David Norris

Title: David Norris: Innovator in Additive Manufacturing of Silica Aerogel Objects

Introduction

David Norris is a prominent inventor based in Munich, Germany. He has made significant contributions to the field of additive manufacturing, particularly in the development of silica aerogel objects. His innovative work has led to the creation of a unique ink composition that enhances the manufacturing process of these lightweight materials.

Latest Patents

David Norris holds a patent for an "Additive manufacturing of silica aerogel objects." This patent describes an ink composition that consists of a gellable silica sol containing an admixture of 30 to 70 vol. % of a mesoporous silica powder in a base solvent. The mesoporous silica powder has a particle size range of 0.001 to 1 mm and a tap density of 30 to 200 kg/m3, comprising at least 10% by weight of silica aerogel powder. The composition exhibits a yield stress in the range of 30 to 3000 Pa and a viscosity of 5 to 150 Pa·s at a shear rate of 50 s-1. Additionally, it demonstrates shear thinning properties, defined as a reduction in viscosity by a factor between 10 and 103 for an increase in shear rate by a factor of 104 to 105. The method of additive manufacturing involves direct ink writing, where the ink composition is forced through a convergent nozzle to form a three-dimensional object.

Career Highlights

David Norris is associated with Empa Eidg. Materialprüfungs- und Forschungsanstalt, where he continues to push the boundaries of material science. His work focuses on the practical applications of silica aerogel, which is known for its exceptional insulating properties and lightweight characteristics.

Collaborations

Throughout his career, David has collaborated with notable colleagues, including Shanyu Zhao and Gilberto De Freitas Siqueira. These partnerships have fostered a collaborative environment that enhances innovation and research in the field of additive manufacturing.

Conclusion

David Norris is a key figure in the advancement of additive manufacturing technologies, particularly in the realm of silica aerogel objects. His innovative patent and ongoing work at Empa highlight his commitment to pushing the boundaries of material science.