منابع مشابه
Voltage Contrast and EBIC Failure Isolation Techniques
Failure analysis challenges have increased as electronic circuit capability and complexity of integrated circuits evolve to higher densities and smaller feature sizes. Despite this evolution, “old school” tools can be effective in solving problems on both simple and complex devices. In particular, when Voltage Contrast (VC) and Electron Beam Induced Current (EBIC) are combined together results ...
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متن کاملImaging Quality Evaluation of Low Tube Voltage Coronary CT Angiography Using Low Concentration Contrast Medium
PURPOSE To compare the image quality of prospectively ECG-gated low voltage coronary computed tomography angiography (CTA) with an administration of low concentration contrast medium. METHOD AND MATERIALS A total of 101 patients, each with a heart rate below 65 beats per minute (BPM), underwent a prospectively ECG-gated axial scan in CT coronary angiography on a 64-slice CT scanner. All patie...
متن کاملVoltage-gated sodium channels improve contrast sensitivity of a retinal ganglion cell.
Voltage-gated channels in a retinal ganglion cell are necessary for spike generation. However, they also add noise to the graded potential and spike train of the ganglion cell, which may degrade its contrast sensitivity, and they may also amplify the graded potential signal. We studied the effect of blocking Na+ channels in a ganglion cell on its signal and noise amplitudes and its contrast sen...
متن کاملAtomic resolution phase contrast imaging and in-line electron holography using variable voltage and dose rate Brief title: Low dose rate/voltage HRTEM
The TEAM 0.5 electron microscope is employed to demonstrate atomic resolution phase contrast imaging and focal series reconstruction with acceleration voltages between 20 and 300 kV and a variable dose rate. A monochromator with an energy spread of ≤0.1eV is used for dose variation by a factor of 1,000 and to provide a beam-limiting aperture. The sub-Ångstrøm performance of the instrument remai...
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ژورنال
عنوان ژورنال: Le Journal de Physique IV
سال: 1991
ISSN: 1155-4339
DOI: 10.1051/jp4:1991640