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	Coordination of stomatal control and stem water storage on plant water use in desert riparian trees 期刊论文 iSwitch采集 TREES-STRUCTURE AND FUNCTION, 2019, 卷号: 33, 期号: 3, 页码: 787-801 作者: Yu, Tengfei; Feng, Qi; Si, Jianhua; Pinkard, Elizabeth A. 收藏 \| 浏览/下载：95/0 \| 提交时间：2019/10/08 Stem water storage Stomatal control Stem diameter variations Sap flow Riparian forest Populus
	Modulating the Morphology and Electrical Properties of GaAs Nanowires via Catalyst Stabilization by Oxygen 期刊论文 OAI收割 ACS APPLIED MATERIALS & INTERFACES, 2015, 卷号: 7, 期号: 9, 页码: 5591-5597 作者: Han, Ning; Yang, Zaixing; Wang, Fengyun; Yip, SenPo; Dong, Guofa 收藏 \| 浏览/下载：38/0 \| 提交时间：2015/05/12 GaAs nanowire oxygen diameter control electronic property CMOS inverter
	Research on automatic Hartmann test of membrane mirror (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang P. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 Electrostatic membrane mirror is ultra-lightweight and easy to acquire a large diameter comparing with traditional optical elements so its development and usage is the trend of future large mirrors. In order to research the control method of the static stretching membrane mirror the surface configuration must be tested. However membrane mirror's shape is always changed by variable voltages on the electrodes and the optical properties of membrane materials using in our experiment are poor so it is difficult to test membrane mirror by interferometer and null compensator method. To solve this problem an automatic optical test procedure for membrane mirror is designed based on Hartmann screen method. The optical path includes point light source CCD camera splitter and diffuse transmittance screen. The spots' positions on the diffuse transmittance screen are pictured by CCD camera connected with computer and image segmentation and centroid solving is auto processed. The CCD camera's lens distortion is measured and fixing coefficients are given to eliminate the spots' positions recording error caused by lens distortion. To process the low sampling Hartmann test results Zernike polynomial fitting method is applied to smooth the wave front. So low frequency error of the membrane mirror can be measured then. Errors affecting the test accuracy are also analyzed in this paper. The method proposed in this paper provides a reference for surface shape detection in membrane mirror research. 2010 Copyright SPIE - The International Society for Optical Engineering.
	The room-temperature lasing of microdisk lasers (EI CONFERENCE) 会议论文 OAI收割 Optoelectronics, Materials, and Devices for Communications, November 12, 2001 - November 15, 2001, Beijing, China 作者: Lin J.; Wang L.; Wang L.; Wang L.; Liu Y. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 Multiple quantum wells (MQW) microdisk lasers are fabricated by using the methods of photolithography-etching techniques. By the CCD watching-control and micron-area detecting systems the 5m-diameter microdisk lasers was optically pumped by Ar+ pulse laser at room temperature with the 1:50 pump duty cycle. We obtained the single-mode lasing at 1.543m wavelength with threshold pump power about 200w.
	Recent progress on asphere manufacturing and testing at CIOM (EI CONFERENCE) 会议论文 OAI收割 Advanced Optical Manufacturing and Testing Technology 2000, November 1, 2000 - November 3, 2000, Chengdu, China 作者: Zhang X.; Yu J.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 The manufacturing procedure of a 500 mm in diameter f/2 hyperbolic primary mirror based on Computer-Controlled Polishing is introduced in detail. The mirror was finally polished to the shape accuracy of 13 nm rms and the surface roughness of 2 nm Ra. Testing methods and data analysis for different stages ranging from grinding to polishing are discussed. Some critical factors affecting the efficiency and accuracy of the grinding/polishing procedure are summarized. In addition the preliminary work to make large off-axis asphere mirrors is presented. The difficulties in polishing and testing for both circular aperture and rectangular aperture mirrors are previewed and a possible solution is given. To control the geometrical parameters such as radius of curvature and conic constant a new profiler has been built and it has proven very useful to improve the grinding efficiency. Finally the manufacturing of small aspheres using deterministic grinding tool is also introduced. The fine grinding procedure of LOH's asphere grinding machine is presented.