Kim H-Y – TechConnect Briefs

Concrete crack-healing materials using biocalcification by ureolytic bacteria isolated in marine environment: An overview

Kim H-Y, Lee H.K., Son H.M., Korea Advanced Institute of Science and Technology, KR

Micro-cracks on the surface of concrete structures frequently occur due to external force and shrinkage [1]. The deterioration of concrete durability is accelerated by the penetration of moisture and chemicals into microcracks and pores [2]. [...]

In-Situ Assessment of Wafer-Level Hermeticity by Micromembrane Technique

Jung H., Kim H-Y, Lee K-R, Park E.M., Park J.H., Yang C.-M., National Nano FabCenter, KP

Generally, the quantitative hermeticity of Wafer level Vacuum Packaging (WLVP) has been evaluated by integration of pirani gauge vacuum senses. But, this requires complex fabrication process and higher chip cost. In this work, hermeticity and [...]

Mechanical Robustness of FPA in a-Si Microbolometer with Fine Pitch

Jang W.S., Kang T.Y., Kim B.I., Kim H-Y, Kim K-M, Kim T-H., National Nanofab Center, KR

Uncooled microbolometer has the various applications in many commercial and military applications. Among many sensor materials, amorphous Si have been widely used as sensor materials for their good TCR (Temperature Coefficient of Resistance), mechanical strength, [...]

Mechanical Properties of Metallized Single Nanofibers

Bang H-S., Enomoto Y., Kim B.S., Kim H-R., Kim H-Y, Kim I.S., Kimura N., Watanabe Y., Shinshu University, JP

Our final goal is to make the metal nanofibers having good properties of metal and explore the mechanical properties of metalized single nanofibers. We are expecting that they would be strong like general metals. In [...]

Capillary Passive Valve in Microfluidic System

Cho H., Kang J.Y., Kim H-Y, Kim T.S., Microsystem Research Center, Korea Institute of Science and Technology, KR

This work reports the theoretical and experimental investigations of capillary bust valves to regulate liquid flow in microchannels. The theoretical analysis uses the Young-Laplace equation and geometrical considerations to predict the pressure at the edge [...]