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작성일 : 17-10-16 20:49
Self-Powered Smart Puzzle, ACS Sustainable Chem. Eng.
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   201707_Arun_ACS_SusChemEng_SmartPuzzle.pdf (629.1K) [0] DATE : 2017-10-16 20:49:24
20170628 Arunkumar Chandrasekhar, Nagamalleswara Rao Alluri, Venkateswaran Vivekananthan, Jung Hwan Park, and Sang-Jae Kim, Portable Triboelectric Nanogenerator for Scavenging Bio-mechanical Energy towards a Self-Powered Smart Puzzle, ACS Sustainable Chem. Eng., 2017, 5 (8), pp 7310–7316. News release

ABSTRACT: Biomechanical energy is a promising renewable energy source and, owing to the demand for portable and smart
device power sources, has attracted the attention of researchers in a wide range of disciplines. We present a smart puzzle
triboelectric nanogenerator (SP-TENG) based on the contact and separation mode between a surface-modified
polydimethylsiloxane film and a paper contact material. The SP-TENG exhibits a simple structure (thin and lightweight),
with an output voltage of 70 V and a current of 6.5 μA, which can drive a liquid crystal display at the press of a finger.
A systematic investigation of the SP-TENG demonstrated it to be a practical energy harvester with the potential to charge a
commercial capacitor and drive a liquid crystal display. The SP-TENG also acts as an instantaneous force sensor with detection
sensitivity of 2.605 μA kPa−1. We fabricated six SP-TENGs as puzzle pieces and formed a self-powered smart puzzle by
connecting it to a simple logic circuit. This approach improved a simple traditional puzzle, transforming it into an interactive
smart puzzle.
KEYWORDS: Eco-friendly, Polymer interfaces, Biomechanical energy, Instantaneous force sensing, Self-powered puzzle