Artificial Optical Materials Could Allow Cheaper, Flatter, More Efficient Detectors For Night Vision

Artificial Optical Materials Could Allow Cheaper, Flatter, More Efficient Detectors For Night Vision

Artificial optical materials could allow cheaper, flatter, more efficient detectors for night vision and other uses

A new way of taking images in the mid-infrared part of the spectrum, developed by researchers at MIT and elsewhere, could enable a wide variety of applications, including thermal imaging, biomedical sensing, and free-space communication.

The mid-infrared (mid-IR) band of electromagnetic radiation is a particularly useful part of the spectrum; it can provide imaging in the dark, trace heat signatures, and provide sensitive detection of many biomolecular and chemical signals. But optical systems for this band of frequencies have been hard to make, and devices using them are highly specialized and expensive. Now, the researchers say they have found a highly efficient and mass-manufacturable approach to controlling and detecting these waves.

The findings are reported in the journal Nature Communications, in a paper by MIT researchers Tian Gu and Juejun Hu, University of Massachusetts at Lowell researcher Hualiang Zhang, and 13 others at MIT, the University of Electronic Science and Technology of China, and the East China Normal University.

The new approach uses a flat, artificial material composed of nanostructured optical elements, instead of the usual thick, curved-glass lenses used in conventional optics. These elements provide on-demand electromagnetic responses and are made using techniques similar to those used for computer chips. “This kind of metasurface can be made using standard microfabrication techniques,” Gu says. “The manufacturing is scalable.”

Read more.

More Posts from Dotmpotter and Others

9 years ago

Amazing Maps of the World

9 years ago
A look inside the world's first underground park, the Lowline
Over the weekend a test lab for the world’s first underground park opened its doors to visitors in New York. Housed in the former Essex Street Market building in Manhattan, it is the first step toward making former NASA engineer James Ramsey's idea for the Lowline a reality. His plans for the Lowline propose transforming a disused trolley terminal into a subterranean park using innovative solar technology.

I think it’s a cool engineering experiment but if he really is pursuing this to give green spaces to under served urban communities, then proposing it to be built in LES is fallacy. That area already has parks close by and is inhabited by at least the upper 30% (economically) of the city. What would be spectacular is if the technology they’ve developed for channelling sunlight could be used in subway stations that people already use. Plants and sunlight there would make the lives of millions of commuters across the subway network so much better. This disused trolley place should be made into an urban farm me thinks :)


Tags
9 years ago
Digging into the floor of the North Sea to map the terrain and DNA of a sunken country
Eight thousand years ago climate change and rising sea levels inundated the country of Doggerland. Now archaeologists are mapping its terrain—and its DNA.

Tags
7 years ago

my man went for it

11 years ago
Study: Superconducting Technologies Will Soon Be Used For Transportation, Power Storage

Study: Superconducting Technologies Will Soon Be Used for Transportation, Power Storage

9 years ago
One thousand different words for water
Researcher puts New Guinea’s numerous languages online

New Guinea is one of the most linguistically diverse places in the world, with more than 1000 distinct languages crammed into an area not much larger than the state of Texas.

Despite this rich variety—for comparison, Europe contains about 280 languages—linguists have only analyzed the grammatical structures of a fraction of the South Pacific island’s languages. Now, Simon Greenhill, a linguist at Australian National University in Canberra, is trying to remedy that situation, by gathering together hundreds of thousands of words from published surveys, book chapters, and articles, as well as the accounts of early European explorers, and putting them into an online database called TransNewGuinea.org.

Updated daily, the site already contains glossaries for more than 1000 languages from 23 different language families, including 145,000 words. There are roughly 1000 different words for “water,” as well as for “louse,” and linguists and language enthusiasts can view all the languages by geographic origin in an interactive map.

Greenhill introduced the scientific community to the site(PDF) this week in the journal PLOS ONE; already, he has used the database to look for clues about how the different languages are related. Through comparative, historical, and computational analyses of the data, he hopes the linguistic community will now use the site to solve long-standing questions about how New Guinean populations expanded and spread their culture. 


Tags
9 years ago
The Reality Behind Your Motion Sickness
Why do some people get nauseous riding cars or airplanes?

Tags
11 years ago
Don’t Feel Drowned By Your Habits, We All Know Smoking Doesn’t Make Sense, We All Know Somebody Who

Don’t feel drowned by your habits, we all know smoking doesn’t make sense, we all know somebody who is sick because of smoking. You have the power to stop smoking. Or replace your bad habits that hinder your life with good habits that help it progress. I have a client that used to smoke, now every time she is craving a cigarette she does 50 squats, no smoking now for 2 months, but great muscle tone in her legs! This is what I mean when I say love yourself… Not your reflection. Your actions are a reflection of how you see yourself. Big up all those who have stopped smoking, stopping smoking or even thinking about it! If you have stopped let me know how long for, if you are stopping let me know how and why. If you are thinking about it hopefully you will read the comments and try to stop. #spartanfam #strength #health #streetart

  • that-one-feel
    that-one-feel liked this · 6 years ago
  • dotmpotter
    dotmpotter reblogged this · 7 years ago
  • urbanoceanix
    urbanoceanix reblogged this · 7 years ago
  • atomicmistglaedrhallow-blog
    atomicmistglaedrhallow-blog liked this · 7 years ago
  • netavi
    netavi liked this · 7 years ago
  • davidjkstuff
    davidjkstuff liked this · 7 years ago
  • psychedelic-science
    psychedelic-science reblogged this · 7 years ago
  • sciencenerd4-blog
    sciencenerd4-blog liked this · 7 years ago
  • quirinoramalho
    quirinoramalho liked this · 7 years ago
  • lethargic-squid
    lethargic-squid liked this · 7 years ago
  • ward-cleaver
    ward-cleaver liked this · 7 years ago
  • tunebytune
    tunebytune reblogged this · 7 years ago
  • tunebytune
    tunebytune liked this · 7 years ago
  • rukasudark
    rukasudark liked this · 7 years ago
  • waminatorphd
    waminatorphd reblogged this · 7 years ago
  • amarantine-amirite
    amarantine-amirite liked this · 7 years ago
  • llort
    llort liked this · 7 years ago
  • vavelix
    vavelix reblogged this · 7 years ago
  • vavelix
    vavelix liked this · 7 years ago
  • cristalblade
    cristalblade reblogged this · 7 years ago
  • mac-3-impact
    mac-3-impact reblogged this · 7 years ago
  • mac-3-impact
    mac-3-impact liked this · 7 years ago
  • cristalblade
    cristalblade liked this · 7 years ago
  • causas-memora
    causas-memora liked this · 7 years ago
  • emmateetee
    emmateetee liked this · 7 years ago
  • stopoveranalyzingstuff
    stopoveranalyzingstuff liked this · 7 years ago
  • auroramere
    auroramere liked this · 7 years ago
  • redraidervalhalla
    redraidervalhalla liked this · 7 years ago
  • joe-a-nevem
    joe-a-nevem reblogged this · 7 years ago
  • radiocatfish
    radiocatfish reblogged this · 7 years ago
  • radiocatfish
    radiocatfish liked this · 7 years ago
  • lordtableshark
    lordtableshark reblogged this · 7 years ago
  • lordtableshark
    lordtableshark liked this · 7 years ago
  • materialsscienceandengineering
    materialsscienceandengineering reblogged this · 7 years ago
dotmpotter - dot potter
dot potter

Reminding myself that people are making a difference.

259 posts

Explore Tumblr Blog
Search Through Tumblr Tags