Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Chung Ki Hong"'
Publikováno v:
Journal of Synchrotron Radiation. 23:1237-1240
An alignment method for correction of the axial and radial runout errors of the rotation stage in X-ray phase-contrast computed tomography has been developed. Only intensity information was used, without extra hardware or complicated calculation. Not
Publikováno v:
Journal of Synchrotron Radiation. 23:1024-1029
A new method of phase-shifting digital holography is demonstrated in the hard X-ray region. An in-line-type phase-shifting holography setup was installed in a 6.80 keV hard X-ray synchrotron beamline. By placing a phase plate consisting of a hole and
Autor:
Ju Yeop Shin, Chung Ki Hong, Ik-Hwan Kwon, Sung Hoon Kang, Kyeong Suk Kim, Hyun-Chul Jung, Seung Pil Yang, Hye Joon Ma
Publikováno v:
Journal of the Korean Society for Nondestructive Testing. 36:18-26
The semiconductor industry is one of the key industries of Korea, which has continued growing at a steady annual growth rate. Important technology for the semiconductor industry is high integration of devices. This is to increase the memory capacity
Publikováno v:
The 18th International Conference on Experimental Mechanics.
This paper discusses a method for eliminating geometric optics errors that can occur when combining three-dimensional thermal images using hybrid digital holography. We obtained reconstructed digital holography using phase detection autofocus techniq
Publikováno v:
Journal of the Korean Society for Precision Engineering. 32:807-813
In the present study, an interferometer system, which integrates the laser sensitivity control technique based on the theory of electronic speckle pattern interferometry, one of non-contact non-destructive analysis methods, was developed. This interf
Autor:
Ik-Hwan Kwon, Kyeong-Suk Kim, Hye-Joon Ma, Chung Ki Hong, Hyun-Il Jung, Ju-Yeop Shin, Seung-Pill Yang, Hyun-Chul Jung
Publikováno v:
Journal of the Korean Society for Nondestructive Testing. 35:141-149
In the fabrication of electronic circuits used in electronic products, molybdenum thin films are deposited on semiconductors to prevent oxidation. During the deposition, the presence of a particle or dust at the interface between the thin film and su
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 624:242-245
Alignment and operation of a zone-plate (ZP)-based transmission soft X-ray microscope (TXM) is difficult and time consuming, especially when the TXM has no dedicated X-ray source. We introduce here an efficient TXM alignment scheme. The TXM employed
Autor:
Jeon Woong Kang, Chung Ki Hong
Publikováno v:
Journal of the Korean Physical Society. 53:3827-3831
Optical vortices have been usually identified by using the characteristic fork-like structure in the interference pattern formed between a reference beam and the optical vortex field. It might, however, lead to misinterpretation of the property of vo
Autor:
Chung Ki Hong, Jeon Woong Kang
Publikováno v:
Journal of the Optical Society of Korea. 10:178-183
An in-line phase-shifting digital holographic microscopy system was constructed by inserting a conventional microscope in the object arm of a Mach-Zehnder interferometer. It was used to measure the three dimensional shape of a micro Fresnel lens. It
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 148:137-141
Total electron yield (TEY) measurement was applied to the scanning photoelectron microscopy (SPEM). The resultant image showed the thickness variation of a zinc overlayer deposited on an iron substrate with 18 nm nominal thickness. The contrast and s