Tzu-Hsuan Chang

Works (9)

Updated: July 24th, 2023 07:55

2020 journal article

In-situ TEM study of dislocation interaction with twin boundary and retraction in twinned metallic nanowires

ACTA MATERIALIA, 196, 304–312.

By: G. Cheng n, S. Yin *, C. Li n, T. Chang n, G. Richter *, H. Gao *, Y. Zhu n 

author keywords: Dislocation slip; Twin boundary; Recoverable plasticity; MD simulations; In-situ TEM
Sources: Web Of Science, NC State University Libraries
Added: August 31, 2020

2019 journal article

Hydrogen embrittlement in metallic nanowires

NATURE COMMUNICATIONS, 10.

By: S. Yin *, G. Cheng n, T. Chang n, G. Richter *, Y. Zhu n  & H. Gao *

TL;DR: The authors combine nanomechanical testing and molecular dynamics simulations to show that hydrogen can suppress surface dislocation nucleation in silver nanowires. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: May 20, 2019

2019 journal article

In Situ Nano-thermomechanical Experiment Reveals Brittle to Ductile Transition in Silicon Nanowires

NANO LETTERS, 19(8), 5327–5334.

By: G. Cheng n, Y. Zhang *, T. Chang n, Q. Liu *, L. Chen *, W. Lu *, T. Zhu *, Y. Zhu n 

author keywords: Brittle to ductile transition; dislocation; plasticity; silicon nanowire; in situ TEM
TL;DR: In situ high resolution TEM imaging and atomistic reaction pathway modeling reveal that the unconventional ½〈110〉{001} dislocations become highly active with increasing temperature and thus play a critical role in the formation of deformation bands, leading to transition from brittle fracture to dislocation-mediated failure in Si nanowires at elevated temperatures. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: September 3, 2019

2017 journal article

Anomalous Tensile Detwinning in Twinned Nanowires

PHYSICAL REVIEW LETTERS, 19(25).

By: G. Cheng n, S. Yin *, T. Chang n, G. Richter *, H. Gao * & Y. Zhu n 

TL;DR: Using quantitative in situ transmission electron microscopy based nanomechanical testing and molecular dynamics simulations, a transition of the deformation mechanism from localized dislocation slip to delocalized plasticity via an anomalous tensile detwinning mechanism in bitwinned metallic NWs is reported. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

On the size-dependent elasticity of penta-twinned silver nanowires

EXTREME MECHANICS LETTERS, 8, 177–183.

By: T. Chang n, G. Cheng n, C. Li n & Y. Zhu n 

Contributors: T. Chang n, G. Cheng n, C. Li n & Y. Zhu n 

author keywords: Nanowires; Nanomechanics; Elasticity size effect
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 review

A review of microelectromechanical systems for nanoscale mechanical characterization

[Review of ]. JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 25(9).

By: Y. Zhu n  & T. Chang n

Contributors: Y. Zhu n  & T. Chang n

author keywords: microelectromechanical system; nanomechanics; nanostructure; nanowire
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Recoverable plasticity in penta-twinned metallic nanowires governed by dislocation nucleation and retraction

NATURE COMMUNICATIONS, 6.

By: Q. Qin n, S. Yin *, G. Cheng n, X. Li *, T. Chang n, G. Richter *, Y. Zhu n , H. Gao *

Contributors: Q. Qin n, S. Yin *, G. Cheng n, X. Li *, T. Chang n, G. Richter *, Y. Zhu n , H. Gao *

TL;DR: A dislocation-mediated, time-dependent and fully reversible plastic behaviour in penta-twinned silver nanowires is reported, which originates from the surface nucleation, propagation and retraction of partial dislocations. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 journal article

Mechanical Properties of Silicon Carbide Nanowires: Effect of Size-Dependent Defect Density

NANO LETTERS, 14(2), 754–758.

By: G. Cheng n, T. Chang n, Q. Qin n, H. Huang* & Y. Zhu n 

Contributors: G. Cheng n, T. Chang n, Q. Qin n, H. Huang* & Y. Zhu n 

author keywords: Size effect; ultrahigh strength; in situ tensile testing; brittle fracture; nanomechanics
TL;DR: The SiC NWs are found to deform linear elastically until brittle fracture, and their fracture origin is identified in the 3C structures with inclined SFs, rather than the highly defective structures. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

A microelectromechanical system for thermomechanical testing of nanostructures

APPLIED PHYSICS LETTERS, 103(26).

By: T. Chang n & Y. Zhu n 

Contributors: T. Chang n & Y. Zhu n 

UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

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