Sub-nanometer scale size-control of iron oxide nanoparticles with drying time of iron oleate

CrystEngComm ◽  
2019 ◽  
Vol 21 (27) ◽  
pp. 4063-4071 ◽  
Author(s):  
Thiruparasakthi Balakrishnan ◽  
Min-Jae Lee ◽  
Jahar Dey ◽  
Sung-Min Choi
Keyword(s):  
Decomposition Method ◽  
Large Scale ◽  
Size Control ◽  
Nanometer Scale ◽  
Reliable Control ◽  
Drying Time ◽  
Thermal Decomposition Method ◽  
Scale Size ◽  
Fine Size ◽  
Scale Step

The drying time of iron oleate as a single and reliable control parameter for the fine size control (with a sub-nanometer scale step) of monodisperse IONPs in the large-scale thermal decomposition method.

Direct large-scale synthesis of 3D hierarchical mesoporous NiO microspheres as high-performance anode materials for lithium ion batteries

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3268-3273 ◽  
Author(s):  
Zhongchao bai ◽  
Zhicheng Ju ◽  
Chunli Guo ◽  
Yitai Qian ◽  
Bin Tang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Decomposition Method ◽  
High Performance ◽  
Large Scale ◽  
Lithium Ion ◽  
Superior Performance ◽  
Thermal Decomposition Method ◽  
Large Scale Synthesis

3D hierarchical mesoporous NiO microspheres were scalably synthesized by a thermal decomposition method; they exhibit superior performance as anode materials for LIBs.

scholarly journals Evaluation of a Low-Cost Commercial Actigraph and Its Potential Use in Detecting Cultural Variations in Physical Activity and Sleep

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3774
Author(s):  
Pavlos Topalidis ◽  
Cristina Florea ◽  
Esther-Sevil Eigl ◽  
Anton Kurapov ◽  
Carlos Alberto Beltran Leon ◽  
...  
Keyword(s):  
Physical Activity ◽  
Low Income ◽  
Large Scale ◽  
Low Cost ◽  
Low Income Countries ◽  
Time Data ◽  
Cultural Variations ◽  
Step Counts ◽  
Scale Step ◽  
Potential Use

The purpose of the present study was to evaluate the performance of a low-cost commercial smartwatch, the Xiaomi Mi Band (MB), in extracting physical activity and sleep-related measures and show its potential use in addressing questions that require large-scale real-time data and/or intercultural data including low-income countries. We evaluated physical activity and sleep-related measures and discussed the potential application of such devices for large-scale step and sleep data acquisition. To that end, we conducted two separate studies. In Study 1, we evaluated the performance of MB by comparing it to the GT3X (ActiGraph, wGT3X-BT), a scientific actigraph used in research, as well as subjective sleep reports. In Study 2, we distributed the MB across four countries (Austria, Germany, Cuba, and Ukraine) and investigated physical activity and sleep among these countries. The results of Study 1 indicated that MB step counts correlated highly with the scientific GT3X device, but did display biases. In addition, the MB-derived wake-up and total-sleep-times showed high agreement with subjective reports, but partly deviated from GT3X predictions. Study 2 revealed similar MB step counts across countries, but significant later wake-up and bedtimes for Ukraine than the other countries. We hope that our studies will stimulate future large-scale sensor-based physical activity and sleep research studies, including various cultures.

scholarly journals Additive-Enhanced Exfoliation for High-Yield 2D Materials Production

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 601
Author(s):  
Dinh-Tuan Nguyen ◽  
Hsiang-An Ting ◽  
Yen-Hsun Su ◽  
Mario Hofmann ◽  
Ya-Ping Hsieh
Keyword(s):  
Large Scale ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Spectroscopic Characterization ◽  
High Yield ◽  
Nanometer Scale ◽  
Efficient Production ◽  
Device Performance ◽  
Metal Dichalcogenides ◽  
Scale Deposition

The success of van-der-Waals electronics, which combine large-scale-deposition capabilities with high device performance, relies on the efficient production of suitable 2D materials. Shear exfoliation of 2D materials’ flakes from bulk sources can generate 2D materials with low amounts of defects, but the production yield has been limited below industry requirements. Here, we introduce additive-assisted exfoliation (AAE) as an approach to significantly increase the efficiency of shear exfoliation and produce an exfoliation yield of 30%. By introducing micrometer-sized particles that do not exfoliate, the gap between rotor and stator was dynamically reduced to increase the achievable shear rate. This enhancement was applied to WS2 and MoS2 production, which represent two of the most promising 2D transition-metal dichalcogenides. Spectroscopic characterization and cascade centrifugation reveal a consistent and significant increase in 2D material concentrations across all thickness ranges. Thus, the produced WS2 films exhibit high thickness uniformity in the nanometer-scale and can open up new routes for 2D materials production towards future applications.

Size controlled synthesis of silver sulfide nanostructures by multi-solvent thermal decomposition method

2017 ◽  
Vol 468 ◽  
pp. 119-124 ◽  
Author(s):  
Mohamed Mathar Sahib Ibrahim Khaleelullah ◽  
Thangaraju Dheivasigamani ◽  
Prakash Natarajan ◽  
Yuriko Masuda ◽  
Wataru Inami ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Method ◽  
Silver Sulfide ◽  
Controlled Synthesis ◽  
Thermal Decomposition Method ◽  
Size Controlled
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