Now showing items 1-10 of 134
Complexity, fractals, disease time, and cancer
(American Physical Society, 2004-12)
Despite many years of research, a method to precisely and quantitatively determine cancer disease state remains elusive. Current practice for characterizing solid tumors involves the use of varying systems of tumor grading ...
Highly sensitive optical response of optical fiber long period gratings to nanometer-thick ionic self-assembled multilayers
(AIP Publishing, 2005-05-01)
Ionic self-assembled multilayers deposited on long period fiber gratings (LPGs) yield dramatic resonant-wavelength shifts, even with nanometer-thick films. Fine control of the refractive index and the thickness of these ...
Millisecond switching in solid state electrochromic polymer devices fabricated from ionic self-assembled multilayers
(AIP Publishing, 2008-01-01)
The electrochromic switching times of solid state conducting polymer devices fabricated by the ionic self-assembled multilayer method has been investigated. The devices were composed of bilayers of poly(3,4-ethylenedioxy ...
Quantum Nonequilibrium Steady States Induced by Repeated Interactions
(American Physical Society, 2009-05-22)
We study the steady state of a finite XX chain coupled at its boundaries to quantum reservoirs made of free spins that interact one after the other with the chain. The two-point correlations are calculated exactly, and it ...
Anomalous nucleation far from equilibrium
(American Physical Society, 2005-03-25)
We present precision Monte Carlo data and analytic arguments for an asymmetric exclusion process, involving two species of particles driven in opposite directions on a 2xL lattice. To resolve a stark discrepancy between ...
Solving pure Yang-Mills theory in 2+1 dimensions
(American Physical Society, 2006-06-09)
We analytically compute the spectrum of the spin zero glueballs in the planar limit of pure Yang-Mills theory in 2+1 dimensions. The new ingredient is provided by our computation of a new nontrivial form of the ground state ...
Constraints on two-Higgs-doublet models at large tan beta from W and Z decays
(American Physical Soc, 2000-09-01)
Pressure-induced phase transition in PbSc0.5Ta0.5O3 as a model Pb-based perovksite-type relaxor ferroelectric
(American Physical Society, 2008-07-04)
We report pressure-induced structural changes in PbSc0.5Ta0.5O3 studied by single-crystal x-ray diffraction and Raman scattering. The appearance of a soft mode, a change in the volume compressibility, broadening of the ...
General rules for predicting phase transitions in perovskites due to octahedral tilting
(American Physical Society, 2005-07-08)
Recent experiments on several oxide perovskites reveal that they undergo tilt phase transitions to higher-symmetry phases on increasing pressure and that dT(c)/dP < 0, contrary to a general rule previously proposed for ...
Geometry-dependent electronic properties of highly fluorescent conjugated molecules
(American Physical Society, 2000-09-11)
We present a combined experimental/theoretical study of the electronic properties of conjugated para-phenylene type molecules under high pressure up to 80 kbar. Pressure is used as a tool to vary the molecular geometry and ...