File:PIA17993-DetectorsForInfantUniverseStudies-20140317.jpg

出自Wikimedia Commons
跳至導覽 跳至搜尋

原始檔案(3,000 × 2,884 像素,檔案大小:842 KB,MIME 類型:image/jpeg

說明

說明

添加單行說明來描述出檔案所代表的內容

摘要

[編輯]
描述
English: Superconducting Detectors for Study of Infant Universe

http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA17993

http://www.jpl.nasa.gov/news/news.php?release=2014-082

The BICEP2 telescope at the South Pole uses novel technology developed at NASA's Jet Propulsion Laboratory in Pasadena, Calif. The focal plane shown here is an array of devices that use superconductivity to gather, filter, detect, and amplify polarized light from the cosmic microwave background -- relic radiation left over from the Big Bang that created our universe.

The microscope is showing a close-up view of one of the 512 pixels on the focal plane, displayed on the screen in the background.

Each pixel is made from a printed antenna that collects polarized millimeter-wavelength radiation, with a filter that selects the wavelengths to be detected. A sensitive detector is fabricated on a thin membrane created through a process called micro-machining.

The antennas and filters on the focal plane are made from superconducting materials. An antenna is seen on the close-up shot in the background with the green meandering lines.

The detector uses a superconducting film as a sensitive thermometer to detect the heat from millimeter-wave radiation that was collected by the antenna and dissipated at the detector. A detector is seen on the close-up shot in the background to the right of the pink square.

Finally, a tiny electrical current from the sensor is measured with amplifiers on the focal plane called SQUIDs (Superconducting QUantum Interference Devices), developed at National Institute of Standards and Technology, Boulder, Colo. The amplifiers are the rectangular chips on the round focal plane.

The focal planes are manufactured using optical lithography techniques, similar to those used in the industrial production of integrated circuits for computers.
日期
來源 http://photojournal.jpl.nasa.gov/jpeg/PIA17993.jpg
作者 NASA/JPL-Caltech

授權條款

[編輯]
Public domain 本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zhNASA版權政策JPL圖像使用政策
警告:

檔案歷史

點選日期/時間以檢視該時間的檔案版本。

日期/時間縮⁠圖尺寸用戶備⁠註
目前2014年3月17日 (一) 21:13於 2014年3月17日 (一) 21:13 版本的縮圖3,000 × 2,884(842 KB)Drbogdan對話 | 貢獻User created page with UploadWizard

下列2個頁面有用到此檔案:

全域檔案使用狀況

以下其他 wiki 使用了這個檔案: