Education

Ulsan National Institute of Science and Technology(UNIST), Ulsan, Republic of Korea

M.S.-Ph.D. in Mechanical Engineering, March 2014 – February 2020

- Dissertation: Hierarchical Micro-nano structured composites for enhanced mechanical sensing and power generation

- Academic Advisor: Professor Young-Bin Park

- Areas of Concentration; Structural design of multi-functional composites, Carbon nanomaterials, Flexible and wearable sensor,    Manufacturing process, Energy harvesting sensor, Compression molding, Photolithography, Micro-nano structure control

- Courses including Advanced solid mechanics, Introduction to manufacturing process, Mechanics of composite materials,              Composites process engineering, Nano mechanics, Nano convergent energy devices, Polymer and composite manufacturing,              Mechanics of composite materials

Ulsan National Institute of Science and Technology(UNIST), Ulsan, Republic of Korea

B.Sc. in Mechanical Engineering, March 2010 – February 2014

Work Experience

Fraunhofer_ICT (UNIST), Ulsan, Korea (March 2020-August 2020)

   · Developed center cover floor for electrical vehicle using HP (High Pressure)-RTM method.

   · Conducted materials testing and characterization with emphasis on fatigue and fracture.

Ulsan National Institute of Science and Technology, Ulsan, Korea

(MS-Ph.D. March 2014 – February 2020)

· Developed a flexible hydrogel sensor with high pressure and temperature sensitivities based on a multilayered composite with elastic modulus gradient and stress concentrating geometries

· Developed a flexible electronic skin (e-skin) highly sensitive to multimodal vibrations and a specialized sensing ability is of great interest for a plethora of applications, such as tactile sensors for robots, seismology, healthcare, and wearable electronics

· Developed simple fabrication process of micro-patterned ultrasonic spray method for sensor

· Developed pressure and shear measurable design and demonstrate a very simple fabrication process for our sensor design

· Developed a zinc oxide nanorods (ZnO NRs) grown on microscale curvature surfaces of CFRPs having large surface areas for developing spacer-free, ultrathin, highly sensitive, and flexible triboelectric sensors (TESs)

· Developed in situ flow position and viscosity of resin, cure and impregnation process monitoring system by using resistance measurement

· Study of investigating the piezo resistive effects of various factors for sensing performance, such as wt.%, xGnP size and xGnP:MWCNT ratio

· Design, analysis and mechanical testing experience

- Photolithography unique micro-mold design guidelines

- ZnO nanostructure optimization on various surface

- Optimization of experimental parameters using design and analysis of experiments

- Modeling and numerical simulation of microstructure through micromechanics and FEA

- Surface treatment: oxygen plasma, atmospheric air plasma, large pulsed electron beam, silane coating, DC and RF sputtering 

- Analysis experience: high-resolution scanning electron microscopy (SEM), high-resolution transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), rheological analysis, X-ray photoelectron spectroscopy (XPS), Confocal Raman

- Mechanical testing: tensile test, flexural test, drop weight impact test, compression test, shear test, bending test