Dynamic focusing

BMDP Dynamic FOCUS Multiplan SYLK Files... 

P. V. Tan, V. V. Laiko, and V. M. Doroshenko. Atmospheric Pressure MALDI with Pulsed Dynamic Focusing for High-Efficiency Transmission of Ions into a Mass Spectrometer. Anal. Chem., 76(2004) 2462-2469. 

We now turn to a more detailed analysis of the theory of control of quantum many-body dynamics, focusing attention on the particular case of control of product formation in a photoinduced unimolecular reaction. 

S. Bonella and D.F. Coker. Semi-classical implementation of the mapping Hamiltonian approach for non-adiabatic dynamics Focused initial distribution sampling. J. Chem. Phys., 118 4370, 2003. 

The main purpose of this chapter is to present the basics of ab initio molecular dynamics, focusing on the practical aspects of the simulations, and in particular, on modeling chemical reactions. Although CP-MD is a general molecular dynamics scheme which potentially can be applied in combination with any electronic structure method, the Car-Parinello MD is usually implemented within the framework of density functional theory with plane-waves as the basis set. Such an approach is conceptually quite distant from the commonly applied static approaches of quantum-chemistry with atom-centered basis sets. Therefore, a main... 

Tan, P.V., Laiko, V.V., Doroshenko, V.M. (2004) Atmospheric pressure MALDI with pulsed dynamic focusing for high-efficiency transmission of ions into a mass spectrometer. Anal. Chem. 76,2462-2469. 

Early studies of the distance dependence of ET dynamics focused on intramolecular electron-spin transfer in radical anions containing two equivalent Ti-moieties separated by a hydrocarbon bridge (Figure 8). One of these moieties, which houses the unpaired electron, functions as the donor, while the other (neutral) is an acceptor. ESR studies of the radieal anions of a, ct -diarylalkanes, Ar-(CH2) -Ar 1( ) and re-... 

Fig. 5.8. (A) General scheme of a dynamic focused microwave-assisted extractor. (B) Experimental set-up used to integrate microwave-assisted extraction with the subsequent steps of the analytical process. (1) Leaching step CT controller, MO microwave oven, S sample, R condenser, WR water reservoir, TCPP two-channel piston pump, ER extract reservoir, SV switching valve. (2) Clean-up/preconcentration step M methanol, A air, B buffer, PP peristaltic pump, F filter, EL elution loop, MC mini-column, R retention direction, E elution direction, 1V1-1V3 injection valves, W waste. (3) Individual separation-detection step HPIV high-pressure injection valve, AC analytical column, DAD diode array detector, SR solvent reservoirs.

Dynamics. Cluster dynamics constitutes a rich held, which focused on nuclear dynamics on the time scale of nuclear motion—for example, dissociahon dynamics [181], transihon state spectroscopy [177, 181, 182], and vibrahonal energy redistribuhon [182]. Recent developments pertained to cluster electron dynamics [183], which involved electron-hole coherence of Wannier excitons and exciton wavepacket dynamics in semiconductor clusters and quantum dots [183], ultrafast electron-surface scattering in metallic clusters [184], and the dissipahon of plasmons into compression nuclear modes in metal clusters [185]. Another interesting facet of electron dynamics focused on nanoplasma formation and response in extremely highly ionized molecular clusters coupled to an... 

Path-integral statistical mechanics is obtained in strict analogy to path-integral quantum dynamics [71]. The path-integral version of quantum dynamics focuses on the fact that a quantum mechanical system is allowed to violate Hamilton s principle. For example, tunneling (a nonclassical motion) is possible within quantum mechanics. Seizing on a comment by Dirac [72] on the relationship between S and the quantum propagator... 

In an ergodic system, every possible trajectory of a particular duration occurs with a unique probability. This fact may be used to define a distribution functional for dynamical paths, upon which the statistical mechanics of trajectories is based. For example, with this functional one can construct partition functions for ensembles of trajectories satisfying specific constraints, and compute the reversible work to convert between these ensembles. In later sections, we will show that such manipulations may be used to compute transition rate constants. In this section, we derive the appropriate path distribution functionals for several types of microscopic dynamics, focusing on the constraint that paths are reactive, that is, that they begin in a particular stable state. A, and end in a different stable state, B. 

Abstract Among the noncontinuum-based computational techniques, the lattice Boltzman method (LBM) has received considerable attention recently. In this chapter, we will briefly present the main elements of the LBM, which has evolved as a minimal kinetic method for fluid dynamics, focusing in particular, on multiphase flow modeling. We will then discuss some of its recent developments based on the multiple-relaxation-time formulation and consistent discretizatirai strategies for enhanced numerical stability, high viscosity contrasts, and density ratios for simulation of interfacial instabilities and multiphase flow problems. As examples, numerical investigations of drop collisions, jet break-up, and drop impact on walls will be presented. We will also outline some future directions for further development of the LBM for applications related to interfacial instabilities and sprays. 

Coaxial flow microchannel is mie of the most widely used laminar flow microchaimels. For instance, Hong et al. [4] used microfluidic hydro-dynamic focusing to control the convective— diffusive mixing of two miscible nanoparticle precursor solutimis. By varying microfluidic... 

The optical focus system or optical profilometer system is based on the dynamic focusing principle of a confocal microscope. These systems... 

Tahnan, J. R. and Garverick, S. L. (2001) Integrated-Circuit Implementation of a Matched-Cell Dynamic Focusing Architecture for a 5-Channel, 50-Mhz Planar Annular Array, Proceedings of the 2001 IEEE Ultrasonics Symposium, 2, 1109-1112. 

Seip, R., VanBaren, P. and Ebbini, E.S. (1994) Dynamic focusing in ultrasound hyperthermia treatments using implantable hydrophone arrays, IEEE Trans. Ultrason., Ferroelect., Ereq. Contr., 41, 706-13. 

A. Divetia, T.-H. Hsieh, J. Zhang, Z. Chen, M. Bachman, and G.-P. Li, "Dynamically focused optical coherence tomography for endoscopic applications," Applied Physics Letters, vol. 86, pp. 103902-103903,2005. 

T. Xie, S. Guo, Z. Chen, D. Mukai, and M. Brenner, "GRIN lens rod based probe for endoscopic spectral domain optical coherence tomography with fast dynamic focus tracking," Optics Express, vol. 14, pp. 3238-3246,2006. 

---