>>8907323
…furthermore interesting the the experiment to discover this was found using a "q-plate"
"Banzer’s team scattered two polarised green laser beams off a gold bead [a liquid crystal device called a q-plate] that was smaller than the wavelength of the light. The resulting inference introduced a polarisation pattern with either three or five twists, giving it a Möbius-like structure."
https://www.pbs.org/wgbh/nova/article/mobius-strip-made-light/
Also interesting that this science involved a former US Energy secretary Steven Chu developing optical tweezers and something called "radiation pressure" that has the power to manipulate viruses.
"If you were the size of an atom, you might justifiably complain about the sun beating down on you. The photons that make up sunlight may have no mass, but they still carry momentum – and so exert a force on everything they touch.
It is not, admittedly, a very big force. At sea level on Earth, sunlight’s “radiation pressure” is about 50 million times smaller than atmospheric pressure. Applied to tiny objects or over a large area, however, it becomes something to be reckoned with.
Take optical tweezers, a pioneering device developed in 1986 by a team at Bell Labs in Holmdel, New Jersey, that included the 1997 Nobel laureate and now US energy secretary Steven Chu. It uses the pressure of a highly focused laser beam to levitate and manipulate delicate microscopic objects such as viruses, bacteria and DNA strands without causing them damage.
The new field of optomechanics pushes things even further."
https://www.newscientist.com/article/mg21228432-000-light-tricks-from-optical-tweezers-to-solar-sails/