TEM-MD characterization of KDP deformation mechanisms under nanoindentation

Shengyao Yang; Liangchi Zhang; Zhonghuai Wu; Richard F. Webster; Charlie Kong; Shery L.Y. Chang

doi:10.1016/j.jeurceramsoc.2023.02.031

TEM-MD characterization of KDP deformation mechanisms under nanoindentation

Shengyao Yang, Liangchi Zhang^*, Zhonghuai Wu, Richard F. Webster, Charlie Kong, Shery L.Y. Chang

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

As a key material in an inertial confinement fusion system, potassium dihydrogen phosphate (KDP) and its component manufactured must possess extremely high surface and subsurface quality. In this letter, we present our first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM). The results are in good agreement with our Molecular Dynamics (MD) simulation predictions. The findings provide an understanding of the deformation mechanisms of KDP under nanoindentation, and offer a sensitive approach to observing electron beam sensitive materials under TEM.

Original language	English
Pages (from-to)	3844-3848
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	43
Issue number	8
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2023.02.031
Publication status	Published - Jul 2023

Keywords

KDP crystals
Molecular dynamics (MD)
Nanoindentation
Plastic deformation
Transmission electron microscopy (TEM)

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10.1016/j.jeurceramsoc.2023.02.031

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title = "TEM-MD characterization of KDP deformation mechanisms under nanoindentation",

abstract = "As a key material in an inertial confinement fusion system, potassium dihydrogen phosphate (KDP) and its component manufactured must possess extremely high surface and subsurface quality. In this letter, we present our first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM). The results are in good agreement with our Molecular Dynamics (MD) simulation predictions. The findings provide an understanding of the deformation mechanisms of KDP under nanoindentation, and offer a sensitive approach to observing electron beam sensitive materials under TEM.",

keywords = "KDP crystals, Molecular dynamics (MD), Nanoindentation, Plastic deformation, Transmission electron microscopy (TEM)",

author = "Shengyao Yang and Liangchi Zhang and Zhonghuai Wu and Webster, {Richard F.} and Charlie Kong and Chang, {Shery L.Y.}",

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T1 - TEM-MD characterization of KDP deformation mechanisms under nanoindentation

AU - Yang, Shengyao

AU - Zhang, Liangchi

AU - Wu, Zhonghuai

AU - Webster, Richard F.

AU - Kong, Charlie

AU - Chang, Shery L.Y.

PY - 2023/7

Y1 - 2023/7

N2 - As a key material in an inertial confinement fusion system, potassium dihydrogen phosphate (KDP) and its component manufactured must possess extremely high surface and subsurface quality. In this letter, we present our first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM). The results are in good agreement with our Molecular Dynamics (MD) simulation predictions. The findings provide an understanding of the deformation mechanisms of KDP under nanoindentation, and offer a sensitive approach to observing electron beam sensitive materials under TEM.

AB - As a key material in an inertial confinement fusion system, potassium dihydrogen phosphate (KDP) and its component manufactured must possess extremely high surface and subsurface quality. In this letter, we present our first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM). The results are in good agreement with our Molecular Dynamics (MD) simulation predictions. The findings provide an understanding of the deformation mechanisms of KDP under nanoindentation, and offer a sensitive approach to observing electron beam sensitive materials under TEM.

KW - KDP crystals

KW - Molecular dynamics (MD)

KW - Nanoindentation

KW - Plastic deformation

KW - Transmission electron microscopy (TEM)

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U2 - 10.1016/j.jeurceramsoc.2023.02.031

DO - 10.1016/j.jeurceramsoc.2023.02.031

M3 - Article

AN - SCOPUS:85148347851

SN - 0955-2219

VL - 43

SP - 3844

EP - 3848

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 8

ER -

TEM-MD characterization of KDP deformation mechanisms under nanoindentation

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Keywords

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