MMaterialsgateNEWS vom 07.01.2016

Verwandte MaterialsgateCARDS

Electronics: Aluminum nanoparticles could improve electronic displays

Whether showing off family photos on smartphones or watching TV shows on laptops, many people look at liquid crystal displays (LCDs) every day. LCDs are continually being improved, but almost all currently use color technology that fades over time. Now, a team reports in ACS Nano that using aluminum nanostructures could provide a vivid, low-cost alternative for producing digital color.

Conventional color technology used in displays is susceptible to photobleaching, or fading. So researchers have looked toward aluminum nanoparticles that can display colors in electronics, thanks to a property called “plasmon resonance.” To create plasmonic color devices, researchers group nanostructures into arrays called pixels. Color is generated by scattering light onto the pixels, with different arrangements creating different colors. Aluminum plasmonic pixels are advantageous for use in electronic displays because they are inexpensive and can be made in an ultrasmall size, which can increase image resolution. But these pixels create muted and dull colors. In a recent publication, Stephan Link and colleagues developed a method that allows the red end of the color spectrum to be more vibrant. Now, the same team reports another approach that makes the blue end of the spectrum much more brilliant, too.

The researchers used a three-step design approach to create aluminum nanostructure pixels that exploit “Fano interference” — an interaction between the plasmon resonance and the pixel’s array structure — to produce vibrant blue-end colors. Combining their previous research with this new development, the team was able to create pixels with extremely vivid colors across the entire visible spectrum. The researchers then incorporated a set of red, green and blue pixels into a liquid crystal display that could be electrically turned on and off, demonstrating this work’s potential use in commercial flat-panel displays.

The researchers acknowledge funding from the Robert A. Welch Foundation, the Office of Naval Research, Rice University, the University of New Mexico and the National Science Foundation.

Source: American Chemical Society – 06.01.2016.

Recherchiert und dokumentiert von:

Dr.-Ing. Christoph Konetschny, Inhaber und Gründer von Materialsgate
Büro für Material- und Technologieberatung
Die Recherche und Aufbereitung der in diesem Dokument genannten Daten erfolgte mit größter Sorgfalt.
Für die Richtigkeit, Gültigkeit, Verfügbarkeit und Anwendbarkeit der genannten Daten übernehmen wir zu keinem Zeitpunkt die Haftung.
Bitte diskutieren Sie die Verwendung und Eignung für Ihren konkreten Anwendungsfall mit den Experten der genannten Institution.

Sie wünschen Material- und Technologierecherchen zu diesem Thema?

Materialsgate steht für hochwertige Werkstoffberatung und innovative Materialrecherchen.
Nutzen Sie unseren Beratungsservice

MMehr zu diesem Thema

A new material that is both highly transparent and electrically conductive could make large screen displays, smart windows and even touch screens and solar cells more affordable and efficient, according to the Penn State materials scientists and engineers who discovered it.

Indium tin oxide, the transparent conductor that is currently used for more than 90 percent of the display market, has been the dominant material for the past 60 years. However, in the last decade, the price of indium has increased dramatically. Displays and touchscreen modules have become a main cost driver in smartphones and tablets, making up close to 40 percent of the cost. While memory chips and processors get cheaper, displays get more expensive from generation to generation. Manufacturers have searched for a possible ITO replacement, but until now, nothing has matched ITO's combination of optical transparency, electrical conductivity and ease of fabrication. A team led by Roman... mehr mehr lesen

Americans, on average, replace their mobile phones every 22 months, junking more than 150 million phones a year in the process.

When it comes to recycling and processing all of this electronic waste, the World Health Organization reports that even low exposure to the electronic elements can cause significant health risks. Now, University of Missouri researchers are on the path to creating biodegradable electronics by using organic components in screen displays. The researchers' advancements could one day help reduce electronic waste in the world's landfills. "Current mobile phones and electronics are not biodegradable and create significant waste when they're disposed," said Suchismita Guha, professor in the Department of Physics and Astronomy at the MU College of Arts and Science. "This... mehr mehr lesen

Professor Kyung-Cheol Choi and his research team from the School of Electrical Engineering at KAIST have developed fiber-like light-emitting diodes (LEDs), which can be applied in wearable displays.

The research findings were published online in the July 14th issue of Advanced Electronic Materials. Traditional wearable displays were manufactured on a hard substrate, which was later attached to the surface of clothes. This technique had limited applications for wearable displays because they were inflexible and ignored the characteristics of fabric. To solve this problem, the research team discarded the notion of creating light-emitting diode displays on a plane. Instead, they focused on fibers, a component of fabrics, and developed a fiber-like LED that shared the characteristics of both fabrics and displays. The essence of this technology, the dip-coating process, is to immerse... mehr mehr lesen

Imagine a soldier who can change the color and pattern of his camouflage uniform from woodland green to desert tan at will.

Or an office worker who could do the same with his necktie. Is someone at the wedding reception wearing the same dress as you? No problem - switch yours to a different color in the blink of an eye. A breakthrough in a University of Central Florida lab has brought those scenarios closer to reality. A team led by Professor Debashis Chanda of UCF's NanoScience Technology Center and the College of Optics and Photonics (CREOL) has developed a technique for creating the world's first full-color, flexible thin-film reflective display. Chanda's research was inspired by nature. Traditional displays like those on a mobile phone require a light source, filters and a glass plates. But... mehr mehr lesen


Partner der Woche

Suche in MaterialsgateNEWS

Bücher und Produkte