We describe the design, fabrication, and measurement of a 2D broadband gradient index acoustic lens in air. The index of refraction is tuned by controlling the dimensions of acoustic metamaterial unit cell inclusions designed through numerical simulations. The lens was fabricated in plastic through rapid prototyping stereolithography, and measurements of the sound field show good agreement with...

Maxillary reconstruction is a common procedure in maxillofacial surgery; for this purpose is used autogenous bone, alloplastic bone or another one with different results. In all of them, traditionally the use of computed tomography is used to make the surgical plan, however, 3D models are not used frequently. This report show a new application of the stereolithography to anticipate the surgical...

This paper describes a novel microvalve design that can be fabricated using stereolithography without need for the manual alignment and bonding steps required of PDMS microvalves. Multiple units of these microvalves can be arranged together and operated in tandem to perform fluid routing, switching, and pumping tasks. We demonstrate the performance of a four-valve fluid switch connected to a do...