The Electrical and Computer Engineering Department at UTEP is building capabilities in power and energy systems through new research initiatives, courses, and a proposed new laboratory. The department has received funding and tools to support modeling and simulation of power grid and renewable energy systems. The chair aims to strategically grow the department's expertise in power electronics and its applications to control power systems through faculty hires and new degree concentrations.
High-throughput Quantum Chemistry and Virtual Screening for Lithium Ion Batte...BIOVIA
The use of virtual structure libraries for computational screening to identify lead systems for further investigation has become a standard approach in drug discovery. Transferring this paradigm to challenges in material science is a recent possibility due to advances in the speed of computational resources and the efficiency and stability of materials modeling packages. This makes it possible for individual calculation steps to be executed in sequence comprising a high-throughput quantum chemistry workflow, in which material systems of varying structure and composition are analyzed in an automated fashion with the results collected in a growing data record. This record can then be sorted and mined to identify lead candidates and establish critical structure-property limits within a given chemical design space. To-date, only a small number of studies have been reported in which quantum chemical calculations are used in a high-throughput fashion to compute properties and screen for optimal materials solutions. However, with time, high-throughput computational screening will become central to advanced materials research.
In this presentation, the use of high-throughput quantum chemistry to analyze and screen a materials structure library is demonstrated for Li-Ion battery additives based on ethylene carbonate (EC).
Presentation at the 42nd HPC User Forum 6-8 Sept 2011. Why do commercial customers need to do simulation, why HPC is important. Presents examples in protein-ligand binding, fuel cells, batteries, sensors
Plastic Logic at the 12th Microelectronics AcademyPlastic Logic
Plastic Logic's Director of Process Engineering, Dr. Octavio Trovarelli gave an introduction to OTFTs and Plastic Logic's flexible display technology at the 12th Microelectronics Academy in Dresden.
High-throughput Quantum Chemistry and Virtual Screening for Lithium Ion Batte...BIOVIA
The use of virtual structure libraries for computational screening to identify lead systems for further investigation has become a standard approach in drug discovery. Transferring this paradigm to challenges in material science is a recent possibility due to advances in the speed of computational resources and the efficiency and stability of materials modeling packages. This makes it possible for individual calculation steps to be executed in sequence comprising a high-throughput quantum chemistry workflow, in which material systems of varying structure and composition are analyzed in an automated fashion with the results collected in a growing data record. This record can then be sorted and mined to identify lead candidates and establish critical structure-property limits within a given chemical design space. To-date, only a small number of studies have been reported in which quantum chemical calculations are used in a high-throughput fashion to compute properties and screen for optimal materials solutions. However, with time, high-throughput computational screening will become central to advanced materials research.
In this presentation, the use of high-throughput quantum chemistry to analyze and screen a materials structure library is demonstrated for Li-Ion battery additives based on ethylene carbonate (EC).
Presentation at the 42nd HPC User Forum 6-8 Sept 2011. Why do commercial customers need to do simulation, why HPC is important. Presents examples in protein-ligand binding, fuel cells, batteries, sensors
Plastic Logic at the 12th Microelectronics AcademyPlastic Logic
Plastic Logic's Director of Process Engineering, Dr. Octavio Trovarelli gave an introduction to OTFTs and Plastic Logic's flexible display technology at the 12th Microelectronics Academy in Dresden.
Poster presentation of the scope, technological targets and innovative aspects of NHPON project, supported by The Greek
General Secretariat for Research and Technology,
Ministry of Education, through the programme EPANII/
ESPA: “SYNERGASIA”, project 09-SYN-42-630
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Poster presentation of the scope, technological targets and innovative aspects of NHPON project, supported by The Greek
General Secretariat for Research and Technology,
Ministry of Education, through the programme EPANII/
ESPA: “SYNERGASIA”, project 09-SYN-42-630
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
To evolve beyond a dependency on integration packs as the definition vehicle for workflow tasks, to overcome scaling and multi-tenant limitations, and to provide for effective web-based remote Runbook administration, a new paradigm for achieving automation in a Microsoft network is emerging. The name of this new technology is Service Management Automation. Let’s have a look during this session at the differences and when to use SMA or Orchestrator.
Learn how to easily deploy your own System Center demo lab with just a few click using the PowerShell Deployment Toolkit (PDT). Next, spend a few minutes using every System Center 2012 R2 component, including Virtual Machine Manager, Operations Manager, Configuration Manager, Service Manager, App Controller, Data Protection Manager, and Endpoint Protection. Finally, connect several systems together to create your own Orchestrator Runbook.
Module PHY6002 Inorganic Semiconductor Nanostructures
Lectures 7, 8, 9 and 10
1
Lecture 7 – The fabrication of semiconductor
nanostructures I
Introduction
In this lecture we will look at the techniques used to fabricate semiconductor
nanostructures. The well-established epitaxial methods used to produce
quantum wells will be described. The main techniques applied to produce
quantum wires and quantum dots will be discussed, with a comparison of their
relative advantages and disadvantages. In the next lecture we will look in
detail at the most successful technique used to produce quantum dots, self-
organisation.
Epitaxial techniques
There are two well established epitaxial growth techniques used to produce
high quality quantum wells: molecular beam epitaxy (MBE) and metal organic
vapour phase epitaxy (MOVPE).
The following figure shows the main components of an MBE reactor.
The reactor consists of an ultra-high vacuum chamber with a number of
effusion cells, each containing a different element. Each cell has a mechanical
shutter placed in front of its opening. In operation the cells are heated to a
temperature where the elements start to evaporate, producing a beam of
atoms which leave the cells. These beams are aimed at a heated substrate
which consists of a thin wafer of a suitable bulk semiconductor. The incident
beams combine at the surface of the substrate and a semiconductor is
deposited atomic-layer by atomic-layer. The substrate is rotated to ensure
even growth over its surface. By opening the mechanical shutters in front of
certain cells it is possible to control which semiconductor is deposited. For
example opening the shutters in front of the Ga and As cells results in the
growth of GaAs. Shutting the Ga cell and opening the Al cell switches to the
growth of AlAs. Because the shutters can be operated very rapidly in
comparison to the rate at which material is deposited, it is possible to grow
An MBE reactor
Module PHY6002 Inorganic Semiconductor Nanostructures
Lectures 7, 8, 9 and 10
2
very thin layers with very sharp interfaces between layers. The following figure
shows a transmission electron microscope image of a quantum well sample
containing five wells of different thicknesses. The thinnest well has a
thickness of only 1nm. Other cells in the MBE reactor may contain elements
used to dope the semiconductor and it is possible to monitor the growth as it
proceeds by observing the electron diffraction pattern produced by the
surface.
The second epitaxial growth technique is metal organic vapour phase epitaxy
(MOVPE). In this technique the required elements are carried, as a
component of gaseous compounds, to a suitable chamber where they mix as
the gases flow over the surface of a heated substrate. The compounds
breakdown to deposit the semiconductor on the surface of the substrate with
the remaining waste gases being removed from the chamber. Valves in the
gas l ...
Center for Superconducting and Magnetic Materials (CSMM), Research and Facili...The Ohio State University
Summary of the present (5/09) state of the research and facilities in the Center for Superconducting and Magnetic Materials (CSMM). Department of Materials Science and Engineering, The Ohio State University
Case Study: Cyclic Voltametric MeasurementHasnain Ali
The design of an ac Cyclic Voltammetric Measurement System for the in –situ measurement of dissolved oxygen in sediment on the seabed. The measurement strategy should be based on linear ramp cyclic voltammetry
2. OUTLINE
Overview of the Department
Research and Education Projects in Power and
Energy Systems
New Initiatives in the Pipeline
Final Remarks
3. VISION
The Department of Electrical & Computer
Engineering will provide
programs of the highest quality
to produce world class engineers
who can address challenges of the
millennium.
4. ECE DEGREE PROGRAMS
B.S. Electrical Engineering (128 credits)
Concentrations:
oComputer Engineering
oFields and Devices
oSystems and Communications
oGeneral Electrical Engineering
M.S. Computer Engineering (31 - 34 credits)
M.S. Electrical Engineering (31 - 34 credits)
Ph.D. Electrical and Computer Engineering (42 credits beyond
master )*
6. ECE PROGRAM STATS (2011-2012)
Pre-major undergraduate students
in the Pre-Engineering Program (720 students for the
College)
409 Undergraduate students in the B.S.E.E. Program
346 Male, 63 Females (15%), 81.67% Hispanics
100 BS degrees awarded
71 MS students in 2 degree programs:
67 EE and 14 CpE
35 MS degrees awarded
42 Ph.D. Students
35 Male & 7 Female
6 Ph.D. degrees awarded
12. NanoMaterials Integration Laboratory
Expertise
David Zubia (electrical engineering)
Memristors
Patterned solar cells
Nanoscale crystal growth
Eric MacDonald (electrical engineering)
Rad-Hard CMOS design
Jose Mireles (electrical engineering, UACJ-CICTA)
MEMS devices and packaging
John McClure (materials science)
Solar cells
ZnCdTe layers using CSS
Stella Quinones (electrical engineering)
CdTe single crystal growth using CSS
Electrode-less plating
Joseph Pierluissi (electrical engineering)
Memristors
Electromagnetics
13. NanoMaterials Integration Laboratory
NanoFabrication Facility
2,500 SF clean, 6,000 SF total
Class-100 & Class-1000
23 Major pieces of equipment
Undergraduate
Master
Doctoral
14. NanoMaterials Integration Laboratory
Microsystems-Enabled PVs
Use MEMS technology to make miniature solar cells
JV curves of micro cells with different passivation schemes
35
(111) Si wafer KOH Release 30
current density (mA/cm2)
metal contact 25
Nitride
20
A) protection implanted
against doping 15
etch
10
Etch front
5
KOH KOH KOH
0
0 0.1 0.2 0.3 0.4 0.5 0.6
Voltage (V)
(111) oriented wafer 1.24% efficient no passivation
2.95% efficient: Alumina passivation & hot plate anneal@ 430C
4.14% efficient: alumina passivation and 30min anneal in Forming Gas
5.94% Nitride passivation low ammonia
7.40% nitride passivation high ammonia
10.30% efficient optimized nitride 1hr anneal at 450C
12.2% efficient optimized nitride 2hr anneal at 450C
14.85% efficient optimized nitride 3hr anneal at 450C
250um
18. MISSION/SCOPE OF WORK
Formed within the Engineering College at the University of Texas
at El Paso.
Research focus in the following areas:
Power Electronics
Electric Power
Electro-thermal Modeling of Electric Energy Storage Devices
Modeling and Control of Hybrid Electric Energy Storage Systems
Modeling and Control of Piezoelectric Traveling Wave Rotary
Ultrasonic Motors
Strengthen power electronics and power systems expertise at
UTEP.
19. EXPERTISE/CAPABILITY
Modeling, Design and Analysis of Piezoelectric
Devices
Modeling using Finite Volume Methods
Circuits equivalents
Modeling, Design and Analysis of Hybrid Electric
Energy Storage Systems
Multyphisics modeling of batteries and ultracapacitors
Modeling and control of hybrid electric energy storage
systems
COMSOL, MATLAB, SIMetrix simulations
20. EXPERIMENTAL CAPABILITIES
Characterization of piezoelectric traveling wave rotary
ultrasonic motors and other piezoelectric devices
Characterization of energy storage devices such as Li-Ion
batteries and ultracapacitors
Characterization of hybrid electric energy storage systems
21.
22. USDA: GREEN ENGINEERS
Multi-university $3.2M collaboration led by Dr .Heidi Taboada (PI)
and Dr. Jose Espiritu to to produce more scientists and
engineers who can develop new alternative energy sources and
ways to increase energy efficiency.
Offering in the spring semester a course for senior and graduate
students on “Energy Sustainability” as an introduction to the
different types of energy sources; carbon emissions and other
environmental impacts; electric power grid and the future smart
grid.
The course has a final project where the students propose a
device or a system to better exploit energy sources.
23. ETAP DONATION: $125K
Donation of ETAP from Operations Technology Inc.
Obtained an educational license for the ETAP
Academic edition suit – 25 Bus, 20 campus users.
Support for the modules: Short-Circuit ANSI & IEC,
Load flow, Motor acceleration, Harmonics, Transient
Stability, unbalanced load flow and Wind turbine
generator.
Used to teach students about power systems and
training in collaboration with RCES
24. ADDITIONAL MODELING TOOLS
Use of several tools to model and simulate scenarios related to
smart grid technologies. (power, communications and signals)
Available academic licenses of OPNET® Modeler , NI LabView® ,
MATLAB, ETAP and MathCAD
Computer modeling lab with 20 stations
Student training on different tools involving the creation and
testing of heuristic rules to improve energy production and
consumption.
Student generated lessons for regular courses and outreach
activities
25. NEW INITIATIVES
Develop an synergistic research group: Power and Energy
Systems.
Strategic Hire
Develop a Power and Energy Systems concentration at the
graduate and undergraduate levels.
Establishment of the Power and Energy Systems
Laboratory.
Energy conversion
Power Electronics and its applications in control of power
systems
Renewable energy system
Estimated cost of $500k
26. FINAL REMARKS
ECE is building its capabilities in Power and Energy
Systems
Strategic importance at the College and at the
Department
Welcome the opportunity to develop partnerships in
the power and energy sector at the regional, state and
national level
27. DR. MIGUEL VELEZ-REYES
PROFESSOR AND CHAIR
E L E C T R I C A L A N D C O M P U T E R E N G I N E E R I N G D E P T.
U N I V E R S I T Y O F T E X A S AT E L PA S O
500W UNIVERSITY DRIVE
E L PAS O , T X 7 9 9 6 8
PH. 915-747-5470
FAX 915-747-7871
E - M A I L : M V E L E Z R E Y E S @ U T E P. E D U
Editor's Notes
Facilities Funding: UTEP, University of Texas System, Texas Instruments Foundation (TI)Research Funding sources are NSF, National Institute for Nano Engineering (NINE), Amethyst Research Inc, (ARI)
NanoMaterials Integration Lab FacultyInternational Collaboration with Dr. Jose Mireles from Universidad Autonoma de Ciudad Juarez (UACJ)
This research uses established microsystems technologies to make miniature solar cells. Lower left images show the tiny solar cells made of silicon and gallium arsenide. The graph shows that surface passivation was key to obtaining high efficiency. The schematic drawings in the upper left show how the cells are interconnected. Interestingly, high voltages in the 100’s of volts are possible by connecting hundreds of cells in series. This work was a collaboration between NanoMIL and Sandia.
This work is funded by the National Institute for Nano Engineering (NINE) and is a collaboration between UTEP and Sandia. The idea is to combine nanopatterning with alloy compositional grading to improve the efficiency of the cells. It is applied to the ZnCdTe material system which is usually deposited as a polycrystalline film. The goal is to dramatically improve the spatial and morphological uniformity of the crystal grains. The project has computational and experimental aspects. Molecular dynamics is used to simulate the patterned crystal growth. The experimental capability was developed to deposit the patterned ZnCdTe grains.
This new collaboration is a continuation and expansion of previous work. We anticipate making a public announcement in a few weeks on new major funding for this work. The main idea for this work is to create a capability to directly correlate fabrication with microstructure and performance at an atomic scale. The second phase of the project will apply the capability to achieve record breaking voltages in ZnCdTe-based solar cells. The project has computation and experimental aspects. The main collaborators are UTEP, Sandia National Labs, and the Center for Integrated Nanotechnologies. We are also collaborating with:USCB through a new NSF PREM (Partnerships for Research and Education in Materials) CenterAmethyst Research Incorporated through an NSF SBIR grant,And Purdue University through an NSF IGERT grantThe project will address the fundamental barriers to achieving high voltages in ZnCdTe-based solar cells. These barriers are the lattice mismatch between CdTe/CdS which create high defect densities in the material, and the non-uniform spatial and morphological of the crystal grains. The project will address these barriers by adding Zn to the CdTe to reduce the lattice mismatch and by using the nanopatterning to achieve high spatial and morphological uniformity.