Optical Properties of Semiconductor Nanocrystals
... particles with the number of atoms ranging from a few atoms to several hundreds of thousands atoms. The evolution of the properties of matter from atom to crystal can be described in terms of the two steps: from atom to cluster and from cluster to crystal. The main distinctive feature of clusters is ...
... particles with the number of atoms ranging from a few atoms to several hundreds of thousands atoms. The evolution of the properties of matter from atom to crystal can be described in terms of the two steps: from atom to cluster and from cluster to crystal. The main distinctive feature of clusters is ...
Structural and Functional Characterization of Luminescent Silver
... energies of clusters containing a greater number of atoms (N > 20) show some deviation from the jellium model due to the distortion of potential well used to describe the electronic transitions in these metal NCs.17 The electronic transition in these Ag NCs leading to luminescence is attributed to t ...
... energies of clusters containing a greater number of atoms (N > 20) show some deviation from the jellium model due to the distortion of potential well used to describe the electronic transitions in these metal NCs.17 The electronic transition in these Ag NCs leading to luminescence is attributed to t ...
Parametric down-conversion devices: The coverage of the
... 50 MHz to 1 GHz). These devices are called Synchronously Pumped OPO (SPOPO), Fig. 1c. It should be emphasized that in all down-conversion devices operating with ultrashort (i.e. picosecond or femtosecond) pulses, the NLC length must be short enough so that group velocity mismatch (GVM) does not se ...
... 50 MHz to 1 GHz). These devices are called Synchronously Pumped OPO (SPOPO), Fig. 1c. It should be emphasized that in all down-conversion devices operating with ultrashort (i.e. picosecond or femtosecond) pulses, the NLC length must be short enough so that group velocity mismatch (GVM) does not se ...
Silicon Carbide
... The most common forms of SiC include powders, fibers, whiskers, coatings and single crystals. There are several methods to produce SiC depending on the product form desired and its application. Purity of the product imposes certain restrictions on the selection of the method of production. SiC powde ...
... The most common forms of SiC include powders, fibers, whiskers, coatings and single crystals. There are several methods to produce SiC depending on the product form desired and its application. Purity of the product imposes certain restrictions on the selection of the method of production. SiC powde ...
J. Phys. Chem. 1993,97, 2618
... Excited-state intramolecular proton transfer (ESIPT) has received considerable attention both experimentally and theoretically.14 The ESIPT process generally involves transfer of a hydroxyl (or amino) proton to an acceptor such as a carbonyl oxygen or a nitrogen atom in the excited state, resulting ...
... Excited-state intramolecular proton transfer (ESIPT) has received considerable attention both experimentally and theoretically.14 The ESIPT process generally involves transfer of a hydroxyl (or amino) proton to an acceptor such as a carbonyl oxygen or a nitrogen atom in the excited state, resulting ...
7.2 Radiative Recombination and Non
... p-n junction could be very close to the interface of AlGaAs/GaAs ...
... p-n junction could be very close to the interface of AlGaAs/GaAs ...
Thermal conductivity of individual silicon nanowires
... reduced. This clearly indicates that enhanced boundary scattering has a strong effect on phonon transport in Si nanowires. 共ii兲 For the 37, 56, and 115 nm diam wires, thermal conductivities reach their peak values around 210, 160, and 130 K, respectively. This is in sharp contrast to the peak of bul ...
... reduced. This clearly indicates that enhanced boundary scattering has a strong effect on phonon transport in Si nanowires. 共ii兲 For the 37, 56, and 115 nm diam wires, thermal conductivities reach their peak values around 210, 160, and 130 K, respectively. This is in sharp contrast to the peak of bul ...
Characterization of Quinine and Its Determination
... chemical quenching. Concentration quenching results from excessive absorption of either primary or fluorescent radiation by the solution. Collisional quenching may be caused by nonradiative loss of energy from the excited molecules, and the quenching agent (such as oxygen) may facilitate conversion ...
... chemical quenching. Concentration quenching results from excessive absorption of either primary or fluorescent radiation by the solution. Collisional quenching may be caused by nonradiative loss of energy from the excited molecules, and the quenching agent (such as oxygen) may facilitate conversion ...
Thermochemistry
... (ii)Dissolution of both Sodium hydroxide pellets and concentrated sulphuric (VI) acid is an exothermic process because final (T2) temperature is higher than the initial temperature (T1) thus causes a rise in temperature. The above reactions show heat loss to and heat gain from the surrounding as il ...
... (ii)Dissolution of both Sodium hydroxide pellets and concentrated sulphuric (VI) acid is an exothermic process because final (T2) temperature is higher than the initial temperature (T1) thus causes a rise in temperature. The above reactions show heat loss to and heat gain from the surrounding as il ...
Ferroelectric materials for solar energy conversion
... represents the maximum voltage which can be generated by the cell. Voc is limited (in a standard semiconductor junction) by the band gap of the absorber layer, with additional recombination losses (at open circuit, all photo-generated charges recombine). Jsc is the photo-current extracted when the v ...
... represents the maximum voltage which can be generated by the cell. Voc is limited (in a standard semiconductor junction) by the band gap of the absorber layer, with additional recombination losses (at open circuit, all photo-generated charges recombine). Jsc is the photo-current extracted when the v ...
Analysis of thermal diffusivity in aluminum (particle)
... and 40 mm, was pre-dried for 1 h in a vacuum chamber at 393 K before incorporation into the PMMA matrix. Then aluminum powder was added to the solution, stirred and mixed well. The solution was cast in a mold of dimensions larger than the ®nal ones required for the samples. The specimen was put into ...
... and 40 mm, was pre-dried for 1 h in a vacuum chamber at 393 K before incorporation into the PMMA matrix. Then aluminum powder was added to the solution, stirred and mixed well. The solution was cast in a mold of dimensions larger than the ®nal ones required for the samples. The specimen was put into ...
Spectroscopy?
... The degree to which a dipole,P, is induced by the electric field, E, is described by the molecular polarizability, P= E is related to how readily the electrons will move under the influence of an electric field with respect to the nuclei of the molecule. If the molecule undergoes some internal ...
... The degree to which a dipole,P, is induced by the electric field, E, is described by the molecular polarizability, P= E is related to how readily the electrons will move under the influence of an electric field with respect to the nuclei of the molecule. If the molecule undergoes some internal ...