Hai-Yan Kong's research while affiliated with Soochow University (PRC) and other places

... The following methods can slow down the liquid discharge rate of the bubble to improve the bubble stability: adding organic solvent n-butanol [10][11][12][13][14][15], adding covering nanoparticles [16][17][18], and adjusting the Reynolds number of the liquid phase, which increases the viscosity of the bubble rising [18,19]. In the process of bubble rupture [20][21][22][23][24], the liquid surface slides down to the liquid pool while the liquid surface at the bottom tightens up due to surface tension and eventually forms a jet. If surfactant is added to reduce the surface tension, the jet can be suppressed. ...

Reference:

Dynamics of Rising Bubbles and Their Impact with Viscoelastic Fluid Interfaces

... According to literature, [18][19][20][21][22] the printing jet has the following bending energy similar to an elastic column ...

Reference:

Instability of the printing jet during the three-dimensional-printing process

... Li and Huang [12] investigated the mean first-passage time of a delayed tumor cell growth system driven by colored cross-correlated noises and then thoroughly discussed the effects of different kinds of delays and noise parameters on the mean first passage time. Wang et al. [13] established the governing equations for the non-linear transverse vibration of an axially moving viscoelastic beam with finite deformation using the Hamiltonian principle and produced nanoscale crimped fibers using stuffer box crimping and bubble electrospinning. Li et al. [14] solved a paradox in an electrochemical sensor by a fractal modification of the surface coverage model and elucidated a simple solution process to the fractal model. ...

Reference:

Stochastic transition behaviors in a tri-stable van der Pol oscillator with fractional delayed element subject to Gaussian white noise

... 2,[12][13][14][15] In the drive to improve these metrics, researchers have turned to biomimicry, a field where motifs found in nature are adapted to become synthetic structures. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] In the context of thermal insulation, the polar bear is a particularly inspiring natural example, as these animals maintain a body temperature of 36.9 ○ C with minute fluctuations of ∼0.5 ○ C even in environments as cold as −40 ○ C. [31][32][33][34][35][36][37][38] A number of factors have been implicated in this feat, including thick layers of subcutaneous fat, 32 the large thickness of their fur, 33 the ability of this fur to be transparent to thermal radiation, allowing such radiation to be absorbed by the skin, [34][35][36] and the hollow structure of the fibers in their fur. 37,38 Among these adaptations, the hollow fibers of their fur stand out as particularly intriguing for textile design. ...

Reference:

Simulation of heat transport in textiles inspired by polar bear fur

... The increasing number of laminate layers yields increasing friction between the impactor and targets [27,28]. Further research on the structural response with proof textile and a hierarchical Steiner tree structure is still proposed [29]. ...

Reference:

Energy absorption and impact response of ballistic resistance laminate

... When a bubble is broken and the fragments are fast solidified during stretching process in a high temperature environment, superthin strips are formed Kong and He, 2012). Nanoscale graphite powders as additives in the spun solution can generally guarantee superthin nanobelts. ...

Reference:

Geometrical potential and nanofiber membrane’s highly selective adsorption property

... When the swimsuit was underwater, water molecules would enter the gaps between the nanoparticles, triggering the boundary layer to change from laminar to turbulent at a lower Reynolds number, thus reducing both pressure drag and total drag (Nazemi et al., 2023). 56 Kong and He (2012) 57 explained the drag reduction mechanism based on the fractal harmonic principle. It was proposed that spraying nanoparticles on plain swimsuit fabrics could help improve their hydrodynamic properties, as the fractal size of treated fabrics was closer to that of water. ...

Reference:

A review of noteworthy progress and opportunities in swimsuit design

... The effects of electrospinning parameters-such as collecting distance, applied voltage, polymer concentration, and solvent-on the morphologies of electrospun nanofibers and their dimensions have been fully researched in [12,[17][18][19][20][21] and our previous works [10,22,23]. Yordem [17], Yang [18], and Kong et al. [19] studied experimentally and theoretically the influence of collecting distance on the morphology and diameter of nanofibers. ...

Reference:

High Throughput Preparation of Aligned Nanofibers Using an Improved Bubble-Electrospinning

... The hydrophilic-hydrophobic structure of the Fangzhu's surface guarantees the water attraction from air through the convex hydrophobic surface and water transfer through the concave hydrophilic surface to the collector, and critical volume of wetting liquid before transferring can be estimated by Duprat et al's formulation 24 or its modification. 25 The lotus leaf has only convex surface, so the attracted water drop's transmission is not controllable. The hydrophilic-hydrophobic structure is extremely important to attract water molecules from air and to transfer controllably water to the collector. ...

Reference:

Fangzhu (方诸): An ancient Chinese nanotechnology for water collection from air: History, mathematical insight, promises, and challenges

... According to literature, [18][19][20][21][22] the printing jet has the following bending energy similar to an elastic column ...

Reference:

Instability of the printing jet during the three-dimensional-printing process