In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation
Luping Tang, Chun Zhang, Chen Liao, Yiwei Liu, Yonghao Cheng, James Evans · 2023
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Description
Researchers watch tiny semiconductor crystals fuse under an electron beam in this 2023 study. The crystals, CdSe cores with CdS shells, tend to clump and sinter during processing because of their huge surface area, which can spoil the traits they were made for.
Using a microscope that films the process live, the team saw crystals drift within a nanometer or two of each other, then touch as surface atoms moved. A neck between the pair then grew fast. That pattern points to surface atom diffusion as the main driver, not the rival mechanism in which big particles eat small ones. Knowing the driver helps design ways to keep the crystals apart.
Catalog record
| CREATOR | Luping Tang, Chun Zhang, Chen Liao, Yiwei Liu, Yonghao Cheng, James Evans |
|---|---|
| YEAR | 2023 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 24 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |