| 1. |
- Gould, A., et al.
(författare)
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MOA-2010-BLG-523:" Failed Planet"= RS CVn Star
- 2013
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Ingår i: Astrophysical Journal. - 0004-637X. ; 763:2
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Tidskriftsartikel (refereegranskat)abstract
- The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing light curve near the peak of an A(max) similar to 265 high-magnification microlensing event. The deviations originally seemed consistent with expectations for a planetary companion to the principal lens. We combine long-term photometric monitoring with a previously published high-resolution spectrum taken near peak to demonstrate that this is an RS CVn variable, so that planetary microlensing is not required to explain the light-curve deviations. This is the first spectroscopically confirmed RS CVn star discovered in the Galactic bulge.
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| 2. |
- Jafri, S. H. M., et al.
(författare)
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Current-voltage characteristics of layer-by-layer self-assembled colloidal thin films
- 2006
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Ingår i: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 89:13
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Tidskriftsartikel (refereegranskat)abstract
- Self-organized construction of advanced materials and devices has been carried out starting with tailor-made colloidal nanoparticles as building blocks. Multilayer thin films of gold nanoparticles stabilized by glutamates and zinc sulfide nanoparticles capped with chitosan were self-organized by a modified polyelectrolyte deposition process. Resistive current-voltage characteristic was observed in devices (less than 50 layers). The conduction onset in thicker devices (> 50 layers) was found to be at applied voltages of similar to 1.6, similar to 1.94, and similar to 2.79 V for 75, 100, and 150 layer structures, respectively. Devices exhibit similar behavior in forward and reverse biases and the electrical characteristics were repeatable.
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| 3. |
- Promnimit, S., et al.
(författare)
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Conduction Properties of Layer-by-Layer Self-Assembled Multilayer Nanoparticulate Structures
- 2008
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Ingår i: Journal of Nanoelectronics and Optoelectronics. - : American Scientific Publishers. - 1555-130X .- 1555-1318. ; 3:2, s. 184-189
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Tidskriftsartikel (refereegranskat)abstract
- Nanoparticles based multilayer fabricated using layer-by-layer (LbL) self assembly process mediated through polyelectrolytes is reported as an interesting alternative for the fabrication of electronic devices. The effect of deposition cycle on the current-voltage characteristics of thin multilayer devices composed of alternating layers of chitosan-capped zinc sulphide nanoparticles (0 = 35 nm) and gold nanoparticles (0 = 20 nm), deposited onto a conducting indium tin oxide (ITO) coated glass substrate is reported. The current voltage (I-V) characteristics of multilayer devices with an increasing number of layers show an initial current blockade until an onset voltage value, which increases linearly upon the addition of the number of the layers stacked in the device. A conductive behavior of the device could be observed after exceeding the onset voltage. The conduction onset voltage is enhanced from similar to 0.14 V to similar to 5.6 V by increasing deposition cycles, from n = 5 to 100. Symmetric current-voltage characteristics can be observed both under forward and reverse bias conditions.
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