Abstract: Methods of acquiring a through-focus scanning optical microscopy (TSOM) image and inspecting a semiconductor device are provided. A method of acquiring the TSOM image includes: acquiring a plurality of actual images of different focal positions and out-of-focus degrees (distances) of the actual images with respect to an inspection object through an optical tool; acquiring a plurality of virtual images having different focal positions from the actual images and the focal positions thereof, based on the actual images and the out-of-focus degrees of the actual images; and acquiring a TSOM image of the inspection object by using the actual images and the virtual images. According to a method of acquiring the TSOM image and the method of inspecting the semiconductor device, it is possible to acquire high-precision TSOM images of the object with less effort and time and to inspect the semiconductor device efficiently and at low cost.

Abstract: Provided is a method of preparing mesoporous carbon including iron oxide nanoparticles. The method of preparing mesoporous carbon including iron oxide nanoparticles according to the present invention includes (1) dispersing and saturating iron oxide nanoparticles on a surface of mesoporous carbon and (2) calcinating the mesoporous carbon. The mesoporous carbon including iron oxide nanoparticles prepared according to the present invention may exhibit very good adsorption of an organic material and may have advantages in economic factors and convenience due to a reduction in reaction time. Therefore, contaminant treatment efficiency may be maximized by applying the mesoporous carbon including iron oxide nanoparticles according to the present invention to an adsorbent for a water treatment.

Abstract: Provided is a method of easily manufacturing a solution-phase of zerovalent iron nanowires (INW), and more particularly, to a method of synthesizing zerovalent iron nanowires (INW) in which sodium boronhydride is added as a reducing agent to reduce ferrous sulfate mixed with poly(vinyl pyrrolidone). The present invention provides a simple and efficient method of synthesizing iron nanowires (INW) as one alternative to producing iron nanoparticles (INP). The INW manufactured by this method is very effective in removing groundwater contaminants such as arsenic, chrome (VI) and TCE. The highly reactive INW has great potential for producing an INW-based adsorbent for groundwater remediation.

Abstract: A method of synthesizing air-stable nano-scale zero-valent iron (NZVI) particles at room temperature is provided. Also, a method of treating environmental pollutants using nano-scale zero-valent iron synthesized by the above method is provided. According to the method, air-dried NZVI is very effective in removing pollutants such as arsenic, and the method is simple, cost-effective, environmentally friendly, and can stabilize the NZVI in air for more than 10 months.