Recent Advances in The Application of Focused Ion Beams

1985 ◽  
Vol 45 ◽  
Author(s):  
Kenji Gamo ◽  
Susumu Namba
Keyword(s):  
Ion Implantation ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
Ion Beam Modification ◽  
Chemical Effects ◽  
Recent Advances ◽  
Maskless Patterning

Recent advances of focused ion beam systems and their applications are presented. The applications include maskless ion implantation and various maskless patterning techniques which make use of ion induced chemical effects. These are ion beam assisted etching, deposition and ion beam modification techniques and are promising to improve patterning speed and extend applications of focused ion beams.

Maskless Patterning of Cr Films Using Focused Ion Beams

1983 ◽  
Vol 27 ◽  
Author(s):  
K. Gamo ◽  
K. Moriizumi ◽  
T. Matsui ◽  
S. Namba
Keyword(s):  
Ion Implantation ◽  
Plasma Etching ◽  
Etching Rate ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
Latent Image ◽  
Sharp Threshold ◽  
Patterning Technique ◽  
Resistant Layer ◽  
Maskless Patterning

ABSTRACTCharacteristics of maskless patterning of Cr films using focused Sb+ ion implantation have been investigated. Dose and depth dependence of the etching rate of Sb-implanted layers during plasma etching using CCl4 were measured. Sb profiles were also measured by Rutherford backscattering techniques. It was found that a sharp threshold dose exists to form an etch-resistant layer by Sb implantation. It was also found that a latent image of an Sb implanted pattern at a dose ≥3.8×1015/cm2 was developed by the plasma etching, and that Cr patterns with a thickness of a few hundred nanometers were formed by the present maskless patterning technique.

Applications of Focused Ion Beams to Optoelectronic Device Fabrication - An Overview

1988 ◽  
Vol 126 ◽  
Author(s):  
Randall L. Kubena
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Optoelectronic Device ◽  
Ion Beams ◽  
Device Fabrication ◽  
Focused Ion Beams ◽  
The Past ◽  
Device Structures ◽  
Circuit Fabrication ◽  
Major Application

ABSTRACTFocused-ion-beam (FIB) technology has been applied during the past decade to a wide variety of device and circuit fabrication procedures. The ability to perform maskless implantation, selective sputtering and deposition, and high resolution lithography with a single system has allowed FIB researchers to explore a large number of unique fabrication processes for silicon, GaAs, and heterojunction devices. Currently, exploratory studies in advanced optoelectronic device fabrication employ the largest number of diverse FIB techniques. In this paper, the major application areas of FIB technology to optoelectronic research are reviewed, and possible uses of ultrasmall (≤500 Å) ion beams in the fabrication of optoelectronic device structures with novel properties are described.

Electron and Focused Ion Beams in Thermal Science and Engineering

2008 ◽  
Author(s):  
Tae-Youl Choi ◽  
Dimos Poulikakos
Keyword(s):  
Electron Beam ◽  
Heavy Ions ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
High Energy ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
Deposition Method ◽  
Science And Engineering ◽  
Nanoscale Structures

Focused-ion-beam (FIB) is a useful tool for defining nanoscale structures. High energy heavy ions inherently exhibit destructive nature. A less destructive tool has been devised by using electron beam. FIB is mainly considered as an etching tool, while electron beam can be used for deposition purpose. In this paper, both etching and deposition method are demonstrated for applications in thermal science. Thermal conductivity of nanostructures (such as carbon nanotubes) was measured by using the FIB (and electron beam) nanolithography technique. Boiling characteristics was studied in a submicron heater that could be fabricated by using FIB.

scholarly journals Focused Ion Beams. Thin Film Growth by Low Energy Focused Ion Beam.

Hyomen Kagaku ◽  
1995 ◽  
Vol 16 (12) ◽  
pp. 724-728
Author(s):  
Shinji NAGAMACHI ◽  
Masahiro UEDA ◽  
Junzo ISHIKAWA
Keyword(s):  
Thin Film ◽  
Focused Ion Beam ◽  
Film Growth ◽  
Ion Beam ◽  
Ion Beams ◽  
Low Energy ◽  
Thin Film Growth ◽  
Focused Ion Beams

scholarly journals Material Sputtering with a Multi-Ion Species Plasma Focused Ion Beam

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Valerie Brogden ◽  
Cameron Johnson ◽  
Chad Rue ◽  
Jeremy Graham ◽  
Kurt Langworthy ◽  
...  
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
Cross Sectional ◽  
Systematic Exploration ◽  
Community Effort ◽  
Beam Currents ◽  
New Applications ◽  
Ion Species

Focused ion beams are an essential tool for cross-sectional material analysis at the microscale, preparing TEM samples, and much more. New plasma ion sources allow for higher beam currents and options to use unconventional ion species, resulting in increased versatility over a broader range of substrate materials. In this paper, we present the results of a four-material study from five different ion species at varying beam energies. This, of course, is a small sampling of the enormous variety of potential specimen and ion species combinations. We show that milling rates and texturing artifacts are quite varied. Therefore, there is a need for a systematic exploration of how different ion species mill different materials. There is so much to be done that it should be a community effort. Here, we present a publicly available automation script used to both measure sputter rates and characterize texturing artifacts as well as a collaborative database to which anyone may contribute. We also put forth some ideas for new applications of focused ion beams with novel ion species.

scholarly journals Study of ion beam induced chemical effects in silicon with a downsized high resolution X-ray spectrometer for use with focused ion beams

2016 ◽  
Vol 31 (11) ◽  
pp. 2293-2304 ◽  
Author(s):  
I. Božičević Mihalić ◽  
S. Fazinić ◽  
T. Tadić ◽  
D. Cosic ◽  
M. Jakšić
Keyword(s):  
High Resolution ◽  
Ion Beam ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
X Ray ◽  
Chemical Effects ◽  
Ccd Detector

A downsized wavelength dispersive X-ray spectrometer, employing a flat crystal and a CCD detector for use with focused ion beams has been constructed and employed to study ion beam induced chemical effects in Si K X-ray spectra from silicon and its selected compounds.

scholarly journals Focused Ion Beams. Present Status of Focused Ion Beam.

Hyomen Kagaku ◽  
1995 ◽  
Vol 16 (12) ◽  
pp. 729-734
Author(s):  
Masanori KOMURO
Keyword(s):  
Present Status ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Ion Beams ◽  
Focused Ion Beams

scholarly journals Focused Ion Beams. On the Preparation of TEM Specimens using Focused Ion Beam.

Hyomen Kagaku ◽  
1995 ◽  
Vol 16 (12) ◽  
pp. 755-760
Author(s):  
Masayoshi TARUTANI ◽  
Yoshiyuki KAIHARA ◽  
Yoshizo TAKAI ◽  
Ryuichi SHIMIZU
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Ion Beams ◽  
Focused Ion Beams

Preparation of TEM samples by focused ion beams

1995 ◽  
Vol 53 ◽  
pp. 518-519
Author(s):  
John F. Walker ◽  
J C Reiner ◽  
C Solenthaler
Keyword(s):  
Integrated Circuit ◽  
Polycrystalline Silicon ◽  
Field Effect Transistor ◽  
High Spatial Resolution ◽  
Ion Beam ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
Precise Location ◽  
Effect Transistor ◽  
Circuit Technology

The high spatial resolution available from TEM can be used with great advantage in the field of microelectronics to identify problems associated with the continually shrinking geometries of integrated circuit technology. In many cases the location of the problem can be the most problematic element of sample preparation. Focused ion beams (FIB) have previously been used to prepare TEM specimens, but not including using the ion beam imaging capabilities to locate a buried feature of interest. Here we describe how a defect has been located using the ability of a FIB to both mill a section and to search for a defect whose precise location is unknown. The defect is known from electrical leakage measurements to be a break in the gate oxide of a field effect transistor. The gate is a square of polycrystalline silicon, approximately 1μm×1μm, on a silicon dioxide barrier which is about 17nm thick. The break in the oxide can occur anywhere within that square and is expected to be less than 100nm in diameter.

Fluorocarbon Precursor for High Aspect Ratio via Milling in Focused Ion Beam Modification of Integrated Circuits

2004 ◽  
Author(s):  
Valery Ray
Keyword(s):  
Side Effects ◽  
Aspect Ratio ◽  
Integrated Circuits ◽  
High Aspect Ratio ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Enabling Technology ◽  
Si Substrate ◽  
Ion Beam Modification ◽  
The Past

Abstract Gas Assisted Etching (GAE) is the enabling technology for High Aspect Ratio (HAR) circuit access via milling in Focused Ion Beam (FIB) circuit modification. Metal interconnect layers of microelectronic Integrated Circuits (ICs) are separated by Inter-Layer Dielectric (ILD) materials, therefore HAR vias are typically milled in dielectrics. Most of the etching precursor gases presently available for GAE of dielectrics on commercial FIB systems, such as XeF2, Cl2, etc., are also effective etch enhancers for either Si, or/and some of the metals used in ICs. Therefore use of these precursors for via milling in dielectrics may lead to unwanted side effects, especially in a backside circuit edit approach. Making contacts to the polysilicon lines with traditional GAE precursors could also be difficult, if not impossible. Some of these precursors have a tendency to produce isotropic vias, especially in Si. It has been proposed in the past to use fluorocarbon gases as precursors for the FIB milling of dielectrics. Preliminary experimental evaluation of Trifluoroacetic (Perfluoroacetic) Acid (TFA, CF3COOH) as a possible etching precursor for the HAR via milling in the application to FIB modification of ICs demonstrated that highly enhanced anisotropic milling of SiO2 in HAR vias is possible. A via with 9:1 aspect ratio was milled with accurate endpoint on Si and without apparent damage to the underlying Si substrate.

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