid Hot Runner System to Increase the Efficiency of Injection Molding and Improve the Quality of Molded Parts

Alqosaibi K., Coulter J.P., Duhduh A., Kundu A., Noor H., Thakur C., Lehigh University, US

Hot runner systems are prevalent in the manufacturing of thin walled polymers parts. There are great challenges in industries associated with the quality of the molded parts when utilizing a hot runner system. One of [...]

Apparent Tissue Modulus for Micro/Nano Pillar Arrays

Coulter J.P., Jedlicka S.S., Rajhi A.A., Lehigh univeristy, US

Polymeric culture platforms with micro/nano topographies have provided a powerful approach to modulate cell to substrate interactions. Cells respond to chemical and mechanical signals from surrounding microenvironments. While chemical signals have been well studied in [...]

The impact of the “4d-Rheoprinting” additive manufacturing technique on molecular orientation and thermal properties of polymeric parts

Coulter J.P., Duhduh A., Lehigh University, US

This paper discusses a novel additive manufacturing technique that was developed in order to 3D print polymeric parts with tunable properties. This technique, known as 4D-Rheoprinting, can be applied to a number of common additive [...]

Additive “4D” Rheoprinting for the Manufacture of Enhanced Biomaterial Products

Coulter J.P., Duhduh A., Jaafar I.H., Lehigh University, US

A novel additive manufacturing technique, which we have coined as the “4D Rheoprinter”, has been developed. This technique enables 3D printing of polymers with tunable material properties for optimized performance in wide range of applications. [...]

Numerical and Experimental Investigation in Replicating a Micro-Featured Surface with the Injection Molding Process

Coulter J.P., Jaafar I.H., Rajhi A., Lehigh University, US

This paper describes current efforts to numerically and experimentally investigate micro and nanoscale features replication using the injection molding process. A silicon (Si) insert with micro–features is fabricated via photolithography followed by deep reactive ion [...]