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Displaying 37876 - 37900 of 74106

Conducting atomic force microscopy for Nanoscale tunnel barrier characterization

August 13, 2004
Author(s)
Kristine Lang, Dustin Hite, Raymond Simmonds, Robert McDermott, David P. Pappas, John M. Martinis
Increasing demands on nanometer scale properties of oxide tunnel barriers necessitate a consistent means to assess them at these lengths. Here we use conducting atomic force microscopy (CAFM) to characterize aluminum oxide (AlOx)barriers to be used in

Decoherence in Josephson Qubits from Junction Resonances

August 13, 2004
Author(s)
Raymond Simmonds, Kristine Lang, Dustin Hite, David P. Pappas, John M. Martinis
We present experimental data that demonstrates a large reduction in the coherence of a Josephson phase qubit from spurious microwave resonances. These resonances are believed to arise from resonant fluctuators in the tunnel junction that couple to the

Helical Porous Protein Mimics

August 12, 2004
Author(s)
Virgil Percec, A E. Dulcey, Y Miura, U Edlund, V S. Balagurusamy, Steven Hudson, Paul A. Heiney, H Duan, S N. Magonov
Pore forming proteins, peptides and their remodeled structures perform a diversity of biological and biologically inspired functions. They include viral helical coats,1 transmembrane channels2,3, mediated protein folding4 and reversible encapsulation5

Contribution to the Zn-Rich Part of the Zn-Zr Phase Diagram

August 11, 2004
Author(s)
Maureen E. Williams, William J. Boettinger, Ursula R. Kattner
The reaction of zinc vapor with Zircaloy-4 and nuclear grade zirconium was investigated with various analytical techniques: optical metallography, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction. Based on

Micro-Electroplating Silver on Sharp Edges for Fabrication of Solid-State Nanopores

August 11, 2004
Author(s)
Brian J. Polk, Melanie Bernard, John J. Kasianowicz, Martin Misakian, Michael Gaitan
Electrodeposition of silver was investigated as a fabrication tool for infilling large (103 mm2) vias in silicon substrates. Silver reduction from ammoniacal silver nitrate was studied at electrodes of novel geometry, i.e. the edge of the vias, with

Single photon sources based on single quantum dots

August 8, 2004
Author(s)
Richard P. Mirin
We describe temperature-dependent photon antibunching measurements from single InGaAs/GaAs quantum dots. The second order intensity correlation demonstrates single emitter emission up to 120 K and nonclassical light emission to 135 K.

Extraordinary Flow Characteristics of Nanotube-Filled Polymer Materials

August 2, 2004
Author(s)
S B. Kharchenko, Kalman D. Migler, Jack F. Douglas, Jan Obrzut, E A. Grulke
Carbon nanotubes are under intense investigation due their potential for modifying the electrical conductivity (s), shear viscosity (h) and other transport properties of polymeric materials. They are hybrids of ordinary filler particles and nanoscale

10 kV, 123 m O}-cm 2 4H-SiC Power DMOSFETs

August 1, 2004
Author(s)
Sei-Hyung Ryu, Sumi Krishnaswami, Michael O'Loughlin, James Richmond, Anant Agarwal, John W. Palmour, Allen R. Hefner Jr.
10 kV, 123 mΩ}-cm 2 Power DMOSFETs in 4H-SiC are demonstrated. A 42% reduction in R on,sp, compared to previously reported value, was achieved by using an 8 x 1014 cm-3 doped, 85 υm thick drift epilayer. An effective channel mobility of 22 cm2/Vs was

A Buckling-Based Metrology for Measuring the Elastic Moduli of Polymeric Thin Films

August 1, 2004
Author(s)
Christopher Stafford, Eva Simonyi, C Harrison, Kathryn Beers, Alamgir Karim, Eric J. Amis, Mark R. VanLandingham, H C. Kim, W Volksen, R D. Miller
As technology continues towards smaller, thinner and lighter devices, more stringent demands are placed on thin polymer films as diffusion barriers, dielectric coatings, electronic packaging and so on. Therefore, there is a growing need for testing
Displaying 37876 - 37900 of 74106