Browsing by Author "Huang, Y. M."

Now showing 1 - 2 of 2

NCTUns Emulation Testbed for Evaluating Real-life Applications over WiMAX Networks
(2010)
Wang, Shie-Yuan
;
Lin, C. C.
;
Koo, P. H.
;
Huang, Y. M.
;
Yang, Jen-Shun
In this paper, we design and implement a hybrid WiMAX network testbed that integrates the NCTUns network emulator with a real-life WiMAX network. This hybrid WiMAX network testbed can seamlessly connect virtual networks (emulated by NCTUns) to a real-life WiMAX network. Thus, in this testbed real-life applications on real machines can exchange data with those on emulated (virtualized) network nodes. With this unique feature, our developed testbed provides a powerful, high-fidelity, and convenient testing environment for evaluating the performances and behaviors of real applications and devices in WiMAX networks. In this paper, the architecture and methodology of the developed testbed are explained, which are general and can collaborate with any other IP-based networks. In addition, an example study on this testbed is also presented to demonstrate its usage and capabilities.
Surface roughness of sputtered ZnO films
(2006-09-01)
Lin, Y. S.
;
Hsu, K. C.
;
Huang, Y. M.
;
光電工程學系
;
Department of Photonics
ZnO films are grown on Si and glass substrates by radio-frequency (RF) magnetron sputtering. The crystalline structures are investigated by x- ray diffraction (XRD). Moreover, the roughness characteristics of the films are examined by atomic force microscopy (AFM) and field-emission scanning electron microscopy (FE-SEM). All films exhibit strong ( 002) preferential orientation. The influence of the RF power and target-to-substrate distance (D-ts) on the properties of ZnO is studied. Under the optimized conditions of the RF power and D-ts, root-mean-square (RMS) surface roughnesses of < 0.8 nm are achieved.