Carbon Nanotube Quantum Dots As Highly Sensitive Terahertz-Cooled Spectrometers
| Autor: | H. D. Drew, Paola Barbara, Gregory S. Jenkins, M. B. M. Rinzan, Serhii Shafranjuk |
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| Rok vydání: | 2012 |
| Předmět: |
Terahertz gap
Terahertz radiation Bioengineering Nanotechnology Carbon nanotube Electron law.invention law Quantum Dots General Materials Science Particle Size Quantum tunnelling Terahertz Spectroscopy Physics Spectrometer Nanotubes Carbon business.industry Mechanical Engineering Equipment Design General Chemistry Condensed Matter Physics Terahertz spectroscopy and technology Equipment Failure Analysis Quantum dot Optoelectronics business |
| Zdroj: | Nano Letters. 12:3097-3100 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/nl300975h |
| Popis: | Terahertz technology has recently emerged as a highly sought-after and versatile scientific tool in many fields, including medical imaging, security screening, and wireless communication. However, scientific progress has been hindered by the lack of sources and detectors in this frequency range, thereby known as the terahertz gap. Here, we show that carbon nanotube quantum dots coupled to antennas are extremely sensitive, broad-band, terahertz quantum detectors with spectral resolution. Their response is due to photon-assisted single-electron tunneling and it is substantially enhanced by a novel radiation-induced nonequilibrium cooling of the electrons, causing a sharp height increase of the Coulomb oscillation peaks. |
| Databáze: | OpenAIRE |
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