SERRS has been developed for observing a weak enhancement of SERS.A SERS from dye molecules 1555 adsorbed on Copper surface was observed at 4880Åexcitation and this result could be qualitatively explained by the ...SERRS has been developed for observing a weak enhancement of SERS.A SERS from dye molecules 1555 adsorbed on Copper surface was observed at 4880Åexcitation and this result could be qualitatively explained by the antenna model of SERS.展开更多
The photoconductive properties of MBB-PPV/C_(60) composite films fabricated by the physical jet deposition(PJD)technique have been studied on the basis of the photoinduced charge transfer process.Under the photoex-cit...The photoconductive properties of MBB-PPV/C_(60) composite films fabricated by the physical jet deposition(PJD)technique have been studied on the basis of the photoinduced charge transfer process.Under the photoex-citation,the transverse photoconductivity of the composite films is greatly enhanced by 4 orders of magnitude due to the efficient excitation transfer process from MBB-PPV(as donor)to C_(60)(as acceptor)occurring at the interface,the separation of charges and the existence of in-layer free carriers.The results indicate that the conjugated polymer/fullerene composite films optimized by an appropriate configuration have potential applications in photoelectric devices and photonic fields.展开更多
Cr_(6+)in K_(2)Cr_(2)O_(7),(NH_(4))_(2)Cr_(2)O_(7),and K_(2)CrO_(4) aqueous solution showed the same new strong band of 794cm^(-1) in surface enhanced Raman scattering(SERS)by using SERS silver substrates.This new fea...Cr_(6+)in K_(2)Cr_(2)O_(7),(NH_(4))_(2)Cr_(2)O_(7),and K_(2)CrO_(4) aqueous solution showed the same new strong band of 794cm^(-1) in surface enhanced Raman scattering(SERS)by using SERS silver substrates.This new feature could be assigned to a surface complex of silver and Cr^(6+),for instance Ag_(2)CrO_(4).The feature of 794cm^(-1) could be a fingerprint band for detecting pollutant Cr^(6+)in water from SERS by using the SERS active substrate of silver.展开更多
Twelve new features from our Raman measurements of C_(70) have been observed by using the silver surface enhanced Raman scattering substrate with very high enhanced factor and highly sensitive Raman set.The results an...Twelve new features from our Raman measurements of C_(70) have been observed by using the silver surface enhanced Raman scattering substrate with very high enhanced factor and highly sensitive Raman set.The results and discussion in this letter would make new knowledge to vibration modes of C_(70).The experimental data of the study confirm the validity of Jishi's calculation with a small error.展开更多
基金supported by the Science Fund of the Chinese-Academy of Sciences。
文摘SERRS has been developed for observing a weak enhancement of SERS.A SERS from dye molecules 1555 adsorbed on Copper surface was observed at 4880Åexcitation and this result could be qualitatively explained by the antenna model of SERS.
基金Supported by the National Natural Science Foundation of China under Grant Nos.69687004,29890216,19774018.
文摘The photoconductive properties of MBB-PPV/C_(60) composite films fabricated by the physical jet deposition(PJD)technique have been studied on the basis of the photoinduced charge transfer process.Under the photoex-citation,the transverse photoconductivity of the composite films is greatly enhanced by 4 orders of magnitude due to the efficient excitation transfer process from MBB-PPV(as donor)to C_(60)(as acceptor)occurring at the interface,the separation of charges and the existence of in-layer free carriers.The results indicate that the conjugated polymer/fullerene composite films optimized by an appropriate configuration have potential applications in photoelectric devices and photonic fields.
文摘Cr_(6+)in K_(2)Cr_(2)O_(7),(NH_(4))_(2)Cr_(2)O_(7),and K_(2)CrO_(4) aqueous solution showed the same new strong band of 794cm^(-1) in surface enhanced Raman scattering(SERS)by using SERS silver substrates.This new feature could be assigned to a surface complex of silver and Cr^(6+),for instance Ag_(2)CrO_(4).The feature of 794cm^(-1) could be a fingerprint band for detecting pollutant Cr^(6+)in water from SERS by using the SERS active substrate of silver.
文摘Twelve new features from our Raman measurements of C_(70) have been observed by using the silver surface enhanced Raman scattering substrate with very high enhanced factor and highly sensitive Raman set.The results and discussion in this letter would make new knowledge to vibration modes of C_(70).The experimental data of the study confirm the validity of Jishi's calculation with a small error.