Global ETD Search
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Showing 1 to 15 of 15 for “"Induced dipole"”.
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Depolarized Light Scattering Studies of the Orientational Structure of Liquid Benzene, Dipole-Induced Dipole Models for Molecular Polarizabilities, and the Cotton-Mouton Effect
The orientational relaxation time ((tau)(,LS)) is measured for liquid benzene by depolarized light scattering as a function of temperature and pressure. The values of (tau)(,LS) are compared with the orientational relaxation time as measured by raman scattering ((tau)(,SP)). The ratio …
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Development of polarizable force fields for proteins
… respond to the electric field by generating induced dipole moment at each site. The PIPF potential is optimized for amides and alkanes which are building blocks of proteins. The molecular dynamics simulations using the PIPF potential yield comparable or better energetics and geometries of the …
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Studies of molecular interactions using physical techniques
… for the formation of each complex and the shift induced in the solute proton by the aromatic in the complex were evaluated. The thermodynamic parameters for the interactions were obtained from the determination of K at several temperatures. The stoichiometries of the complexes obtained from …
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Development of Atomic Force Microscopy Modalities Using Dissipation Signal for Enhancing the Sensitivity of Photo-Induced Force Detection
… spectroscopic scanning modes, such as photo-induced force microscopy (PiFM). PiFM relies on an infrared laser (IR) to excite molecular vibrations, and the resulting photo-induced dipole force is detected by the AFM. The IR laser is used to induce a near-field optical force within the …
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Nuclear Magnetic Resonance Spectroscopic Studies of Molecular Interactions with Special Reference to their Stereo-Specificity
… from the dependence of the observed solvent—induced shift on the mole fraction of the aromatic solvent. Values of ΔGº, ΔHº and ΔSº were determined from the equilibrium quotient values obtained at different temperatures. The data accumulated are strongly indicative of the formation of weakly …
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Dependence of rare-gas adsorbate dipole moment on substrate work function
… produces the observed linear dependence of the induced dipole moment on the heat of adsorption. The present research is to provide further experimental evidence for the theory and mainly focuses on the simple metals to supplement the paucity of data in this area. The Kelvin method is adopted for …
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An investigation of the motion of liquid short chain molecules using Rayleigh-Brillouin spectroscopy
… reorientation and distinct from the interaction induced component, reduces as the molecules become more anisotropic and flexible. The origin of this component is associated with local translational order. The correlation times obtained from molecular reorientation are analysed in terms of a …
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The role of repulsive interaction in molecular self-assembly on insulating surfaces
… interaction and the related adsorption-induced dipole moment, causing and primarily impacting the repulsive interaction. The temperature-dependent analysis reveals the length distribution undergoing a complex transformation during equilibration. The shape of the distribution changes …
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Pulsed molecular beam cavity microwave Fourier transform spectroscopy of some fundamental van der Waals dimers and trimers
… of kHz, which are surprisingly large. The induced dipole moments are estimated to be in the order of 0.01 D. Transitions of four isotopomers of ²⁰Ne₂-Kr and of six isotopomers of ²⁰Ne₂-Xe, all with C₂v symmetry, as well as two mixed isotopomers of ²⁰Ne²²Ne-Kr, have been measured. A recent …
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Fundamental Investigations of Hazardous Gas Uptake and Binding in Metal-Organic Frameworks and Polyurethane Films
… hard:soft segment compositions revealed that dipole-dipole and dipole-induced dipole interactions were responsible for favorable absorption conditions. Furthermore, the ratio of hard and soft segment components of the polyurethane had a minor impact on simulant adsorption. Higher hard-segment …
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The far-infrared absorption spectrum of low temperature hydrogen gas
… spectra cover the very weak and broad collision-induced translational absorption band of 112 which at these low temperatures is observed well isolated from the 112 rotational lines. Translational absorption occurs when two molecules collide and absorb a photon via a transient induced dipole …
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Dopant Incorporation in InAs/GaAs Quantum Dot Infrared Photodetectors
… From this dissertation research, doping related dipole fields are found to be responsible for excessive dark current in QDIPs. </p><p>InAs/GaAs QDIPs were grown using solid source molecular beam epitaxy (MBE) with different doping conditions. The QDIPs were optically characterized using …
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Electrohydrodynamic interactions of colloidal particles undergoing Quincke rotation
… torque with the electric torque due to the induced dipole. The dynamics of a particle undergoing Quincke rotation have been previously shown to obey the classic Lorenz oscillator equations with two bifurcations. When the applied electric field exceeds the critical electric field for …
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A Trapped Single Ion Inside a Bose-Einstein Condensate
… overlapped with a magnetic trap and an optical dipole trap for the neutral atoms. A first synergetic effect is the sympathetic cooling of the trapped ions to very low temperatures through collisions with the ultracold neutral gas and thus without applying laser light to the ions. We observe the …
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Electro-optic Properties of Semiconductor Nano-crystals And Electro-optic Polymers And Their Applications
… ESA technique is effective to align and hold the dipoles in films and to intensify the electro-optic effect. CdSe quantum dots need 17. 5 ms to complete their physical orientation due to a rotation of the permanent dipole moment. Therefore, at lower frequencies (<100Hz), electro-optic modulation …