NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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 34051 - 34075 of 73697

Performance of a C 60 + Ion Source on a Dynamic SIMS Instrument

July 1, 2006
Author(s)
Albert J. Fahey, John G. Gillen, P Chi, Christine M. Mahoney
An IonOptika [1] C60+ ion source has been fitted onto a CAMECA [1] ims-4f. Stable ion beams of C60+ and C602+ have been obtained with typical currents approaching 20 nA under conditions that allow for several days of source operation. The beam has been

Proceedings of the Static Analysis Summit

July 1, 2006
Author(s)
Paul E. Black, Helen Gill, W. E. Martin, Elizabeth N. Fong
This is the proceeding of a summit held in June 2006 at the National Institute of Standards and Technology (NIST). This Static Analysis Summit is one of a series of meetings in the NIST Software Assurance Measurement and Tool Evaluation (SAMATE) project

Recovering Circles and Spheres from Point Data

July 1, 2006
Author(s)
Christoph J. Witzgall, Geraldine Cheok, Anthony J. Kearsley
Methods for fitting circles and spheres to point sets are discussed. LADAR (LAser Detection And Ranging) scanners, in particular, are capable of generating "point clouds" containing the x, y, z coordinates of up to several millions of points reflecting the

SIMS Depth Profiling of Polymer Blends With Protein Based Drugs

July 1, 2006
Author(s)
Christine M. Mahoney, J Yu, Albert J. Fahey, J Gardella
The use of SF5+ cluster ions for depth profiling has been successful for polymer-drug mixtures and polymer blends. This study reports results of the surface and in-depth characterization of two component blend films of poly(L-lactic acid) (PLLA) and

The Film Boiling Reactor: A New Environment for Chemical Processing

July 1, 2006
Author(s)
Bryan J. Urban, Charles T. Avedisian, Wing Tsang
A new platform, based on film boiling, is described for chemical processing by catalytic decomposition of organic liquids. A model for conversion of pure methanol to hydrogen and carbon monoxide is used to illustrate the operational and performance

The Seventh Intercomparison of Josephson Voltage Standards in North America

July 1, 2006
Author(s)
Yi-hua D. Tang, Clark A. Hamilton, David Deaver, Harold Parks, Barry Wood
The 7th Interlaboratory comparison (ILC) of Josephson Voltage Standards (JVS) at 10 V is sponsored by the National Conference of Standard Laboratories International (NCSLI) and took place from April to October 2005 with 15 participating labs. NIST's

Time Signal Stations

July 1, 2006
Author(s)
Michael A. Lombardi
A review article that looks at the history of time signal stations, beginning with the first radio experiments in the 1890's and continuing to the present day. It discusses both shortwave time signal stations, best known for their voice announcements of

Transition From Direct Tunneling to Field Emission in Metal-Molecule-Metal Junctions

July 1, 2006
Author(s)
J M. Beebe, BongSoo Kim, John William Gadzuk, C D. Frisbie, James G. Kushmerick
Current-voltage measurements of metal-molecule-metal tunnel junctions formed from p-conjugated thiols exhibit an inflection point on a plot of ln(I/V2) against 1/V, consistent with a transition in tunneling barrier shape from trapezoidal to triangular. The

A Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing

June 30, 2006
Author(s)
Signe Seidelin, J Chiaverini, Rainer Reichle, John J. Bollinger, Dietrich G. Leibfried, Joseph W. Britton, Janus Wesenberg, Brad R. Blakestad, John D. Jost, David Hume, C. Langer, R Ozeri, Nobuyasu Shiga, David J. Wineland
We demonstrate confinement of individual atomic ions in an RF Paul trap with novel geometry where the electrodes are located in a single plane and the ions confined above this plane. This device is realized with a simple fabrication procedure and has

A Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing

June 30, 2006
Author(s)
Signe Seidelin, J Chiaverini, Rainer Reichle, John J. Bollinger, Dietrich G. Leibfried, Joseph W. Britton, Janus Wesenberg, Brad R. Blakestad, John D. Jost, David Hume, C. Langer, R Ozeri, Nobuyasu Shiga, David J. Wineland
We demonstrate confinement of individual atomic ions in an RF Paul trap with novel geometry where the electrodes are located in a single plane and the ions confined above this plane. This device is realized with a simple fabrication procedure and has

Reducing the linewidth of fiber-laser frequency combs

June 30, 2006
Author(s)
Nathan R. Newbury, John J. McFerran, William C. Swann
Fiber laser-based frequency combs typically exhibit broad optical linewidths, particularly in the wings. These broadened linewidths originate from white amplitude noise on the pump laser, which can be eliminated to achieve sub-Hz offset frequency

Autonomy Levels for Unmanned Systems (ALFUS) Framework: An Update

June 28, 2006
Author(s)
Hui-Min Huang, K Pavek, James S. Albus, Elena R. Messina
The initial construct of the framework for the Autonomy Levels of Unmanned Systems (ALFUS) was presented in the 2004 SPIE3 Defense and Security Symposium. This paper describes the continuing development effort and further accomplishments made by the Ad Hoc

Collaborative Tactical Behaviors for Autonomous Ground and Air Vehicles

June 28, 2006
Author(s)
James S. Albus, Anthony J. Barbera, Harry A. Scott, Stephen B. Balakirsky
Tactical behaviors for autonomous ground and air vehicles are an area of high interest to the Army. They are critical for the inclusion of robots in the Future Combat System (FCS). Tactical behaviors can be defined at multiple levels: at the Company

Detection Of Ketenimine (CH 2 CNH) in SGRB2(N) Hot Cores

June 28, 2006
Author(s)
Francis J. Lovas, J M. Hollis, A Remijan, P R. Jewell
Ketenimine (CH2CNH) has been detected in absorption toward the star-forming region Sagittarius B2(N) with the 100-m Green Bank Telescope (GBT) by means of three rotational transitions: 716-808 at 41.5 GHz, 819-909, at 23.2 GHz, and 918-100,10 at 4.9 GHz

Experiments toward Non-contact Safety Standards for Automated Industrial Vehicles

June 28, 2006
Author(s)
Roger V. Bostelman, Tsai Hong Hong, Rajmohan Madhavan
The performance evaluation of an obstacle detection and segmentation algorithm is explained upon comparing a new range camera to ground truth. Automated Guided Vehicles (AGVs) in factory-like environments may one day utilize this algorithm for advanced
Displaying 34051 - 34075 of 73697
Was this page helpful?