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	Excitonic properties of vertically aligned ZnO nanotubes under high-density excitation (EI CONFERENCE) 会议论文 OAI收割 Lu Y. M.; Liang H. W.; Shen D. Z.; Zhang Z. Z.; Zhang J. Y.; Zhao D. X.; Liu Y. C.; Fan X. W. 收藏 \| 浏览/下载：10/0 \| 提交时间：2013/03/25 In this paper highly oriented and vertically arranged ZnO nanotubes are prepared on Al2O3 (0 0 0 1) substrate without employing any metal catalysts by plasma-assisted molecular beam epitaxy. The photoluminescence (PL) spectra at room temperature are studied under high excitation densities. Under lower excitation density (60 kW/cm2) PL spectrum shows that one strong free exciton emission (FE) locates at 3.306 eV. As the excitation density increases up to 200 kW/cm2 a new emission peak (Pn) located at low-energy side of FE is attributed to the spontaneous emission due to an exciton-exciton (Ex-E x) scattering process from two ground state excitons where one exciton is recombined by emitting a photon and the other is scattered into the excited states of n=2 3 4.... Under excitation density of 300 kW/cm 2 the stimulated emission originating from Ex-E x scattering is obtained. When the excitation density is above 580 kW/cm2 the emission from electron-hole plasma is observed in low-energy side of the P band and indicates a typical superradiation recombination processes with increasing excitation density. 2006 Elsevier B.V. All rights reserved.
	Construction and control of biomimetic robotic dolphin 会议论文 OAI收割 Orlando, FL, United states, May 15, 2006 - May 19, 2006 作者: Yu, Junzhi; Hu, Yonghui; Fan, Ruifeng; Wang, Long; Huo, Jiyan \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2017/01/24 Biomimetics Swimming Robot Robotic Dolphin propulsive Model Motion Control.
	identity-based pki scheme for machine readable travel document 会议论文 OAI收割 20th International Conference on Advanced Information Networking and Applications, Vienna, AUSTRIA, APR 18-20, Zhang Fan; Feng Deng-Guo \| 收藏 \| 浏览/下载：14/0 \| 提交时间：2011/07/28 identity-based signature PKI MRTD PKD DSI DSPK
	identity-based pki scheme for machine readable travel document 会议论文 OAI收割 20th International Conference on Advanced Information Networking and Applications, Vienna, AUSTRIA, APR 18-20, Zhang Fan; Feng Deng-Guo \| 收藏 \| 浏览/下载：10/0 \| 提交时间：2011/07/28 identity-based signature PKI MRTD PKD DSI DSPK
	A conceptual framework for product lifecycle modeling 会议论文 OAI收割 1st International Conference on Innovative Computing, Information and Control (ICICIC 2006), Beijing, China, August 30 - September 1, 2006 作者: Zhang WL(张闻雷); Fan YS(范玉顺) 收藏 \| 浏览/下载：12/0 \| 提交时间：2012/06/06
	Design for Product Lifecycle Management 会议论文 OAI收割 7th IFIP International Conference on Information Technology for Balanced Automation Systems in Manufacturing and Services, Niagara Falls, CANADA, September 4-6, 2006 作者: Zhang WL(张闻雷); Fan YS(范玉顺) 收藏 \| 浏览/下载：13/0 \| 提交时间：2012/06/06
	Nuclear physics programs at HIRFL-CSRm: A status report 会议论文 OAI收割 Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai, PEOPLES R CHINA, MAY 16-20, 2006 作者: Xiao, Z. G.; Xu, H. S.; Yao, N.; Zheng, C.; Duan, L. M. \| 收藏 \| 浏览/下载：5/0 \| 提交时间：2018/08/20 internal target external target spectrometer