One of my favorite movies is Star Trek IV, The Voyage Home. Yes, I'm a huge fan of the original series, with Bill Shatner as Captain Kirk.
Remember the scene where Catherine Hicks was frantically searching for Kirk and Spock in the park and bumped into the invisible starship?
This scientific fantasy of cloaking has arrived.
They can't cloak anything as large as a truck yet, but they can cloak smaller objects using metamaterials. Metamaterials are mixtures of metal and circuit board materials such as ceramic, Teflon or fibre composite which can deflect radar, light or other waves around an object.
Read more of the simplified explanation here.
Besides the cloaking models, Milton is working on a different project, "something similar to a force shield in 'Star Trek,' " he said.
Get the more detailed scientific explanation here.