Browsing FAS Scholarly Articles by Title
Now showing items 1982-2001 of 18276
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Characterizing the Metal–SAM Interface in Tunneling Junctions
(American Chemical Society (ACS), 2015)his paper investigates the influence of the interface between a gold or silver metal electrode and an n-alkyl SAM (supported on that electrode) on the rate of charge transport across junctions with structure Met(Au or ... -
Characterizing transcriptional heterogeneity through pathway and gene set overdispersion analysis
(2016)The transcriptional state of a cell reflects a variety of biological factors, from persistent cell-type specific features to transient processes such as cell cycle. Depending on biological context, all such aspects of ... -
Charge Abundances of the Solar Wind Ions Inferred from Cometary X-Ray Spectra
(American Astronomical Society, 2003)An emission spectrum of X-rays from comet McNaught-Hartley (C/1999 T1) detected with the Chandra X-ray telescope is analyzed on the assumption that it results from electron captures by heavy ions of the solar wind colliding ... -
Charge as a Selection Criterion for Translocation through the Nuclear Pore Complex
(Public Library of Science, 2010)Nuclear pore complexes (NPCs) are highly selective filters that control the exchange of material between nucleus and cytoplasm. The principles that govern selective filtering by NPCs are not fully understood. Previous ... -
Charge exchange in collisions of beryllium with its ion
(Royal Society of Chemistry (RSC), 2011)Close-coupling calculations of the resonance and near resonance charge exchange in ion–atom collisions of Be+2 at low and intermediate energies are presented. Accurate ab initio calculations are carried out of the ... -
Charge Fractionalization in Non-Chiral Luttinger Systems
(Elsevier, 2008)One-dimensional metals, such as quantum wires or carbon nanotubes, can carry charge in arbitrary units, smaller or larger than a single electron charge. However, according to Luttinger theory, which describes the low-energy ... -
Charge Fractionalization in Quantum Wires
(Nature Publishing Group, 2008)Although the unit of charge in nature is a fundamental constant, the charge of individual quasiparticles in some low-dimensional systems may be fractionalized. Quantum one-dimensional (1D) systems, for instance, are ... -
Charge localization instability in a highly deformable dielectric elastomer
(AIP Publishing, 2014)This paper shows that a highly deformable capacitor made of a soft dielectric and two conformal electrodes can switch between two states discontinuously, by a first-order transition, as the total charge varies gradually. ... -
Charge Noise Spectroscopy Using Coherent Exchange Oscillations in a Singlet-Triplet Qubit
(American Physical Society (APS), 2013)Two level systems that can be reliably controlled and measured hold promise as qubits both for metrology and for quantum information science. Since a fluctuating environment limits the performance of qubits in both capacities, ... -
Charge Order Driven by Fermi-Arc Instability in Bi2Sr2-xLaxCuO6+
(American Association for the Advancement of Science (AAAS), 2013)The understanding of the origin of superconductivity in cuprates has been hindered by the apparent diversity of intertwining electronic orders in these materials. We combined resonant x-ray scattering (REXS), scanning-tunneling ... -
Charge ordering in three-band models of the cuprates
(American Physical Society, 2015) -
Charge state dependence of channeled ion energy loss
(American Physical Society (APS), 1981)The charge state dependence of channeled ion energy loss has been determined for a series of ions ranging from fluorine to chlorine along the ⟨110⟩ direction in a silicon crystal. Energy losses for both bare ions and ions ... -
Charge Transfer Between Neutral Atoms and Highly Ionized Species: Implications for ISO Observations
(American Astronomical Society, 1997)We estimate rate coefficients for charge transfer between neutral hydrogen and helium and moderately to highly ionized heavy elements. Although charge transfer does not have much influence on hot collisionally ionized ... -
Charge Transfer Directed Radical Substitution Enables para-Selective C–H Functionalization
(2016)Efficient C–H functionalization requires selectivity for specific C–H bonds. Progress has been made for directed aromatic substitution reactions to achieve ortho- and meta- selectivity, but a general strategy for para-selective ... -
Charge Transfer Dynamics at the α/β Subunit Interface of a Photochemical Ribonucleotide Reductase
(American Chemical Society (ACS), 2016)Ribonucleotide reductase (RNR) catalyzes the conversion of ribonucleotides to deoxyribonucleotides to provide the monomeric building blocks for DNA replication and repair. Nucleotide reduction occurs by way of multi-step ... -
Charge Transport Across Insulating Self-Assembled Monolayers: Non-equilibrium Approaches and Modeling To Relate Current and Molecular Structure
(American Chemical Society (ACS), 2014)This paper examines charge transport by tunneling across a series of electrically insulating molecules with the structure HS(CH2)4CONH(CH2)2R) in the form of self-assembled monolayers (SAMs), supported on silver. The ... -
Charge Transport and Rectification in Arrays of SAM-Based Tunneling Junctions
(American Chemical Society, 2010)This paper describes a method of fabrication that generates small arrays of tunneling junctions based on self-assembled monolayers (SAMs); these junctions have liquid-metal top-electrodes stabilized in microchannels and ... -
Charge Tunneling along Short Oligoglycine Chains
(Wiley-Blackwell, 2015)This work examines charge transport (CT) through self-assembled monolayers (SAMs) of oligoglycines having an N-terminal cysteine group that anchors the molecule to a gold substrate, and demonstrate that CT is rapid (relative ... -
Charge-transfer induced EUV and soft X-ray emissions in the heliosphere
(EDP Sciences, 2006)Aims. We study the EUV/soft X-ray emission generated by charge transfer between solar wind heavy ions and interstellar neutral atoms and variations of the X-ray intensities and spectra with the line of sight direction, the ... -
Charged hydrophobic colloids at an oil–aqueous phase interface
(American Physical Society (APS), 2015)Hydrophobic poly(methyl methacrylate) (PMMA) colloidal particles, when dispersed in oil with a relatively high dielectric constant, can become highly charged. In the presence of an interface with a conducting aqueous phase, ...