Mini-Generator of Electrical Power Exploiting the Marangoni Flow Inspired Self-Propulsion

The mini-generator of electrical energy exploiting Marangoni soluto-capillary flows is reported. The interfacial flows are created by molecules of camphor emitted by the “camphor engines” placed on floating polymer rotors bearing permanent magnets. Camphor molecules adsorbed by the water/vapor interface decrease its surface tension and create the stresses resulting in the rotation of the system. The alternative magnetic flux in turn creates the current in the stationary coil. The long-lasting nature of rotation (approximately 10–20 h) should be emphasized. The brake-specific fuel consumption of the reported generator is better than that reported for the best reported electrical generators. Various engineering implementations of the mini-generator are reported.

[1]  E. Bormashenko.  Physics of Wetting: Phenomena and Applications of Fluids on Surfaces , 2017 .

[2]  Feng Shi,et al.  Precise Macroscopic Supramolecular Assembly by Combining Spontaneous Locomotion Driven by the Marangoni Effect and Molecular Recognition. , 2015, Angewandte Chemie.

[3]  Shanpeng Li,et al.  Capillarity-driven migration of small objects: A critical review , 2019, The European Physical Journal E.

[4]  A. Malkin,et al.  Explosive spreading of a concentrated emulsion over a liquid surface , 2017, Colloid Journal.

[5]  Mengmeng Song,et al.  Converting Chemical Energy Into Electricity through a Functionally Cooperating Device with Diving–Surfacing Cycles , 2014, Advanced materials.

[6]  P. Gennes,et al.  Capillarity and Wetting Phenomena , 2004 .

[7]  Feng Shi,et al.  Parallel and Precise Macroscopic Supramolecular Assembly through Prolonged Marangoni Motion. , 2018, Angewandte Chemie.

[8]  Pierre-Gilles de Gennes,et al.  Capillarity: Deformable Interfaces , 2004 .

[9]  Kevin Kaufmann,et al.  Micromotor-based energy generation. , 2015, Angewandte Chemie.

[10]  E. Bormashenko,et al.  Self-propelling rotator driven by soluto-capillary marangoni flows , 2017, 1710.09134.

[11]  Jian Hou,et al.  Meniscus-induced motion of oil droplets , 2015 .

[12]  Satoshi Nakata,et al.  Synchronized Self-Motion of Two Camphor Boats , 2001 .

[13]  Alexander A. Nepomnyashchy,et al.  Interfacial Phenomena and Convection , 2001 .

[14]  Véronique Pimienta,et al.  Self-propulsion on liquid surfaces , 2014 .

[15]  R. B. Yates,et al.  Development of an electromagnetic micro-generator , 2001 .

[16]  Yu. S. Ryazantsev,et al.  On the autonomous motion of active drops or bubbles. , 2018, Journal of colloid and interface science.

[17]  Satoshi Nakata,et al.  A Camphor Grain Oscillates while Breaking Symmetry , 2001 .

[18]  Qing Chen,et al.  Marangoni Effect-Driven Motion of Miniature Robots and Generation of Electricity on Water. , 2017, Langmuir : the ACS journal of surfaces and colloids.

[19]  Yiannos Manoli,et al.  Fabrication, characterization and modelling of electrostatic micro-generators , 2009 .

[20]  E. Bormashenko,et al.  The Moses effect enables remote control of self-propulsion of a diamagnetic rotator , 2019, Surface Innovations.

[21]  R. B. Yates,et al.  Analysis Of A Micro-electric Generator For Microsystems , 1995, Proceedings of the International Solid-State Sensors and Actuators Conference - TRANSDUCERS '95.

[22]  Jing Li,et al.  Self-propelled droplet-based electricity generation. , 2018, Nanoscale.

[23]  G. Jabbour,et al.  Inkjet Printing—Process and Its Applications , 2010, Advanced materials.

[24]  V. Valtsifer,et al.  Superposition of Translational and Rotational Motions under Self-Propulsion of Liquid Marbles Filled with Aqueous Solutions of Camphor. , 2017, Langmuir : the ACS journal of surfaces and colloids.

[25]  Joonbum Bae,et al.  Skimming and steering of a non-tethered miniature robot on the water surface using marangoni propulsion , 2017, 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[26]  Wenming Yang,et al.  Development of micro power generators – A review , 2011 .

[27]  Michael M. Khonsari,et al.  A Review of Thermal Effects in Hydrodynamic Bearings Part I: Slider and Thrust Bearings , 1987 .

[28]  Saibal Roy,et al.  A micro electromagnetic generator for vibration energy harvesting , 2007 .

[29]  N. Nguyen,et al.  Recent Advances and Future Perspectives on Microfluidic Liquid Handling , 2017, Micromachines.

[30]  Feng Shi,et al.  Tackling the Short-Lived Marangoni Motion Using a Supramolecular Strategy , 2019, CCS Chemistry.

[31]  Tuna Balkan,et al.  An electromagnetic micro power generator for wideband environmental vibrations , 2008 .