3Qs: The 3-​​D printing of tomorrow

Pro­fessor Ahmed Busnaina’s method of directed assembly is faster, cheaper, and more ver­sa­tile than tra­di­tional 3-​​D printing. What does it mean? Could $10 iPhones and tissue engi­neering break­throughs be just the tip of the ice­berg. Photo by Mary Knox Merrill.

Hiding in plain sight

Appli­ca­tions like invis­i­bility cloaking can’t be real­ized until the meta­ma­te­rials that enable them are oper­able at a range of fre­quen­cies. New research from asso­ciate pro­fessor Hos­sein Mos­al­laei could lead to this possibility.

The secrets of spider silk

Steve Cran­ford, an assis­tant pro­fessor of civil and envi­ron­mental engi­neering, studies spider silk and other nat­ural mate­rials for insight into designing more robust syn­thetic structures.