We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1 microm. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to T(c) and quantum p...

We propose primal-dual active-set (PDAS) methods for solving large-scale instances of an important class of convex quadratic optimization problems (QPs). The iterates of the algorithms are partitions of the index set of variables, where corresponding to each partition there exist unique primal-dual variables that can be obtained by solving a (reduced) linear system. Algorithms of this type have...

The lack of ubiquinone in the isolated succinate-ubiquinone reductase (Complex II) and in some preparations of ubiquinone-binding protein (QPs) has caused some concern about the nature of interaction between ubiquinone and QPs. When a low concentration of radioactively labeled ubiquinone derivative in dilute detergent solution was incubated with delipidated or intact succinate-ubiquinone reduct...

Submitted for the MAR13 Meeting of The American Physical Society Quasiparticle scattering spectroscopy (QPS) of Kondo lattice heavy fermions1 L.H. GREENE, S.M. NARASIWODEYAR, P. BANERJEE, W.K. PARK, University of Illinois at Urbana-Champaign, E.D. BAUER, P.H. TOBASH, R.E. BAUMBACH, F. RONNING, J.L. SARRAO, J.D. THOMPSON, Los Alamos National Laboratory — Point-contact spectroscopy (PCS) is a pow...

Satisfaction of different QoS demands for various broadband services in wireless networks requires that multi-user packet scheduling intelligently use both channel state information (CSI) and queue state information (QSI). A combination of queuechannel-aware scheduling and power/rate allocation on each transmit dimension is known as “cross-layer resource allocation”. This thesis investigates va...

Methyl bromide (MB) as a fumigant for Quarantine and Pre-shipment (QPS) could offer eradication of target pests within shorter fumigation period and without phytotoxicity. Therefore, unlike MB alternatives for soil fumigation, there is no ideally MB alternative fumigant for QPS purpose, particularly for perishable commodities. It is critically important that within shorter fumigation time requi...

We report ultra-narrow-linewidth erbium-doped aluminum oxide (Al2O3:Er3+) distributed feedback (DFB) lasers with a wavelength-insensitive silicon-compatible waveguide design. The waveguide consists of five silicon nitride (SiNx) segments buried under silicon dioxide (SiO2) with a layer Al2O3:Er3+ deposited on top. This design has a high confinement factor (> 85%) and a near perfect (> 98%) inte...

Quantum phase-slip (QPS) is the exact dual to well-known Josephson effect. Although there are numerous proposals for applications of QPS devices, experimental work develop these remains in relatively early stages. Significant barriers exploiting nanowires useful technologies still exist, such as establishing robust nanowire fabrication methods that allow coupling low-loss circuits, and demonstr...