Kim Inkyum, Cho Hyunwoo, Kitchamsetti Narasimharao, Yun Jonghyeon, Lee Jeongmin, Park Wook, Kim Daewon
Department of Electronics and Information Convergence Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea.
Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea.
Micromachines (Basel). 2023 Sep 17;14(9):1778. doi: 10.3390/mi14091778.
As an urgent international challenge, the sudden change in climate due to global warming needs to be addressed in the near future. This can be achieved through a reduction in fossil fuel utilization and through carbon sequestration, which reduces the concentration of CO in the atmosphere. In this study, a self-sustainable impact sensor is proposed through implementing a triboelectric nanogenerator with a CaCO contact layer fabricated via a CO absorption method. The triboelectric polarity of CaCO with the location between the polyimide and the paper and the effects of varying the crystal structure are investigated first. The impact sensing characteristics are then confirmed at various input frequencies and under applied forces. Further, the high mechanical strength and strong adherence of CaCO on the surface of the device are demonstrated through enhanced durability compared to the unmodified device. For the intended application, the as-fabricated sensor is used to detect the turning state of the paper Ddakji in a slap match game using a supervised learning algorithm based on a support vector machine presenting a high classification accuracy of 95.8%. The robust CaCO-based triboelectric device can provide an eco-friendly advantage due to its self-powered characteristics for impact sensing and carbon sequestration.
作为一项紧迫的国际挑战，全球变暖导致的气候突变需要在不久的将来得到解决。这可以通过减少化石燃料的使用以及通过碳固存来实现，碳固存可降低大气中一氧化碳的浓度。在本研究中，通过采用一种通过一氧化碳吸收法制造的具有碳酸钙接触层的摩擦纳米发电机，提出了一种自维持式冲击传感器。首先研究了位于聚酰亚胺和纸张之间的碳酸钙的摩擦电极性以及改变晶体结构的影响。然后在各种输入频率和施加力的情况下确认冲击传感特性。此外，与未改性的器件相比，通过增强耐久性证明了碳酸钙在器件表面具有高机械强度和强附着力。对于预期应用，所制造的传感器用于在拍洋画游戏中使用基于支持向量机的监督学习算法检测纸张拍洋画的翻转状态，呈现出95.8%的高分类准确率。基于碳酸钙的坚固摩擦电器件由于其用于冲击传感和碳固存的自供电特性，可以提供环保优势。
