• Applied Microscopy
• /
• v.10 no.1_2
• /
• pp.33-40
• /
• 1980

미국산 사초속 식물의 잎의 표피형에 대한 조사로서 6 Sect., 6 Species에 대해 주사현미경을 사용하여 표피형을 조사하였다. 표피형의 구성요소인 숨구멍(Stomata), 세포벽(Cell wall), 유두돌기(Papillae), 가시돌기 (Prickle), 납질(Waxy)등의 모양을 조사하였다. 표피형 구성세포의 특징이 종류에 따라 차이가 있어 사초속 식물의 감별 및 분류에 좋은 형질이 될수가 있다고 보는 바이다.

• 한국전자현미경학회:학술대회논문집
• /
• 2005.11a
• /
• pp.56-60
• /
• 2005

• Applied Microscopy
• /
• v.4 no.1
• /
• pp.1-4
• /
• 1974

Variations of camera constant due to the change of the lens current were examined for Hitachi HU-125C electron microscope. It was shown that the variation in specimen height had a marked effect on the change of camera constant. Also the rotation of the image from the diffraction pattern was determined by using a test crystal. Suggestions were given for improving practical operation of electron microscope in the work of thin foils.

• 한국전자현미경학회:학술대회논문집
• /
• 2004.11a
• /
• pp.82-85
• /
• 2004

• 한국전자현미경학회:학술대회논문집
• /
• 2005.05a
• /
• pp.81-85
• /
• 2005

• Journal of the korean academy of Pediatric Dentistry
• /
• v.33 no.2
• /
• pp.201-206
• /
• 2006

A recent laboratory study has demonstrated improved caries lesion resistance with enamel that was exposed to $CO_2$ laser irradiation for very short time period. When topical fluoride treatment was performed before or after laser irradiation, reductions in dental caries. The purpose of this scanning electron microscopic(SEM) study and atomic force microscope study was to characterize surface alterations in tooth enamel after in vitro laser irradiation alone and combined topical fluoride treatment either before or after laser irradiation. The treatment effects of laser irradiation led to the formation of an irregular, mild porosities and fine fissures, also created granular materials. But when laser irradiation was followed by APF, the enamel surface had homogenous architecture. The result led to the caries resistance effects by these granular structures have been considered to represent redeposited mineral phases due to the mobilization of calcium, phosphate, and fluoride from lased enamel.

• 한국전자현미경학회:학술대회논문집
• /
• 2005.11a
• /
• pp.130-131
• /
• 2005

• 한국전자현미경학회:학술대회논문집
• /
• 2002.11a
• /
• pp.41-45
• /
• 2002

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2003.03a
• /
• pp.209-209
• /
• 2003

기계가공용으로 개발된 3성분계 Ti-Si-N 코팅막은 약 40㎬이상의 초고경도이며, 그 미세구조는 나노입자의 TiN결정과 비정질 Si$_3$N$_4$로 이루어져 있다. Ti-Si-N 코팅의 경도는 극소량 Si를 첨가함에 따라 급격히 증가하였으며, 7.7at%에서 약 45㎬이었다. 그 이상에서는 감소하였다. 본 연구는 Ti-Si-N 코팅에서 규소첨가에 따른 박막에 형성하는 질화규소 또는 규소의 특성을 조사하기 위하여 질화규소 박막을 제조하여 그 특성 및 기계적 성질을 조사하였다. 스퍼터링 방법으로 제조한 질화규소 박막의 표면 및 내부구조를 광학현미경, 주사전자현미경, 투과전자현미경 그리고 AFM으로, 정성 및 정량을 EPMA와 EDS로, 결정성을 박막 엑스선회 절분석기로, 화학 결합구조을 XPS으로 분석하였다. 그리고 나노인덴터를 이용하여 박막의 경도와 탄성계수를 조사하였다.

• Korean Journal of Optics and Photonics
• /
• v.10 no.5
• /
• pp.369-372
• /
• 1999

We have constructed an interferometric microscopy using a Michelson interferometer and a He-Ne laser. The three dimensional image was obtained by the interference from the reflected signal by a sample surface and from the reflected signal by a mirror. The axial resolution obtained by Michelson interferometric microscopy is as good as that of the white-light interferometer, but the same fringe is obtained when optical path difference is half-wavelength. The image from Michelson interferometric microscopy was compared with the images from the various types of confocal microscopy.