Building 2D inorganic-organic hybrids by combining inorganic and organic constituents with molecularlayer precision is an attractive approach to fabricate novel materials with a tailored combination of properties from...
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Building 2D inorganic-organic hybrids by combining inorganic and organic constituents with molecularlayer precision is an attractive approach to fabricate novel materials with a tailored combination of properties from both entities. Here we demonstrate the potential of the combined atomic and molecular layer deposition (ALD/MLD) technique for the state-of-the-art synthesis of such materials and to fabricate both homogeneous thin-film mixtures and nanolaminates of ZnO and the Zn-4-aminophenol inorganicorganic hybrid. The thin films are deposited by varying the number of precursor cycles during the depositions. Diethyl zinc and 4-aminophenol (AP) are used as precursors for the Zn-AP hybrid depositions, and diethyl zinc and water for the ZnO depositions. The characterization of the mixed Zn-AP and ZnO films reveals that crystallinity, density, surface roughness, chemical stability, hardness and contact modulus are sensitively altered by even a minor insertion of Zn-AP hybrid into the ZnO structure. Fabrication of Zn-AP + ZnO nanolaminates with different thicknesses of the Zn-AP and ZnO layers provides us with an even better way to control the hardness and contact modulus, and also to enhance the chemical stability of the films.
Carbon vacuum arc was used to deposit 5-25 nm thick carbon coatings on single-walled carbon nanotube (SWCNT) networks. The SWCNT bundles thus embedded in conformal coatings maintained their optical transparency and el...
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Carbon vacuum arc was used to deposit 5-25 nm thick carbon coatings on single-walled carbon nanotube (SWCNT) networks. The SWCNT bundles thus embedded in conformal coatings maintained their optical transparency and electrical conductivity. Sheet resistances of the networks were measured during the vacuum arc deposition, revealing initially a 100-fold increase, followed by significant recovery after exposing the samples to an ambient atmosphere. Nanoindentation measurements revealed improved elasticity of the network after applying the carbon coating. Pristine SWCNT networks were easily deformed permanently, but a 20 nm carbon coating strengthened the nanostructure, resulting in a fully elastic recovery from a 20 mu N load applied with a Berkovich tip. In nano-wear tests on selected areas, the coated SWCNT maintained its networking integrity after two passes raster scan at loads up to 25 mu N. On the other hand, the pristine networks were badly damaged under a 10 mu N scan load and completely displaced under 25 mu N. Raman and electron energy loss spectroscopies indicated the carbon coating on bundles to be mainly sp(2) bonded. Finite element modeling suggests that the low content of sp(3) bonds may be due to heating by the intense ion flux during the plasma pulse. (C) 2012 Elsevier Ltd. All rights reserved.
Provided are a series of BTK inhibitors, and specifically disclosed are a compound, pharmaceutically acceptable salt thereof, tautomer thereof or prodrug thereof represented by formula (I), (II), (III) or (IV).
标准号:
EP3246317(A4)
Provided are a series of BTK inhibitors, and specifically disclosed are a compound, pharmaceutically acceptable salt thereof, tautomer thereof or prodrug thereof represented by formula (I), (II), (III) or (IV).
挠性电路板(FPC)的图像采集与预处理是自动检测的基础。针对检测缺陷不同提出3种照明方案,对欲检测缺陷拥有较好成像效果,若检测所有缺陷,可采用2种方案结合分别采集图片;只有在同轴光照明下才可准确识别FPC折痕缺陷,为区别折痕与表面曲向,研究FPC表面曲向消除方法(CSE),根据FPC基材表面曲向区域挠度引起的灰度值渐变情况,以最小像素个数、最大灰度梯度、均方差为筛选条件,识别图像中的表面曲向区域,以表面曲向区域中的灰度极小值为真实灰度值,消除图像中的表面曲向。利用高斯滤波与CSE结合对图像进行预处理,图像信噪比比高斯滤波提升5.80 d B。
Gd-based amorphous compounds with wide cooling temperature span,tunable ordering temperature andnegligible magnetic or thermal hysteresis are attractive candidates for magnetic *** previous results[1] show that the re...
Gd-based amorphous compounds with wide cooling temperature span,tunable ordering temperature andnegligible magnetic or thermal hysteresis are attractive candidates for magnetic *** previous results[1] show that the refrigerant capacity (RC) value of Gd-Co-Ni amorphous alloys are much larger than those ofthe most well-known crystalline magnetic refrigeration materials,such as Gd5Si2Ge2 and La(Fe0.88Si0.12)13 *** this work,the magnetic properties and magnetocaloric effects (MCEs) of three Gd-based Gd55Co35M10(M=Mn,Fe and Ni) amorphous alloys are reported.
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