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<p>In this article, we proposed the plasmonic nanomatryoshka (core/shell/shell) based on refractory transition metal nitrides (ZrN, HfN) as a refractive index sensor to detect cholesterol and triglyceride concentrations in blood samples. The timely monitoring of cholesterol concentration in the body is essential for early diagnosis of severe diseases such as anemia, hypertension, cardiovascular diseases, hyperthyroidism, myxedema, and coronary artery illness. The emerging refractory transition metal nitride (HfN, ZrN)–based plasmonic nanosystem has shown comparable/better sensing properties to conventional plasmonic materials (e.g., Au). The optimized refractory transition metal nitride–based nanomatryoshka exhibits the sensitivity of cholesterol 233.8&#xa0;nm/RIU, 244.4&#xa0;nm/RIU, and 256.1&#xa0;nm/RIU for Au, HfN, and ZrN, respectively. This work could lead to the development of low-cost, label-free, ultrasensitive plasmonic sensors capable of monitoring cholesterol and triglyceride levels in blood. Also, it represents a significant step forward in plasmonic biosensing by establishing ZrN and HfN as strong contenders to replace noble metals in high-performance sensor applications.</p>

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Transition Metal Nitride–Based Plasmonic Nanomatryoshka for Cholesterol and Triglyceride Sensing

  • 期刊论文

  • 发表日期：

    2025年4月17日

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  • Pankaj Pathania,
  • Sumit Faujdar,
  • Jyoti Katyal

摘要

In this article, we proposed the plasmonic nanomatryoshka (core/shell/shell) based on refractory transition metal nitrides (ZrN, HfN) as a refractive index sensor to detect cholesterol and triglyceride concentrations in blood samples. The timely monitoring of cholesterol concentration in the body is essential for early diagnosis of severe diseases such as anemia, hypertension, cardiovascular diseases, hyperthyroidism, myxedema, and coronary artery illness. The emerging refractory transition metal nitride (HfN, ZrN)–based plasmonic nanosystem has shown comparable/better sensing properties to conventional plasmonic materials (e.g., Au). The optimized refractory transition metal nitride–based nanomatryoshka exhibits the sensitivity of cholesterol 233.8 nm/RIU, 244.4 nm/RIU, and 256.1 nm/RIU for Au, HfN, and ZrN, respectively. This work could lead to the development of low-cost, label-free, ultrasensitive plasmonic sensors capable of monitoring cholesterol and triglyceride levels in blood. Also, it represents a significant step forward in plasmonic biosensing by establishing ZrN and HfN as strong contenders to replace noble metals in high-performance sensor applications.