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Synergy between graphene and Au nanoparticles (heterojunction) towards quenching, improving Raman signal, and UV light sensing.
Dalfovo MC, Lacconi GI, Moreno M, Yappert MC, Sumanasekera GU, Salvarezza RC, Ibañez FJ. Dalfovo MC, et al. ACS Appl Mater Interfaces. 2014 May 14;6(9):6384-91. doi: 10.1021/am405753t. Epub 2014 Apr 30. ACS Appl Mater Interfaces. 2014. PMID: 24749787
Post-synthesis treatments of G with PMMA and ozone (O3) showed 1 and 6 orders of magnitude decrease in film conductivity, respectively. The heterojunction formation with Au NPs had no major effect on G conductivity. In this work is demonstrated that G quenche …
Post-synthesis treatments of G with PMMA and ozone (O3) showed 1 and 6 orders of magnitude decrease in film conductivity, respectivel …
Effect of estradiol and dihydrotestosterone on hypergravity-induced MAPK signaling and occludin expression in human umbilical vein endothelial cells.
Sumanasekera WK, Zhao L, Ivanova M, Morgan DD, Noisin EL, Keynton RS, Klinge CM. Sumanasekera WK, et al. Cell Tissue Res. 2006 May;324(2):243-53. doi: 10.1007/s00441-005-0113-0. Epub 2006 Jan 24. Cell Tissue Res. 2006. PMID: 16432714
The goal of this study has been to determine whether estradiol (E(2)) and dihydrotesterone (DHT) alter human umbilical vein ECs (HUVECs) responses to short term (10 min) hypergravity (1-3 g) mimicking the g force experienced by astronauts during liftoff. ...Liftoff …
The goal of this study has been to determine whether estradiol (E(2)) and dihydrotesterone (DHT) alter human umbilical vein ECs (HUVECs) res …
Long term effects of salt on activity, population structure and floc characteristics in enriched bacterial cultures of nitrifiers.
Moussa MS, Sumanasekera DU, Ibrahim SH, Lubberding HJ, Hooijmans CM, Gijzen HJ, van Loosdrecht MC. Moussa MS, et al. Water Res. 2006 Apr;40(7):1377-88. doi: 10.1016/j.watres.2006.01.029. Epub 2006 Mar 13. Water Res. 2006. PMID: 16530803
The activities of ammonia and nitrite oxidizers dropped 36% and 11%, respectively, at salt concentrations of 10 g Cl(-)/L. At 40 g Cl(-)/L inhibition reached 95% of salt free activity for ammonia and nitrite oxidizers in both adapted and non-adapted reactors. ...Aft …
The activities of ammonia and nitrite oxidizers dropped 36% and 11%, respectively, at salt concentrations of 10 g Cl(-)/L. At 40 g …
Solution phase synthesis and intense pulsed light sintering and reduction of a copper oxide ink with an encapsulating nickel oxide barrier.
Jha M, Dharmadasa R, Draper GL, Sherehiy A, Sumanasekera G, Amos D, Druffel T. Jha M, et al. Nanotechnology. 2015 May 1;26(17):175601. doi: 10.1088/0957-4484/26/17/175601. Epub 2015 Apr 9. Nanotechnology. 2015. PMID: 25854751
The synthesis results in a simple technique (easily commercializable, tested at a 10 g scale) with highly controllable layer thicknesses on a 20 nm copper oxide nanoparticle. ...
The synthesis results in a simple technique (easily commercializable, tested at a 10 g scale) with highly controllable layer thicknes …
In situ study of hydrogenation of graphene and new phases of localization between metal-insulator transitions.
Jayasingha R, Sherehiy A, Wu SY, Sumanasekera GU. Jayasingha R, et al. Nano Lett. 2013 Nov 13;13(11):5098-105. doi: 10.1021/nl402272b. Epub 2013 Oct 3. Nano Lett. 2013. PMID: 24066976
For weak hydrogenation, the transport is seen to be governed by electron diffusion, and low-temperature transport properties show metallic behavior (conductance G remains nonzero as T 0). For strong hydrogenation, the transport is found to be describable by variable range …
For weak hydrogenation, the transport is seen to be governed by electron diffusion, and low-temperature transport properties show metallic b …