Pressure-driven energy conversion of conical nanochannels: Anomalous dependence of power generated and efficiency on pH

Time-periodic pressure-driven slip flow and electrokinetic energy conversion efficiency in a nanotube are studied analytically. The slip length depends on the surface charge density. Electric potential, velocity and streaming electric field are obtained analytically under the Debye–Hückel approximation. The electrokinetic energy conversion efficiency is computed using these results. The effects of surface charge-dependent slip and electroviscous effect on velocity and electrokinetic energy conversion efficiency are discussed. The main results show that the velocity amplitude and the electrokinetic energy conversion efficiency of the surface charge-dependent slip flow are reduced compared with those of the surface charge-independent slip flow.

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Pressure-driven ballistic Kelvin's water dropper for energy harvesting

Lab on a Chip ◽

10.1039/c4lc00740a ◽

2014 ◽

Vol 14 (21) ◽

pp. 4171-4177 ◽

Cited By ~ 7

Author(s):

Yanbo Xie ◽

Hans L. de Boer ◽

Ad J. Sprenkels ◽

Albert van den Berg ◽

Jan C. T. Eijkel

Keyword(s):

Energy Harvesting ◽

Energy Conversion ◽

Conversion System ◽

Energy Conversion System ◽

Pressure Driven

A microfluidic self-excited energy conversion system inspired by Kelvin's water dropper but driven by inertia instead of gravity.

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Artificial cells containing sustainable energy conversion engines

Emerging Topics in Life Sciences ◽

10.1042/etls20190103 ◽

2019 ◽

Vol 3 (5) ◽

pp. 573-578 ◽

Cited By ~ 3

Author(s):

Kwanwoo Shin

Keyword(s):

Energy Conversion ◽

Nicotinamide Adenine Dinucleotide ◽

Sustainable Energy ◽

Living Cells ◽

Energy Transduction ◽

Artificial Cells ◽

Energy Conversion Process ◽

Metabolic Reactions ◽

Metabolic Activities ◽

Reduced Nicotinamide Adenine Dinucleotide

Living cells naturally maintain a variety of metabolic reactions via energy conversion mechanisms that are coupled to proton transfer across cell membranes, thereby producing energy-rich compounds. Until now, researchers have been unable to maintain continuous biochemical reactions in artificially engineered cells, mainly due to the lack of mechanisms that generate energy-rich resources, such as adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide (NADH). If these metabolic activities in artificial cells are to be sustained, reliable energy transduction strategies must be realized. In this perspective, this article discusses the development of an artificially engineered cell containing a sustainable energy conversion process.

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