A Triboelectric Closed‐Loop Sensing System for Authenticity Identification of Paper‐Based Artworks

Abstract

Nondestructive testing (NDT) is crucial technology for authenticity identification of paper‐based artworks. Emerging optical spectroscopy is an important technique of NDT at present, by which high‐bightness light, electron beams, and rays could cause permanent damage to different types of paper‐based artworks. Here, using only NDT technology, triboelectric closed‐loop sensing system (TE‐CLSS) is developed by contact electrification effect. It is composed of a stethoscope‐like triboelectric nanogenerator (SL‐TENG) and matched closed‐loop feedback circuit (CLFC), that is capable of active sensing in a similar way to a stethoscope when it makes slight contact with the surface of object. The results report that the ΔV accuracy of TE‐CLSS could achieve 0.01 V, with relative error of measurement within 3%, and average response time of 0.205 s. Furthermore, it could sense the area change of the test material layers that accurately reach millimeter level, by which different grayscale values, colored inks, and oil paintings are successfully identified. This work gives a new insight into the future NDT technologies suitable for the identification of cultural relics.

Recent Advances in Materials, Designs and Applications of Skin Electronics

“…Electronic stethoscopes and accelerometers are the two effective and frequently-used methods to detect passive mechanical signals. The electronic stethoscopes can translate the vibration vibrations of their diaphragm into electric signals by piezoelectric [67] or triboelectric [68] materials. Unlike the ultra-thin and weak structure of electronic stethoscopes [69], the accelerometers have strong and durable designs.…”

Triboelectric Nanogenerators for Ocean Wave Energy Harvesting: Unit Integration and Network Construction

“…TENG is based on the coupling of triboelectrification and electrostatic induction, which is the application of Maxwell's displacement current in energy and sensors [18]. Due to the unique working mechanism, TENGs have some advantages over EMGs, such as being light weight [19][20][21], low cost [22][23][24][25], having a wide material-selection range [26][27][28][29], and low-frequency adaptation [30][31][32][33]. After 10 years of development, TENGs have exhibited great capabilities in harvesting mechanical energy from various sources, providing a new effective strategy for ocean wave energy exploitation [29].…”