Review of drop impact on heated walls

Droplet impact on superhydrophobic surfaces: A review of recent developments

Self-powered liquid triboelectric microfluidic sensor for pressure sensing and finger motion monitoring applications

Self-powered triboelectric nanogenerator buoy ball for applications ranging from environment monitoring to water wave energy farm

Spontaneous occurrence of liquid-solid contact electrification in nature: Toward a robust triboelectric nanogenerator inspired by the natural lotus leaf

Design and optimization of rotating triboelectric nanogenerator by water electrification and inertia

Direct-current triboelectric nanogenerator via water electrification and phase control

We demonstrate a cylindrical water triboelectric nanogenerator (CW-TENG) that generates sustainable electrical output. The inner surface of the cylinder was patterned into superhydrophobic and hydrophilic parts to control water flow inside the packaged design of CW-TENG. Here, various thicknesses and roughnesses of the superhydrophobic surface, generated using aluminum oxide nanostructures for enhanced electrostatic induction, were measured to obtain the maximum output and superhydrophobicity. Also, we demonstrate the possibility of using a hydrophilic surface for energy harvesting and as a water reservoir in the packaged design.

Cylindrical Water Triboelectric Nanogenerator via Controlling Geometrical Shape of Anodized Aluminum for Enhanced Electrostatic Induction.

http://cau.ac.kr/~mtel/mtel/International_Journal_files/1-s2.0-S0894177714000910-main.pdf

Spreading and receding characteristics of a non-Newtonian droplet impinging on a heated surface

We investigated the effect of electrolyte thickness and operating temperature on the heat and mass transfer characteristics of solid oxide fuel cells. We conducted extensive numerical simulations to analyze single cell performance of a planar solid oxide fuel cell (SOFC) with electrolyte thicknesses from 80 to 100 μm and operating temperatures between 700 °C and 800 °C. The commercial computational fluid dynamics (CFD) code was utilized to simulate the transport behavior and electrochemical reactions. As expected, the maximum power density increased with decreasing electrolyte thickness, and the difference became significant when the current density increased among different electrolyte thicknesses at a fixed temperature. Thinner electrolytes are beneficial for volumetric power density due to lower ohmic loss. Moreover, the SOFC performance enhanced with increasing operating temperature, which substantially changed the reaction rate along the channel direction. This study can be used to help design SOFC stacks to achieve enhanced heat and mass transfer during operation.

/pdf/effect-of-electrolyte-thickness-on-electrochemical-reactions-10vzqrm98q.pdf

Dae Yun Kim

Papers

Design and optimization of rotating triboelectric nanogenerator by water electrification and inertia

Direct-current triboelectric nanogenerator via water electrification and phase control

Cylindrical Water Triboelectric Nanogenerator via Controlling Geometrical Shape of Anodized Aluminum for Enhanced Electrostatic Induction.

Spreading and receding characteristics of a non-Newtonian droplet impinging on a heated surface

Effect of Electrolyte Thickness on Electrochemical Reactions and Thermo-Fluidic Characteristics inside a SOFC Unit Cell