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Title: Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface

Abstract

This paper considers the fundamentals of what happens in a solid when it is impacted by a medium-energy gallium ion. The study of the ion/sample interaction at the nanometer scale is applicable to most focused ion beam (FIB)–based work even if the FIB/sample interaction is only a step in the process, for example, micromachining or microelectronics device processing. Whereas the objective in other articles in this issue is to use the FIB tool to characterize a material or to machine a device or transmission electron microscopy sample, the goal of the FIB in this article is to have the FIB/sample interaction itself become the product. To that end, the FIB/sample interaction is considered in three categories according to geometry: below, at, and above the surface. First, the FIB ions can penetrate the top atom layer(s) and interact below the surface. Ion implantation and ion damage on flat surfaces have been comprehensively examined; however, FIB applications require the further investigation of high doses in three-dimensional profiles. Second, the ions can interact at the surface, where a morphological instability can lead to ripples and surface self-organization, which can depend on boundary conditions for site-specific and compound FIB processing. Third, the FIB maymore » interact above the surface (and/or produce secondary particles that interact above the surface). Such ion beam–assisted deposition, FIB–CVD (chemical vapor deposition), offers an elaborate complexity in three dimensions with an FIB using a gas injection system. Finally, at the nanometer scale, these three regimes—below, at, and above the surface—can require an interdependent understanding to be judiciously controlled by the FIB.« less

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Harvard Univ., Cambridge, MA (United States)
  4. Univ. Wien (Austria)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Harvard Univ., Cambridge, MA (United States); Univ. Wien (Austria)
Sponsoring Org.:
USDOE; Harvard Univ. (United States); US Army Research Office (ARO); Austrian Science Fund (FWF)
OSTI Identifier:
1427016
Report Number(s):
SAND2007-0183J
Journal ID: ISSN 0883-7694; 524271
Grant/Contract Number:  
AC04-94AL85000; W-7405-Eng-48; AC02-05CH11231; 5108379-01; MOD707501; 15872-N08
Resource Type:
Accepted Manuscript
Journal Name:
MRS Bulletin
Additional Journal Information:
Journal Volume: 32; Journal Issue: 5; Journal ID: ISSN 0883-7694
Publisher:
Materials Research Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

MoberlyChan, Warren J., Adams, David P., Aziz, Michael J., Hobler, Gerhard, and Schenkel, Thomas. Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface. United States: N. p., 2007. Web. doi:10.1557/mrs2007.66.
MoberlyChan, Warren J., Adams, David P., Aziz, Michael J., Hobler, Gerhard, & Schenkel, Thomas. Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface. United States. doi:10.1557/mrs2007.66.
MoberlyChan, Warren J., Adams, David P., Aziz, Michael J., Hobler, Gerhard, and Schenkel, Thomas. Tue . "Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface". United States. doi:10.1557/mrs2007.66. https://www.osti.gov/servlets/purl/1427016.
@article{osti_1427016,
title = {Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface},
author = {MoberlyChan, Warren J. and Adams, David P. and Aziz, Michael J. and Hobler, Gerhard and Schenkel, Thomas},
abstractNote = {This paper considers the fundamentals of what happens in a solid when it is impacted by a medium-energy gallium ion. The study of the ion/sample interaction at the nanometer scale is applicable to most focused ion beam (FIB)–based work even if the FIB/sample interaction is only a step in the process, for example, micromachining or microelectronics device processing. Whereas the objective in other articles in this issue is to use the FIB tool to characterize a material or to machine a device or transmission electron microscopy sample, the goal of the FIB in this article is to have the FIB/sample interaction itself become the product. To that end, the FIB/sample interaction is considered in three categories according to geometry: below, at, and above the surface. First, the FIB ions can penetrate the top atom layer(s) and interact below the surface. Ion implantation and ion damage on flat surfaces have been comprehensively examined; however, FIB applications require the further investigation of high doses in three-dimensional profiles. Second, the ions can interact at the surface, where a morphological instability can lead to ripples and surface self-organization, which can depend on boundary conditions for site-specific and compound FIB processing. Third, the FIB may interact above the surface (and/or produce secondary particles that interact above the surface). Such ion beam–assisted deposition, FIB–CVD (chemical vapor deposition), offers an elaborate complexity in three dimensions with an FIB using a gas injection system. Finally, at the nanometer scale, these three regimes—below, at, and above the surface—can require an interdependent understanding to be judiciously controlled by the FIB.},
doi = {10.1557/mrs2007.66},
journal = {MRS Bulletin},
number = 5,
volume = 32,
place = {United States},
year = {2007},
month = {5}
}

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