Natsuki Jun, Lei Xiao-Wen, Wu Shihong, Natsuki Toshiaki
Institute for Fiber Engineering and Science (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Ueda 386-8567, Japan.
School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
Micromachines (Basel). 2024 Sep 6;15(9):1134. doi: 10.3390/mi15091134.
Carbon nanotubes (CNTs) have attracted considerable attention as nanomechanical resonators because of their exceptional mechanical properties and nanoscale dimensions. In this study, a novel CNT-based probe is proposed as an efficient nanoforce sensing nanomaterial that detects external pressure. The CNT probe was designed to be fixed by clamping tunable outer CNTs. By using the mobile-supported outer CNT, the position of the partially clamped outer CNT can be controllably shifted, effectively tuning its resonant frequency. This study comprehensively investigates the modeling and vibration analysis of gigahertz frequencies with loaded CNTs used in sensing applications. The vibration frequency of a partially clamped CNT probe under axial loading was modeled using continuum mechanics, considering various parameters such as the clamping location, length, and boundary conditions. In addition, the interaction between external forces and CNT resonators was investigated to evaluate their sensitivity for force sensing. Our results provide valuable insights into the design and optimization of CNT-based nanomechanical resonators for high-performance force sensing applications.
碳纳米管（CNTs）因其卓越的机械性能和纳米尺度尺寸，作为纳米机械谐振器已引起了广泛关注。在本研究中，提出了一种新型的基于碳纳米管的探针，作为一种检测外部压力的高效纳米力传感纳米材料。碳纳米管探针设计为通过夹紧可调谐的外部碳纳米管进行固定。通过使用移动支撑的外部碳纳米管，部分夹紧的外部碳纳米管的位置可以可控地移动，有效地调整其共振频率。本研究全面研究了用于传感应用的加载碳纳米管在吉赫兹频率下的建模和振动分析。使用连续介质力学对轴向加载下部分夹紧的碳纳米管探针的振动频率进行了建模，考虑了诸如夹紧位置、长度和边界条件等各种参数。此外，还研究了外力与碳纳米管谐振器之间的相互作用，以评估它们对力传感的灵敏度。我们的结果为用于高性能力传感应用的基于碳纳米管的纳米机械谐振器的设计和优化提供了有价值的见解。
