• 제목/요약/키워드: confocal microscopy

검색결과 436건 처리시간 0.035초

Super-continuum generation 현상을 이용한 Solid-immersion lens 기반 공초점 현미경 (Solid-immersion lens based confocal microscopy using super-continuum generation effect)

  • 이원섭;문형배;임건;최국종;박노철
    • 정보저장시스템학회논문집
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    • 제11권2호
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    • pp.22-25
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    • 2015
  • In this paper, we demonstrate solid-immersion lens based confocal microscopy using super-continuum generation effect. Using super-continuum generation effect, we could diversify the excitation wavelength of confocal microscopy. Further, high refractive index of solid-immersion lens would increase the resolution of confocal microscopy. As a result, by applying the super-continuum generation effect and solid-immersion lens to confocal microscopy, some problems of confocal fluorescent microscopy, the excitation wavelength and the resolution, could be overcome. To verify it, we made home-built solid-immersion lens based confocal microscopy using super-continuum generation effect, and evaluate the performance of the system.

Confocal Microscopy of Colloidal Suspensions

  • Kim, Jin Young;Weon, Byung Mook
    • Applied Microscopy
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    • 제44권1호
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    • pp.30-33
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    • 2014
  • Colloidal systems or colloids consist of microparticles or nanoparticles (solute) uniformly suspended in a liquid (solvent), also called colloidal suspensions. They can mimic and exhibit microscopic or atomic aspects of molecular and atomic systems. They have been increasingly studied because of their similarity with atomic systems. They can be microscopically observed by optical microscopes because they are large enough in size and slow in motion to be monitored; microscopic methods are very useful and powerful in research on colloidal systems. Recently, confocal laser microscopy has been known as a powerful tool to obtain information of real-space and real-time behaviors of colloidal suspensions. In particular, it is possible to exactly track individual colloids in three dimensions with confocal microscopy. In this article, we briefly discuss the usefulness of confocal microscopy in colloidal systems that are currently used as model systems to resolve important questions in materials science.

초소형 공초점 현미경의 제작과 금속의 구조 측정 (Measurement of metal materials structure by using the manufactured Scanning Confocal Microscopy)

  • 서명희;김종배;권남익
    • 한국정밀공학회지
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    • 제25권11호
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    • pp.52-57
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    • 2008
  • We demonstrate the operation of an apparatus that we call the laser scanning confocal microscopy. It is valuable tool of the investigations for imaging process. We measured the thin metal structure through the SCM manufacture. Confocal microscopy offers several advantages including shallow depth of field, elimination of out-of-focus glare, and the ability to collect serial optical sections from thick specimens than conventional optical microscope. This research is manufactured of scanning confocal microscopy and after measured of metal materials structure.

Visualization of Epidermis and Dermal Cells in ex vivo Human Skin Using the Confocal and Two-photon Microscopy

  • Choi, Sang-Hoon;Kim, Wi-Han;Lee, Yong-Joong;Lee, Ho;Lee, Weon-Ju;Yang, Jung-Dug;Shim, Jong-Won;Kim, Jin-Woong
    • Journal of the Optical Society of Korea
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    • 제15권1호
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    • pp.61-67
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    • 2011
  • The confocal laser scanning microscopy and two-photon microscopy was implemented based on a single laser source and an objective lens. We imaged and compared the morphology of identical sites of ex vivo human skin using both microscopes. The back-scattering emission from the sample provided the contrast for the confocal microscopy. The intrinsic autofluorescence and the second harmonic generation were used as the luminescence source for the two-photon microscopy. The wavelength of the Ti:Sapphire laser was tuned at 710 nm, which corresponds to the excitation peak of NADH and FAD in skin tissue. The various cell layers in the epidermis and the papillary dermis were clearly distinguished by both imaging modalities. The two-photon microscopy more clearly visualized the intercellular region and the nucleus of the cell compared to the confocal microscopy. The fibrous structures in the dermis were more clearly resolved by the confocal microscopy. Numerous cells in papillary dermal layer, as deep as $100\;{\mu}m$, were observed in both CLSM and two-photon microscopy. While most previous studies focused on fibrous structure imaging (collagen and elastin fiber) in the dermis, we demonstrated that the combined imaging with the CLSM and two-photon microscopy can be applied for the non-invasive study of the population, distribution and metabolism of papillary dermal cells in skin.

Investigation of Layered Structure of Fiber Cell Wall in Korean Red Pine by Confocal Reflection Microscopy

  • Kwon, Ohkyung
    • Applied Microscopy
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    • 제44권2호
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    • pp.61-67
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    • 2014
  • Layered structures of fiber cell wall of Korean red pine (Pinus densiflora) were investigated by confocal reflection microscopy (CRM). CRM micrographs revealed detailed structures of the fiber cell wall such as S1, S2, and S3 layers as well as transition layers (S12 and S23 layers), which are present between the S1, S2, and S3 layers. Microfibril angle (MFA) measurement was possible for the S2 and S3 layer in the cell wall. The experimental results suggest that CRM is a versatile microscopic method for investigation of layered structures and MFA measurement in individual sub layer of the tracheid cell wall.

Intravital Laser-scanning Two-photon and Confocal Microscopy for Biomedical Research

  • Moon, Jieun;Kim, Pilhan
    • Medical Lasers
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    • 제10권1호
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    • pp.1-6
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    • 2021
  • Intravital microscopy is a high-resolution imaging technique based on laser-scanning two-photon and confocal microscopy, which allows dynamic 3D cellular-level imaging of various biological processes in a living animal in vivo. This unique capability allows biomedical researchers to directly verify a hypothesis in a natural in vivo microenvironment at the cellular level in a physiological setting. During the last decade, intravital microscopy has become an indispensable technique in several fields of biomedical sciences such as molecular and cell biology, immunology, neuroscience, developmental, and tumor biology. The most distinct advantage of intravital microscopy is its capability to provide a longitudinal view of disease progression at the cellular-level with repeated intravital imaging of a single animal over time by saving the images after each session.

Measurement of the Internal Structure of an Optical Waveguide Embedded in a Flexible Optical Circuit Board by Enhancing the Signal Contrast of a Confocal Microscope

  • Lee, Won-Jun;Kim, Dae-Chan;O, Beom-Hoan;Park, Se-Geun;Lee, El-Hang;Lee, Seung-Gol
    • Journal of the Optical Society of Korea
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    • 제15권1호
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    • pp.9-14
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    • 2011
  • In this study, the internal structure of an optical waveguide embedded in a flexible optical circuit board is observed with a confocal microscope. In order to increase the light reflection from an internal material interface with a very small index difference, and thus enhance the signal contrast, a theta microscopy scheme has been integrated into a conventional confocal microscope, and a high NA oil-immersion lens has been used. The interface reflectivity is increased from roughly 0.0015% to 0.025% by the proposed method, and the internal structure can thus be successfully measured.

Displacement measurement sensor using astigmatic confocal technology

  • J.W. Seo;D.K. Kang;Lee, J.H.;Kim, D.M.;D.G. Gweon
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2001년도 ICCAS
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    • pp.163.2-163
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    • 2001
  • Confocal scanning microscopy (CSM) has been reported as an excellent method using the optical probe in scanning probe microscopy (SPM). Transmission or reflection confocal scanning microscopy (TCSM, RCSM) has been used in the three-dimensional reconstruction of specimen or the non-destructive measurement in vivo. The axial movement of the primary focal point having the information of specimen gives a good measurement performance with the great sensitivity. Application of the confocal theory and astigmatism to displacement measurement sensor uses the aperture as the pinhole or slit after collecting lens relating to confocal response in non-contact measurement; and astigmatic lens using four-segments detector as short-range sensor, long-range one combining the grating and rotary one hating the rotary directional grating. The aperture type can play an ...

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형광 공초점 주사 현미경의 측정 강도 향상을 위한 반사 광학계의 제안 및 설계 (Proposal and design of reflecting optical system to improve detection intensity in fluorescence confocal scanning microscopy)

  • 강동균;서정우;권대갑
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 춘계학술대회 논문집
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    • pp.187-190
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    • 2002
  • Confocal microscopy is very popular technology in bio-medical inspection due to its ability to reject background signals and to measure very thin slide of thick specimens, which is called optical sectioning. But intensity of detected signal in fluorescence type confocal microscopy is so small that only 0.2% of emitted fluorescence light can be detected in the best case. In this paper, we proposed the reflecting optical system to improve the detection intensity and designed the optical system by optimal design method. At the end of the paper, we analyzed the characteristics of the proposed reflecting optical system.

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Confocal Scanning Laser Microscope (CSLM)을 이용한 신규 미백 효과 측정 연구 (New Measurement of Whitening Effects by Using Confocal Scanning Laser Microscope (CSLM))

  • 김명기;조석철;남개원
    • 대한화장품학회지
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    • 제41권3호
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    • pp.279-285
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    • 2015
  • 여성의 얼굴에 과색소침착이 발생하는 것은 불안감, 특히 미적인 요소에 있어서 많은 고민을 유발한다. 피부의 흑화는 자외선(UV)에 대하여 이를 방어하기 위한 기작으로 멜라닌의 양과 밀접한 관계가 있다. 이러한 피부의 구성성분을 관찰하기 위해, confocal scanning laser microscope (CSLM)은 피부에 직접 현미경 검사를 실시하여 어떠한 조직의 변화 없이 피부를 실시간으로 관찰할 수 있는 비침습적 이미지 장치이다. 본 연구에서는 자외선 조사를 통해 유도된 하박 내측 피부의 과색소침착을 유도하여, 다른 피부색을 평가하는 측정기기와 상관성을 분석하여, CSLM을 이용한 새로운 미백 평가방법을 제시하였다. CSLM을 활용한 미백 효능 평가법은 소비자가 보다 이해하기 쉽도록 미백 제품을 평가하는데 유용할 것으로 생각된다.