72 DPI Image
150 DPI Image
300 DPI Image
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| Title: |
Loudspeaker |
| Description: |
JQI researchers think they have discovered a way to amplify faint electrical signals using the motion of a nanomechanical membrane, or loudspeaker. If shown in experiments, the scheme could prove a boon to magnetic resonance imaging and quantum information science. This schematic of the proposed device shows its use in detecting--in this example--a signal produced by the quantum-mechanical "spin" of a group of atoms. The atoms generate a faint radiofrequency signal in a coil (L) which is connected to microscale wires that form an electrical capacitor. This vibrates the 'nanomembrane' which in turn affects the resonant frequency of a laser optical cavity. The output is light at frequency that is the sum of the original laser frequency plus the signal from the atoms.
*PML
See also http://www.nist.gov/pml/div684/loudspeaker-012412.cfm.
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| Subjects (names): |
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| Topics/Categories: |
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| Type: |
Graphic/illustration |
| Source: |
National Institute of Standards and Technology |
Credit Line as it should
appear in print: |
Credit: Taylor/NIST |
| AV Number: |
12PML002 |
| Date Created: |
2012 |
| Date Entered: |
1/24/2012 |
