Los Alamos National Laboratory – Page 2

Micro-Patterning of Ionic Reservoirs within a Double Bilayer Lipid Membrane to Fabricate a 2D Array of Ion-Channel Switch Based Electrochemical Biosensors

Sansiñena J.M., Yee C.K., Sapuri A., Swanson B.I., Redondo A., Parikh A.N., Los Alamos National Laboratory, US

We present a simple approach for the design of ionic reservoir arrays within a double phospholipid bilayer to ultimately develop a 2D array of ion-channel switch based electrochemical biosensors. As a first step, a primary [...]

Development and Characterization of a 2-D microchip-based Protein separation system

Feng J.J., Olazábal V, Olivares J.A., Sundaram S., Krishnamoorthy S., Iyer S., Los Alamos National Laboratory, US

Traditional methods in proteomics have relied on gel-based separation of proteins followed by directed cleavage of these proteins and mass spectrometry to measure the products. The emphasis on reliable, high-throughput analyses has led to the [...]

Tunneling Spectrum of Single-Spin Oscillations

Bulaevskii L.N., Hruska M., Ortiz G., Los Alamos National Laboratory, US

We consider tunneling between electrodes via a microscopic system which can be modeled by the two-level Hamiltonian (a localized spin 1/2 probed by STM or a quantum dot). Measurements of the tunneling current I(t) in [...]

A Scheme for Electrical Detection of Single Electron Spin Resonance

Martin I., Mozyrsky D., Jiang H.W., Los Alamos National Laboratory, US

We study a scheme for electrical detection of the spin resonance (ESR) of a single electron trapped near a Field Effect Transistor (FET) conduction channel. In this scheme, the resonant Rabi oscillations of the trapped [...]

Noise Spectroscopy of a Single Spin with Spin Polarized STM

Nussinov Z., Crommie M., Balatsky A.V., Los Alamos National Laboratory, US

We propose a mechanism for detection of a single spin center on a non-magnetic substrate. In the detection scheme, the STM tunnel current is correlated with the spin orientation. In the presence of magnetic field, [...]

Quantum-Classical Transition Induced by Electrical Measurement

Mozyrsky D., Martin I., Los Alamos National Laboratory, US

A model of an electrical tunnel junction coupled to a mechanical system (oscillator) is studied to simulate the dephasing effect of measurement on a quantum system. The problem is solved at zero temperature under conditions [...]

Phase transition induced hydrodynamic instability

Loh K-K, Saxena A., Lookman T., Parikh A., Los Alamos National Laboratory, US

Instabilities leading to oscillations in some particular properties of a system are intimately related to pattern formation. Nontrivial patterns form spontaneously as a result of the occurrence and propagation of the fronts of instability. These [...]

Molecular-Dynamics Study of Physical Properties in Sintered Nano-Particles

Kadau D., Kadau K., Lomdahl P.S., Entel P., Kadau D., Kadau K., Kreth M., Germann T.C., Holian B.L., Westerhoff F., Wolf D.E., Los Alamos National Laboratory, US

Nano-crystalline metals, in which the size of grains is in the nanometer range, exhibit physical properties different from ordinary polycrystalline materials, thus these materials are of technological interest [1]. One example is the increasing hardness [...]

An Effective Model for Microscopic Intrinsic Localized Modes

Kalosakas G., Bishop A.R., Los Alamos National Laboratory, US

We present a system of coupled degrees of freedom that can effectively describe the localization of intra-molecular excitations in the charge transfer solid PtCl. These excitations correspond to the Raman active motion of chlorines (symmetric [...]

Accelerated Dynamics Simulations of Nanotubes

Uberuaga B., Stuart S.J., Voter A.F., Los Alamos National Laboratory, US

We report on the application of accelerated dynamics techniques to the study of carbon nanotubes. We have used the parallel replica method and temperature accelerated dynamics simulations are currently in progress. In the parallel replica [...]