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Golap Kalita,Sudip Adhikari,Hare Ram Aryal,Rakesh Afre,Tetsuo Soga,Maheshwar Sharon,Masayoshi Umeno 한국물리학회 2009 Current Applied Physics Vol.9 No.3
Multi-walled carbon nanotubes (MWCNTs) placed under nitrogen (N2) and argon (Ar) microwave plasma in order to functionalize covalently their side walls with nitrogen containing groups. X-ray photoelectron spectroscopy (XPS) study shows surface modification of the MWCNTs with imine, amine, nitride and amide groups grafted on the side walls. Due to the functional groups, homogenous distribution of MWCNTs in solvent could be obtained. For photovoltaic device fabrication MWCNTs film was casted over n-Si wafer and poly(3-octylthiophene) solution was infiltered. Devices with functionalized MWCNTs show short circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF) and power conversion efficiency (g) as 1.8 mA/㎠, 0.20 V, 24% and 0.086%, respectively. In the composite film functionalized MWCNTs facilitate photo induced charge separation and efficient holes transportation, suppressing recombination of photo generated charges. Multi-walled carbon nanotubes (MWCNTs) placed under nitrogen (N2) and argon (Ar) microwave plasma in order to functionalize covalently their side walls with nitrogen containing groups. X-ray photoelectron spectroscopy (XPS) study shows surface modification of the MWCNTs with imine, amine, nitride and amide groups grafted on the side walls. Due to the functional groups, homogenous distribution of MWCNTs in solvent could be obtained. For photovoltaic device fabrication MWCNTs film was casted over n-Si wafer and poly(3-octylthiophene) solution was infiltered. Devices with functionalized MWCNTs show short circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF) and power conversion efficiency (g) as 1.8 mA/㎠, 0.20 V, 24% and 0.086%, respectively. In the composite film functionalized MWCNTs facilitate photo induced charge separation and efficient holes transportation, suppressing recombination of photo generated charges.
Bhattacharyya Atanu,Goswami Arunava,Dihidar Shankar,Adhikari Sujit,Banerjee Sudip Kumar,Talapatra Soumendra Nath,Barik Bikas Ranjan,Bhattacharya Subir Kumar,Chandra Asit Kumar Korean Society of Sericultural Science 2007 International Journal of Industrial Entomology Vol.14 No.1
Hexane extract of Porteresia coarctata (Roxb.) exhibits a toxic effect on the tissues of Spodoptera litura (F) while fed at the dose of 1000 and 2000 ppm thoroughly mixing with castor leaves (Ricinus communis L) after dissolving in DMSO at late fourth instar whereas only DMSO treated castor leaves were fed to control group. The larvae were put to rear at $28^{\circ}C{\pm}1^{\circ}C$, $76{\pm}4%$ R.H. under 12 L + 12 D photoperiodic regime. In test group insects substantial reduction of protein and DNA content was marked in fat body and midgut tissues compared to DMSO treated control group. The significant biochemical alterations in the midgut tissues and fat body of test group insects indicate the insecticidal property of the said plant extract that could be tested in facilitating the phenomenal stride in Integrated Pest Management.
( Atanu Bhattacharyya ),( Arunava Goswami ),( Shankar Dihidar ),( Sujit Adhikari ),( Sudip Kumar Banerjee ),( Soumendra Nath Talapatra ),( Bikas Ranjan Barik ),( Subir Kumar Bhattacharya ),( Asit Kuma 한국잠사학회 2007 International Journal of Industrial Entomology Vol.14 No.1
Hexane extract of Porteresia coarctata (Roxb.) exhibits a toxic effect on the tissues of Spodoptera litura (F) while fed at the dose of 1000 and 2000 ppm thoroughly mixing with castor leaves (Ricinus communis L) after dissolving in DMSO at late fourth instar whereas only DMSO treated castor leaves were fed to control group. The larvae were put to rear at 28°C±1°C, 76±4% R.H. under 12 L + 12 D photoperiodic regime. In test group insects substantial reduction of protein and DNA content was marked in fat body and midgut tissues compared to DMSO treated control group. The significant biochemical alterations in the midgut tissues and fat body of test group insects indicate the insecticidal property of the said plant extract that could be tested in facilitating the phenomenal stride in Integrated Pest Management.