Donghua University

About: Donghua University is a education organization based out in Shanghai, China. It is known for research contribution in the topics: Fiber & Nanofiber. The organization has 21155 authors who have published 21841 publications receiving 393091 citations. The organization is also known as: Dōnghuá Dàxué & China Textile University.

Quantised recursive filtering for a class of nonlinear systems with multiplicative noises and missing measurements

Abstract: This article is concerned with the recursive finite-horizon filtering problem for a class of nonlinear time-varying systems subject to multiplicative noises, missing measurements and quantisation effects. The missing measurements are modelled by a series of mutually independent random variables obeying Bernoulli distributions with possibly different occurrence probabilities. The quantisation phenomenon is described by using the logarithmic function and the multiplicative noises are considered to account for the stochastic disturbances on the system states. Attention is focused on the design of a recursive filter such that, for all multiplicative noises, missing measurements as well as quantisation effects, an upper bound for the filtering error covariance is guaranteed and such an upper bound is subsequently minimised by properly designing the filter parameters at each sampling instant. The desired filter parameters are obtained by solving two Riccati-like difference equations that are of a recursive form...

Carbon Nanotube Fiber Based Stretchable Wire-Shaped Supercapacitors

Abstract: P. Xu, Prof. J. Y. Yu, Prof. F. X. LiCollege of Textiles Donghua University Shanghai , 201620 , P. R. ChinaE-mail: fxlee@dhu.edu.cn P. Xu, T . L. Gu, Z. Y. Cao, Prof. B. Q. Wei, Prof. T.-W. ChouDepartment of Mechanical Engineering University of Delaware Newark , DE 19716 , USAE-mail: chou@udel.edu Dr. J.-H. ByunComposites Research CenterKorean Institute of Materials ScienceChangwon, 641831, South Korea Dr. W. B. Lu, Prof. Q. W. LiSuzhou Institute of Nano-Tech and Nano-BionicsSuzhou, 215123, P. R. China

Synthesis and Purification of Silver Nanowires To Make Conducting Films with a Transmittance of 99

Abstract: Metal nanowire (NW) networks have the highest performance of any solution-coatable alternative to ITO, but there is as yet no published process for producing NW films with optoelectronic performance that exceeds that of ITO. Here, we demonstrate a process for the synthesis and purification of Ag NWs that, when coated from an ink to create a transparent conducting film, exhibit properties that exceed that of ITO. The diameter, and thus optoelectronic performance, of Ag NWs produced by a polyol synthesis can be controlled by adjusting the concentration of bromide. Ag NWs with diameters of 20 nm and aspect ratios up to 2000 were obtained by adding 2.2 mM NaBr to a Ag NW synthesis, but these NWs were contaminated by nanoparticles. Selective precipitation was used to purify the NWs, resulting in a transmittance improvement as large as 4%. At 130.0 Ω sq(-1), the transmittance of the purified Ag NW film was 99.1%.