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Displaying 1026 - 1050 of 1758

Copper oxide nanoparticle mediated DNA damage in terrestrial plant models

December 22, 2011
Author(s)
Bryant C. Nelson, Donald H. Atha, Elijah J. Petersen, Huanhua Wang, Danielle Cleveland, Richard D. Holbrook, Pawel Jaruga, M Miral Dizdar, Baoshan Xing
Engineered nanoparticles, due to their unique electrical, mechanical and catalytic properties, are presently found in many commercial products and will be intentionally or inadvertently released at increasing concentrations into the natural environment

Nanometrology Using Through-Focus Scanning Optical Microscopy Method

December 21, 2011
Author(s)
Ravikiran Attota, Richard M. Silver
We present an initial review of a novel through-focus scanning optical microscopy (TSOM) imaging method that produces nanometer dimensional measurement sensitivity using a conventional bright-field optical microscope. In the TSOM method a target is scanned

Feedback Control of Optically Trapped Particles

December 17, 2011
Author(s)
Jason J. Gorman, Arvind K. Balijepalli, Thomas W. LeBrun
Optical trapping is a method for manipulating micro- and nanoscale particles that is widely used in biophysics and colloid science, among other areas. This method uses optical forces to confine the position of a particle to a localized region, which is

MOSFETs made from GaN nanowires with fully conformal cylindrical gates

December 2, 2011
Author(s)
Paul T. Blanchard, Kristine A. Bertness, Todd E. Harvey, Aric W. Sanders, Norman A. Sanford, Steven M. George, Dragos Seghete
We report novel metal-oxide-semiconductor field effect transistors (MOSFETs) based on individual gallium nitride (GaN) nanowires with fully conformal cylindrical gates. The W/Al 2O 3 gates were deposited by atomic layer deposition. Reverse-bias breakdown

Nanofibers for RF and Beyond

December 1, 2011
Author(s)
Thomas M. Wallis, Kichul Kim, Pavel Kabos, Dejan Filipovic
In order to realize new interconnect concepts based on nanofibers, reliable metrology is required. Given the clock-speeds of integrated circuits in the present as well as the foreseeable future, this metrology must be compatible with radio frequencies (RF)

Spectral Line-by-Line Pulse Shaping of On-Chip Microresonator Frequency Combs

December 1, 2011
Author(s)
Fahmida Ferdous, Houxun H. Miao, Daniel E. Leaird, Kartik Srinivasan, Jian Wang, Lei Chen, Leo T. Varghese, Andrew M. Weiner
We report, for the first time to the best of our knowledge, spectral phase characterization and line-by-line pulse shaping of an optical frequency comb generated by nonlinear wave mixing in a micro-ring resonator. The comb is compressed to a train of near

Gallium nitride nanowires achieve crystalline perfection

October 25, 2011
Author(s)
Kristine A. Bertness, Norman A. Sanford, John B. Schlager
A new method of growing a common semiconductor provides an avenue for fabricating perfect crystals in a form that takes advantage of their unique optical, electrical, and mechanical properties.

Radiation-Induced Synthesis of Poly(vinylpyrrolidone) Nanogel

October 14, 2011
Author(s)
Jung-Chul An, Alia Weaver, Byungnam Kim, Aaron Barkatt, Dianne L. Poster, Wyatt N. Vreeland, Joseph Silverman, Mohamad Al-Sheikhly
Studies of the radiation-induced synthesis of poly(vinylpyrrolidone) (PVP) nanogels, intended to provide a basis for obtaining intra-molecular cross-linked products, which are more useful in drug delivery, show that a sharp change in the controlling
Displaying 1026 - 1050 of 1758
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