The Experts below are selected from a list of 18312 Experts worldwide ranked by ideXlab platform
Zhong Lin Wang - One of the best experts on this subject based on the ideXlab platform.
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full dynamic range pressure sensor matrix based on optical and electrical dual mode sensing
Advanced Materials, 2017Co-Authors: Xiandi Wang, Zhong Lin Wang, Mengxiao Chen, Xiaoyi LiAbstract:: A pressure-sensor matrix (PSM) with full dynamic range can accurately detect and spatially map pressure profiles. A 100 × 100 large-scale PSM gives both electrical and optical signals by itself without applying an External Power Source. The device represents a major step toward digital imaging, and the visible display of the pressure distribution covers a large dynamic range.
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Applications in Self-Powered Systems and Processes
Triboelectric Nanogenerators, 2016Co-Authors: Zhong Lin Wang, Long Lin, J. Chen, Simiao NiuAbstract:A self-Powered system is defined as a system that is made of functional devices, energy harvesters and energy storage unit, so that it can operate by itself without an External Power Source, which was first proposed by Wang and Song in 2006 [1]. It represents one of the major directions in today’s sensor networks. The energy harvested by TENG can not only drive small electronics, but also can stimulate electrochemical processes. This chapter reviews the basic concept of self-Powering systems and their applications in environmental and medical sciences.
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Applications in Self-Powered Systems and Processes
Triboelectric Nanogenerators, 2016Co-Authors: Zhong Lin Wang, Long Lin, Simiao Niu, J. Chen, Yunlong ZiAbstract:A self-Powered systemSelf-Powered system is defined as a system that is made of functional devices, energy harvesters and energy storage unit, so that it can operate by itself without an External Power Source, which was first proposed by Wang and Song in 2006 [1]. It represents one of the major directions in today’s sensor networks. The energy harvested by TENG can not only drive small electronics, but also can stimulate electrochemical processes. This chapter reviews the basic concept of self-Powering systems and their applications in environmental and medical sciences.
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β cyclodextrin enhanced triboelectrification for self Powered phenol detection and electrochemical degradation
Energy and Environmental Science, 2015Co-Authors: J. Chen, Zhong Lin Wang, Jin Yang, Xing FanAbstract:We report a unique route that creatively harnessed β-cyclodextrin enhanced triboelectrification for self-Powered phenol detection as well as electrochemical degradation. A detection sensitivity of 0.01 μM−1 was demonstrated in the sensing range of 10 μM to 100 μM. In addition, β-cyclodextrin enhanced triboelectrification was designed to harvest kinetic impact energy from wastewater waves to electrochemically degrade the phenol in a self-Powered manner without using an External Power Source.
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pvdf pzt nanocomposite film based self charging Power cell
Nanotechnology, 2014Co-Authors: Zhong Lin Wang, Yan Zhang, Yujing Zhang, Xinyu Xue, Chunxiao Cui, Bin He, Yuxin Nie, Ping DengAbstract:A novel PVDF–PZT nanocomposite film has been proposed and used as a piezoseparator in self-charging Power cells (SCPCs). The structure, composed of poly(vinylidene fluoride) (PVDF) and lead zirconate titanate (PZT), provides a high piezoelectric output, because PZT in this nanocomposite film can improve the piezopotential compared to the pure PVDF film. The SCPC based on this nanocomposite film can be efficiently charged up by the mechanical deformation in the absence of an External Power Source. The charge capacity of the PVDF–PZT nanocomposite film based SCPC in 240 s is ~0.010 μA h, higher than that of a pure PVDF film based SCPC (~0.004 μA h). This is the first demonstration of using PVDF–PZT nanocomposite film as a piezoseparator for SCPC, and is an important step for the practical applications of SCPC for harvesting and storing mechanical energy.
Ian D. Sharp - One of the best experts on this subject based on the ideXlab platform.
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Hybrid photoelectrochemical and photovoltaic cells for simultaneous production of chemical fuels and electrical Power
Nature Materials, 2018Co-Authors: Gideon Segev, Jeffrey W. Beeman, Jeffery B. Greenblatt, Ian D. SharpAbstract:Harnessing solar energy to drive photoelectrochemical reactions is widely studied for sustainable fuel production and versatile energy storage over different timescales. However, the majority of solar photoelectrochemical cells cannot drive the overall photosynthesis reactions without the assistance of an External Power Source. A device for simultaneous and direct production of renewable fuels and electrical Power from sunlight is now proposed. This hybrid photoelectrochemical and photovoltaic device allows tunable control over the branching ratio between two high-value products of solar energy conversion, requires relatively simple modification to existing photovoltaic technologies, and circumvents the photocurrent mismatches that lead to significant loss in tandem photoelectrochemical systems comprising chemically stable photoelectrodes. Our proof-of-concept device is based on a transition metal oxide photoanode monolithically integrated onto silicon that possesses both front- and backside photovoltaic junctions. This integrated assembly drives spontaneous overall water splitting with no External Power Source, while also producing electricity near the maximum Power point of the backside photovoltaic junction. The concept that photogenerated charge carriers can be controllably directed to produce electricity and chemical fuel provides an opportunity to significantly increase the energy return on energy invested in solar fuels systems and can be adapted to a variety of architectures assembled from different materials. Solar energy is widely used for fuel production and energy storage, but the majority of photoelectrochemical cells cannot operate without an External Power Source. A device for simultaneous and direct production of renewable fuels and electrical Power is now proposed.
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Hybrid photoelectrochemical and photovoltaic cells for simultaneous production of chemical fuels and electrical Power.
Nature materials, 2018Co-Authors: Gideon Segev, Jeffrey W. Beeman, Jeffery B. Greenblatt, Ian D. SharpAbstract:Harnessing solar energy to drive photoelectrochemical reactions is widely studied for sustainable fuel production and versatile energy storage over different timescales. However, the majority of solar photoelectrochemical cells cannot drive the overall photosynthesis reactions without the assistance of an External Power Source. A device for simultaneous and direct production of renewable fuels and electrical Power from sunlight is now proposed. This hybrid photoelectrochemical and photovoltaic device allows tunable control over the branching ratio between two high-value products of solar energy conversion, requires relatively simple modification to existing photovoltaic technologies, and circumvents the photocurrent mismatches that lead to significant loss in tandem photoelectrochemical systems comprising chemically stable photoelectrodes. Our proof-of-concept device is based on a transition metal oxide photoanode monolithically integrated onto silicon that possesses both front- and backside photovoltaic junctions. This integrated assembly drives spontaneous overall water splitting with no External Power Source, while also producing electricity near the maximum Power point of the backside photovoltaic junction. The concept that photogenerated charge carriers can be controllably directed to produce electricity and chemical fuel provides an opportunity to significantly increase the energy return on energy invested in solar fuels systems and can be adapted to a variety of architectures assembled from different materials.
Suhail Zaki Farooqui - One of the best experts on this subject based on the ideXlab platform.
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a gravity based tracking system for box type solar cookers
Solar Energy, 2013Co-Authors: Suhail Zaki FarooquiAbstract:Abstract A novel mechanism for one-dimensional tracking of box type solar cookers along the azimuth has been reported in this paper. The proposed mechanism does not require any External Power Source, as the required tracking energy is drawn from the gravitational potential energy stored in a spring. The range of movement of the sun during the most feasible six hours of solar cooking period, along the altitude has been worked out for a location in the northern hemisphere, for the entire year. Based upon this range, a single plain booster mirror has been optimized to eliminate the need for solar tracking along this dimension (altitude). Experimental results and performance analysis of a prototype have been included. The proposed tracking system is simple and low cost for wide scale adoption in the developing countries.
Gideon Segev - One of the best experts on this subject based on the ideXlab platform.
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Hybrid photoelectrochemical and photovoltaic cells for simultaneous production of chemical fuels and electrical Power
Nature Materials, 2018Co-Authors: Gideon Segev, Jeffrey W. Beeman, Jeffery B. Greenblatt, Ian D. SharpAbstract:Harnessing solar energy to drive photoelectrochemical reactions is widely studied for sustainable fuel production and versatile energy storage over different timescales. However, the majority of solar photoelectrochemical cells cannot drive the overall photosynthesis reactions without the assistance of an External Power Source. A device for simultaneous and direct production of renewable fuels and electrical Power from sunlight is now proposed. This hybrid photoelectrochemical and photovoltaic device allows tunable control over the branching ratio between two high-value products of solar energy conversion, requires relatively simple modification to existing photovoltaic technologies, and circumvents the photocurrent mismatches that lead to significant loss in tandem photoelectrochemical systems comprising chemically stable photoelectrodes. Our proof-of-concept device is based on a transition metal oxide photoanode monolithically integrated onto silicon that possesses both front- and backside photovoltaic junctions. This integrated assembly drives spontaneous overall water splitting with no External Power Source, while also producing electricity near the maximum Power point of the backside photovoltaic junction. The concept that photogenerated charge carriers can be controllably directed to produce electricity and chemical fuel provides an opportunity to significantly increase the energy return on energy invested in solar fuels systems and can be adapted to a variety of architectures assembled from different materials. Solar energy is widely used for fuel production and energy storage, but the majority of photoelectrochemical cells cannot operate without an External Power Source. A device for simultaneous and direct production of renewable fuels and electrical Power is now proposed.
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Hybrid photoelectrochemical and photovoltaic cells for simultaneous production of chemical fuels and electrical Power.
Nature materials, 2018Co-Authors: Gideon Segev, Jeffrey W. Beeman, Jeffery B. Greenblatt, Ian D. SharpAbstract:Harnessing solar energy to drive photoelectrochemical reactions is widely studied for sustainable fuel production and versatile energy storage over different timescales. However, the majority of solar photoelectrochemical cells cannot drive the overall photosynthesis reactions without the assistance of an External Power Source. A device for simultaneous and direct production of renewable fuels and electrical Power from sunlight is now proposed. This hybrid photoelectrochemical and photovoltaic device allows tunable control over the branching ratio between two high-value products of solar energy conversion, requires relatively simple modification to existing photovoltaic technologies, and circumvents the photocurrent mismatches that lead to significant loss in tandem photoelectrochemical systems comprising chemically stable photoelectrodes. Our proof-of-concept device is based on a transition metal oxide photoanode monolithically integrated onto silicon that possesses both front- and backside photovoltaic junctions. This integrated assembly drives spontaneous overall water splitting with no External Power Source, while also producing electricity near the maximum Power point of the backside photovoltaic junction. The concept that photogenerated charge carriers can be controllably directed to produce electricity and chemical fuel provides an opportunity to significantly increase the energy return on energy invested in solar fuels systems and can be adapted to a variety of architectures assembled from different materials.
Jian Bai Xia - One of the best experts on this subject based on the ideXlab platform.
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Environmentally stable/self-Powered ultraviolet photodetectors with high sensitivity
Applied Physics Letters, 2013Co-Authors: Shengxue Yang, Sefaattin Tongay, Jian Bai XiaAbstract:Here, we demonstrate self-Powered ultraviolet photodetectors that are capable of generating opposite current flow when illuminated at different wavelengths. The photodetectors are composed of n-ZnO/Polyaniline (PANI) p-n and PANI/ZnGa2O4 type-II heterojunctions and operate without any need for External Power Source. Devices display superior stability in ambient conditions within months. Results provide opportunities for developing devices for optical recognition.
