U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 10376 - 10400 of 73755

Probe assisted localized doping of aluminum into silicon substrates

February 20, 2019
Author(s)
Jungjoon Ahn, Santiago D. Solares, Lin You, Hanaul Noh, Joseph Kopanski, Yaw S. Obeng
In this paper, we demonstrate AFM probe assisted deterministic doping (PADD) of Al into an n- type Si (100) wafer, to generate nanoscale counter-doped junctions with a few nanometers depth from Si surface. The local electrical potential changes resulting

Review of Fiber Optic Sensors for Structural Fire Engineering

February 20, 2019
Author(s)
Yi Bao, Ying Huang, Matthew Hoehler, Genda Chen
Reliable and accurate measurements of temperature and strain in structures subjected to fire can be difficult to obtain using traditional sensing technologies based on electrical signals. Fiber optic sensors, which are based on light signals, solve many of

A Review of Halogenated Natural Products in Arctic, Subarctic and Nordic Ecosystems

February 19, 2019
Author(s)
Terry Bidleman, Agneta Andersson, Liisa Jantunen, John Kucklick, Henrik Kylin, Robert Letcher, Mats Tysklind, Fiona Wong
Halogenated natural products (HNPs) are organic compounds containing bromine, chlorine, iodine, and sometimes fluorine. HNPs comprises many classes of compounds, ranging in complexity from halocarbons (mostly halomethanes and haloethanes) to higher

A Deep Learning-Based Weather Forecast System for Data Volume and Recency Analysis

February 18, 2019
Author(s)
Jarrett Booz, Wei Yu, Guobin Xu, David W. Griffith, Nada T. Golmie
Accurate weather forecast is important to our daily life. Through physical atmospheric models, the weather can be accurately forecasted in a short period time. To provide weather forecast, machines learning techniques can be used for understanding and

Fast quantification of nanorod geometry by DMA-spICP-MS

February 18, 2019
Author(s)
Jiaojie Tan, Yong Yang, Hind El Hadri, Mingdong M. Li, Vincent A. Hackley, Michael R. Zachariah
A fast, quantitative method for determining the geometries of nanorods (i.e., length and dimeter) is described, based on hyphenation of differential mobility analysis (DMA) with single particle inductively coupled plasma mass spectrometry (spICP-MS). Seven

Interoperability Analysis Tool for IEC 61850-9-2 Standard-based Merging Units

February 18, 2019
Author(s)
Yuyin Song, Gerald J. FitzPatrick, Kang B. Lee, Avi M. Gopstein
Interoperability test and plugfest provide a congenial environment to test and assure interoperability of power grid devices helping to achieve equipment plug and play. However, interoperability analysis and evaluation are very time-consuming and error

Performance Assessment of Smart Meter Traffic over LTE Network Using SDR Testbed

February 18, 2019
Author(s)
Amirshahram Hematian, Wei Yu, David W. Griffith, Nada T. Golmie
In the smart grid, a variety of smart meters will be deployed to support diverse services, such as energy distribution management, grid monitoring and management, and the integration of renewable energy resources. On the power distribution side, regular

Planarized process for single-flux-quantum circuits with self-shunted Nb/NbxSi1-x/Nb Josephson junctions

February 18, 2019
Author(s)
David I. Olaya, Manuel C. Castellanos Beltran, Javier Pulecio, John P. Biesecker, Soroush Khadem, Theodore Lewitt, Peter F. Hopkins, Paul D. Dresselhaus, Samuel P. Benz
We describe the single-flux-quantum (SFQ) circuit fabrication process employed at NIST's Boulder Microfabrication Facility. The process includes four superconducting metal layers, one palladium-gold resistor layer, and a contact pad layer. Chemical

Analysis of Iron in Water using a Simple LED Spectrophotometer

February 15, 2019
Author(s)
Benjamin J. Place
Access to clean water is a vitally important part of the lives of all people, yet there is often a concern about the contamination of water by heavy metals. The detection and measurement of heavy metals in water can be performed using colorimetric reagents

Extracting Linearization Equations from Noisy Sources

February 15, 2019
Author(s)
Daniel C. Smith-Tone
This note was originally written under the name "On the Security of HMFEv" and was submitted to PQCrypto 2018. The author was informed by the referees of his oversight of an eprint work of the same name by Hashimoto, see eprint article /2017/689/, that

Headspace Analysis: Purge and Trap

February 15, 2019
Author(s)
Thomas J. Bruno, Megan E. Harries
Headspace analysis is a technique for sampling and examining the volatiles in a solid or liquid sample. The term headspace refers to the volume of vapor above a condensed phase sample. Purge and trap refers to the headspace technique in which volatile

Headspace Analysis: Static

February 15, 2019
Author(s)
Thomas J. Bruno, Megan E. Harries
Headspace analysis is a technique for sampling and examining the volatiles in a solid or liquid sample. The term headspace refers to the volume of vapor above a condensed phase sample. For most headspace analyses, the sample and its associated headspace

Solvent-Pore Interactions in the Easgle Ford Shale Formation

February 15, 2019
Author(s)
Victoria H. DiStefano, Joanna McFarlane, Andrew G. Stack, Edmund Perfect, David F. Mildner, Markus Bleuel, Steve J. Chipera, Kenneth C. Littrell, Michael C. Cheshire, Katherine E. Manz, Lawrence M Anovitz
The effect of solvent extraction on pore space was examined on a suite of samples from the Eagle Ford Shale Formation with varying lithologies and maturities. Several solvents were contacted with shales, extracting the compatible organic matter. The

A General Methodology for Deriving Network Propagation Models of Computer Worms

February 14, 2019
Author(s)
Shuvo Bardhan, Douglas C. Montgomery, James J. Filliben, Nathanael A. Heckert
Externally-launched computer worms which maliciously propagate within networks are one of the most serious and dangerous security threats facing the commercial, political, military, and research community today. With an eye to the ultimate goal of

NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products

February 14, 2019
Author(s)
C Cameron Miller, Timothy Rasinski
NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products, presents the technical requirements and guidance for the accreditation of laboratories under the NVLAP Energy Efficient Lighting Products LAP. The 2018 revision aligns this handbook with the

Broadband generation of photonic spin-controlled arbitrary accelerating light beams in the visible

February 13, 2019
Author(s)
Qingbin Fan, Wenqi Zhu, Yuzhang Liang, Pengcheng Huo, Cheng Zhang, Amit Agrawal, Kun Huang, Xiangang Luo, Yanqing Lu, Chengwei Qiu, Henri Lezec, Ting Xu
Bending light along arbitrary curvatures is a captivating and popular notion, triggering unprecedented endeavors in achieving quasi-diffraction-free propagation along a curved path in free-space. Much effort has been devoted to achieving this goal in

Monitoring Fast, Voxel-Scale Cure Kinetics via Sample-Coupled-Resonance Photorheology

February 13, 2019
Author(s)
Callie I. Higgins, Lewis M. Cox, Frank W. DelRio, Jason P. Killgore
Photopolymerizable materials are the focus of extensive research across a variety of fields ranging from additive manufacturing to regenerative medicine. However, poorly understood material mechanical and rheological properties during polymerization at the

Porous Zero-Mode Waveguides for Picogram-Level DNA Capture

February 13, 2019
Author(s)
Vivek Jadhav, David Hoogerheide, Jonas Korlach, Meni Wanunu
We have recently shown that nanopore zero-mode waveguides are effective tools for capturing picogram levels of long DNA fragments for single-molecule DNA sequencing. Despite these key advantages, manufacturing of large arrays is not practical due to the
Displaying 10376 - 10400 of 73755
Was this page helpful?