My Research
Nanogenerators and Self-Powered Systems
Piezoelectric Nanogenerator
A piezoelectric nanogenerator is an energy harvesting device capable of converting external kinetic energy into electrical energy via action by a nano-structured piezoelectric material. Although its definition may include any types of energy harvesting devices using nano-structures to convert various types of ambient energy (e.g solar power and thermal), it is generally used to indicate kinetic energy harvesting devices utilizing nano-scaled piezoelectric material since its first introduction in 2006. Although still in the early stages of development, the technology has been regarded as a potential breakthrough toward further miniaturization of conventional energy harvesters, possibly leading to facile integration with other types of energy harvesters and the independent operation of mobile electronic devices with reduced concern for sources of energy
Triboelectric Nanogenerator
A triboelectric nanogenerator is an energy harvesting device that converts the external mechanical energy into electricity by a conjunction of triboelectric effect and electrostatic induction. As for this power generation unit, in the inner circuit, a potential is created by the triboelectric effect due to the charge transfer between two thin organic/inorganic films that exhibit opposite tribo-polarity; in the outer circuit, electrons are driven to flow between two electrodes attached on the back sides of the films in order to balance the potential. Since the most useful materials for TENG are organic, it is also named organic nanogenerator, which is the first of using organic materials for harvesting mechanical energy.
Piezoelectric Nanogenerator
A piezoelectric nanogenerator is an energy harvesting device capable of converting external kinetic energy into electrical energy via action by a nano-structured piezoelectric material. Although its definition may include any types of energy harvesting devices using nano-structures to convert various types of ambient energy (e.g solar power and thermal), it is generally used to indicate kinetic energy harvesting devices utilizing nano-scaled piezoelectric material since its first introduction in 2006. Although still in the early stages of development, the technology has been regarded as a potential breakthrough toward further miniaturization of conventional energy harvesters, possibly leading to facile integration with other types of energy harvesters and the independent operation of mobile electronic devices with reduced concern for sources of energy
Triboelectric Nanogenerator
A triboelectric nanogenerator is an energy harvesting device that converts the external mechanical energy into electricity by a conjunction of triboelectric effect and electrostatic induction. As for this power generation unit, in the inner circuit, a potential is created by the triboelectric effect due to the charge transfer between two thin organic/inorganic films that exhibit opposite tribo-polarity; in the outer circuit, electrons are driven to flow between two electrodes attached on the back sides of the films in order to balance the potential. Since the most useful materials for TENG are organic, it is also named organic nanogenerator, which is the first of using organic materials for harvesting mechanical energy.
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Arunkumar Chandrasekhar, Gaurav Khandelwal, Nagamalleswara Rao Alluri, Venkateswaran Vivekananthan and Sang-Jae Kim "Battery-Free Electronic Smart Toys: A Step toward the Commercialization of Sustainable Triboelectric Nanogenerators", ACS Sustainable Chemistry & Engineering, 2018, 6110- 6116. I. F- 6.90
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