Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Roosevelt Road, Section 4, Taipei 10617, Taiwan.
Sensors (Basel). 2013 Nov 20;13(11):15833-45. doi: 10.3390/s131115833.
High infrared absorption, large temperature coefficient of resistance (TCR) and small 1/f noise are preferred characteristics for sensing materials used in bolometers. In this paper, we discuss a cytochrome c protein as a potential sensing material for long-wavelength bolometers. We simulated and experimentally proved high infrared absorption of cytochrome c in the wavelength between 8 μm and 14 μm. Cytochrome c thin films were deposited on a hydrophilic surface using the spin coating method. The resistance variation with temperature is measured and we show that the TCR of cytochrome c thin films is consistently higher than 20%. The measured values of 1/f noise were as low as 2.33 × 10⁻¹³ V²/Hz at 60 Hz. Finally, we test the reliability of cytochrome c by measuring the resistance changes over time under varying conditions. We found that cytochrome c thin films deteriorated significantly without appropriate packaging.
高红外吸收率、大电阻温度系数（TCR）和小 1/f 噪声是用于测辐射热计的传感材料的理想特性。在本文中，我们讨论了细胞色素 c 蛋白作为长波长测辐射热计的潜在传感材料。我们通过模拟和实验证明了细胞色素 c 在 8μm 至 14μm 波长范围内具有高红外吸收率。我们使用旋涂法将细胞色素 c 薄膜沉积在亲水表面上。测量了电阻随温度的变化，并表明细胞色素 c 薄膜的 TCR 始终高于 20%。测量的 1/f 噪声值在 60Hz 时低至 2.33×10⁻¹³ V²/Hz。最后，我们通过测量在不同条件下随时间变化的电阻变化来测试细胞色素 c 的可靠性。我们发现，在没有适当包装的情况下，细胞色素 c 薄膜会明显恶化。
