Fiber Optics. Part II. Image Transfer on Static and Dynamic Scanning with Fiber Bundles

Resonance ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 1589-1594
Author(s):  
Jasjeet Singh Bagla
Keyword(s):  
Fiber Optics ◽  
Fiber Bundles ◽  
Image Transfer ◽  
Dynamic Scanning

Real-Time Electron Diffraction. Part III: Image Transfer via Fiber Optics

1989 ◽  
Vol 43 (3) ◽  
pp. 415-419 ◽  
Author(s):  
John D. Ewbank ◽  
David W. Paul ◽  
Lothar Schäfer ◽  
Reza Bakhtiar
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Fiber Optics ◽  
Fiber Optic ◽  
Image Transfer ◽  
Time Data ◽  
Mean Amplitudes Of Vibration ◽  
Structure Determinations ◽  
Photodiode Array ◽  
First Time

Improvements are described in photodiode-array real-time data recording for gas electron diffraction (GED). When the conventional glass window and lens optics in a previously reported detector configuration are replaced by fiber optic components, two significant effects arise: (1) detector gain is enhanced to the extent that it is now possible to detect nanoliter samples in combined GED-GC (gas chromatography) experiments, and (2) for the first time since the development of the real-time recording scheme, molecular mean amplitudes of vibration are within error limits of literature values. Thus the method now affords full molecular structure determinations, including bond distances and angles, and their associated mean vibrational properties.

Fiber Optics VII Image Transfer from Lambertian Emitters*

1961 ◽  
Vol 51 (1) ◽  
pp. 23 ◽  
Author(s):  
N. S. Kapany ◽  
D. F. Capellaro
Keyword(s):  
Fiber Optics ◽  
Image Transfer

Observation of plant roots in situ

1971 ◽  
Vol 49 (10) ◽  
pp. 1850-1852 ◽  
Author(s):  
J. Waddington
Keyword(s):  
Fiber Optics ◽  
Fiber Bundle ◽  
Small Diameter ◽  
Root Penetration ◽  
Image Transfer ◽  
Transparent Plastic ◽  
Plastic Tube ◽  
Made In

A technique is described which permits the determination of root penetration, distribution, and density with minimal disturbance to the plant. A small diameter tunnel is made in the soil and fitted tightly with a glass or transparent plastic tube. A fiber optics probe is used to observe the arrival of roots at the wall of the tube at various depths and to estimate their distribution and density. The probe consists of a light source and fiber bundle for illumination, a coherent fiber bundle for image transfer to the surface, a right angle viewing attachment at the objective end, and adjustable lenses.

Dynamic Scanning Electron Microscopy of Small Particles

1975 ◽  
Vol 33 ◽  
pp. 280-281
Author(s):  
W. Krakow ◽  
W. C. Nixon
Keyword(s):  
Electron Microscopy ◽  
Low Noise ◽  
Time Sequence ◽  
Field Of View ◽  
Video Tape ◽  
Small Particles ◽  
Polystyrene Spheres ◽  
Field Distributions ◽  
Dynamic Scanning ◽  
Scanning Electron

The scanning electron microscope (SEM) can be run at television scanning rates and used with a video tape recorder to observe dynamic specimen changes. With a conventional tungsten source, a low noise TV image is obtained with a field of view sufficient to cover the area of the specimen to be recorded. Contrast and resolution considerations have been elucidated and many changing specimens have been studied at TV rates.To extend the work on measuring the magnitude of charge and field distributions of small particles in the SEM, we have investigated their motion and electrostatic interaction at TV rates. Fig. 1 shows a time sequence of polystyrene spheres on a conducting grating surface inclined to the microscope axis. In (la) there are four particles present in the field of view, while in (lb) a fifth particle has moved into view.

Dupuytren's Contracture and Microvessels

1981 ◽  
Vol 39 ◽  
pp. 470-471
Author(s):  
C. W. Klscher ◽  
D. Speer
Keyword(s):  
Hypertrophic Scar ◽  
Active Form ◽  
Scar Tissue ◽  
Vascular Supply ◽  
Fiber Bundles ◽  
Dupuytren’S Contracture ◽  
Palmar Fascia ◽  
Immune Disease ◽  
Dupuytren's Contracture ◽  
Longitudinal Fiber

Dupuytren's Contracture is a nodular proliferation of the longitudinal fiber bundles of palmar fascia with its attendant contraction. The factors attributed to its etiology have included trauma, diabetes, alcoholism, arthritis, and auto-immune disease. The tissue has been observed by electron microscopy and found to contain myofibroblasts.Dupuytren's Contracture constitutes a scar, and as such, excessive collagen can be observed, along with an active form of fibroblast.Previous studies of the hypertrophic scar have led us to propose that integral in the initiation and sustenance of scar tissue is a profusion of microvascular regeneration, much of which becomes and remains occluded producing a hypoxia which stimulates fibroblast synthesis. Thus, when considering a study of Dupuytren's Contracture, we predicted finding occluded microvessels at or near the fascial scarring focus.Three cases of Dupuytren's Contracture yielded similar specimens, which were fixed in Karnovskys fluid for 2 to 20 days. Upon removal of the contracture bands care was taken to include the contiguous fatty and areolar tissue which contain the vascular supply and to identify the junctional area between old and new fascia.

Ultrastructural Features of the Oral Apparatus of Stentor

1976 ◽  
Vol 34 ◽  
pp. 142-143
Author(s):  
Elizabeth F. Howell
Keyword(s):  
Plasma Membrane ◽  
Osmium Tetroxide ◽  
Buccal Cavity ◽  
Fiber Bundles ◽  
Microtubular Root ◽  
Stentor Coeruleus ◽  
Root Fiber

The ultrastructure of the normal oral apparatus of Stentor has not been extensively studied. I report here on the ultrastructure of the buccal cavity of Stentor coeruleus.Stentor coeruleus was fixed in either a buffered mixture of osmium tetroxide and glutaraldehyde, or in buffered glutaraldehyde alone. Cells were then dehydrated and embedded in a mixture of Epon and Araldite.An extensive adoral zone of membranelles surrounds the anterior of the cell, and each membranelle consists of 2 parallel rows of cilia. These extend down into the buccal cavity. Two microtubular root fibers, or nemadesmata (Figs. 2 and 5), extend deeply into the cytoplasm from the base of each ciliary kinetosome. Mitochondria are usually closely associated with the root fiber bundles, and small vesicles are present between the nemadesmata of adjacent kinetosomes (Fig. 5). In the cytopharyngeal, non-ciliated areas of the buccal cavity, microtubular ribbons which extend into the cytoplasm are aligned perpendicular to the plasma membrane of the buccal cavity (Figs. 1 and 2).

Designing high-resolution slow scan CCD-based TEM camera systems

1992 ◽  
Vol 50 (2) ◽  
pp. 946-947
Author(s):  
James F. Mancuso ◽  
William B. Maxwell ◽  
Russell E. Camp ◽  
Mark H. Ellisman
Keyword(s):  
Fiber Optics ◽  
Ccd Camera ◽  
High Energy ◽  
Phosphor Layer ◽  
X Ray ◽  
Light Production ◽  
Camera Systems ◽  
X Ray Imaging ◽  
Electron Image ◽  
Scintillating Fiber

The imaging requirements for 1000 line CCD camera systems include resolution, sensitivity, and field of view. In electronic camera systems these characteristics are determined primarily by the performance of the electro-optic interface. This component converts the electron image into a light image which is ultimately received by a camera sensor.Light production in the interface occurs when high energy electrons strike a phosphor or scintillator. Resolution is limited by electron scattering and absorption. For a constant resolution, more energy deposition occurs in denser phosphors (Figure 1). In this respect, high density x-ray phosphors such as Gd2O2S are better than ZnS based cathode ray tube phosphors. Scintillating fiber optics can be used instead of a discrete phosphor layer. The resolution of scintillating fiber optics that are used in x-ray imaging exceed 20 1p/mm and can be made very large. An example of a digital TEM image using a scintillating fiber optic plate is shown in Figure 2.

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