Bani Most Momtahina, Noor Khalid Sifulla, Ferdous A H M Iftekharul, Shobug Md Asaduzzaman
Department of Electrical and Electronic Engineering, Pabna University of Science and Technology, Pabna, 6600, Pabna, Bangladesh.
Heliyon. 2024 Dec 6;10(24):e40945. doi: 10.1016/j.heliyon.2024.e40945. eCollection 2024 Dec 30.
Methanol (CH₃OH) is a volatile, transparent, and toxic substance widely used in chemical substrates, antifreeze, and industrial applications. Ethanol (C₂H₅OH), in contrast, is commonly used in alcoholic beverages, as a fuel additive, and as an antiseptic. Differentiating between methanol and ethanol is critical due to the severe health risks associated with methanol ingestion, while ethanol is safe for consumption in moderation. To tackle this challenge, we present a highly sensitive and accurate Photonic Crystal Fiber (PCF) sensor designed for the detection of both methanol and ethanol. The proposed sensor demonstrates impressive performance, with maximum relative sensitivities (RS) of 95.72 % for methanol and 97.55 % for ethanol, while operating within the 2.2 to 3.2 THz range. Additionally, it achieves low Effective Material Loss (EML) values of 0.0066 cm⁻ for ethanol and 0.0044 cm⁻ for methanol, with Numerical Aperture (NA) values of 0.257 and 0.270, respectively. The key advantages of this sensor include its exceptional precision, high sensitivity, and low material loss, making it a reliable solution for accurately distinguishing between methanol and ethanol in various industrial and commercial applications. By providing enhanced detection capability in the THz range, this sensor improves safety monitoring and quality control processes in sectors where these substances are frequently used.
甲醇（CH₃OH）是一种挥发性、透明且有毒的物质，广泛应用于化学底物、防冻剂及工业领域。相比之下，乙醇（C₂H₅OH）常用于酒精饮料、作为燃料添加剂以及用作防腐剂。由于摄入甲醇会带来严重健康风险，而适量饮用乙醇是安全的，因此区分甲醇和乙醇至关重要。为应对这一挑战，我们提出了一种用于检测甲醇和乙醇的高灵敏度、高精度光子晶体光纤（PCF）传感器。所提出的传感器表现出色，在2.2至3.2太赫兹范围内工作时，对甲醇的最大相对灵敏度（RS）为95.72%，对乙醇的最大相对灵敏度为97.55%。此外，它对乙醇的有效材料损耗（EML）值低至0.0066 cm⁻¹，对甲醇的有效材料损耗值为0.0044 cm⁻¹，数值孔径（NA）分别为0.257和0.270。该传感器的主要优点包括其卓越的精度、高灵敏度和低材料损耗，使其成为在各种工业和商业应用中准确区分甲醇和乙醇的可靠解决方案。通过在太赫兹范围内提供增强的检测能力，该传感器改善了这些物质频繁使用的行业中的安全监测和质量控制流程。
