Dimensional metrology

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class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/news-events/news/2022/09/back-future-gear-edition" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/09/12/little-artifact.png?itok=r2BeSkUN" width="100" height="63" alt="artifact" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/news-events/news/2022/09/back-future-gear-edition"><span property="schema:name">Back to the Future: Gear Edition</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-09-12T12:00:00Z">September 12, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> As mechanical objects, gears have been around for so long that people may take them for granted. But gears are sophisticated parts that play a vital role in </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2021/12/sneezes-rain-clouds-and-ink-jets-nist-improves-ability-optical-microscopes" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/news-events/news/2021/12/sneezes-rain-clouds-and-ink-jets-nist-improves-ability-optical-microscopes" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2021/12/20/microdroplets_final%20copy.jpg?itok=Xr_JnIbm" width="78" height="100" alt="microdroplets illustration" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/news-events/news/2021/12/sneezes-rain-clouds-and-ink-jets-nist-improves-ability-optical-microscopes"><span property="schema:name">Sneezes, Rain Clouds and Ink Jets: NIST Improves the Ability of Optical Microscopes to Measure the Volume of Microdroplets</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2021-12-20T12:00:00Z">December 20, 2021</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> Sneezes, rain clouds, and ink jet printers: They all produce or contain liquid droplets so tiny it would take several billion of them to fill a liter bottle </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2021/03/good-it-gets-nist-develops-its-fourth-generation-wire-micrometer-rivals" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/news-events/news/2021/03/good-it-gets-nist-develops-its-fourth-generation-wire-micrometer-rivals" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2021/03/11/micrometer.png?itok=vddr2woX" width="100" height="57" alt="NIST micrometer" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/news-events/news/2021/03/good-it-gets-nist-develops-its-fourth-generation-wire-micrometer-rivals"><span property="schema:name">As Good as it Gets: NIST Develops Its Fourth Generation Wire Micrometer that Rivals Best in the World</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2021-03-11T12:00:00Z">March 11, 2021</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> Researchers at the National Institute of Standards and Technology (NIST) have developed a dramatically improved laser-based instrument that measures the </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20240120075901/https://www.nist.gov/news-events/news-updates/topic/249066">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> </div> <div class="grid-container margin-y-4"> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Projects and Programs</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-0df58146c741745d1f3c1fae86d124fc7445d8e6503e1c5c0d4dc9861381cf9c"> <div> <article about="/programs-projects/advanced-dimensional-measurement-systems" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/programs-projects/advanced-dimensional-measurement-systems" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2018/07/10/tracker.jpg?itok=HuE2NGh_" width="100" height="60" alt="Laser tracker calibration in Tape Tunnel Facility" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/programs-projects/advanced-dimensional-measurement-systems"><span>Advanced Dimensional Measurement Systems</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> The Advanced Dimensional Measurement Systems (ADMS) project provides the measurement science and infrastructure needed by industry to adopt new dimensional </div> </div> </div> </article> </div> <div> <article about="/programs-projects/am-machine-and-process-qualification" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/programs-projects/am-machine-and-process-qualification"><span>AM Machine and Process Qualification</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> Machines and processes used to produce critical components for defense, aerospace, and medical applications must first be formally qualified. While </div> </div> </div> </article> </div> <div> <article about="/programs-projects/data-integration-and-management-additive-manufacturing" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/programs-projects/data-integration-and-management-additive-manufacturing"><span>Data Integration and Management for Additive Manufacturing</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> AM data is essential for establishing part traceability, understanding AM processes and making decisions during the product development lifecycle. The curation </div> </div> </div> </article> </div> <div> <article about="/programs-projects/si-length-and-traceability" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/programs-projects/si-length-and-traceability" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/pml/div683/grp01/block_1.jpg?itok=ogabrRVu" width="100" height="86" alt="block" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/programs-projects/si-length-and-traceability"><span>SI Length and Traceability</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> To enable our highest accuracy calibrations and NIST advanced research efforts, we maintain and develop methods to provide traceability to the meter via laser </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20240120075901/https://www.nist.gov/laboratories/projects-programs/topic/249066">View All Projects/Programs</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Publications</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-d60714cc62b806bc4c8b1b28f56a098c06404d72277e7054d035e354d2479b33"> <div> <article about="/publications/conversion-piston-cylinder-dimensional-dataset-effective-area-mechanical-pressure" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/publications/conversion-piston-cylinder-dimensional-dataset-effective-area-mechanical-pressure"><span>Conversion of a piston--cylinder dimensional dataset to the effective area of a mechanical pressure generator</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-20T12:00:00Z">December 20, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Patrick Egan</span>, <span class="nist-author">Eric S. Stanfield</span>, <span class="nist-author">John R. Stoup</span>, <span class="nist-author">Christopher W. Meyer</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Recent developments in diameter metrology at NIST have improved the dimensional characterization of piston鈥揷ylinder assemblies (PCAs) to unprecedented precision </div> </div> </div> </article> </div> <div> <article about="/publications/expansivity-fused-quartz-glass-measured-within-6-x-10-10-k" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/publications/expansivity-fused-quartz-glass-measured-within-6-x-10-10-k"><span>Expansivity of fused quartz glass measured within 6 x 10^-10 /K</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-20T12:00:00Z">December 20, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Patrick Egan</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Thermal expansion sometimes dominates uncertainty in a precision measurement. A cell-based refractometer has been designed at NIST which targets 10^-6 relative </div> </div> </div> </article> </div> <div> <article about="/publications/robotic-antenna-measurements" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/publications/robotic-antenna-measurements"><span>Robotic Antenna Measurements</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-11T12:00:00Z">December 11, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Josh Gordon</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Robots excel at manipulating objects with 6 degree of freedom movement. A combination of well-defined kinematics, optimized control loops, and robust mechanical </div> </div> </div> </article> </div> <div> <article about="/publications/laser-tracker-relative-range-error-evaluation-back-back-common-path-single-pass-and" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/publications/laser-tracker-relative-range-error-evaluation-back-back-common-path-single-pass-and"><span>Laser tracker relative range error evaluation by the back-to-back, common path single pass, and common path double pass methods</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-08-16T12:00:00Z">August 16, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item">Marcos Motta de Souza, <span class="nist-author">Bala Muralikrishnan</span>, <span class="nist-author">Vincent Lee</span>, <span class="nist-author">Daniel S. Sawyer</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The Dimensional Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) has a unique 60 m long length facility that provides </div> </div> </div> </article> </div> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Tools and Instruments</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-3573acf8bbad657a6785097a4c383460664f6d7b410b5610f19719739fd4be22"> <div> <article about="/laboratories/tools-instruments/laser-doppler-vibrometer-microscope" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/laboratories/tools-instruments/laser-doppler-vibrometer-microscope" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/04/28/2010_LDV_DSC_3184.jpg?itok=H84pvKTh" width="100" height="84" alt="Laser Doppler Vibrometer located in 218/D012 (Group 643.09)" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/laboratories/tools-instruments/laser-doppler-vibrometer-microscope"><span>Laser Doppler Vibrometer Microscope</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Since 2006, the Nanomechanical Properties Group has pioneered the use of Laser Doppler Vibrometry (LDV) to calibrate the stiffness of AFM cantilevers using the </div> </div> </div> </article> </div> <div> <article about="/laboratories/tools-instruments/precision-imaging-facility" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20240120075901/https://www.nist.gov/laboratories/tools-instruments/precision-imaging-facility" hreflang="en"><img loading="lazy" src="/web/20240120075901im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2018/04/17/pifintrofig.png?itok=1bJjDrE0" width="61" height="100" alt="Examples of work in the Precision Imaging Facility.聽 (a) STEM image of a crack (dislocation) formed during growth of an AlGaN shell around a GaN nanowire, and (b) FIB fabrication of an AFM tip with a GaN nanowire contact point." typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20240120075901/https://www.nist.gov/laboratories/tools-instruments/precision-imaging-facility"><span>Precision Imaging Facility</span> </a></h3> </header> <div 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