Whether you like your lenses clear, red, green, blue or purple, virtually any color could be obtained instantly by tuning a tiny electronic knob in the frame, the researchers say. Their study was described today at the 233rd national meeting of the American Chemical Society.
“Through polymer chemistry, we’ve developed lenses that aren’t like anything else on the market. This could be the fashion statement of the future,” says Chunye Xu, Sc.D., a chemical engineer at the University of Washington and associate director of the University’s Center for Intelligent Materials and Systems (C.I.M.S.).
The lenses of the ‘smart’ sunglasses feature a unique type of electrochromic polymer that has the ability to change levels of darkness and color in the presence of an electric current. Researchers have been developing electrochromic polymers for decades, but Xu’s lab is one of just a few using the technology to develop improved eyewear.
Xu has developed a prototype of the eyewear that demonstrates the feasibility of these color-changing sunglasses. Powered by a tiny battery, the prototype shades currently resemble a pair of laboratory goggles with a button attached to the frame. Turning the button activates the battery and dials up the desired color, the researcher says. Ultimately, the sunglasses can be manufactured to resemble the size and shape of regular sunglasses and should cost about the same, according to Xu.
In laboratory demonstrations, Xu has shown the lenses can switch from transparent to blue, plus various shades in between, at the flip of a switch. “We are working on a multicolored device as well, but no prototype is available yet,” she says.
As the glasses require power only during switching, the device saves energy and prolongs battery life. Like regular sunglasses, they also can be coated with a protective layer to block ultraviolet light.
Fashion-conscience shoppers will have to wait a little while for this latest thing in eyewear: A practical version of the ‘smart’ sunglasses won’t be available to consumers for another one to two years, says Xu, whose lab has filed several patents related to the color-changing glasses. More testing is needed, she notes.
So far, Xu and her associates have produced the electrochromic polymers in red, blue and green. By combining the polymers of different colors into multiple layers and supplying different levels of current from the batteries in the sunglasses, a wide variety of different colors can be produced in the lenses, Xu says. Funding for the study was provided by the University of Washington.
Charmayne Marsh | EurekAlert!
New photocatalyst speeds up the conversion of carbon dioxide into chemical resources
29.05.2017 | DGIST (Daegu Gyeongbuk Institute of Science and Technology)
Copper hydroxide nanoparticles provide protection against toxic oxygen radicals in cigarette smoke
29.05.2017 | Johannes Gutenberg-Universität Mainz
The world's highest gain high power laser amplifier - by many orders of magnitude - has been developed in research led at the University of Strathclyde.
The researchers demonstrated the feasibility of using plasma to amplify short laser pulses of picojoule-level energy up to 100 millijoules, which is a 'gain'...
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
29.05.2017 | Earth Sciences
29.05.2017 | Life Sciences
29.05.2017 | Physics and Astronomy