From thin films to shaped platelets: effects of temperature gradient on SnS synthesis

2020 ◽  
pp. 138507
Author(s):  
Thiago Carvalho ◽  
Myriano H. Oliveira ◽  
R. Magalhães-Paniago ◽  
Andre Santarosa Ferlauto
2011 ◽  
Vol 46 (10) ◽  
pp. 1223-1229 ◽  
Author(s):  
Zhixia XIAO ◽  
Lijing ZHENG ◽  
Lili YANG ◽  
Jie YAN ◽  
Hu ZHANG

2021 ◽  
Vol 5 (1) ◽  
pp. 249-258
Author(s):  
Guillaume Schweicher ◽  
Guangfeng Liu ◽  
Pierre Fastré ◽  
Roland Resel ◽  
Mamatimin Abbas ◽  
...  

A directional crystallization of C8-BTBT-C8 in a temperature gradient reduces film roughness and improves in-plane alignment.


2008 ◽  
Vol 25 (Sup 44) ◽  
pp. 31
Author(s):  
G. Hirabayashi ◽  
H. Uchino ◽  
T. Nakajima ◽  
A. Kitagawa ◽  
N. Ishii

2019 ◽  
Vol 6 (9) ◽  
pp. 190374 ◽  
Author(s):  
Yongjun Wang ◽  
Xiaoming Zhang ◽  
Hemeng Zhang ◽  
Kyuro Sasaki

This study investigates the effects of temperature gradient and coal particle size on the critical self-ignition temperature T CSIT of a coal pile packed with low-rank coal using the wire-mesh basket test to estimate T CSIT based on the Frank–Kamenetskii equation. The values of T CSIT , the temperature gradient and the apparent activation energy of different coal pile volumes packed with coal particles of different sizes are measured. The supercriticality or subcriticality of the coal is assessed using a non-dimensional index I HR based on the temperature gradient at the temperature cross-point between coal and ambient temperatures for coal piles with various volumes and particle sizes. The critical value I HRC at the boundary between supercriticality and subcriticality is determined as a function of pile volume. The coal status of supercritical or subcritical can be separated by critical value of I HR as a function of pile volume. Quantitative effects of coal particle size on T CSIT of coal piles are measured for constant pile volume. It can be concluded that a pile packed with smaller coal particles is more likely to undergo spontaneous combustion, while the chemical activation energy is not sensitive to coal particle size. Finally, the effect of coal particle size on T CSIT is represented by the inclusion of an extra term in the equation giving T CSIT for a coal pile.


Sign in / Sign up

Export Citation Format

Share Document