Inlet MeV ion beam dependence of transmission property for a glass capillary filled with He gas

Anodisation is essential for improving surface properties of aluminium alloys and composites regarding wear and corrosion behaviour. Optimisation of the anodising process depends on microstructural constituents contained in aluminium alloys and represents a key task, consisting of the control of process parameters and electrolyte formulation. We applied the micro-capillary technique known from corrosion studies and modified it to form anodic aluminium oxide films on high-strength aluminium alloys in comparison to pure aluminium in sulphuric acid. A glass capillary with an opening of 800 μm in diameter was utilized. Corresponding electrochemical measurements during potentiodynamic and potentiostatic anodisation revealed anodic current responses similar to conventional anodisation. The measurement of film thickness was adapted to the thin anodised spots using ellipsometry and energy dispersive X-ray analysis. Cross sections prepared by focused ion beam milling confirm the thickness results and show the behaviour of intermetallic phases depending on the anodising potential. Consequently, micro-capillary anodising proved to be an effective tool for developing appropriate anodisation conditions for aluminium alloys and composites because it allows quick variation of electrolyte composition by applying low electrolyte volumes and rapid film formation due to short process durations at small areas and more flexible variation of process parameters due to the used set-up.

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Investigation of hysteresis in high current ion beam guiding through micro-glass capillary: time and dimension dependence

Journal of Physics D Applied Physics ◽

10.1088/0022-3727/48/2/025204 ◽

2014 ◽

Vol 48 (2) ◽

pp. 025204 ◽

Cited By ~ 4

Author(s):

Samit Paul ◽

Sudeep Bhattacharjee

Keyword(s):

Ion Beam ◽

High Current ◽

Glass Capillary

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Nozzle-Nanostructure Fabrication on Glass Capillary by Focused-Ion-Beam Chemical Vapor Deposition and Etching

Japanese Journal of Applied Physics ◽

10.1143/jjap.42.4107 ◽

2003 ◽

Vol 42 (Part 1, No. 6B) ◽

pp. 4107-4110 ◽

Cited By ~ 44

Author(s):

Reo Kometani ◽

Takahiko Morita ◽

Keiichiro Watanabe ◽

Kazuhiro Kanda ◽

Yuichi Haruyama ◽

...

Keyword(s):

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Focused Ion Beam ◽

Ion Beam ◽

Chemical Vapor ◽

Nanostructure Fabrication ◽

Glass Capillary

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Applications of Microbeams Produced by Tapered Glass Capillary Optics

Quantum Beam Science ◽

10.3390/qubs4020022 ◽

2020 ◽

Vol 4 (2) ◽

pp. 22 ◽

Cited By ~ 2

Author(s):

Tokihiro Ikeda

Keyword(s):

Ion Beam ◽

Transmission Mechanism ◽

Glass Capillary ◽

Self Organized ◽

Transmission Mechanisms ◽

Beam Analysis ◽

Capillary Optics ◽

Cell Surgery ◽

First Time ◽

Experimental And Theoretical Studies

Production of ion microbeams using tapered glass capillary optics was introduced more than 10 years ago. This technique has drawn attention in terms of both its peculiar transmission features and application to ion beam analysis. The transmission mechanism based on a self-organized charge-up process for keV-energy ions was observed for the first time in an experiment using a multitude of nanometer-sized capillaries in a polymer foil. The same mechanism can be seen for the transmission of keV ions through a single tapered glass capillary. The transmission experiments with keV ions showed a delayed transmission, focusing effects, guiding effects, and formation of microbeams. Experiments using MeV-energy ions always aim at applications of microbeam irradiation for material analysis, surface modification, cell surgery, and so on. In this article, the applications of MeV ion microbeams, including the fabrication method of the glass capillary, are reviewed, as well as the experimental and theoretical studies for the transmission mechanisms of keV/MeV ions.

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