Abstract The heterogeneity of the phase transition in triglycine sulfate (TGS) samples is investigated in this study, using a two-phase bridge and four-electrode sample setup. It is the practical continuation of our previous – theoretical works. Four-electrode samples and two-phase bridge measurements demonstrate interesting opportunities for observation of the dynamics of the blurred phase transition in two areas of the samples. In order to design and produce infrared sensors with desired properties it is crucial to understand the physical mechanisms and phenomena present in the investigated material. In model calculations, a characteristic peak of the bridge unbalance voltage is observed in the case of the phase transition temperature shift of less than 0.05 °C. Four-electrode samples were fabricated and bridge measurements were conducted for four frequencies and at a temperature range of 29–65 °C. Experimental results were compared with model calculations.

中文翻译：

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使用两相电桥测量研究硫酸三甘氨酸的相变

摘要 本研究使用两相桥和四电极样品装置研究了硫酸三甘氨酸 (TGS) 样品中相变的异质性。这是我们以前的理论工作的实际延续。四电极样品和两相电桥测量展示了观察样品两个区域模糊相变动力学的有趣机会。为了设计和生产具有所需特性的红外传感器，了解所研究材料中存在的物理机制和现象至关重要。在模型计算中，在相变温移小于 0.05 °C 的情况下观察到电桥不平衡电压的特征峰。制造了四电极样品，并在 29-65°C 的温度范围内对四个频率进行了电桥测量。实验结果与模型计算进行了比较。