Real-Time Observation of Chemomechanical Breakdown in a Layered Nickel-Rich Oxide Cathode Realized by In Situ Scanning Electron Microscopy

2021 ◽  
pp. 1703-1710
Author(s):  
Xiaopeng Cheng ◽  
Yonghe Li ◽  
Tianci Cao ◽  
Rui Wu ◽  
Mingming Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Real Time ◽  
Oxide Cathode ◽  
Time Observation ◽  
Real Time Observation ◽  
Scanning Electron

scholarly journals Real-Time Observation of Damage Nucleation in 3D Braided Carbon/Carbon Composites

2009 ◽  
Vol 18 (4) ◽  
pp. 096369350901800 ◽  
Author(s):  
Jin Kan ◽  
Liming Wei ◽  
Songhe Meng ◽  
Chenghai Xu
Keyword(s):  
Electron Microscopy ◽  
Real Time ◽  
Fibre Bundle ◽  
Carbon Composite ◽  
Carbon Composites ◽  
Matrix Interface ◽  
Notch Tip ◽  
Time Observation ◽  
Real Time Observation ◽  
Scanning Electron

The micro mechanisms of flexure damage at the notch tip in a three-dimensionally braided carbon/carbon composite (3D–C/C) were investigated in real-time through a Scanning Electron Microscopy. It was found that the damage was nucleated in the fibre bundle/matrix interface around the notch tip. The different damage modes were found in different directions of the 3D–C/C. The x-directional flexural specimens seem to be insensitive to the pre-notch while the z-directional flexural specimens seem to be sensitive to the pre-notch. Fibre yarns acted as an obstacle to crack propagation and it was necessary to increase the load to propagate the crack through the adjacent fibre yarn. Comparing with the x-directional flexural specimens, the forces could be better transmitted in z-directional flexural specimens because the fibres of z-direction bundles can tightly adjoin to each other.

Real-time Observation of Deep Lithiation of Tungsten Oxide Nanowires by In Situ Electron Microscopy

2015 ◽  
Vol 127 (50) ◽  
pp. 15437-15440 ◽  
Author(s):  
Kuo Qi ◽  
Jiake Wei ◽  
Muhua Sun ◽  
Qianming Huang ◽  
Xiaomin Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Tungsten Oxide ◽  
Real Time ◽  
Oxide Nanowires ◽  
In Situ Electron Microscopy ◽  
Time Observation ◽  
Real Time Observation

Real-time Observation of Deep Lithiation of Tungsten Oxide Nanowires by In Situ Electron Microscopy

2015 ◽  
Vol 54 (50) ◽  
pp. 15222-15225 ◽  
Author(s):  
Kuo Qi ◽  
Jiake Wei ◽  
Muhua Sun ◽  
Qianming Huang ◽  
Xiaomin Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Tungsten Oxide ◽  
Real Time ◽  
Oxide Nanowires ◽  
In Situ Electron Microscopy ◽  
Time Observation ◽  
Real Time Observation

High-Resolution Resistance Mapping in SEM

2018 ◽  
Author(s):  
Grigore Moldovan ◽  
Wolfgang Joachimi ◽  
Guillaume Boetsch ◽  
Jörg Jatzkowski ◽  
Frank Altman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Resolution ◽  
Reference Structure ◽  
Total Resistance ◽  
Embedded Electronics ◽  
Improved Performance ◽  
Mapping Techniques ◽  
Scanning Electron

Abstract This work presents advanced resistance mapping techniques based on Scanning Electron Microscopy (SEM) with nanoprobing systems and the related embedded electronics. Focus is placed on recent advances to reduce noise and increase speed, such as integration of dedicated in situ electronics into the nanoprobing platform, as well as an important transition from current-sensitive to voltagesensitive amplification. We show that it is now possible to record resistance maps with a resistance sensitivity in the 10W range, even when the total resistance of the mapped structures is in the range of 100W. A reference structure is used to illustrate the improved performance, and a lowresistance failure case is presented as an example of analysis made possible by these developments.

scholarly journals Design and Characterization of Microscale Auxetic and Anisotropic Structures Fabricated by Multiphoton Lithography

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 446
Author(s):  
Ioannis Spanos ◽  
Zacharias Vangelatos ◽  
Costas Grigoropoulos ◽  
Maria Farsari
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Performance ◽  
Element Analysis ◽  
Mechanical Responses ◽  
Multiphoton Lithography ◽  
Anisotropic Structures ◽  
Scanning Electron

The need for control of the elastic properties of architected materials has been accentuated due to the advances in modelling and characterization. Among the plethora of unconventional mechanical responses, controlled anisotropy and auxeticity have been promulgated as a new avenue in bioengineering applications. This paper aims to delineate the mechanical performance of characteristic auxetic and anisotropic designs fabricated by multiphoton lithography. Through finite element analysis the distinct responses of representative topologies are conveyed. In addition, nanoindentation experiments observed in-situ through scanning electron microscopy enable the validation of the modeling and the observation of the anisotropic or auxetic phenomena. Our results herald how these categories of architected materials can be investigated at the microscale.

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