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Certification of SRM1960: Nominal 10 μm Diameter Polystyrene Spheres (“Space Beads”)
Experimental, theoretical, and calculational details are presented for the three independent micrometrology techniques used to certify the mean diameter of Standard Reference Materisd 1960, nominalExpand
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Development of a one-micrometer-diameter particle size Standard Reference Material
Accepted: October 11, 1984 The average diameter of the first micrometer particle size standard (Standard Reference Material 1690), an aqueous suspension of monosized polystyrene spheres with aExpand
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Comparison Of Linewidth Measurements On An Sem/Interferometer System And An Optical Linewidth-Measuring Microscope
In the current linewidth-measurement program at the National Bureau of Standards, the primary measurement of micrometer-wide lines on black-chromium artifacts is made with an interferometer locatedExpand
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Certification of NIST SRM 1961: 30 μm Diameter Polystyrene Spheres
This report describes the certification of SRM 1961, an NIST Standard Reference Material for particle diameter. It consists of an aqueous suspension of monosize 30 μm diameter polystyrene spheres.Expand
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Viscosities of acacia and sodium alginate after sterilization by cobalt-60.
Acacia and sodium alginate powders were sterilized by cobalt-60 irradiation to a total dose of 2.5 Mrad with no increase in residual radioactivity of the gums as a result of the treatment. ViscosityExpand
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Calibration of the NBS 10-μm “space beads”
Abstract A summary of the procedures used to certify NBS Standard Reference Material 1960, nominal 10-μm “space beads,” is presented. Three independent micrometrology techniques were used, with theExpand
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Proposed Image Space Scanner with Reduced Off-Axis Defocusing
Image space scanners are often avoided because of off-axis defocus problems. However, there are areas where their application would be useful: when the object distance is small (microscopes), or theExpand
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A Non-Contacting Length Comparator with 10 Nanometer Precision
A non-contacting length comparator utilizing two specially designed photo-electric micro-scopes has been constructed. Performance tests of this comparator, using lapped and polished steel surfacesExpand
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Investigations in array sizing 3. The center distance finding technique
Abstract A new technique (called Center Distance Finding, or CDF) is described to find the mean size and size distribution of monosize microspheres, using optical microscope. Two-dimensionalExpand
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Certification of NIST SRM 1962: 3 μm Diameter Polystyrene Spheres
This report describes the certification of SRM 1962, a NIST Standard Reference Material for particle diameter. It consists of an aqueous suspension of monosize 3 (μm polystyrene spheres. TwoExpand
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