Glass single-mode condition

The corresponding isocyanates were each added to the respective resin-bound amine suspended in DCM within an open glass tube. The resulting reaction mixtures were each irradiated in a single-mode microwave cavity for 2 min intervals. After each step, samples were collected for resin bead FTIR analysis. Reaction progress was indicated by increasing intensity of the new 1670 cm-1 carbonyl stretch. Table 7.2 illustrates the rate-enhancement effect for five examples microwave-assisted reactions required a maximum of 12 min in contrast to more than 2 h required under classical room temperature conditions. 

It is important to realize that for the plasmon resonance to occur the condition of two matching plasmons at the opposite interfaces of the thin metal must be met. In other words there must be a dielectric/metal interface at which an evanescent field is created. In the Kretschmann geometry that interface is created by having the metal coated on the glass prism. Likewise, the SPR condition can also be realized in a fiberoptic format with a thin metal layer deposited on a flattened single-mode optical... 

Similar ENF tests, together with transverse tension tests [65], were conducted on unidirectional E-glass/polypropylene (ICI Plytron ZM4350PA) after exposure to distilled water (ambient and 50°C) and Boca Raton sea water (ambient temperature). Maximum stable moisture content after 5 months exposure was 0.065% for sea water and 0.17/0.30% for ambient/ 50°C distilled water, respectively. The transverse tensile strength was virtually unaffected by water absorption. The mode II fracture toughness was far more sensitive to moisture absorption. Ghnl (onset of non-linearity) values for all water exposure conditions drop and can be fitted to a single curve. 

The short time mode corresponds to the glass transition. In polymers like polystyrene, a narrow distribution is observed. Ihe width of the distribution reflects the width of the distribution of the order parameter it is increased after mechanical orientation by addition of a dopant or additive, or under special glass forming conditions (hydrostatic pressure or rheomolding). The distributed relaxation times obey a compensation law, they are reduced to a single time at the compensation temperature T. The departure of from the glass transition is related to the kinetic aspect of the transition. Thermodynamic models are based on the linear relationship between the activation enthalpy and the activation entropy. 

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