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Pfenning, Andreas ^{[1, 2]} ; Hartmann, Fabian ^{[1, 2]} ; Sousa Dias, Mariama Rebello ^[3] ; Castelano, Leonardo Kleber ^[3] ; Suessmeier, Christoph ^{[1, 2]} ; Langer, Fabian ^{[1, 2]} ; Hoefling, Sven ^{[4, 1, 2]} ; Kamp, Martin ^{[1, 2]} ; Marques, Gilmer Eugenio ^[3] ; Worschech, Lukas ^{[1, 2]} ; Lopez-Richard, Victor ^[3]

Afiliação do(s) autor(es)

^[1] Univ Wurzburg, Phys, Tech Phys, D-97074 Wurzburg - Germany

^[2] Wilhelm Conrad Rontgen Res Ctr Complex Mat Syst, D-97074 Wurzburg - Germany

^[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Paulo - Brazil

^[4] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife - Scotland

• Tipo de documento: Artigo Científico
• Fonte: ACS NANO; v. 9, n. 6, p. 6271-6277, JUN 2015.
• Citações Web of Science: 15

Resumo

Sensor miniaturization together with broadening temperature sensing range are fundamental challenges in nanothermometry. By exploiting a large temperature-dependent screening effect observed in a resonant tunneling diode in sequence with a GaInNAs/GaAs quantum well, we present a low dimensional, wide range, and high sensitive nanothermometer. This sensor shows a large threshold voltage shift of the bistable switching of more than 4.5 V for a temperature raise from 4.5 to 295 K, with a linear voltage temperature response of 19.2 mV K-1, and a temperature uncertainty in the millikelvin (mK) range. Also, when we monitor the electroluminescence emission spectrum, an optical read-out control of the thermometer is provided. The combination of electrical and optical read-outs together with the sensor architecture excel the device as a thermometer with the capability of noninvasive temperature sensing, high local resolution, and sensitivity. (AU)

• Processo FAPESP: 13/24253-5 - Propriedades eletrônicas e ópticas de nano-estruturas quase-bidimensionais e sistemas esfoliáveis
• Beneficiário: Diana Mercedes Meneses Gustin
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/13052-6 - Propriedades de transporte e computação quântica em nanoestruturas
• Beneficiário: Leonardo Kleber Castelano
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/51415-3 - Network for nano-optics and nano-electronics
• Beneficiário: Victor Lopez Richard
• Modalidade de apoio: Auxílio à Pesquisa - Regular