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Search Publications

NIST Authors in Bold

Displaying 46201 - 46225 of 143780

Evaluation of Bias for Two Charpy Impact Machines Using the Same Instrumented Striker

May 1, 2011
Author(s)
Christopher N. McCowan, Enrico Lucon, Raymond L. Santoyo
Two Charpy machines were used to test NIST verification specimens at three energy levels: low energy (≈ 15 J at -40°C), high energy (≈ 100 J at -40°C) and super-high energy (≈ 240 J at room temperature). The study evaluates the differences observed for the

Flexible Memristors Fabricated through Sol-Gel Hydrolysis

May 1, 2011
Author(s)
Joseph L. Tedesco, Nadine Gergel-Hackett, Laurie Stephey, Andrew A. Herzing, Madelaine H. Hernandez, Joseph J. Kopanski, Christina A. Hacker, Curt A. Richter
Memristors were fabricated on flexible polyethylene terephthalate substrates consisting of an oxide film generated through hydrolysis of a spun-on sol-gel. X-ray photoelectron spectroscopy, spectroscopic ellipsometry, transmission electron microscopy, and

Multi-wavelength Pumping Technique for Up-conversion Single-photon Detectors

May 1, 2011
Author(s)
Lijun Ma, Joshua Bienfang, Oliver T. Slattery, Xiao Tang
We propose a multi-wavelength pumping technique to improve temporal resolution of up-conversion single-photon detectors. By using two-wavelength pumping we doubled the date rate of a quantum system beyond its original limitation.

Multigate Mesh Routing for Smart Grid Last Mile Communications

May 1, 2011
Author(s)
Hamid Gharavi, Bin Hu
One of the most important issues in Smart Grid is to provide consumers with the knowledge of their energy usage, as well as allowing the utility to monitor and control the electric system components with real time status. This would require the design of a

Parahydrogen-enhanced zero-field nuclear magnetic resonance

May 1, 2011
Author(s)
Svenja A. Knappe, T. Theis, P. Ganssle, G Kervem, M Ledbetter, D Budker, A Pines, John E. Kitching
Nuclear magnetic resonance (NMR) is a powerful analytical tool for determination of molecular structure and function, with broad impact in biology, medicine, materials science, and fundamental research. Conventionally, NMR is performed in multiTesla

Superconducting nanowire single-photon detectors

May 1, 2011
Author(s)
Karl Berggren, Vikas Anant, Burm Baek, E Dauler, X Hu, Andrew J. Kerman, F Marsili, Richard Mirin, Richard J. Molnar, Sae Woo Nam, F Najafi, Martin Stevens, F Wong, Tian Zhong
Existing Superconducting Nanowire Single-Photon Detector (SNSPD) technology achieves simultaneously high device detection efficiency (as high as 57% at 1550 nm optical wavelength [1]), ultrashort jitter performance (30 ps), and a fast reset time ( 3 ns)

The Impact of Dispersion on Amplitude and Frequency Noise in a Yb-fiber Laser Comb

May 1, 2011
Author(s)
Lora L. Nugent-Glandorf, Todd Johnson, Yohei Kobayashi, Scott A. Diddams
We describe a Yb-fiber based laser comb, with a focus on the relationship between net cavity dispersion and the amplitude noise and frequency noise on the comb. While tuning the net cavity dispersion from anomalous to normal, we measure the amplitude noise

Third-order antibunching from an imperfect single-photon source

May 1, 2011
Author(s)
Martin J. Stevens, Scott C. Glancy, Sae Woo Nam, Richard P. Mirin
We measure second- and third-order coherences of an imperfect single-photon source. The magnitude of third-order antibunching indicates that imperfect second-order antibunching results from background emission with Poissonian photon number statistics.

Energetic Photon Spectra from Targets Irradiated by Picoseconds Lasers

April 30, 2011
Author(s)
Lawrence T. Hudson, John F. Seely, Csilla Szabo, Uri Feldman, Hui Chen, Albert Henins
Photon spectra in the energy range 60 keV to 1 MeV were recorded from targets irradiated by the LLNL Titan and LLE EP picosecond lasers. The radiation consisted of K shell radiation, Bremsstrahlung radiation from MeV electrons, and preliminary evidence for
Displaying 46201 - 46225 of 143780
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