The Wake Shield...
... was deployed in the wake of the Space Shuttle at an orbital altitude of over 300 kilometers (186 mi), within the thermosphere, where the atmosphere is exceedingly tenuous. The forward edge of the WSF disk redirected atmospheric and other particles around the sides, leaving an "ultra-vacuum" in its wake. The resulting vacuum was used to study epitaxial film growth.
The WSF has flown into space three times, on board shuttle flights STS-60, STS-69 and STS-80. During STS-60, some hardware issues were experienced, and, as a result, the WSF was only deployed at the end of the shuttle's robotic arm. During the later missions, the WSF was deployed as a free-flying platform in the wake of the shuttle.
These flights proved the vacuum wake concept, and realized the space epitaxy concept by growing the first-ever crystalline semiconductor thin films in the vacuum of space. These included gallium arsenide (GaAs) and aluminum gallium arsenide (AlGaAs) depositions. These experiments have been used to develop better photocells and thin films. Among the potential resulting applications are artificial retinas made from tiny ceramic detectors.
Did the Wake Shield end up on display anywhere?