Search Results - chang-hwan+choi

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Nanoengineered Superhydrophobic Aluminium Surface For Anti-Corrosion
An aluminum substrate is provided with a superhydrophobic surface structure that comprises a porous alumina layer having a hydrophobic coating. The porous alumina layer is created on the aluminum substrate by an anodizing process, and is engineered such that the thickness of the alumina layer and the diameters of the pores have nanoscale values. The...
Published: 4/26/2021   |   Inventor(s): Chanyoung Jeong, Chang-Hwan Choi
Keywords(s):  
Category(s): Materials / Manufacturing & Processes
Tunable Two-Mirror Interference Lithography System
Background:Laser interference lithography has been widely used as an effective and inexpensive technique for the fabrication of uniform nanopatterns and photonic materials on substrates. There are various geometrical configurations of interference lithography (IL) systems, the two major system configurations being the Lloyd's mirror interferometer and...
Published: 4/26/2021   |   Inventor(s): Weidong Mao, Ishan Wathuthanthri, Chang-Hwan Choi
Keywords(s):  
Category(s): Materials / Manufacturing & Processes
Marangoni Stress-Driven Droplet Manipulation On Smart Polymers For Ultra-Low Voltage Digital Microfluidics
An ultra-low voltage microfluidic device for manipulating droplets of liquid by inducing Marangoni stress therein includes a plurality of smart-polymer electrodes having films of smart polymer exposed at their surfaces. The surface of the smart polymer becomes hydrophobic or hydrophilic in response to different electromagnetic potentials. The smart...
Published: 4/26/2021   |   Inventor(s): Eui-Hyeok Yang, Yao-Tsan Tsai, Chang-Hwan Choi
Keywords(s):  
Category(s): Sensing Devices / Technology
Microfluidic-Based Cell-Culturing Platform
A microfluidic-based platform with cultured three-dimensional tissues simulates major human physiological systems for rapid evaluation of individual drugs prior to clinical testing or for personalized medical applications. The platform integrates the circulatory and lymphatic systems in a physiologically correct manner. The physiological systems may...
Published: 4/26/2021   |   Inventor(s): Peter Tolias, Woo Young Lee, Arthur Ritter, Xiaojun Yu, Hongjun Wang, Henry Du, Chang-Hwan Choi, Wenting Zhang, Yexin Gu
Keywords(s):  
Category(s): Bio Technology (Rx, dev's, sys)