中国科学院机构知识库网格系统: 检索

An efficient wide area imaging scheme based on spiral scanning 会议论文 OAI收割
ELECTR NETWORK, 2022-11-24
作者: Chang, Sansan; Li, Xiang; Yang, Kai

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收藏 | 浏览/下载：11/0 | 提交时间：2023/06/19

multi lens splicing circumferential scanning method spiral dynamic scanning algorithm large area efficient imaging for airborne camera

Regulating Intrinsic Electronic Structures of Transition-Metal-Based Catalysts and the Potential Applications for Electrocatalytic Water Splitting 期刊论文 OAI收割
ACS MATERIALS LETTERS, 2021, 卷号: 3, 期号: 6, 页码: 752-780
作者: Yuan, Cheng-Zong; Hui, Kwan San; Yin, Hong; Zhu, Siqi; Zhang, Jintao

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收藏 | 浏览/下载：188/0 | 提交时间：2021/12/01

HYDROGEN EVOLUTION REACTION NITROGEN-DOPED CARBON EFFICIENT BIFUNCTIONAL ELECTROCATALYST LAYERED DOUBLE HYDROXIDE SINGLE-ATOM CATALYSTS HIGH-SURFACE-AREA IN-SITU FORMATION OXYGEN EVOLUTION COBALT OXIDE ACTIVE-SITES

High-quality graphene transfer via directional etching of metal substrates 期刊论文 OAI收割
NANOSCALE, 2019, 卷号: 11, 期号: 34, 页码: 16001-16006
作者: Zhang, Xuewei; Wu, Zehao; Zheng, Haoran; Ren, Qiancheng; Zou, Zhenxing

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收藏 | 浏览/下载：47/0 | 提交时间：2019/12/18

SINGLE-CRYSTAL GRAPHENE CVD-GROWN GRAPHENE LARGE-AREA EFFICIENT TRANSFER LAYER GRAPHENE FILMS POLYMER

Establishment of a reliable transfer process for fabricating chemical vapor deposition-grown graphene films with advanced and repeatable electrical properties 期刊论文 OAI收割
RSC ADVANCES, 2018, 卷号: 8, 期号: 35, 页码: 19846-19851
作者: Wang, Wei; Sun, Dongyun; Liu, Zhaoping

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收藏 | 浏览/下载：31/0 | 提交时间：2018/12/04

Single-layer Graphene Large-area Transparent Electrodes Monolayer Graphene Copper Foils High-quality Performance Efficient

Laser cleaning of neutral attenuator plate based on low power laser diode (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China
作者: Chen Y.; Li L.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

Laser cleaning is a non-contact green and environmental cleaning method which can effectively remove particulate contaminations of sizes as small as 0.1 m without damage to the optics. But most laser cleaning devices are large and heavy also expensive due to using large lasers such as CO2 laser YAG Laser etc. In this work a low power LD was tried to clean fingerprint and dust contaminated on the surface of the attenuator glasses plates. In the laser cleaning experiment with low power diode the fingerprint grease can be efficient to be cleaned but there is no evident effect for cleaning inorganic dust. The cleaning different degree of fingerprint contaminations was investigated at the variable laser parameters including laser power and irradiation time. An optical microscope was used to analyze the cleaning effect. The results show that low power LD can effectively remove the fingerprint on the surface of absorptive-type attenuator glass plates. On the premise that the attenuator optics glasses are not damaged the cleaning area increases with the increase of radiation time and laser power. The cleaning area doesn't change much with the variation of laser frequency when the other parameters are the same. (2013) Trans Tech Publications Switzerland.

1D Coaxial Platinum/Titanium Nitride Nanotube Arrays with Enhanced Electrocatalytic Activity for the Oxygen Reduction Reaction: Towards Li-Air Batteries 期刊论文 OAI收割
CHEMSUSCHEM, 2012, 卷号: 5, 期号: 9, 页码: 1712
Dong, SM; Chen, X; Wang, S; Gu, L; Zhang, LX; Wang, XG; Zhou, XH; Liu, ZH; Han, PX; Duan, YL; Xu, HX; Yao, JH; Zhang, CJ; Zhang, KJ; Cui, GL; Chen, LQ

收藏 | 浏览/下载：26/0 | 提交时间：2013/09/17

ELECTROLYTE FUEL-CELLS HIGH-SURFACE-AREA CARBON NANOTUBES MONOLAYER ELECTROCATALYSTS PLATINUM NANOPARTICLES ANODE CATALYSTS ENERGY-STORAGE PERFORMANCE METAL EFFICIENT

A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

In order to ensure appropriate exposure time and no exposure while electric charge is transferring after taking a photograph it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle structural design and control procedure about this new focal plane shutter. Under the control of DSP the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement long life span with more than 105 operating times a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.

An 8-channel, area-efficient, low-power audio sampling rate converter (EI CONFERENCE) 会议论文 OAI收割
9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China
作者: Liu Y.; Liu Y.; Liu Y.; Wang D.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

A novel 8-channle third area-efficient next a new Timing Division Multiplexer (TMD) scheme lowers clock working rate to minimum in order to save power a novel memory addressing scheme reduces 20% data memory at least. Experiments show proposed methods could not only saved hardware resources but also reduce power consumption low-power audio sampling rate converter is proposed in this paper so it is very suitable for consumer electronics. 2009 IEEE. conversion ratio is 2:1 and 4:1. Filter design and implementation are the key points for the converter. First excluded data and coefficients memories adopting multiplier-free Arithmetic Unit (AU) and rounding methods allows its realization in a cell area of only 0.038mm 2 in 0.18 m technology

A multi-channel, area-efficient, audio sampling rate interpolator (EI CONFERENCE) 会议论文 OAI收割
2009 8th IEEE International Conference on ASIC, ASICON 2009, October 20, 2009 - October 23, 2009, Changsha, China
作者: Wang D.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

The area and power consumption of sampled rate converter are governed largely by associated digital interpolationfilters. This paper presents a novel multi-channel area-efficient audio sampling rate interpolator whose conversion ratio is 1:2 and 1:4. Several architectural and implementation features reduces the complexity of the filter and allow its realization in a die area of 0.032mm2 in 0.18 m technology meanwhile timing multiplexer scheme reduces clock frequency to minimum. Experiments show proposed methods could not only saved hardware resources but also reduce power consumption so it is very suitable for consumer electronics. 2009 IEEE.

Image compression based on biorthogonal wavelet transform (EI CONFERENCE) 会议论文 OAI收割
ISCIT 2005 - International Symposium on Communications and Information Technologies 2005, October 12, 2005 - October 14, 2005, Beijing, China
作者: Gao Y.; Liu H.; Liu H.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

A method for image compression of biorthogonal wavelet transform based on lifting scheme with SPIHT (Set Partitioning In Hierachical Trees) is proposed in this paper. Wavelet transform affords wide space for image coding algorithms because of its excellent space-frequency localization characterizations. The compact supported symmetrical and biorthogonal wavelet has linear phase so it is applied on image compression area widely. The lifting scheme is an efficient method for constructing the wavelet filter after multiresolution. Under the condition of biorthogonal biorthogonal wavelet base can be constructed freely according to the wavelet performance. And it can quicken the implementation speed of the wavelet transform. Analyzing the algorithm of lifting scheme is applying for constructing biorthogonal wavelet. Experimental results indicate that the method of the biorthogonal wavelet that has good performances with SPIHT is applying for image compression so as image synthesis performs well. 2005 IEEE.