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We performed terahertz time-domain spectroscopy on glassy glucose, and successfully detected the boson peak, which is a universal feature of glassy materials. In addition, we have experimentally determined the infrared-vibration coupling coefficient (CIR(v)) using the vibrational density of states. The obtained CIR(v) shows linear frequency-dependence and the behavior deviates from the inorganic glass...
For organic field effect transistors (OFETs), pentacene is often used as a typical semiconductor material and reported to have as high carrier mobility as a-Si. Dibenzochrysene (DBC) as well as pentacene consist of only aromatic rings. DBC can be synthesized by simple procedure and has higher solubility than pentacene. We studied film morphology of DBC fabricated by deposition or spin-coating. It...
Dye-sensitized solar cell is expected as a novel type photovoltaic device which can be composed by using a plastic substrate. To obtain the plastic solar cell, sol-gel method was utilized because it is suitable to low-temperature fabrication. The equivalent circuit analysis was useful to evaluate internal electrical characteristics and effects of treatments. Mixing of Ti-precursor sol led to a decrease...
This paper reports the application of a magnetic alloy/nonmagnetic insulator multilayer film in EMI noise filters. The eddy-current skin effect in the magnetic alloy layers was used to achieve high-loss properties. The thickness of each layer and magnetic anisotropy of a CoZrNb/SiO2 multilayer film were designed such that the film would exhibit high-loss properties in the 30 to 1000 MHz frequency...
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