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Title: Impacts of Focused Ion Beam Processing on the Fabrication of Nanoscale Functionalized Probes

Journal Article · · Inorganic Chemistry

Herein, we examine the impact of Ga+ ion kinetic energy and the target material type on the extent of ion implantation and structural damage in atomic force microscopy probes made of Al2O3 and ZnO manufactured by focused ion beam (FIB) using scanning transmission electron microscopy and energy-dispersive X-ray mapping. Penetration of Ga into the Al2O3 lattice induced structural distortions and amorphization. For ZnO probes, Ga is uniformly dispersed across the surface, resulting in the formation of distinct clusters. Atom probe tomography further validates the Ga distributions in Al2O3 and ZnO nanoprobes. Complementary Monte Carlo simulations with the transport of ions in the matter program indicated that the introduction of Ga+ prompts the generation of cation and anion vacancies, an occurrence more pronounced in Al2O3 compared to ZnO. In conclusion, this study not only enriches the knowledge of ion-matter interactions, but also serves as a practical guide for the fabrication of nanoscale functionalized AFM probes.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
3109233
Report Number(s):
PNNL-SA-209097
Journal Information:
Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 15 Vol. 64; ISSN 0020-1669; ISSN 1520-510X
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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