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Your search keyword '"Hong, Yilin"' showing total 3 results
Start Over Author "Hong, Yilin" Publisher american institute of physics
3 results on '"Hong, Yilin"'

1. Terrace morphology on fused silica surfaces by Ar+ ion bombardment with Mo co-deposition.

Author

Chen, Dekang, Yang, Gaoyuan, Li, Jinyu, Hirsch, Dietmar, Liu, Ying, Frost, Frank, and Hong, Yilin

Subjects
ION bombardment measurement, FUSED silica, MOLYBDENUM metallurgy, NANOFABRICATION, ATOMIC force microscopy
Abstract

The morphology evolution of self-organized nanopatterns induced during Ar+ ion bombardment (IB) with Mo co-deposition on fused silica (SiO2) surfaces at different incidence angles and fluences was investigated by using atomic force microscopy and transmission electron microscopy. For pure IB at incidence angles from 30° to 70°, SiO2 surfaces evolve from being flat, via ripples, to direction-transversed ripples. In contrast, at the same ion fluence and incidence angles, the simultaneous Mo co-deposition leads to significant terraced structures with significantly enhanced roughness and wavelength. Our observations show that the concurrent Mo co-deposition during IB can reduce the critical incidence angle and the fluence level of terrace formation. Owing to the guidance of the IB-induced morphology, at incidence angles where a well-ordered ripple-mode can be generated, well-ordered terrace morphology is more likely to be formed. Terraced structures are initiated and further grow until the appearance of the nonlinear phase, i.e., where the ripple amplitude is sufficiently high. The enhanced terrace morphology on smooth SiO2 results from the interplay between pure IB and Mo co-deposition. The phase separation is attributed to the formation of crystalline MoOx on the side facing the impurity. [ABSTRACT FROM AUTHOR]

Published
2018
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2. Experimental investigation of soft x-ray diffraction.

Author

Xu, Xiangdong, Hong, Yilin, Huo, Tonglin, Jiang, Shipiing, Shan, Xiaobin, Yang, Shaoguang, and Fu, Shaojun

Subjects
*X-ray diffraction, *IMAGING systems
Abstract

The experimental study on soft x-ray diffraction using gold test objects has been carried out with synchrotron radiation at NSRL. Some images, which correspond to 0, 2 and 80 mm away from a specimen, were recorded as relief pattern on photoresist with use of 3.2nm x-rays from U12A bemtine. The experimental result shows that patterns vary with the distance between specimen and photoresist detector, which is in excellent agreement with the theoretical one. [ABSTRACT FROM AUTHOR]

Published
2000

3. Soft X-ray holography at NSRL.

Author

Jiang, Shiping, Zhang, Yuxuan, Zhang, Xinyi, Fu, Shaojun, Xia, Andong, Xu, Xiangdong, and Hong, Yilin

Subjects
X-ray microscopy, X-ray holography
Abstract

Soft X-ray Microscopy station is one of the first constructed facilities at NSRL. The main instrument of the beamline is a monochromator which can provide the monochromized X-rays varying from 2.0nm to 5.0mn. Our holographic image employs the X-rays, so called “water window”, and experimental setup is arranged in a Gabor in-line way. Holograms are recorded on the photoresist polymethyl methacrylate (PMMA) and readout with ordinary light microscopes or atomic force microscopes (AFMs). They are reconstructed using optical or numerical methods. So far the holograms of some samples and their reconstructed images are acquired. Those samples include minute granules, cobweb and so on. The estimated resolution of the reconstructed images reaches the level of submicron. It is limited by the coherence of the X-rays used for these experiments. And it is possible to improve the resolution in the future. [ABSTRACT FROM AUTHOR]

Published
2000

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