What does this research mean for the field?

The thermal oxidation of zinc nanowires yields diameter-dependent surface morphologies, where larger nanowires develop surface nanoflakes due to confinement-induced stress and shell rupture, while smaller nanowires retain smooth surfaces. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To investigate how diameter-dependent stress evolution and confinement effects during thermal oxidation alter the surface morphology of zinc oxide nanowires.

August 22, 2026ACS Applied Nano MaterialsOpen Access

Tailoring Surface Morphology of ZnO Nanowires by Confinement Effects: Implications for Gas Sensing

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Authors

VKVivekanandan Alangadu KothandanNational Yang Ming Chiao Tung University YTYi-Cheng TsaiNational Yang Ming Chiao Tung University SCShih-Hsun ChenNational Taipei University of Technology

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Implication

Experimental study demonstrates diameter-dependent surface nanoflake formation on oxidized zinc nanowires under native shell confinement, indicating potential for enhanced chemiresistive gas sensors.

Key Points

To investigate how diameter-dependent stress evolution and confinement effects during thermal oxidation alter the surface morphology of zinc oxide nanowires.
Fabricated Zn nanowires with average diameters of 97.1 nm and 252.7 nm using oxalic acid (O-AAO) and phosphoric acid (P-AAO) anodic aluminum oxide templates via vacuum die-casting.
Thermally oxidized the released nanowires at 450 °C to analyze stress accumulation, diffusion kinetics, and structural evolution.
Nanowires derived from O-AAO (97.1 nm diameter) maintained smooth, cylindrical morphologies with gradual diameter expansion during oxidation at 450 °C.
Nanowires derived from P-AAO (252.7 nm diameter) underwent extensive radial expansion and developed burst-like surface nanoflakes due to stress-assisted shell rupture and Zn extrusion.

Cite This Study

Kothandan et al. (2026) studied this question.

synapsesocial.com/papers/6a895effca7ade938187d4c1 https://doi.org/10.1021/acsanm.6c03302

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Implication

Experimental study demonstrates diameter-dependent surface nanoflake formation on oxidized zinc nanowires under native shell confinement, indicating potential for enhanced chemiresistive gas sensors.

Tailoring Surface Morphology of ZnO Nanowires by Confinement Effects: Implications for Gas Sensing

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Member takes

Implication

Key Points

Cite This Study

Tailoring Surface Morphology of ZnO Nanowires by Confinement Effects: Implications for Gas Sensing

Discussion

Member takes

Implication

Key Points

Cite This Study

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