Scholarlink

<p>Ever since metamaterial absorbers were first discovered, they have garnered significant interest among researchers. They are popular in the electromagnetic device industry due to their compact size, adjustable design, and nearly perfect absorption. With ongoing research and development, terahertz metamaterial absorbers (TMAs) have proved to be an important functional device for early cancer detection. A graphene-based nearly perfect terahertz metamaterial absorber consisting of two concentric circular ring resonators (CCRR) is proposed. The proposed structure is compact while maintaining the capability to detect cancer cells. The simulation results indicate that the absorptance of the metamaterial absorber reached greater than 99%. In addition, the resonance frequency of the absorber showed a strong dependence on the refractive index (RI) of the surrounding medium for the range 1.30 to 1.40, enabling the effective sensing of RI variations in an analyte layer. Accordingly, the absorber is evaluated for the detection of various cancer cells. The sensitivities achieved are 350 GHz/RIU (Basal), 333.33 GHz/RIU (HeLa), 71.43 GHz/RIU (Jurkat), 142.85 GHz/RIU (PC-12) and 357.14 GHz/RIU (MDA-MB-231) demonstrating the suitability of the suggested structure as an efficient RI sensor for a wide range of biomedical applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Graphene-based nearly perfect terahertz metamaterial absorber for refractive index-based cancer detection

  • 期刊论文

  • 发表日期：

    2026年7月13日

查看全文
  • Shanu Tripathi,
  • Ashok Kumar Kherodia

摘要

Ever since metamaterial absorbers were first discovered, they have garnered significant interest among researchers. They are popular in the electromagnetic device industry due to their compact size, adjustable design, and nearly perfect absorption. With ongoing research and development, terahertz metamaterial absorbers (TMAs) have proved to be an important functional device for early cancer detection. A graphene-based nearly perfect terahertz metamaterial absorber consisting of two concentric circular ring resonators (CCRR) is proposed. The proposed structure is compact while maintaining the capability to detect cancer cells. The simulation results indicate that the absorptance of the metamaterial absorber reached greater than 99%. In addition, the resonance frequency of the absorber showed a strong dependence on the refractive index (RI) of the surrounding medium for the range 1.30 to 1.40, enabling the effective sensing of RI variations in an analyte layer. Accordingly, the absorber is evaluated for the detection of various cancer cells. The sensitivities achieved are 350 GHz/RIU (Basal), 333.33 GHz/RIU (HeLa), 71.43 GHz/RIU (Jurkat), 142.85 GHz/RIU (PC-12) and 357.14 GHz/RIU (MDA-MB-231) demonstrating the suitability of the suggested structure as an efficient RI sensor for a wide range of biomedical applications.