#filters
An optical coating like no other
For more than a century, optical coatings have been used to better reflect certain wavelengths of light from lenses and other devices or, conversely, to better transmit certain wavelengths through them. For example, the coatings on tinted eyeglasses reflect, or “block out,” harmful blue light and ultraviolet rays.
But until now, no optical coating had ever been developed that could simultaneously reflect and transmit the same wavelength, or color.
In a paper in Nature Nanotechnology, researchers at the University of Rochester and Case Western Reserve University describe a new class of optical coatings, so-called Fano Resonance Optical Coatings (FROCs), that can be used on filters to reflect and transmit colors of remarkable purity.
In addition, the coating can be made to fully reflect only a very narrow wavelength range.
Post link
Solar Nanowire-Nanotube Purification Filter Offers Easy Access To Clean Drinking Water
Even today, clean water is a privilege for many people across the world. According to the World Health Organization (WHO), at least 1.8 billion people consume water contaminated with feces, and by 2040, a large portion of the world will endure water stress because of insufficient resources of drinking water. Meanwhile, the United Nations Children’s Fund (UNICEF), around 1,800 children die every day from diarrhea because of unsafe water supply, which causes diseases like cholera.
It has become imperative then that we develop efficient and cost-efficient ways to decontaminate water. And that is exactly what a team of scientists led by László Forró at EPFL have accomplished, with a new water purification filter that combines titanium dioxide (TiO2) nanowires and carbon nanotubes powered by nothing but sunlight.
The scientists first show that the TiO2nanowires by themselves can efficiently purify water in the presence of sunlight. But interweaving the nanowires with carbon nanotubes forms a composite material that adds an extra layer of decontamination by pasteurizing the water – killing off human pathogens such as bacteria and large viruses.
Post link
Copper coating on 3-D-printed plastic filters proposed as a pandemic fighter
In the ongoing fight against COVID-19, experts on microbiology and copper are recommending an expanded use of the metal to reduce the virus’s spread. So might copper be incorporated into the construction of masks, the universally accepted virus-fighting personal item?
That’s what Jing Zhang of the School of Engineering and Technology at IUPUI and a team of researchers are doing, using a copper coating on 3-D-printed plastic filters to create more-efficient masks and respirators.
“One study in 2015, funded by the U.S. Department of Defense, said that a copper alloy can kill 58 percent of infections,” said Zhang, an associate professor in the Department of Mechanical and Energy Engineering. “We can use copper plating to cover some frequently touched surfaces such as doorknobs and elevator buttons; that inspired me to see how we could combine what looks like almost a magic metal into a mask design.”
Post link
Yelssomaim on Instagram
# : / + [ ].
# : / + [ ].
RaucherpausebyTobias Sieben on Flickr.
Nicotine stained trash
discarded cigarette butts
addiction’s captive
Post link
#instagrammers #igers #instalove #instamood #instagood #like #follow #comment #shoutout #photography #iphoneography #androidography #filter #filters #grunge #contests #photo #igaddict #photooftheday #insta #picoftheday #bestoftheday #instadaily #instafamous #popularpage #popular (presso Tor Caldara)
Post link
#instagrammers #igers #instalove #instamood #instagood #like #follow #comment #shoutout #photography #iphoneography #androidography #filter #filters #hipster #contests #photo #igaddict #photooftheday #insta #picoftheday #bestoftheday #instadaily #instafamous #popularpage #popular (presso Tor Caldara)
Post link
resolvi postar aqui a receita que eu uso nos meus icons, espero que gostem e façam um bom uso :)
I decided to post here the recipe that I use in my icons, I hope you like it and make a good use of it :)
- dê like ou reblog e não esqueça de dar os creditos a mim se usar, por favor!♡
- like or reblog and don’t forget to credit me if you use it, please!♡
Smokey smiles
I get bored as we can see
Playing around with some more filters
Playing with some filters
Playing with filters #selfie #butfirstletmetakeaselfie #gay #gaymilan #milan #faces #filters #fmg #beard #gaybeard
Post link
