Scalable Reshaping of Diamond Particles via Programmable Nanosculpting

Tongtong Zhang; Fuqiang Sun; Yaorong Wang; Yingchi Li; Jing Wang; Zhongqiang Wang; Kwai Hei Li; Ye Zhu; Qi Wang; Lei Shao; Ngai Wong; Dangyuan Lei; Yuan Lin; Zhiqin Chu

doi:10.1021/acsnano.4c12436

Scalable Reshaping of Diamond Particles via Programmable Nanosculpting

Tongtong Zhang, Fuqiang Sun, Yaorong Wang, Yingchi Li, Jing Wang, Zhongqiang Wang, Kwai Hei Li, Ye Zhu, Qi Wang, Lei Shao, Ngai Wong, Dangyuan Lei, Yuan Lin^*, Zhiqin Chu^*

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

Diamond particles have many interesting properties and possible applications. However, producing diamond particles with well-defined shapes on a large scale is challenging because diamonds are chemically inert and extremely hard. Here, we show that air oxidation, a routine method for purifying diamonds, can be used to precisely shape diamond particles at scale. By exploiting the distinct reactivities of different crystal facets and defects inside the diamond, layer-by-layer outward-to-inward and inward-to-outward oxidation produced diverse diamond shapes including spheres, twisted surfaces, pyramidal islands, inverted pyramids, nanoflowers, and porous polygons. The nanosculpted diamonds had more and finer features that enabled them to outperform the original raw diamonds in various applications. Using experimental observations and Monte Carlo simulations, we built a shape library that guides the design and fabrication of diamond particles with well-defined features that could be critical for anticounterfeiting, optical, and other practical applications. Our study presents a simple, economical, and scalable way to produce shape-customized diamonds for various potential technologies. © 2024 American Chemical Society.

Original language	English
Pages (from-to)	35405-35417
Journal	ACS Nano
Volume	18
Issue number	52
Online published	19 Dec 2024
DOIs	https://doi.org/10.1021/acsnano.4c12436
Publication status	Published - 31 Dec 2024

Funding

Z.C. acknowledges the financial support from the National Natural Science Foundation of China (NSFC) and the Research Grants Council (RGC) of the Hong Kong Joint Research Scheme (Project No. N_HKU750/23), RGC Theme-based Research Scheme (Project No. T45-701/22-R), HKU Seed Fund, and the Health@InnoHK program of the Innovation and Technology Commission of the Hong Kong SAR Government. Y.L. thanks the financial support from the RGC General Research Fund (GRF, Project No. 17210520), the Health@InnoHK program of the Innovation and Technology Commission of the Hong Kong SAR Government, and the National Natural Science Foundation of China (Project No. 12272332). Q.W. acknowledges the financial support of the Guangdong Major Project of Basic and Applied Basic Research 2023B0303000012. D.L. acknowledges the financial support of the Research Grants Council of Hong Kong through a Collaborative Research Equipment Grant (C1015-21EF) and an Area of Excellence grant (AoE/P-701/20). The authors are grateful to Prof. Jianfang Wang and Dr. Jiapeng Zheng (Department of Physics, The Chinese University of Hong Kong) for their help with the single-particle dark-field scattering spectrum measurement in the current work.

Research Keywords

crystal defects
crystal facets
Monte Carlo simulations
nano/microdiamonds
oxidative etching
shape engineering

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abstract = "Diamond particles have many interesting properties and possible applications. However, producing diamond particles with well-defined shapes on a large scale is challenging because diamonds are chemically inert and extremely hard. Here, we show that air oxidation, a routine method for purifying diamonds, can be used to precisely shape diamond particles at scale. By exploiting the distinct reactivities of different crystal facets and defects inside the diamond, layer-by-layer outward-to-inward and inward-to-outward oxidation produced diverse diamond shapes including spheres, twisted surfaces, pyramidal islands, inverted pyramids, nanoflowers, and porous polygons. The nanosculpted diamonds had more and finer features that enabled them to outperform the original raw diamonds in various applications. Using experimental observations and Monte Carlo simulations, we built a shape library that guides the design and fabrication of diamond particles with well-defined features that could be critical for anticounterfeiting, optical, and other practical applications. Our study presents a simple, economical, and scalable way to produce shape-customized diamonds for various potential technologies. {\textcopyright} 2024 American Chemical Society.",

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AU - Zhang, Tongtong

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AU - Wang, Jing

AU - Wang, Zhongqiang

AU - Li, Kwai Hei

AU - Zhu, Ye

AU - Wang, Qi

AU - Shao, Lei

AU - Wong, Ngai

AU - Lei, Dangyuan

AU - Lin, Yuan

AU - Chu, Zhiqin

PY - 2024/12/31

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N2 - Diamond particles have many interesting properties and possible applications. However, producing diamond particles with well-defined shapes on a large scale is challenging because diamonds are chemically inert and extremely hard. Here, we show that air oxidation, a routine method for purifying diamonds, can be used to precisely shape diamond particles at scale. By exploiting the distinct reactivities of different crystal facets and defects inside the diamond, layer-by-layer outward-to-inward and inward-to-outward oxidation produced diverse diamond shapes including spheres, twisted surfaces, pyramidal islands, inverted pyramids, nanoflowers, and porous polygons. The nanosculpted diamonds had more and finer features that enabled them to outperform the original raw diamonds in various applications. Using experimental observations and Monte Carlo simulations, we built a shape library that guides the design and fabrication of diamond particles with well-defined features that could be critical for anticounterfeiting, optical, and other practical applications. Our study presents a simple, economical, and scalable way to produce shape-customized diamonds for various potential technologies. © 2024 American Chemical Society.

AB - Diamond particles have many interesting properties and possible applications. However, producing diamond particles with well-defined shapes on a large scale is challenging because diamonds are chemically inert and extremely hard. Here, we show that air oxidation, a routine method for purifying diamonds, can be used to precisely shape diamond particles at scale. By exploiting the distinct reactivities of different crystal facets and defects inside the diamond, layer-by-layer outward-to-inward and inward-to-outward oxidation produced diverse diamond shapes including spheres, twisted surfaces, pyramidal islands, inverted pyramids, nanoflowers, and porous polygons. The nanosculpted diamonds had more and finer features that enabled them to outperform the original raw diamonds in various applications. Using experimental observations and Monte Carlo simulations, we built a shape library that guides the design and fabrication of diamond particles with well-defined features that could be critical for anticounterfeiting, optical, and other practical applications. Our study presents a simple, economical, and scalable way to produce shape-customized diamonds for various potential technologies. © 2024 American Chemical Society.

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Scalable Reshaping of Diamond Particles via Programmable Nanosculpting

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