Vinylene Flanked Naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole Polymer for Low-Crystallinity Ambipolar Transistors

2021 ◽  
Author(s):  
Xianfeng Liang ◽  
Yanlin Chen ◽  
Xuechen Jiao ◽  
Martin Heeney ◽  
Christopher R. McNeill ◽  
...  
Keyword(s):  
Low Crystallinity

Effect of Crystallographic Quality of Grain Boundaries on Both Mechanical and Electrical Properties of Electroplated Copper Thin Film Interconnections

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Naokazu Murata ◽  
Naoki Saito ◽  
Kinji Tamakawa ◽  
Ken Suzuki ◽  
Hideo Miura
Keyword(s):  
Electrical Properties ◽  
Grain Boundaries ◽  
Fatigue Fracture ◽  
High Crystallinity ◽  
Mechanical And Electrical Properties ◽  
Copper Interconnection ◽  
Electroplated Copper ◽  
Two Parameters ◽  
Low Crystallinity

Effects of crystallographic quality of grain boundaries on mechanical and electrical properties were investigated experimentally. A novel method using two parameters of image quality (IQ) and confidence index (CI) values based on electron back-scattering diffraction (EBSD) analysis was proposed in order to evaluate crystallographic quality of grain boundaries. IQ value was defined as an index to evaluate crystallinity in region irradiated with electron beam. CI value determined existence of grain boundaries in the region. It was found that brittle intergranular fatigue fracture occurred in the film without annealing and the film annealed at 200 °C because network of grain boundaries with low crystallinity remained in these films. On the other hand, the film annealed at 400 °C caused only ductile transgranular fatigue fracture because grain boundaries with low crystallinity almost disappeared. From results of measurement of electrical properties, electrical resistivity of copper interconnection annealed at 400 °C with high crystallinity (2.09 × 10−8 Ωm) was low and electron migration (EM) resistance was high compared with an copper interconnection without annealing with low crystallinity (3.33 × 10−8 Ωm). It was clarified that the interconnection with high crystallinity had superior electrical properties. Thus, it was clarified that the crystallographic quality of grain boundaries has a strong correlation of mechanical and electrical reliability.

scholarly journals A Shish-kebab superstructure in low-crystallinity elastomer nanocomposites: Morphology regulation and load-transfer

2015 ◽  
Vol 23 (6) ◽  
pp. 537-544 ◽  
Author(s):  
Siduo Wu ◽  
Jinrong Wu ◽  
Guangsu Huang ◽  
Hui Li
Keyword(s):  
Load Transfer ◽  
Low Crystallinity

Preparation of cellulose beads with high homogeneity, low crystallinity, and tunable internal structure

Cellulose ◽  
2022 ◽  
Author(s):  
Yuanyuan Xia ◽  
Xinping Li ◽  
Yue Yuan ◽  
Jingshun Zhuang ◽  
Wenliang Wang
Keyword(s):  
Internal Structure ◽  
High Homogeneity ◽  
Low Crystallinity

scholarly journals A Facile Way for Preparation of Cellulose Beads With High Homogeneity, Low Crystallinity, and Tunable - Internal Structure

2021 ◽  
Author(s):  
Yuanyuan Xia ◽  
Xinping Li ◽  
Yue Yuan ◽  
Jingshun Zhuang ◽  
Wenliang Wang
Keyword(s):  
Crystal Form ◽  
Energy Storage Materials ◽  
Regenerated Cellulose ◽  
Protein Chromatography ◽  
Green Materials ◽  
Coagulation Mechanism ◽  
Structures And Properties ◽  
Water Holding ◽  
Water Alcohol ◽  
Low Crystallinity

Abstract The preparation of cellulose beads has attracted more and more attention in the application of advanced green materials. To obtain uniform and controllable cellulose beads, the dissolving pulp was dissolved in NMMO, and the cellulose beads were regenerated in various coagulation baths (water, alcohol, acid, NMMO, etc.) by phase conversion method. Results show that the crystal form of regenerated cellulose changes from cellulose I to cellulose II. NMMO swelling cellulose beads present low crystallinity and low water holding capacity. The coagulation mechanism of cellulose beads was clarified by a laser confocal microscopy. It is found that the whole coagulation process was from outside to inside gradually. It is a green and facile method for preparing cellulose beads with different structures and properties, which can be widely used in biomedicine, energy storage materials, and protein chromatography.

Highly selective electrochemical CO2 reduction to CO using a redox-active couple on low-crystallinity mesoporous ZnGa2O4 catalyst

2019 ◽  
Vol 7 (15) ◽  
pp. 9316-9323 ◽  
Author(s):  
Meiming Zhao ◽  
Yaliu Gu ◽  
Ping Chen ◽  
Zhenyu Xin ◽  
Heng Zhu ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Redox Active ◽  
Electrochemical Co2 Reduction ◽  
Low Crystallinity

We propose a strategy that combines mesopores and redox-active couple, Zn2+/Zn+, to effectively capture CO2 and selectively generate CO product.

An occurrence of polymorphic halloysite in granite saprolite of the Bayerischer Wald, Germany

Clay Minerals ◽  
1978 ◽  
Vol 13 (1) ◽  
pp. 67-77 ◽  
Author(s):  
B.-M. Wilke ◽  
U. Schwertmann ◽  
E. Murad
Keyword(s):  
Trace Elements ◽  
Clay Minerals ◽  
Iron Oxides ◽  
Aqueous Phase ◽  
Mixed Layer ◽  
Thin Plates ◽  
Low Crystallinity

AbstractXRD, DTA and IR patterns showed clay veins filling fissures in a granite of the Bayerischer Wald (eastern Bavaria) to consist mainly of hydrated halloysite of low crystallinity with traces of gibbsite, 2:1 (mixed layer) clay minerals and iron oxides. The halloysite forms thin plates which exhibit varying degrees and types of enrolment, resulting in platy, tubular and spheroidal crystals within the same sample. Concentrations of the trace elements Rb, Sr, Ba, Zr, Y, Ce, Pb, Zn and Cu indicate halloysite formation to have taken place via an aqueous phase under the influence of vadose waters circulating in fissures.

scholarly journals An Intrinsically Stretchable High‐Performance Polymer Semiconductor with Low Crystallinity

2019 ◽  
Vol 29 (46) ◽  
pp. 1905340 ◽  
Author(s):  
Yu Zheng ◽  
Ging‐Ji Nathan Wang ◽  
Jiheong Kang ◽  
Mark Nikolka ◽  
Hung‐Chin Wu ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Polymer ◽  
Polymer Semiconductor ◽  
Low Crystallinity

Effects of vanadium pentoxide with different crystallinities on lithium ion storage performance

CrystEngComm ◽  
2019 ◽  
Vol 21 (43) ◽  
pp. 6641-6651 ◽  
Author(s):  
Lü-Qiang Yu ◽  
Shi-Xi Zhao ◽  
Xia Wu ◽  
Qi-Long Wu ◽  
Jing-Wei Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Vanadium Pentoxide ◽  
Anode Materials ◽  
Lithium Ion ◽  
High Crystallinity ◽  
Storage Performance ◽  
Ion Storage ◽  
Low Crystallinity

V2O5 anode materials with low crystallinity release better electrochemical performance than that of V2O5 with high crystallinity.

Infrared study of goethites of varying crystallinity and particle size: II. Crystallographic and morphological changes in series of synthetic goethites

Clay Minerals ◽  
1986 ◽  
Vol 21 (2) ◽  
pp. 201-210 ◽  
Author(s):  
P. Cambier
Keyword(s):  
Particle Size ◽  
Morphological Changes ◽  
Unit Cell ◽  
Infrared Study ◽  
In Series ◽  
A Minor ◽  
Absorbance Band ◽  
Low Crystallinity

AbstractLow crystallinity of unsubstituted goethites is characterized by a small coherently diffracting domain, which may be accompanied by another type of disorder revealed by broader IR half-absorbance band widths. Inside the unit cell, the H-bond is weaker, which increases the OH stretching frequency and lowers the bending frequencies. Also, an increase in parameter a and a change in Fe-O bonds, which might correspond to a minor tilting of octahedra, occur along with a lowering of the frequency of the 630 cm−1 band.

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