New scheme opens a door for transmitting information much faster
Merely a decade ago, people were amazed that their cellular phones could send a simple text message. Now smartphones send and receive high-resolution photographs, videos, emails with large attachments, and much more. The desire for endless data has become insatiable.
“The ability to deliver information from one location to another has played a very important role in advancing human civilization,” said Robert P.H. Chang, professor of materials science and engineering at Northwestern Engineering. “Today, we live in a digital world where the demand for the ability to transmit large amounts of data is growing exponentially.”
To meet this high demand, Chang and his team developed a means to modulate light signals in the near-infrared wavelength region. Their work demonstrates a new scheme to control infrared plasmons, opening a new door for transmitting massive amounts of information.
The research appeared online on Monday, February 22 in the Nature Photonics. Peijun Guo, a senior PhD student in Chang’s laboratory, is the paper’s first author.
A plasmon is a quantum particle that arises from collective oscillations of free electrons. By controlling the plasmons, researchers can enable optical switches, potentially permitting signals in optical fibers to be switched from one circuit to another — with ultimate high speeds in the terahertz.
Researchers have demonstrated active plasmonics in the ultraviolet to visible wavelength range using noble metals, such as gold. But controlling plasmons in the near- to mid-infrared spectral range — where noble materials suffer from excessive optical losses — is largely unexplored. Research in this area has recently attracted significant attention for its importance in telecommunications, thermal engineering, infrared sensing, light emission, and imaging.
Chang’s team successfully controlled plasmons in this technologically important range by using indium-tin-oxide (ITO) nanorod arrays. The low electron density of ITO enables a substantial redistribution of electron energies, which results in light signal modulation with very large absolute amplitude. By tailoring the geometry of the ITO nanorod arrays, researchers could further tune the spectral range of the signal modulation at will, which opens the door for improved telecommunications and molecular sensing.
“Our results pave the way for robust manipulation of the infrared spectrum,” Chang said.
Learn more: Using Plasmonics to Transmit More Data
The Latest on: Plasmonics
[google_news title=”” keyword=”Plasmonics” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Plasmonics
- UCF researchers create world’s first pigment-free paint inspired by butterflieson March 29, 2023 at 1:59 am
Chanda’s lab is also working on other projects related to nanophotonics, metamaterials and plasmonics. See More: The researchers in his nanoscience lab at the University of Central Florida had already ...
- Physics students and alumnus win 5 awards, present their research at American Physical Society meetingon March 23, 2023 at 1:01 am
College of Arts and Sciences physics students and an alumnus took five major awards as they traveled with faculty to the American Physical Society March meeting this month in Las Vegas.
- Quantum engineering meets nanoscale data processing: Unleashing the power of light-driven conductivity controlon March 20, 2023 at 5:55 am
Over the past few decades, the field of data processing and transferring technology has advanced at a rapid pace. This growth can be attributed to Moore's Law, which predicts that the number of ...
- Metamaterial Market Outlook and Forecast till 2028on March 16, 2023 at 8:56 pm
The "Metamaterial Market" study describes how the technology industry is evolving and how major and emerging players in ...
- Butterfly-inspired ‘plasmonic paint’ could be brilliant for energy-efficient buildingson March 9, 2023 at 9:00 am
Light reflection and scattering off of nanostructural geometric arrangements creates the paint's striking hues.
- Quantum Nano-Plasmonicson March 19, 2022 at 12:36 am
Jacak, Janusz E. and Jacak, Witold A. 2020. Material dependence of plasmon-induced efficiency enhancement of solar cells metal-nano-modified. p. JTh4A.28.
- Nanophotonics and plasmonics articles from across Nature Portfolioon November 15, 2021 at 12:35 am
Nanophotonics and plasmonics is the study of light at the nanometre-scale. Light can only be focused to a spot roughly half its wavelength in size (a few hundred nanometres for visible light).
- ELEC_ENG 395, 495: Introduction to Nanophotonics and Plasmonics Science and Technologyon October 3, 2020 at 3:35 pm
We will cover topics that will enable students to gain a basic knowledge in key areas in nanophotonics, plasmonics, metamaterials, and nano/micro lasers. This is a rapidly growing field that will have ...
- Plasmonics Incon July 30, 2019 at 6:08 am
Plasmonics develops next-gen infrared technologies for a variety of military and commercial applications. Examples include: thermal management materials for satellites and infrared profile detection ...
- Department of Physics and Astronomyon March 13, 2017 at 3:21 pm
France We are a theoretical group conducting research in the exciting field of Nanophotonics and Plasmonics. Using electrodynamic calculations and a large variety of computational methods (such as ...
via Bing News