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We present the method for large-area growth of single-crystalline Al films in atomic scale on GaAs substrate by using molecular beam epitaxy. The grown Al film of thickness down to 5 nm exhibits smooth surface morphology, a clear and single X-ray diffraction peak in θ–2θ scan, and nearly transparent optical response. This work open a window for ex-situ studying quantum size effect in metal film.
The plasma oxidation on single crystalline Al thin film grown by molecular beam epitaxy is presented. The dependence of oxidation rates on the N2O flux, the substrate temperature, the RF power, and the chamber pressure is studied with auger electron spectroscopy and transmission electron microscope. Our work provides a simple way to prepare a smooth nano-scale Al2O3 film on aluminum, which is a key...
This paper presents the substrate noise coupling using S-parameters measurement upto tens of GHz. Different types of the guard rings including p+ and n+ diffusion guard ring have been designed to characterize the RF performance. Compared with these schemes, deep-n-well (DNW) structures were created and discussed as well. The effect of various guard ring dimension parameters on the isolation performance...
This paper presents a compact model for p-minus substrate guard ring (psub GR) combined with p-plus guard ring (p+ GR) in lightly doped CMOS substrates. The model can be used to predict the noise suppression performance of psub GR in terms of S-parameters, which is useful for substrate noise mitigation in mixed-signal system-on-chips. The efficiency of the model has been validated by full wave electromagnetic...
Cell behaviors including adhesion, migration, proliferation, differentiation and apoptosis, etc. deeply influence tissue formation, regeneration, and even the function of whole tissue or entity. Optically-induced electrokinetic (OEK) patterning is an efficient method to guide cells to grow and form the desired structure on a substrate and hence becomes an effective approach to the study of cell behaviors...
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