PYRAMIDS

作品数：33被引量：14H指数：2
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GaN hexagonal pyramids formed by a photo-assisted chemical etching method
《Chinese Physics B》2014年第5期588-593,共6页张士英 修向前 华雪梅 谢自力 刘斌 陈鹏 韩平 陆海 张荣 郑有炓 
Project supported by the National Basic Research Program of China(Grant Nos.2011CB301900,2012CB619304,and 2010CB327504);the National High Technology Research and Development Program of China(Grant No.2011AA03A103);the National Nature Science Foundation of China(Grant Nos.60990311,60906025,60936004,and 61176063);the Natural Science Foundation of Jiangsu Province,China(Grant Nos.BK2011010 and BK2009255)
A series of experiments were conducted to systematically study the effects of etching conditions on GaN by a con-venient photo-assisted chemical （PAC） etching method. The solution concentration has an evident influe...
关键词：hexagonal pyramids GAN photo-assisted chemical etching 
The Formation and Characterization of GaN Hexagonal Pyramids
《Chinese Physics Letters》2013年第5期116-119,共4页ZHANG Shi-Ying XIU Xiang-Qian LIN Zeng-Qin HUA Xue-Mei XIE Zi-Li ZHANG Rong ZHENG You-Dou 
the National Basic Research Program of China under Grant Nos 2011CB301900,2012CB619304 and 2010CB327504;the High-Technology Research and Development Program of China under Grant No 2011AA03A103;the National Natural Science Foundation of China under Grant Nos 60990311,60906025,60936004 and 61176063;the Natural Science Foundation of Jiangsu Province under Grant Nos BK2011010 and BK2009255.
GaN with hexagonal pyramids is fabricated using the photo-assisted electroless chemical etching method.Defective areas of the GaN substrate are selectively etched in a mixed solution of KOH and K2S2O8 under ultraviole...
关键词：PYRAMID ILLUMINATION ULTRAVIOLET 
A fusion algorithm for remote sensing images based on nonsubsampled pyramids and bidimensional empirical decomposition被引量：3
《Science China(Technological Sciences)》2010年第S1期196-204,共9页ZHANG XiaoDong 1,WANG WenBo 2,WANG DiFeng 3 & ZHANG Yu 4 1 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China 2 College of Sciences,Wuhan University of Science and Technology,Wuhan 430065,China 3State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China 4 Spatial Information Technology Application Research Institute,Changjiang River Scientific Research Institute,Wuhan 430010,China 
supported by the National Basic Research Program ofChina("973"Program)(Grant Nos.2006CB701300,2006CB701304);the China Postdoctoral Foundation(Grant No.2007041172),Hubei Natural Science Foundation(Grant No.2007ABA042);LIESMARS Special Research Fund and the Wuhan Key Scientific and Technological Project(Grant No.200810321144)
In order to improve the quality of remote sensing image fusion,a new method combining nonsubsampled Laplacian pyramid (NLP)and bidimensional empirical mode decomposition(BEMD)is proposed.First,the high resolution panc...
关键词：bidimensional empirical mode DECOMPOSITION nonsubsampled PYRAMID instantaneous frequency REMOTE sensing image FUSION 
BOUNDING PYRAMIDS AND BOUNDING CONES FOR TRIANGULAR BEZIER SURFACES
《Journal of Computational Mathematics》2000年第6期609-620,共12页Jian-song Deng Fa-lai Chen Li-li Wang 
NKBRSF on Mathematics Mechanics! (grant G1998030600);the National Natural Science Foundation of China! (grants 69603009 and 1
This paper describes practical approaches on how to construct bounding pyramids and bounding cones for triangular Bezier surfaces. Examples are provided to illustrate the process of construction and comparison is made...
关键词：triangular Bezier surface patch hodograph bounding pyramid bounding cone 
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