In molecular physics, there is a principle called Van der Waals Forces, which are the tiny attractive forces between atoms and molecules. This is what allows geckos to stick to and climb almost anything. – WTF Fun Facts
Source: https://www.thoughtco.com/definition-of-van-der-waals-forces-604681
WTF Fun Fact – The Force
You talk about van der Waals forces, but you show Hydrogen bonds on the image, which are not VDW.