Multi-Ion Beam Lithography and Processing Studies

2011 ◽  
Vol 1354 ◽  
Author(s):  
Bill R. Appleton ◽  
Sefaattin Tongay ◽  
Maxime Lemaitre ◽  
Brent Gila ◽  
David Hays ◽  
...  
Keyword(s):  
Ion Beam ◽  
Mass Separation ◽  
Morphological Transformation ◽  
University Of Florida ◽  
Temporal Precision ◽  
Ion Beam Lithography ◽  
Si Nanocrystals ◽  
Wide Range ◽  
Liquid Metal Alloy ◽  
The University

ABSTRACTThe University of Florida (UF) have recently collaborated with Raith Inc. to modify Raith’s ion beam lithography, nanofabrication and engineering (ionLiNE) station that utilizes only Ga ions, into a multi-ion beam system (MionLiNE) by adding the capabilities to use liquid metal alloy sources (LMAIS) to access a variety of ions and an EXB filter for mass separation. The MionLiNE modifications discussed below provide a wide range of spatial and temporal precision that can be used to investigate ion solid interactions under extended boundary conditions, as well as for ion lithography and nanofabrication. Here we demonstrate the ion beam lithographic capabilities of the MionLiNE for fabricating patterned arrays of Au and Si nanocrystals, with nanoscale dimensions, in SiO2 substrates, by direct implantation; and show that the same directwrite/maskless-implantation features can be used for in situ fabrication of nanoelectronic devices. Additionally, the spatial and temporal capabilities of the MionLiNE are used to explore the effects of dose rate on the long-standing surface morphological transformation that occurs in ion bombarded Ge.

First Results From A Multi-Ion Beam Lithography And Processing System At The University Of Florida

2011 ◽  
Author(s):  
Brent Gila ◽  
Bill R. Appleton ◽  
Joel Fridmann ◽  
Paul Mazarov ◽  
Jason E. Sanabia ◽  
...  
Keyword(s):  
Ion Beam ◽  
Processing System ◽  
University Of Florida ◽  
Ion Beam Lithography ◽  
First Results ◽  
The University

scholarly journals ION BEAM MATERIALS ANALYSIS AND MODIFICATIONS AT keV TO MeV ENERGIES AT THE UNIVERSITY OF NORTH TEXAS

2014 ◽  
Vol 27 ◽  
pp. 1460147 ◽  
Author(s):  
BIBHUDUTTA ROUT ◽  
MANGAL S. DHOUBHADEL ◽  
PRAKASH R. POUDEL ◽  
VENKATA C. KUMMARI ◽  
WICKRAMAARACHCHIGE J. LAKSHANTHA ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Nuclear Physics ◽  
Ion Beam ◽  
High Energy ◽  
Particle Accelerators ◽  
Educational Training ◽  
North Texas ◽  
University Of North Texas ◽  
Ion Beam Lithography ◽  
The University

The University of North Texas (UNT) Ion Beam Modification and Analysis Laboratory (IBMAL) has four particle accelerators including a National Electrostatics Corporation (NEC) 9SDH-2 3 MV tandem Pelletron, a NEC 9SH 3 MV single-ended Pelletron, and a 200 kV Cockcroft-Walton. A fourth HVEC AK 2.5 MV Van de Graaff accelerator is presently being refurbished as an educational training facility. These accelerators can produce and accelerate almost any ion in the periodic table at energies from a few keV to tens of MeV. They are used to modify materials by ion implantation and to analyze materials by numerous atomic and nuclear physics techniques. The NEC 9SH accelerator was recently installed in the IBMAL and subsequently upgraded with the addition of a capacitive-liner and terminal potential stabilization system to reduce ion energy spread and therefore improve spatial resolution of the probing ion beam to hundreds of nanometers. Research involves materials modification and synthesis by ion implantation for photonic, electronic, and magnetic applications, micro-fabrication by high energy (MeV) ion beam lithography, microanalysis of biomedical and semiconductor materials, development of highenergy ion nanoprobe focusing systems, and educational and outreach activities. An overview of the IBMAL facilities and some of the current research projects are discussed.

scholarly journals Developing a Minimalist Multilingual Full-text Digital Library Solution for Disconnected Remote Library Partners

2021 ◽  
Vol 40 (4) ◽  
Author(s):  
Todd Digby
Keyword(s):  
Digital Library ◽  
Full Text ◽  
Caribbean Region ◽  
Digital Collections ◽  
University Of Florida ◽  
Wide Range ◽  
Digital Collection ◽  
Internet Availability ◽  
Digital Library System ◽  
The University

The University of Florida (UF) George A. Smathers Libraries have been involved in a wide range of partnered digital collection projects throughout the years with a focus on collaborating with institutions across the Caribbean region. One of the countries that we have a number of digitization projects within is Cuba. One of these partnerships is with the library of the Temple Beth Shalom (Gran Sinagoga Bet Shalom) in Havana, Cuba. As part of this partnership, we have sent personnel over to Cuba to do onsite scanning and digitization of selected materials found within the institution. The digitized content from this project was brought back to UF and loaded into our University of Florida Digital Collections (UFDC) system. Because internet availability and low bandwidth are issues in Cuba, the Synagogue’s ability to access the full-text digitized content residing on UFDC was an issue. The Synagogue also did not have a local digital library system to load the newly digitized content. To respond to this need we focused on providing a minimalist technology solution that was highly portable to meet their desire to conduct full-text searches within their library on their digitized content. This article will explore the solution that was developed using a USB flash drive loaded with a PortableApps version of Zotero loaded with multilingual OCR’s documents.

Resolution Performance of Programmable Proximity Aperture MeV Ion Beam Lithography System

2007 ◽  
Vol 1020 ◽  
Author(s):  
Sergey Gorelick ◽  
Timo Sajavaara ◽  
Mikko Laitinen ◽  
Nitipon Puttaraksa ◽  
Harry J. Whitlow
Keyword(s):  
Heavy Ions ◽  
Ion Beam ◽  
Computer Control ◽  
Object Oriented ◽  
Linear Motion ◽  
Ion Beam Lithography ◽  
Edge Scattering ◽  
Edge Sharpness ◽  
The University ◽  
Lithography System

AbstractAn ion beam lithography system for light and heavy ions has been developed at the University of Jyväskylä's Accelerator Laboratory. The system employs a programmable proximity aperture to define the beam. The proximity aperture is made up of four Ta blades with precise straight edges that cut the beam in the horizontal and vertical directions. The blade positions and dimensions are controlled by a pair of high-precision linear-motion positioners. The sample is mounted on a X-Y-Z stage capable of moving with 100 nm precision steps under computer control. The resolution performance of the system is primarily governed by the proximity aperture. Pattern edge sharpness is set by the beam divergence, aperture blade straightness, and secondary and scattered particles from the aperture blade edges. Ray tracing simulations using the object oriented toolkit GEANT4 were performed to investigate the beam spatial resolution on the sample defined by the proximity aperture. The results indicate that the edge-scattering does not significantly affect the pattern edge sharpness.

Institutionalized University and Industry Partnership in Multidisciplinary Design and Build: Product and Process Realization

2001 ◽  
Author(s):  
R. Keith Stanfill ◽  
Gloria J. Wiens ◽  
William E. Lear ◽  
E. Dow Whitney
Keyword(s):  
Experiential Education ◽  
Process Design ◽  
Multidisciplinary Design ◽  
University Of Florida ◽  
Course Content ◽  
Engineering Discipline ◽  
Hardware Development ◽  
Wide Range ◽  
Product And Process ◽  
The University

Abstract The intent of this paper is to describe a unique, multidisciplinary undergraduate experiential education program developed at the University of Florida and to share program experiences from 1995 to 2000. The uniqueness of the Integrated Product and Process Design (IPPD) Program comes from the diversity of the 10 student and faculty disciplines involved, the variety of project types undertaken — including hardware, process and software orientations, the support from a variety of industries and the delivery of the course content to support such a wide range of disciplines and project definitions. The specifics presented in this paper will focus more on the hardware development than the software development. IPPD is institutionalized at the University of Florida and approximately 25% of the students within each participating engineering discipline participate.

scholarly journals The Center on Children & Families

Daedalus ◽  
2019 ◽  
Vol 148 (1) ◽  
pp. 88-92
Author(s):  
Shani M. King
Keyword(s):  
Educational Opportunity ◽  
Family Law ◽  
Legal Issues ◽  
Youth Of Color ◽  
Children And Families ◽  
University Of Florida ◽  
Wide Range ◽  
Practical Research ◽  
College Of Law ◽  
The University

The University of Florida Levin College of Law Center on Children and Families addresses the instability many children face due to a wide range of challenges. They include poverty, violence, and the criminalization of youth of color. They also include inadequate health care, substandard educational opportunity, and the general failure of systems designed to support, protect, and treat children who are classified as dependent, delinquent, or otherwise in need. The Center's model rests on five premises that Professor Barbara Woodhouse and colleagues identified in their scholarship as essential for addressing crises rather than mitigating symptoms: curriculum, scholarship, conferences, advocacy, and clinics. Over the years, the Center has held numerous conferences to advance groundbreaking, practical research on family law and children's rights and has held youth summits in connection with those conferences to engage with youth on relevant legal issues. These efforts remain at the conceptual heart/core of the Center's work.

Variable Angle Spectroscopic Ellipsometry (VASE) for the Study of Ion-Beam and Growth-Modified Solids

1987 ◽  
Vol 93 ◽  
Author(s):  
John A. Woollam ◽  
Paul G. Snyder ◽  
M. C. Rost
Keyword(s):  
Ion Beam ◽  
Polarized Light ◽  
Stepper Motor ◽  
Angle Of Incidence ◽  
Wide Range ◽  
State Of Polarization ◽  
Linearly Polarized ◽  
Variable Angle Spectroscopic Ellipsometry ◽  
The University ◽  
Elliptically Polarized

In the most commonly used form of ellipsometry, a monochromatic collimated linearly polarized light beam is directed at an angle φ to the normal of a sample under study. The specularly reflected beam is, in general, elliptically polarized, and the state of polarization is analyzed using a second polarizer and photodetector.1 Figure 1 shows a schematic of the rotating analyzer automated spectroscopic ellipsometer used at the University of Nebraska. The angle of incidence can be set over a wide range of angles, with a precision and repeatability of ±0.01 angular degrees. A computer controls the monochromator, the azimuth of a stepper motor driven polarizer, a shutter, and the digitization of the detector signal. There are several other schemes used for acquiring ellipsometric data, and these are discussed in several sources.

TEM study of boron additions to cobalt aluminide

1988 ◽  
Vol 46 ◽  
pp. 546-547
Author(s):  
Gerald B. Feldewerth
Keyword(s):  
High Temperature ◽  
Turbine Engines ◽  
Major Drawback ◽  
University Of Missouri ◽  
Specific Strength ◽  
Aerospace Applications ◽  
Wide Range ◽  
Ordered Alloys ◽  
The University ◽  
Very High

In recent years an increasing emphasis has been placed on the study of high temperature intermetallic compounds for possible aerospace applications. One group of interest is the B2 aiuminides. This group of intermetaliics has a very high melting temperature, good high temperature, and excellent specific strength. These qualities make it a candidate for applications such as turbine engines. The B2 aiuminides exist over a wide range of compositions and also have a large solubility for third element substitutional additions, which may allow alloying additions to overcome their major drawback, their brittle nature.One B2 aluminide currently being studied is cobalt aluminide. Optical microscopy of CoAl alloys produced at the University of Missouri-Rolla showed a dramatic decrease in the grain size which affects the yield strength and flow stress of long range ordered alloys, and a change in the grain shape with the addition of 0.5 % boron.

FloRunTM ‘331’ Peanut Variety

EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Barry L. Tillman
Keyword(s):  
Seed Size ◽  
Growth Habit ◽  
Yield Potential ◽  
High Yield ◽  
University Of Florida ◽  
High Oleic ◽  
Central Stem ◽  
Research And Education ◽  
The University ◽  
High Yield Potential

FloRunTM ‘331’ peanut variety was developed by the University of Florida, Institute of Food and Agricultural Sciences, North Florida Research and Education Center near Marianna, Florida.  It was released in 2016 because it combines high yield potential with excellent disease tolerance. FloRunTM ‘331’ has a typical runner growth habit with a semi-prominent central stem and medium green foliage.  It has medium runner seed size with high oleic oil chemistry.

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