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NIST Authors in Bold

Displaying 3826 - 3850 of 4637

Capturing Magnetic Bead-based Arrays Using Perpendicular Magnetic Anisotropy

August 20, 2019
Author(s)
Daniel B. Gopman, Yu-Ching Hsiao, Reem Khojah, Xu Li, Auni Kundu, Cai Chen, Andres Chavez, Taehwan Lee, Zhuyun Xiao, Abdon E. Sepulveda, Rob Candler, Gregory P. Carman, Dino Di Carlo, Christopher Lynch
Designing and implementing means of locally trapping magnetic beads and understanding the factors underlying the bead capture force are important steps toward advancing the capture- release process of magnetic particles for biological applications. In

Local field effect on charge-capture/emission dynamics

October 30, 2017
Author(s)
Kin P. Cheung, Dmitry Veksler, Jason P. Campbell
Charge-capture/emission is ubiquitous in solid state devices. Its dynamics often play critical roles in device operation and reliability. Treatment of this basic process is found in many text books and is considered well understood. As in many solid state

Dynamical Heterogeneity in a Vapor-Deposited Polymer Glass

February 23, 2017
Author(s)
Jack F. Douglas, Wengang Zhang, Francis W. Starr
Recently, there has been great interest in 'ultrastable' glasses formed via vapor deposition, both because of emerging applications of these materials (e.g., active layers in light-emitting diodes and photovoltaics) and, theoretically, as materials for

Advances in RRAM technology: identifying and mitigating roadblocks

January 13, 2017
Author(s)
Dmitry Veksler, Gennadi Bersuker
The filament-based RRAM has demonstrated superior scalability, endurance, low power operation, retention, and operating speed. A challenge navigating trade-offs between high density, low switching power, and stability can be addressed by capitalizing on

Model colloid system for interfacial sorption kinetics

March 24, 2015
Author(s)
Paul NMN Salipante, Steven D Hudson
Adsorption kinetics of nanometer scale molecules, such as proteins at interfaces, is usually determined through measurements of surface coverage. Their small size limits the ability to directly observe individual molecule behavior. Hence, the effect of

3D Monte Carlo modeling of the SEM: Are there applications to photomask metrology?

October 23, 2014
Author(s)
John S. Villarrubia, Andras Vladar, Michael T. Postek
The ability to model the effect of fields due to charges trapped in insulators with floating conductors has been added to JMONSEL (Java Monte Carlo simulator for Secondary Electrons) and applied to a simple photomask metal on glass geometry. These

Bloch oscillations collapse and revival of interacting bosons in an optical lattice

February 10, 2014
Author(s)
Khan W. Mahmud, Lei Jiang, Eite Tiesinga, Philip Johnson
We study the dynamics of interacting superfluid bosons in a one dimensional vertical optical lattice after a sudden increase of the lattice potential depth. We show that this system can be exploited to investigate the effects of strong interactions on

Neutron reflectivity characterization of the photoacid reaction-diffusion latent and developed images of molecular resists for extreme-ultraviolet lithography

May 11, 2012
Author(s)
Vivek M. Prabhu, Shuhui Kang, Wen-Li Wu, Sushil K. Satija, Christopher K. Ober, Jing Sha, Peter V. Bonnesen
Lithographic feature size requirements have approached a few radius of gyration of chemically-amplified photoresist polymers used in thin film patterning. Further, the feature dimensions are commensurate with the photoacid diffusion length that defines the

Quantum interference between two single photons of different microwave frequencies

April 20, 2012
Author(s)
Francois E. Nguyen, Eva A. Zakka-Bajjani, Jose A. Aumentado, Raymond W. Simmonds
Quantum interference is an important tool for fields such as lithography, metrology and quantum processing. Two identical optical photons (photons with the same wavelength and polarization) simultaneously sent through the two input ports of a semi

Metrology for the Electrical Characterization of Semiconductor Nanowires

November 1, 2008
Author(s)
Curt A. Richter, Hao Xiong, Xiaoxiao Zhu, Wenyong Wang, Vincent M. Stanford, Woong-Ki Hong, Takhee Lee, D. E. Ioannou, Qiliang Li
Nanoelectronic devices based upon self-assembled semiconductor nanowires are excellent research tools for investigating the behavior of structures with sub-lithographic features as well as a promising basis for future information processing technologies

Advances in Chip-Scale Atomic Frequency References at NIST

September 12, 2007
Author(s)
Svenja A. Knappe, V Shah, Alan Brannon, Vladislav Gerginov, Hugh Robinson, Z Popovic, Leo W. Hollberg, John E. Kitching
We present new advances in the development of chip-scale atomic frequency references. Coherent population trapping (CPT) resonances usually exhibit contrasts below 10 %, when interrogated with frequency modulated lasers. A relatively simple way to increase

Effects of Inhomogeneity on the Spectrum of the Mott-Insulator State

December 1, 2003
Author(s)
G Pupillo, Eite Tiesinga, Carl J. Williams
We investigate the existence of quantum quasi phase transitions for an ensemble of ultracold bosons in a one-dimensional optical lattice, performing exact diagonalizations of the Bose-Hubbard Hamiltonian. When an external parabolic potential is added to

Dispersion and Nucleating Effects of Clay Fillers in Nanocomposite Polymer Films

December 1, 2001
Author(s)
V Ferreiro, G Schmidt, Charles C. Han, Alamgir Karim
Nanocomposite polymeric materials offer unique properties such as mechanical, electrical, thermal, etc. Such property enhancements are induced not only by the physical presence of the filler but also by the interaction of the polymer with the filler and

Fluorescence Intermittency in Single InP Quantum Dots

October 1, 2001
Author(s)
M Kuno, D P. Fromm, Alan Gallagher, David Nesbitt, O I. Micic, A J. Nozik
Fluorescence kinetics of isolated colloidal InP quantum dots (Qds) are investigated for the first time via confocal single molecule microscopyFluorescenceintermittency or blinking is observed in all QD's sampled, characterized by abrupt chanc,yes between

85 Rb BEC Near a Feshbach Resonance

February 1, 2001
Author(s)
N R. Claussen, S L. Cornish, J L. Roberts, Eric A. Cornell, C E. Wieman
Bose-Einstein condensation has been achieved in a magnetically trapped sample of 85Rb atoms. Stable condensates of up to 10 4 atoms have been created by using a magnetic-field-induced Feshbach resnance to reverse the sign of the zero-field scattering
Displaying 3826 - 3850 of 4637
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