Syed Muzamil Ahmed, Norhayati Soin, Sharifah Fatmadiana Wan Muhamad Hatta, Yasmin Abdul Wahab
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引用次数: 0
Abstract
Developing flexible, extremely sensitive strain sensors with a broad operating range is critical for applications such as healthcare, human motion, human–machine interface, and robotics. The COMSOL Multiphysics Finite Element Modeling software has been used to simulate serpentine geometry CNT-silicon-based flexible piezo-resistive (PZR) strain sensors with various sensor line thicknesses (LT), line widths (LW), pitches (P), and structures (Str whereby Str1 is P in the x-direction, and Str2 is P in the y-direction). Their effect on mechanical and piezo-resistive characteristics for strain ranging from 0 to 100% has been studied. The responses of the proposed modeled sensors have been simulated and analyzed in terms of numerous variables, including maximum displacement, von Mises stress, and sensor sensitivity. The simulation study concluded that for the Str1 structure, the PZR strain sensor with P (0.5 mm), LT (0.5 mm), and LW (1.5 mm) had the highest sensitivity (GF 120.50), while the PZR strain sensor with P (0.5 mm), LT (0.5 mm), and LW (1.5 mm) had the lowest sensitivity (GF 48.99). It is also found that the sensitivity of the Str1 PZR strain sensors rises when LW increases while P and LT decrease. Furthermore, the PZR strain sensor with P (0.5 mm), LT (0.5 mm), and LW (1 mm) of structure Str2 has the highest sensitivity (GF 165.95), and the PZR strain sensor with P (1.5 mm), LT (0.5 mm) and LW (0.5 mm) showed the lowest sensitivity (GF 161.62) among all the Str2 sensors, and it is revealed that the sensitivity increases with the decrease of P and LT while the effect of LT is not apparent. As a result, the modeled sensor can be employed as a highly sensitive PZR strain sensor with an excellent capability to monitor a wide range of human motions over the range of 0–100% strain.
期刊介绍:
he Journal of Computational Electronics brings together research on all aspects of modeling and simulation of modern electronics. This includes optical, electronic, mechanical, and quantum mechanical aspects, as well as research on the underlying mathematical algorithms and computational details. The related areas of energy conversion/storage and of molecular and biological systems, in which the thrust is on the charge transport, electronic, mechanical, and optical properties, are also covered.
In particular, we encourage manuscripts dealing with device simulation; with optical and optoelectronic systems and photonics; with energy storage (e.g. batteries, fuel cells) and harvesting (e.g. photovoltaic), with simulation of circuits, VLSI layout, logic and architecture (based on, for example, CMOS devices, quantum-cellular automata, QBITs, or single-electron transistors); with electromagnetic simulations (such as microwave electronics and components); or with molecular and biological systems. However, in all these cases, the submitted manuscripts should explicitly address the electronic properties of the relevant systems, materials, or devices and/or present novel contributions to the physical models, computational strategies, or numerical algorithms.