{"id":109978,"date":"2020-06-04T10:36:38","date_gmt":"2020-06-04T14:36:38","guid":{"rendered":"https:\/\/www.ucf.edu\/news\/?p=109978"},"modified":"2025-06-20T10:30:26","modified_gmt":"2025-06-20T14:30:26","slug":"ucfs-butterfly-inspired-nanotech-makes-natural-looking-pictures-on-digital-screens","status":"publish","type":"post","link":"https:\/\/www.ucf.edu\/news\/ucfs-butterfly-inspired-nanotech-makes-natural-looking-pictures-on-digital-screens\/","title":{"rendered":"麻豆原创\u2019s Butterfly-Inspired Nanotech Makes Natural-Looking Pictures on Digital Screens"},"content":{"rendered":"

Taking inspiration from nature\u2019s nanotech that creates the stunning color of butterfly wings, a 麻豆原创 researcher is creating technology to make extremely low-power, ultra-high-definition displays and screens that are easier on the eyes.<\/p>\n

The new technology creates digital displays that are lit by surrounding light and are more natural looking than current display technologies that rely on energy-intensive bright lights hidden behind screens. The findings were published Wednesday in the journal Proceedings of the National Academy of Sciences<\/em>.<\/p>\n

\u201cThis display is more of a natural look than your current computer or smartphone screens,\u201d says Debashis Chanda, an associate professor in 麻豆原创\u2019s NanoScience Technology Center<\/a> and principal investigator of the research. \u201cIt is like seeing a portrait on the wall at your house. It doesn\u2019t have that glare or extra light. It is more like looking at the natural world.\u201d<\/p>\n

Instead of using bright LED lights located behind a screen to illuminate a display, Chanda\u2019s display is lit by reflecting light from the environment. The researcher compared the new viewing experience to switching from eating processed foods to eating natural ones.<\/p>\n

\u201cIt\u2019ll be a step up for people to get used to it,\u201d he says. \u201cBut this is a way to create displays that are harmonious with how nature displays color and as a result look more natural and don\u2019t pump out a huge quantity of light into your eyes.\u201d<\/p>\n

This is important because staring at brightly lit computer and smartphone displays for prolonged periods of time can cause eye strain, headaches and other health problems.<\/p>\n

This new displaying mechanism uses a technique used by many animals, such as butterflies, octopuses, parrots, macaws and beetles, to display color by scattering and reflecting light that hits nanoscale structures on their bodies.<\/p>\n

This type of light production is different than pigment colors or dyes, like those used in clothes or paints, that selectively absorb some colors of light and reflect others.<\/p>\n

\u201cIf we see butterflies, octopuses or many beautiful birds, their color actually originates from nanoscale structures on their feathers, skin or scales,\u201d Chanda says. \u201cThe protein molecule, the base element, they don’t have their own color but when you put them together in an orderly, controlled fashion, it creates all kinds of color. What the butterfly does is simply scatter light back in a way that it creates all this beautiful color without absorbing anything.\u201d<\/p>\n

The technology, known as plasmonic color displays, can show different colors based on the size, shape and patterns of reflective metallic nanostructures inside the screens. The technology, however, has been limited by problems with displaying the correct color at different angles, fabricating it over large areas and displaying black.<\/p>\n

Building upon his previous research, Chanda\u2019s group has overcome these challenges by finding a way to make the nanostructures into precise designs to fully control angle-independent scattering of light, resulting in colors that don\u2019t depend on viewing angle.<\/p>\n

\u201cWe discovered a technique where nanoparticles could self-assemble a quasi-random pattern on a pre-designed substrate and then we could optimize that in a very controlled process to create a certain color, like yellow, blue, gold, magenta, white and more, just by changing nanoparticle size, unlike pigment-based colors where different absorbing molecules are needed for different colors,\u201d Chanda says.<\/p>\n

The self-assembly process used in the study is similar to how the human body controls growth. In the body, enzymes and hormones released at certain times regulate growth. In Chanda\u2019s study deposition rate, pressure and temperature control the design and growth of nanostructures, which provides control of the color of light displayed.<\/p>\n

\u201cWith the mechanism we developed, we can use physical parameters to map back to a particular pattern and subsequently a color,\u201d Chanda says.<\/p>\n

\u201cHowever, black color needed a different approach. The scattered light from the nanostructured surface is blocked using a liquid crystal layer in a controlled manner resulting in the first demonstration of black\/grey colors in structural color displays,\u201d Chanda says.<\/p>\n

With the field still emerging, the researcher says it could be a while before displays and consumer products using plasmonic nanostructures are available to the public, but the results of the study are a significant step in that direction.<\/p>\n

Study authors also include Daniel Franklin, lead author, a graduate of 麻豆原创\u2019s doctoral program in the Department of Physics<\/a> and now a postdoctoral fellow at Northwestern University; Ziqian He, a doctoral student in 麻豆原创\u2019s College of Optics and Photonics<\/a>; Pamela Mastranzo Ortega, a visiting doctoral student in Chanda\u2019s Nano-Optics Group; Alireza Safaei, formerly a doctoral\u00a0 researcher in 麻豆原创\u2019s Department of Physics and NanoScience Technology Center and now a postdoctoral scholar at the University of Illinois at Urbana-Champaign; Pablo Cencillo-Abad, a postdoctoral researcher in Chanda\u2019s Nano-Optics Group; and Shin-Tson Wu, a Pegasus professor in 麻豆原创\u2019s College of Optics and Photonics.<\/p>\n

The ongoing research is funded by the National Science Foundation through two regular grants since 2014.<\/p>\n

Chanda has joint appointments in 麻豆原创\u2019s NanoScience Technology Center, Department of Physics and College of Optics and Photonics<\/a>. He received his doctorate in photonics from the University of Toronto and worked as a postdoctoral fellow at the University of Illinois at Urbana-Champaign. He joined 麻豆原创 in 2012.<\/p>\n","protected":false},"excerpt":{"rendered":"

The digital displays are lit by surrounding light and are more natural looking than current displays that rely on bright lights hidden behind screens.<\/p>\n","protected":false},"author":199,"featured_media":110036,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"lazy_load_responsive_images_disabled":false,"footnotes":"","_links_to":"","_links_to_target":"","_wp_rev_ctl_limit":""},"categories":[23,24],"tags":[982,3277,5390,3715],"tu_author":[],"class_list":["post-109978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","category-science-technology","tag-college-of-sciences","tag-nanoscience","tag-optics-and-photonics","tag-physics"],"yoast_head":"\n麻豆原创\u2019s Butterfly-Inspired Nanotech Makes Natural-Looking Pictures on Digital Screens | 麻豆原创 News<\/title>\n<meta name=\"description\" content=\"The digital displays are lit by surrounding light and are 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