TADAHIRO SUYAMA

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The electromagnetic isolation and coupling characteristics of basic structures, namely metal pads, spiral inductors, and spiral-transistors, implemented in a core-logic CMOS process are evaluated and modeled. The models provide design guidelines on the isolation characteristics of guard-rings and shield layers for RF cross-talk suppression between circuit(More)
An effective computational method based on a conventional modal expansion approach is presented for handling a multilayered dielectric grating whose profiles are multilayered and sinusoidally modulated. This structure fabricated by dielectric material is one of the useful photonic crystals. The method is based on Yasuura’s modal expansion, which is known as(More)
An overview of absorption and luminescence characteristics of Nd and Gd centers in a LiLuF4 single crystal host is provided. Single crystals doped with the above rare earth ions were prepared by micro-pulling-down technique in the form of rods a few cm long with a diameter of about 2 mm. Excitation and emission spectra and fast decay kinetics in VUV and UV(More)
Sorption and diffusion of radionuclides (RNs) in argillaceous rocks are key processes in the safe geological disposal of radioactive waste. Sorption and diffusion of Ni(II), Am(III), and Se(IV) in mudstone from the Horonobe Underground Research Laboratory were investigated using experimental and modeling approaches. Effective diffusivities obtained by means(More)
At present, few laser sources are available in the vacuum ultraviolet (VUV) region and most of them are either complicated or expensive. Among these are excimer lasers based on rare gas dimers [1]. However, limited tunability and the use of e-beam excitation impose serious experimental restrictions. Tunable radiation can be generated from nonlinear methods(More)
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