Conductivity testing with varied RH% of POM films

Raw data for the paper submitted 'Post transition metal substituted Keggin POMs as thin film chemiresistive sensors for H2O and CO2 detection'
Current-voltage (IV) measurements were performed between -2 V and 2 V with a step size of 0.1 V and scan rate of 1 Vs-1. Measurements were taken in the forward and reverse direction. The resistance of the device was calculated through the inverse slope of the resultant linear plot, from which the conductivity was calculated using equation 1.1 The length and width of the channel were measured with an optical microscope.
Where σ: conductivity, ρ: resistivity, R: resistance in ohms, L: length in metres, A: the area in m2, V: voltage, and I: current.
Samples were measured in a humidity-controlled environment with a purpose-built holder and printed circuit board (PCB), coupled with a QTenki humidity sensor and temperature probe (Dracal Technologies). The appropriate gas (either air, N2, or CO2 only) was passed through the water bubbler before passing through the sample container. The container was purged for 15 minutes with the respective gas prior to each measurement. The flow rate was adjusted to control the humidity. Four repeat measurements were taken for each POM electrode.

本研究论文所提交的原始数据集，涉及过渡金属取代的凯根型多酸（POMs）作为薄膜化学电阻式传感器的H2O和CO2检测。在-2伏至2伏的电压范围内，以0.1伏的步长和1伏每秒的扫描速率进行了电流-电压（IV）测量。测量分别在正向和反向方向进行。通过计算结果线性图的倒数斜率来计算器件的电阻，进而根据公式1.1计算导电率。利用光学显微镜测量了通道的长度和宽度。其中，σ代表导电率，ρ代表电阻率，R代表欧姆电阻，L代表米长度，A代表平方米面积，V代表电压，I代表电流。样品在湿度控制的实验环境中，使用特制的夹具和印刷电路板（PCB），配合Dracal Technologies公司的QTenki湿度传感器和温度探头进行测量。适当的气体（空气、氮气或仅CO2）通过水封泡球器后，进入样品容器。在每次测量前，容器需用相应气体冲洗15分钟。通过调节流速来控制湿度。对每个POM电极进行了四次重复测量。