Oxidative vaporization etching for molybdenum tip formation in air

Goto, Yuto; Suizu, Rie; Noguchi, Yutaka; Yamada, Toyo Kazu

doi:10.1016/j.apsusc.2020.148642

Cited by 5 publications

(5 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A custom-built UHV-STM apparatus featuring analytical, preparation, and introduction chambers was employed for this study. , Each chamber maintained a base pressure of approximately 10 –8 Pa. The STM instrument was situated within the analytical chamber.…”

Section: Methodsmentioning

confidence: 99%

“…STM tips were fabricated from polycrystalline W (purity 99.95%), Mo (purity 99.95%), and Pt 80 Ir 20 wires with a diameter of 0.3 mm. This fabrication process involved both electrochemical etching and flame-etching techniques. , Subsequently, the prepared tips were carefully transferred into the UHV preparation chamber.…”

Section: Methodsmentioning

confidence: 99%

“…This fabrication process involved both electrochemical etching 55 and flameetching techniques. 50,56 Subsequently, the prepared tips were carefully transferred into the UHV preparation chamber.…”

Section: Home-built Uhv Stm Setupmentioning

confidence: 99%

See 2 more Smart Citations

Growth of Transition-Metal Cobalt Nanoclusters on 2D Covalent Organic Frameworks

Yamada,

Kanazawa,

Fukutani

et al. 2024

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

Two-dimensional (2D) covalent organic frameworks (COFs) fabricated through on-surface synthesis were investigated as a honeycomb nanopore template for the growth of 3d-transition-metal nanoclusters (NCs) with a size of 2 nm on a metallic substrate. The evolution of these NCs and their electronic characteristics were studied employing scanning tunneling microscopy/spectroscopy (STM/STS), angle-resolved ultraviolet photoelectron spectroscopy (ARUPS), and X-ray photoelectron spectroscopy (XPS) under an ultrahigh-vacuum (UHV) condition at room temperature. The 2D COFs were synthesized on Cu(111) substrate utilizing 1,3,5-tris(4-bromophenyl)benzene (TBB) precursors, which engendered a honeycomb nanopore array of approximately 2 nm in size. In contrast to the behavior observed in the Co/Cu( 111) system producing triangular-shaped bilayerstacking nanoclusters measuring 10−20 nm, STM imaging of Co/COFs/Cu(111) revealed the growth of Co NCs of approximately 1.5 nm within a single COF nanopore. This growth occurred without forming a monolayer film beneath the COFs, providing direct evidence that the 2D COFs on Cu(111) can effectively entrap Co atoms within the nanopore, giving rise to Co NCs. Spectroscopy measurements, including STS/UPS/XPS, confirmed the different local densities of states for Co NCs and COFs, corroborating the coexistence of Co NCs and COFs on the surface.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Growth of Transition-Metal Cobalt Nanoclusters on 2D Covalent Organic Frameworks

Yamada,

Kanazawa,

Fukutani

et al. 2024

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…We used sharp tungsten tips as STM probe tips. [30][31][32] ARPES and LEED measurements were conducted in the home-built UHV apparatus (Supplementary Notes, ESI †).…”

Section: Methodsmentioning

confidence: 99%

On-surface growth of transition-metal cobalt nanoclusters using a 2D crown-ether array

Yamada,

Nemoto,

Nishino

et al. 2024

J. Mater. Chem. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…We used sharp tungsten tips as STM probe tips. [77][78][79][80] This journal is © The Royal Society of Chemistry 2024 2.4 DFT calculation DFT calculations of possible intermediate and final conformations of the BrCR Ullmann coupling have been performed using the projector-augmented wave method as implemented in the VASP package. 81,82 The PBE exchange-correlation function was employed with a plane wave cut-off energy of 400 eV.…”

Section: Stm/sts Measurementsmentioning

confidence: 99%

Designing 2D stripe winding network through crown-ether intermediate Ullmann coupling on Cu(111) surface

Yamada,

Nemoto,

Ishii

et al. 2024

Nanoscale Horiz.

Self Cite

View full text Add to dashboard Cite

show abstract

Oxidative vaporization etching for molybdenum tip formation in air

Cited by 5 publications

References 62 publications

Growth of Transition-Metal Cobalt Nanoclusters on 2D Covalent Organic Frameworks

Growth of Transition-Metal Cobalt Nanoclusters on 2D Covalent Organic Frameworks

On-surface growth of transition-metal cobalt nanoclusters using a 2D crown-ether array

Designing 2D stripe winding network through crown-ether intermediate Ullmann coupling on Cu(111) surface

Contact Info

Product

Resources

About