Featured Research

from universities, journals, and other organizations

Nanotechnology Makes Supertelescopes Much More Sensitive

Date:
February 10, 2009
Source:
Delft University of Technology
Summary:
Nanotechnologists have succeeded in significantly increasing the sensitivity of the new supertelescopes in Chile.

Super-conducting tunnel junctions.
Credit: Image courtesy of Delft University of Technology

Nanotechnologist Chris Lodewijk has succeeded in significantly increasing the sensitivity of the new supertelescopes in Chile. He will receive his PhD on this topic at Delft University of Technology on Monday 2 February.

In Chile's Atacama desert, technicians and astronomers from around the world are currently working on the Atacama Large Millimeter Array (ALMA). This consists of 66 advanced telescopes which will be placed at an altitude of 5,000 metres and together will provide a more precise image of the universe. They are chiefly aimed at shedding light on the question of how stars and planets are formed. ALMA is expected to be taken into service in 2012 and is viewed by astronomers as a major step forward for their field.

Aluminium nitride

Dutch astronomers have been closely involved in developing ALMA in a fruitful collaboration with nanotechnologists. The latest contribution from the nano-world comes from PhD candidate Chris Lodewijk and technician Tony Zijlstra at Delft University of Technology's Kavli Institute of Nanoscience. They have succeeded in drastically increasing the sensitivity of ALMA in a crucial frequency range by improving the functioning of the major component, the radiation-sensor.

This involves what are known as super-conducting tunnel junctions. These miniscule sensors comprise two superconductors which are separated by an insulating layer measuring 1 to 2 nanometres, usually of aluminium oxide, with an area of 500 by 500 nanometres.

However, it is impossible to avoid a very thin layer of 1 nanometre of aluminium oxide 'leaking' in certain spots. Lodewijk and Zijlstra therefore conducted research into replacing aluminium oxide with aluminium nitride (AlN), with spectacular results. An aluminium nitride layer proves to be much more homogeneous and its sensitivity, in the 602 to 720 GHz range, is also much improved.

Herschel

Incidentally, Lodewijk's research topic of super-conducting tunnel junctions is also essential to the functioning of the Herschel Space Telescope, which is to be launched in April. The Herschel Space Telescope is the successor to the Hubble telescope. Delft University of Technology's Kavli Institute of Nanoscience has developed many of the crucial tunnel junctions for the Herschel Telescope's measuring equipment.


Story Source:

The above story is based on materials provided by Delft University of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Delft University of Technology. "Nanotechnology Makes Supertelescopes Much More Sensitive." ScienceDaily. ScienceDaily, 10 February 2009. <www.sciencedaily.com/releases/2009/02/090202102940.htm>.
Delft University of Technology. (2009, February 10). Nanotechnology Makes Supertelescopes Much More Sensitive. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2009/02/090202102940.htm
Delft University of Technology. "Nanotechnology Makes Supertelescopes Much More Sensitive." ScienceDaily. www.sciencedaily.com/releases/2009/02/090202102940.htm (accessed July 31, 2014).

Share This




More Space & Time News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Supply Ship Takes Off for International Space Station

Supply Ship Takes Off for International Space Station

AFP (July 30, 2014) The European Space Agency's fifth Automated Transfer Vehicle (ATV-5) is takes off to the International Space Station on an Ariane 5 rocket from French Guiana. Duration: 00:34 Video provided by AFP
Powered by NewsLook.com
Raw: Rocket Launches Into Space With Cargo Ship

Raw: Rocket Launches Into Space With Cargo Ship

AP (July 30, 2014) Arianespace launched a rocket Tuesday from French Guiana carrying a robotic cargo ship to deliver provisions to the International Space Station. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com
Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Newsy (July 27, 2014) The satellite is back under ground control after a tense few days, but with a gecko sex experiment on board, the media just couldn't help themselves. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins