基于谐振隧道二极管的纳米温度计:从低温到室温
Nanothermometer Based on Resonant Tunneling Diodes: From Cryogenic to Room Temperatures
作者:Andreas Pfenning;Fabian Hartmann;Mariama Rebello Sousa Dias;Leonardo Kleber Castelano;Christoph Süßmeier;Fabian Langer;Sven Höfling;Martin Kamp;Gilmar Eugenio Marques;Lukas Worschech;Victor Lopez-Rich
关键词:resonant tunneling diode,thermometer
DOI:https://doi.org/10.1021/acsnano.5b01831
发表时间:2015年
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摘要
传感器的微型化以及扩大温度感测范围是纳米热测量领域的基本挑战。通过利用共振隧道二极管中观察到的大温度依赖筛选效应,以及GaInNAs/GaAs量子阱,我们提出了一个低维、宽范围和高灵敏度的纳米温度计。该传感器在4.5到295K温度升高时显示出双稳态开关的阈值电压转变大于4.5V,具有19.2mVK–1的线性电压-温度响应,并且温度不确定性在毫开尔文量级上。此外,我们监测电致发光发射光谱,提供了温度计的光学读出控制。电气和光学读出结合传感器结构,使得该设备具有非侵入式温度感测、高局部分辨率和高灵敏度的能力,从而使其成为一种优秀的温度计。
Abstract
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.
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