In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment

Sun, Qi; Boddapati, Loukya; Wang, Linan; Li, Junjie; Deepak, Francis Leonard

doi:10.3390/nano13050796

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In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment

by

Qi Sun

^1,2,†,

Loukya Boddapati

^3,†

,

Linan Wang

²,

Junjie Li

^2,4,*

and

Francis Leonard Deepak

^3,*

¹

School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China

²

Research Center for Crystal Materials, CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, CAS, Urumqi 830011, China

³

Nanostructured Materials Group, International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, 4715-330 Braga, Portugal

⁴

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

^*

Authors to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Nanomaterials 2023, 13(5), 796; https://doi.org/10.3390/nano13050796

Submission received: 27 December 2022 / Revised: 31 January 2023 / Accepted: 14 February 2023 / Published: 21 February 2023

(This article belongs to the Special Issue An Overview of the Recent Advances in Advanced Electron Microscopy Imaging, Spectroscopy and Their Related Applications)

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Abstract

Crystallization plays a critical role in determining crystal size, purity and morphology. Therefore, uncovering the growth dynamics of nanoparticles (NPs) atomically is important for the controllable fabrication of nanocrystals with desired geometry and properties. Herein, we conducted in situ atomic-scale observations on the growth of Au nanorods (NRs) by particle attachment within an aberration-corrected transmission electron microscope (AC-TEM). The results show that the attachment of spherical colloidal Au NPs with a size of about 10 nm involves the formation and growth of neck-like (NL) structures, followed by five-fold twin intermediate states and total atomic rearrangement. The statistical analyses show that the length and diameter of Au NRs can be well regulated by the number of tip-to-tip Au NPs and the size of colloidal Au NPs, respectively. The results highlight five-fold twin-involved particle attachment in spherical Au NPs with a size of 3–14 nm, and provide insights into the fabrication of Au NRs using irradiation chemistry.

Keywords: in situ observation; Au nanorod; crystal growth; particle attachment; transmission electron microscopy

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MDPI and ACS Style

Sun, Q.; Boddapati, L.; Wang, L.; Li, J.; Deepak, F.L. In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment. Nanomaterials 2023, 13, 796. https://doi.org/10.3390/nano13050796

AMA Style

Sun Q, Boddapati L, Wang L, Li J, Deepak FL. In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment. Nanomaterials. 2023; 13(5):796. https://doi.org/10.3390/nano13050796

Chicago/Turabian Style

Sun, Qi, Loukya Boddapati, Linan Wang, Junjie Li, and Francis Leonard Deepak. 2023. "In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment" Nanomaterials 13, no. 5: 796. https://doi.org/10.3390/nano13050796

APA Style

Sun, Q., Boddapati, L., Wang, L., Li, J., & Deepak, F. L. (2023). In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment. Nanomaterials, 13(5), 796. https://doi.org/10.3390/nano13050796

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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In Situ Observations Reveal the Five-fold Twin-Involved Growth of Gold Nanorods by Particle Attachment

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