Kim, Inkyum Cho, Hyunwoo Kim, Daewon 2024-10-10T07:30:12Z 2024-10-10T07:30:12Z 2024-10-10 2024-09 https://pubs.kist.re.kr/handle/201004/150773 The proliferation of small electronic devices has significantly increased the demand for self-powered sensors. This study introduces a triboelectric frequency sensor (TFS) that combines the frequency-responsive characteristics of triboelectric nanogenerators with a simple one-dimensional structure for sustainable vibration measurement. This sensor is specifically designed to aid in the tuning of string instruments, capable of detecting frequency responses up to 330 Hz generated by string vibrations. Structural optimization was achieved by setting a non-contact mode with a gap distance of 3 mm and utilizing perfluoroalkoxy alkane (PFA) as the contact dielectric material. The TFS exhibits dynamic response characteristics by varying the vibrating frequency and the tension of the string, facilitated by a custom-built testing setup. Frequency data captured by the sensor can be visualized on a monitor through the integration of a microcontroller unit (MCU) and dedicated coding. The practical applicability and effectiveness of this sensor in real-world scenarios are demonstrated experimentally. This innovation represents a significant step forward in the development of self-sustaining sensing technologies for precision instrument tuning. English Multidisciplinary Digital Publishing Institute (MDPI) Frequency Detection for String Instruments Using 1D-2D Non-Contact Mode Triboelectric Sensors Article 10.3390/mi15091079 1 Micromachines, v.15, no.9 Micromachines 15 9 Y scie scopus 001323383300001 2-s2.0-85205038221 Chemistry, Analytical Nanoscience & Nanotechnology Instruments & Instrumentation Physics, Applied Chemistry Science & Technology - Other Topics Instruments & Instrumentation Physics Article NANOGENERATOR ENERGY SYSTEM triboelectric nanogenerators one-dimensional string vibration frequency sensing string instrument tuning self-sustainable sensor