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Projects/Programs

Topic Area
Displaying 726 - 750 of 1669

Integrated Photonics

Ongoing
The Integrated Photonics Project utilizes heterogeneous materials integration to demonstrate novel optoelectronic devices such as semiconductor lasers, wavelength converters, and polarization rotators with compact form. We use materials including silicon, silicon dioxide, tantalum pentoxide, and...

Integrated Testbeds for Advanced Metrology

Ongoing
Crossbar Memory Arrays An especially prolific structure in memory architectures aimed at accelerating neural network operation is the crossbar array (Fig. 1). We produce medium-scale arrays that hold up to 20,000 nanodevices which can be characterized, read from, and written to individually or in...

Integrating Mass Spectrometry Techniques into Radionuclide Metrology

Ongoing
A core mission of the Radioactivity group—radionuclide metrology—is to develop and apply methods to precisely determine the activity (Bq) or massic activity (Bq/g) of a sample. We use primary activity measurement methods to ensure traceability to the SI [1]. Activity ( A) can be expressed as a...

Intelligent Building Agents

Completed
Objective Demonstrate the feasibility of AI control techniques for reducing the energy costs of HVAC systems in commercial buildings and create a research infrastructure, the Intelligent Building Agents Laboratory (IBAL), suitable for ongoing demonstration, development, and evaluation of advanced AI...

Interdomain Distance Measurements of Monoclonal Antibodies

Ongoing
Through collaboration with researchers at the Institute for Biotechnology and Bioscience Research (IBBR), we have created a library of site-specific spin-labeled and stable isotope-labeled binding partner proteins for the NIST monoclonal antibody (NISTmAb) reference material ( RM8671). Using pulsed...

Interfacial thermodynamics of 2D-materials-based nanofluidic systems

Ongoing
Recent experiments have demonstrated that atomically symmetric sub-nanoscale pores can be fabricated in graphene, hexagonal boron nitride, molybdenum disulfide (MoS 2), as well as in other 2D materials. This development provides an intriguing bridge between nanofluidics and coordination chemistry, a...

Interferometry: Quantum Error Coding in a 4-Blade Neutron Interferometer

Completed
Single crystal neutron interferometers are extremely sensitive to environmental noise, including vibrations. This sensitivity is a result of slow neutron velocity and the long measurement times. Most neutron interferometers require vibration isolation. Usually, massive systems are employed to damp...

Interferometry: Studying Quantum Materials using Neutron Interferometry

Ongoing
Neutron interferometry using perfect-silicon single crystals is a precision measurement technique that combines the neutron’s unique quantum nature with the neutron’s diverse set of interactions. Interferometry has traditionally been used in fundamental physics applications. However, there is...

Interferometry: Three-Dimensional Visualization of Magnetic Skyrmions

Ongoing
Magnetic Skyrmions are localized regions in a material where the atomic spins exhibit a defect swirling pattern (topological change equal to one). Skyrmions are unique because they behave like tiny, stable particles and require only ultralow current densities to manipulate. This makes them ideal...

International Comparisons for Chemical Measurements

Ongoing
International agreements and decisions concerning trade and our social well-being increasingly require mutual recognition of measurements and tests among nations. The Mutual Recognition Arrangement (MRA) on national measurement standards and calibration and measurement certificates issued by NMIs...

International System of Units (SI)

Ongoing
Members of the Fundamental Constants Data Center (FCDC) participate in meetings of the Consultative Committee for Units (CCU) which advises the International Committee for Weights and Measures on matters concerning the SI. The latest meeting of the CCU, held at the BIPM in June of 2013 was attended...

Internet Infrastructure Protection

Ongoing
In the FY 2016 ITL staff made significant contributions in the design, standardization, test and measurement of technologies to improve the security and robustness of the Internet’s global routing protocol BGP. NIST staff are key contributors to Internet Engineering Task Force (IETF) standards to...

Inter-Network Mobility Management

Ongoing
The Middle Class Tax Relief and Job Creation Act of 2012 (H.R. 3630) appropriated $7 billion for the establishment of a nationwide interoperable public safety broadband network under FirstNet, an independent authority in the National Telecommunications and Information Administration (NTIA). FirstNet...

Ion Mobility Spectrometry

Ongoing
IMS employs a drift tube with an applied electric field to separate ionized molecules based on their mobility. The technique is robust and capable of differentiating a wide range of drug and explosive molecules. Recent work has sought to investigate the utility of IMS for screening of illicit...

Ion Traps

Ongoing
Trapped ions are sensitive to electric-field noise from trap-electrode surfaces. This noise has been an obstacle to progress in trapped-ion quantum information processing (QIP) experiments for more than a decade. It causes motional heating of the ions, and thus quantum-state decoherence. This...
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