Formation of arsenic clusters in InAs nanowires with an Al<sub>2</sub>O<sub>3</sub> shell

Kim, In; Choi, Suji; Kwon, Jin-Won; Ahn, Sang Jung; Yeom, Min Sun; Lee, Ho Seong; Sangbong, Yi; Kim, Young Heon

doi:10.1039/d0ra06505f

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“…In addition, the sublimation behavior of silver and gold nanoparticles, that is, the phase transition from solid to vapor without melting to liquid has been studied. Several studies on thermal behaviors of nanomaterials have been conducted through in situ heating transmission electron microscopy (TEM) [1,3,[11][12][13][14][15][16][17]. Recent advances in in situ heating techniques in TEM have enabled researchers to explore the kinetics and/or dynamics of various specific thermal behaviors of nanomaterials by monitoring their morphological and microstructural properties in real-time with high resolution [1-5, 10, 12].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al₂O₃ shells

et al. 2021

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Understanding the dynamic thermal behavior of nanomaterials based on their unique physical and chemical properties is critical for their applications. In this study, the thermal behavior of single-crystalline InAs nanowires in an amorphous Al 2 O 3 shell was investigated by conducting in situ heating experiments in a transmission electron microscope. Two different thermodynamic patterns were observed during the in situ heating experiments: (1) continuous vaporization and condensation simultaneously at temperatures lower than 838.15 K, and (2) pure evaporation at temperatures higher than 878.15 K. During the simultaneous condensation and vaporization in closer areas in a single InAs nanowire, the front edge of the vaporization was flat, while that of the condensation actively changed with time and temperature. Pure vaporization was conducted via layer-by-layer evaporation followed by three-dimensional vaporization at the final stage. The thermal behaviors of the InAs nanowires were demonstrated from a thermodynamic point of view.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al₂O₃ shells

et al. 2021

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Formation of arsenic clusters in InAs nanowires with an Al₂O₃ shell

Abstract: InAs nanowires were broken into pieces after the quenching process; some of the pieces were composed only of As.

Cited by 1 publication

References 32 publications

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al₂O₃ shells

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al₂O₃ shells

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Formation of arsenic clusters in InAs nanowires with an Al2O3 shell

Abstract: InAs nanowires were broken into pieces after the quenching process; some of the pieces were composed only of As.

Cited by 1 publication

References 32 publications

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al2O3 shells

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al2O3 shells

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Formation of arsenic clusters in InAs nanowires with an Al₂O₃ shell

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al₂O₃ shells

Thermodynamic patterns during in-situ heating of InAs nanowires encapsulated in Al₂O₃ shells