Gecko tape is a glueless tape which is designed by

[keannu]

I don't think "which is" here is correct. It should be "which was" to mean a past action. What do you think?

5) Gecko tape is a glueless tape which is designed by Manchester University scientists. It was inspired by the gecko lizard's ability to climb walls and walk on ceilings. The gecko foot has tiny hairlike structures that help it [stick / to stick] to surfaces.

 

[SoothingDave]

I agree. Unless the designing is ongoing, but it does not sound like it from the context.

 

[emsr2d2]

I agree. Either "which was" or nothing. "Gecko tape is a glueless tape designed by scientists from Manchester University".