| If you're parked in the sun all day long, unless you're lucky enough to find a shade parking space, or immediately surrounded by a strong sense of suffocation.Recently, University of Delaware researchers have developed A prototype window that lets your car cool in the sun by adding a liquid that can convert sunlight from clear to radiant.
Variable permeability prototype schematic Using external pressure to switch the glass from opaque to transparent is possible, but cost $ 100 per square foot, the cost is too high.But the combination of smart technology and 3D printing, researchers have developed a cheap and easy to manufacture smart glass Prototype, made of a thin film-covered, 3D printed plastic panel that uses an optical structure that means that the light is refracted and returned to its original position.These structures are exposed in liquid-filled methyl salicylate Match) becomes transparent. Keith W. Goossen of the University of Delaware, said: 'We expect the cost of smart glass will be one-tenth of the cost of smart glass at the moment because our smart glass can be manufactured in the same way A lot of plastic parts, and does not require complex optoelectronic technology. Researchers used the Objet30 Pro 3D printer from Stratasys to make plastic panels and completed a recursive reflector structure for their switchable smart glass prototypes using Stratasys' transparent 3D printed photopolymer, VeroClear. In addition, the researchers developed a new method for testing Panel post-processing steps to ensure that the plastic remains highly transparent and shows an accurate corner after printing, both of which are necessary for retroreflection of the structure. It is surprising to test whether repetitive structures are tested by optical testing to determine if potential properties such as light absorption or surface roughness of the material can cause unexpected problems Fortunately, researchers can test to determine if retroreflective structures are working properly, They also demonstrated that their smart-window prototypes could stand up for thousands of cycles and switch back and forth without any signs of degradation, but they also determined that some liquid remained on the structure and now they are developing coatings Help liquid completely discharged. Obviously, one of the most exciting applications of the researchers 'new smart glass is the car windshield, which automatically switches to the reflective state when parked in the sun. "Goose says:' Can not be switched commercially Glass because the windshield still absorbs sunlight and gets hot in the dark, and because our glass is retroreflective in a non-transparent state, almost all the light is reflected to keep the car warm. Reflective glass can also be used to reduce the impact of skyscrapers on urban warming because it reflects light directly to the sun rather than the street.In addition, cheap plastic retroreflective panels can also be used to create switchable roofs to reduce the overall However, since liquid methyl salicylates used on prototype smart windows may freeze at temperatures below 16 ° F, antifreeze solutions need to be developed. The team's research paper has been published in the journal Optical Society. Source: 天工 社 |
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