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Showing 1 to 8 of 8 for “"molecular adsorbates"”.
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Dynamics of molecular adsorbates exposed to ultrafast thermal gradients
… with how thermal energy is transported at molecular-length scales is a relatively new area and the physics governing this process are not yet well established. The experiments presented here represent initial steps toward developing a better understanding how thermal energy travels across …
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Shock compression and flash-heating of molecular adsorbates on the picosecond time scale
… employed to monitor vibrational transitions of molecular adsorbates on metallic substrates during laser-driven shock compression and flash-heating. Adsorbates were in the form of well-ordered self-assembled monolayers (SAMs) and included molecular explosive simulants, such as nitroaromatics, and …
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AN EXPERIMENTAL STUDY OF THE EFFECTS OF SUBSTRATE POROSITY, MORPHOLOGY, AND FLEXIBILITY ON THE EQUILIBRIUM THERMODYNAMICS AND KINETICS OF ADSORPTION FOR ATOMIC AND MOLECULAR ADSORBATES
… CO2 – SWCNT is a system with a small linear molecular adsorbate with a permanent quadrupole moment adsorbing on a substrate with quasi-1D grooves and convex outer adsorption sites. Ethane-cNH is a system with a linear alkane adsorbing on a substrate with conical pores and convex outer …
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Surface Coverage and Structure of Catalytic Monolayers on Au(111) Electrodes
Finally, active molecular adsorbates are investigated. Cyclic voltammetric investigations of the $\alpha$-dodecatungstosilicate anion, which has potential applications in catalysis and corrosion inhibition, indicate that it binds to the Au(111) electrode throughout the double layer potential …
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Formation and Stabilization of Combustion-Generated Environmentally Persistent Free Radicals on Transition Metal Oxides Supported on Silica
… by the chemisorption of substituted aromatic molecular adsorbates on the metal cation center followed by electron transfer from the adsorbate to the metal ion at temperatures from 150 to 400 oC. Depending on the nature of the adsorbate and the temperature, two organic EPFRs were formed: a …
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Memory and fluctuations in chemical dynamics
… of various condensed-phase environments to molecular systems. Part I, the cornerstone of this thesis, explores the role of surface vibrations in gas-phase heterogeneous catalysis. Utilizing the Mori-Zwanzig projection operator formalism, I have developed a theory that maps surface vibrations …
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Multi-Photon Spectroscopic Studies of Molecule/Metal Interfaces and Graphene
… Two different aspects of these ultrathin molecular or atomic materials were investigated: (1) the electronic structure of molecule/metal interfaces and (2) nonlinear optical properties of graphene. For the case (1), two-photon photoemission (TPPE) using a femotosecond laser was employed to …
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Thermal and electron stimulated chemistry of complex adsorbates on metal surfaces
… cannot continue indefinitely, thus molecular devices are being used to develop smaller, faster and higher storage density memory devices. We present a thermally activated, switchable hetero-polyoxometalate (HPOM) cluster immobilised on a highly polarisable gold surface which has …