Thin flat metalenses focused with liquid crystals have been created by a group of researchers led by Case Western Reserve University physics professor Giuseppe Strangi.
(Metalens with liquid crystal à la Dune)
a group led by scientist Federico Capasso at Harvard University has begun to transform the field of optics by engineering flat optics metasurfaces, employing an array of millions of tiny microscopically thin and transparent quartz pillars to diffract and mold the flow of light in much the same way as a glass lens, but without the aberrations that naturally limit the glass...
Case Western Reserve University physics professor Giuseppe Strangi and collaborators at Harvard have taken a step toward making these "metalenses" even more useful—by making them reconfigurable...
They did this by harnessing nanoscale forces to infiltrate liquid crystals between those microscopic pillars, allowing them to shape and diffract the light in completely new ways—"tuning" the focusing power, Strangi said.
Liquid crystals are especially useful because can be manipulated thermally, electrically, magnetically or optically, which creates the potential for the flexible or reconfigurable lenses.
"We believe that this holds the promise to revolutionize optics as we know it since the 16th century," said Strangi.
Fans of Frank Herbert's 1965 novel Dune will recall the field glasses with oil lenses:
Oil lens: hufhuf oil held in static tension by an enclosing force field within a viewing tube as part of a magnifying or other light-manipulation system.
(Read more about Herbert's oil lens)
If the Kwisatz Haderach uses them, they've got to be good.
For preceding efforts in this area, focus on these links:
Cyborg Eye Flashlight Lights Up The Room
'Foyle pressed a tooth with his tongue and the peripheral cells of his retina were excited into emitting a soft light.' - Alfred Bester, 1956.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Orion's 'Skip-to-M'Lou' Entry
'A lightning pilot possibly could land that tin toy without power and still walk away from it provided he had the skill to play Skip-to-M’Lou in and out of the atmosphere...'
Tentacle Robot Gripper Recalls War Of The Worlds
'It presented a sort of metallic spider with five jointed, agile legs, and with an extraordinary number of jointed levers, bars, and reaching and clutching tentacles.'