Diamond-like carbon films were prepared by laser plasma vapor deposition. Raman spectroscopy was used to confirm the microstructure. The dependence of Raman spectra on the experimental conditions has been observed. Th...Diamond-like carbon films were prepared by laser plasma vapor deposition. Raman spectroscopy was used to confirm the microstructure. The dependence of Raman spectra on the experimental conditions has been observed. The ratio of the diamond component Nd to the graphite component Ng, Nd/Ng, has been deduced from the decomposition of Raman spectra. The phenomena are qualitatively explained by considering the microstructure of the films.展开更多
En Chine on désigne par "littérature contemporaine" l′ensemble de la création postérieure à 1949. Le terme de poésie chinoise d′aujourd′hui "se rattache quant à lui...En Chine on désigne par "littérature contemporaine" l′ensemble de la création postérieure à 1949. Le terme de poésie chinoise d′aujourd′hui "se rattache quant à lui à un contexte temporel nettement plus récent. A proprement parler on comprend sous cette dénomination l′ensemble des poèmes parus après octobre 76,展开更多
The effect of Aharonov-Bohm (AB) potential in a peierls-dimerized chain, namely a polyacetylene ring is discussed. It shows when the AB potential is pres-ent, the SSH Hamiltonion of a one-dimensional dimerized chain m...The effect of Aharonov-Bohm (AB) potential in a peierls-dimerized chain, namely a polyacetylene ring is discussed. It shows when the AB potential is pres-ent, the SSH Hamiltonion of a one-dimensional dimerized chain must be modified, and the total energy as well as the persistent current is affected by the magnetic flux.展开更多
文摘Diamond-like carbon films were prepared by laser plasma vapor deposition. Raman spectroscopy was used to confirm the microstructure. The dependence of Raman spectra on the experimental conditions has been observed. The ratio of the diamond component Nd to the graphite component Ng, Nd/Ng, has been deduced from the decomposition of Raman spectra. The phenomena are qualitatively explained by considering the microstructure of the films.
文摘En Chine on désigne par "littérature contemporaine" l′ensemble de la création postérieure à 1949. Le terme de poésie chinoise d′aujourd′hui "se rattache quant à lui à un contexte temporel nettement plus récent. A proprement parler on comprend sous cette dénomination l′ensemble des poèmes parus après octobre 76,
文摘The effect of Aharonov-Bohm (AB) potential in a peierls-dimerized chain, namely a polyacetylene ring is discussed. It shows when the AB potential is pres-ent, the SSH Hamiltonion of a one-dimensional dimerized chain must be modified, and the total energy as well as the persistent current is affected by the magnetic flux.
